ORACLE相关的内核参数详解
1、kernel.sem
[root@test ~]# cat /proc/sys/kernel/sem
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250 32000 100 142
[root@test ~]# ipcs -sl
------ Semaphore Limits --------
max number of arrays = 142
max semaphores per array = 250
max semaphores system wide = 32000
max ops per semop call = 100
semaphore max value = 32767
NAME | DESCRIPTION | MIN VALUE
-------+--------------------------------------------------+----------
SEMMSL | maximum number of semaphores in a semphore set | 250
SEMMNS | maximum number of semphores in the system | 32000
SEMOPM | maximum number of operations per semop(P) call | 100
SEMMNI | maximum number of semaphore sets in system | 128
SEMMSL：10+ processes
四个数字：第1个数字应约大于Oracle进程数，第2个数字建议是第1和第4个数字的乘积。这个参数能够满足大部分使用，但对于连接数较高（比如单节点8000个连接）可以设置为：
10000 1280000 512 1024
1.1 信号量Semaphore介绍
信号量（Semaphore）和Mutex类似，表示可用资源的数量，和Mutex不同的是这个数量可以大于1。
本文介绍的是POSIX semaphore库函数，详见sem_overview(7)，这种信号量不仅可用于同一进程的线程间同步，也可用于不同进程间的同步。
相关函数：
int sem_init(sem_t *sem, intpshared, unsigned int value);
int sem_wait(sem_t *sem);
int sem_trywait(sem_t *sem);
int sem_post(sem_t * sem);
int sem_destroy(sem_t * sem);
semaphore变量的类型为sem_t
sem_init()初始化一个semaphore变量，value参数表示可用资源的数量，pshared参数为0表示信号量用于同一进程的线程间同步。
在用完semaphore变量之后应该调用sem_destroy()释放与semaphore相关的资源。
调用sem_wait()可以获得资源，使semaphore的值减1，如果调用sem_wait()时semaphore的值已经是0，则挂起等待。如果不希望挂起等待，可以调用sem_trywait()。调用sem_post()可以释放资源，使semaphore的值加1，同时唤醒挂起等待的线程。
# cat /proc/sys/kernel/shmmax
# cat /proc/sys/kernel/shmmni
kernel.shmmax = 2147483648
kernel.shmmni = 100
NAME | DESCRIPTION | MIN VALUE
-------+--------------------------------------------------+-------------
SHMMAX | maximum bytes in one shared memory segment| 4294967295
SHMMNI | maximum count of shared memorysegments | 4096
SHMSEG | maximum count of shared memorysegments per proc | TBD
SHMALL | maximum total shared memorysystem-wide | 2097152
2、kernel.shmmni
shmmni：共享内存段的最大数量，一般是够用的
kernel.shmmni 默认为4096
3、fs.file-max
fs.file-max:设置 系统所有进程一共可以打开的文件数量
cat /proc/sys/fs/file-max
该参数建议值：fs.file-max = 6815744
4、fs.aio-max-nr
系统范围内异步IO并发请求的最大个数
fs.aio-max-nr = 1048576
5、net.ipv4.ip_local_port_range
net.ipv4.ip_local_port_range：指定区间端口的总数
net.ipv4.ip_local_port_range = 9000 65500
#让TIME_WAIT状态可以重用，这样即使TIME_WAIT占满了所有端口，也不会拒绝新的请求造成障碍
echo "1" >/proc/sys/net/ipv4/tcp_tw_reuse
#让TIME_WAIT尽快回收，我也不知是多久，观察大概是一秒钟
echo "1" >/proc/sys/net/ipv4/tcp_tw_recycle
6、net.core.rmem_default
net.core.rmem_default表示套接字接收缓冲区大小的缺省值
/proc/sys/net/core/rmem_default
/proc/sys/net/core/rmem_max
使用udp接收数据时：
若没有调用setsockopt设置系统接收缓存,则接收缓存的大小为rmem_default.
若程序调用setsockopt设置系统接收缓存,设置值不能超过rmem_max.
系统会为每个udp socket申请一份缓存空间,而不是共用同一份缓存.
即每个udp socket都会有一个rmem_default大小的缓存空间(假设没有setsockopt设置).
oracle建议的最小值为：
net.core.rmem_default = 262144
7、net.core.rmem_max
net.core.rmem_max：表示套接字接收缓冲区大小的最大值。
oracle建议的最小值为：
net.core.rmem_max = 4194304
8、net.core.wmem_default
cat /proc/sys/net/core/wmem_default
net.core.wmem_default ：udp socket默认的用于发送缓冲区大小的缺省值
net.core.wmem_default = 262144
9、net.core.wmem_max
net.core.wmem_max ：udp socket默认的用于发送缓冲区大小的最大值
net.core.wmem_max = 1048576
linux 释放cache内存
echo 1 > /proc/sys/vm/drop_caches
limit限制
[oracle@db1 ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 257380
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 1024
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
[root@test ~]# su - oracle
[oracle@test ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 15984
max locked memory (kbytes, -l) 50000000
max memory size (kbytes, -m) unlimited
open files (-n) 65536
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 16384
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
[oracle@dm01db01 ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 802816
max locked memory (kbytes, -l) 74136141
max memory size (kbytes, -m) unlimited
open files (-n) 65536
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 131072
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
2、sysctl -a
2.1 默认配置
kernel.sched_child_runs_first = 0
kernel.sched_min_granularity_ns = 4000000
kernel.sched_latency_ns = 20000000
kernel.sched_wakeup_granularity_ns =4000000
kernel.sched_shares_ratelimit = 1000000
kernel.sched_shares_thresh = 4
kernel.sched_features = 32611451
kernel.sched_migration_cost = 500000
kernel.sched_nr_migrate = 32
kernel.sched_time_avg = 1000
kernel.timer_migration = 1
kernel.sched_rt_period_us = 1000000
kernel.sched_rt_runtime_us = 950000
kernel.sched_compat_yield = 1
kernel.panic = 0
kernel.core_uses_pid = 1
kernel.core_pattern =|/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e
kernel.core_pipe_limit = 4
kernel.tainted = 512
kernel.latencytop = 0
kernel.real-root-dev = 0
kernel.print-fatal-signals = 0
kernel.ctrl-alt-del = 0
kernel.ftrace_enabled = 1
kernel.stack_tracer_enabled = 0
kernel.ftrace_dump_on_oops = 0
kernel.modprobe = /sbin/modprobe
kernel.modules_disabled = 0
kernel.hotplug =
kernel.sg-big-buff = 32768
kernel.acct = 4 2 30
kernel.sysrq = 0
error: permission denied on key'kernel.cad_pid'
kernel.threads-max = 514761
kernel.random.poolsize = 4096
kernel.random.entropy_avail = 3474
kernel.random.read_wakeup_threshold = 64
kernel.random.write_wakeup_threshold = 128
kernel.random.boot_id =dfdbf1c1-7dcb-462a-a311-9109eb51e12a
kernel.random.uuid =6ce1f1b9-b09b-4372-a913-086d113eedbc
kernel.overflowuid = 65534
kernel.overflowgid = 65534
kernel.pid_max = 32768
kernel.panic_on_oops = 1
kernel.printk = 4 4 1 7
kernel.printk_ratelimit = 5
kernel.printk_ratelimit_burst = 10
kernel.printk_delay = 0
kernel.ngroups_max = 65536
kernel.unknown_nmi_panic = 0
kernel.nmi_watchdog = 0
kernel.panic_on_unrecovered_nmi = 0
kernel.panic_on_io_nmi = 0
kernel.bootloader_type = 113
kernel.bootloader_version = 1
kernel.kstack_depth_to_print = 12
kernel.io_delay_type = 0
kernel.randomize_va_space = 2
kernel.acpi_video_flags = 0
kernel.softlockup_panic = 0
kernel.softlockup_thresh = 60
kernel.hung_task_panic = 0
kernel.hung_task_check_count = 4194304
kernel.hung_task_timeout_secs = 120
kernel.hung_task_warnings = 0
kernel.compat-log = 1
kernel.max_lock_depth = 1024
kernel.poweroff_cmd = /sbin/poweroff
kernel.keys.maxkeys = 200
kernel.keys.maxbytes = 20000
kernel.keys.root_maxkeys = 200
kernel.keys.root_maxbytes = 20000
kernel.keys.gc_delay = 300
kernel.slow-work.min-threads = 2
kernel.slow-work.max-threads = 32
kernel.slow-work.vslow-percentage = 50
kernel.perf_event_paranoid = 1
kernel.perf_event_mlock_kb = 516
kernel.perf_event_max_sample_rate = 100000
kernel.blk_iopoll = 1
kernel.vsyscall64 = 1
kernel.ostype = Linux
kernel.osrelease =2.6.32-300.3.1.el6uek.x86_64
kernel.version = #1 SMP Fri Dec 9 18:57:35EST 2011
kernel.hostname = db1
kernel.domainname = (none)
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
kernel.shmmni = 4096
kernel.msgmax = 65536
kernel.msgmni = 32768
kernel.msgmnb = 65536
kernel.sem = 250 32000 32 128
kernel.auto_msgmni = 1
kernelNaNy.max = 4096
kernelNaNy.nr = 1050
kernel.sched_domain.cpu0.domain0.min_interval= 1
kernel.sched_domain.cpu0.domain0.max_interval= 4
kernel.sched_domain.cpu0.domain0.busy_idx =2
kernel.sched_domain.cpu0.domain0.idle_idx =0
kernel.sched_domain.cpu0.domain0.newidle_idx= 0
kernel.sched_domain.cpu0.domain0.wake_idx =0
kernel.sched_domain.cpu0.domain0.forkexec_idx= 0
kernel.sched_domain.cpu0.domain0.busy_factor= 64
kernel.sched_domain.cpu0.domain0.imbalance_pct= 125
kernel.sched_domain.cpu0.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu0.domain0.flags =4655
kernel.sched_domain.cpu0.domain0.name = MC
kernel.sched_domain.cpu0.domain1.min_interval= 8
kernel.sched_domain.cpu0.domain1.max_interval= 32
kernel.sched_domain.cpu0.domain1.busy_idx =3
kernel.sched_domain.cpu0.domain1.idle_idx =2
kernel.sched_domain.cpu0.domain1.newidle_idx= 0
kernel.sched_domain.cpu0.domain1.wake_idx =0
kernel.sched_domain.cpu0.domain1.forkexec_idx= 0
kernel.sched_domain.cpu0.domain1.busy_factor= 32
kernel.sched_domain.cpu0.domain1.imbalance_pct= 125
kernel.sched_domain.cpu0.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu0.domain1.flags =1071
kernel.sched_domain.cpu0.domain1.name =NODE
kernel.sched_domain.cpu1.domain0.min_interval= 1
kernel.sched_domain.cpu1.domain0.max_interval= 4
kernel.sched_domain.cpu1.domain0.busy_idx =2
kernel.sched_domain.cpu1.domain0.idle_idx =0
kernel.sched_domain.cpu1.domain0.newidle_idx= 0
kernel.sched_domain.cpu1.domain0.wake_idx =0
kernel.sched_domain.cpu1.domain0.forkexec_idx= 0
kernel.sched_domain.cpu1.domain0.busy_factor= 64
kernel.sched_domain.cpu1.domain0.imbalance_pct= 125
kernel.sched_domain.cpu1.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu1.domain0.flags =4655
kernel.sched_domain.cpu1.domain0.name = MC
kernel.sched_domain.cpu1.domain1.min_interval= 8
kernel.sched_domain.cpu1.domain1.max_interval= 32
kernel.sched_domain.cpu1.domain1.busy_idx =3
kernel.sched_domain.cpu1.domain1.idle_idx =2
kernel.sched_domain.cpu1.domain1.newidle_idx= 0
kernel.sched_domain.cpu1.domain1.wake_idx =0
kernel.sched_domain.cpu1.domain1.forkexec_idx= 0
kernel.sched_domain.cpu1.domain1.busy_factor= 32
kernel.sched_domain.cpu1.domain1.imbalance_pct= 125
kernel.sched_domain.cpu1.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu1.domain1.flags =1071
kernel.sched_domain.cpu1.domain1.name =NODE
kernel.sched_domain.cpu2.domain0.min_interval= 1
kernel.sched_domain.cpu2.domain0.max_interval= 4
kernel.sched_domain.cpu2.domain0.busy_idx =2
kernel.sched_domain.cpu2.domain0.idle_idx =0
kernel.sched_domain.cpu2.domain0.newidle_idx= 0
kernel.sched_domain.cpu2.domain0.wake_idx =0
kernel.sched_domain.cpu2.domain0.forkexec_idx= 0
kernel.sched_domain.cpu2.domain0.busy_factor= 64
kernel.sched_domain.cpu2.domain0.imbalance_pct= 125
kernel.sched_domain.cpu2.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu2.domain0.flags =4655
kernel.sched_domain.cpu2.domain0.name = MC
kernel.sched_domain.cpu2.domain1.min_interval= 8
kernel.sched_domain.cpu2.domain1.max_interval= 32
kernel.sched_domain.cpu2.domain1.busy_idx =3
kernel.sched_domain.cpu2.domain1.idle_idx =2
kernel.sched_domain.cpu2.domain1.newidle_idx= 0
kernel.sched_domain.cpu2.domain1.wake_idx =0
kernel.sched_domain.cpu2.domain1.forkexec_idx= 0
kernel.sched_domain.cpu2.domain1.busy_factor= 32
kernel.sched_domain.cpu2.domain1.imbalance_pct= 125
kernel.sched_domain.cpu2.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu2.domain1.flags =1071
kernel.sched_domain.cpu2.domain1.name =NODE
kernel.sched_domain.cpu3.domain0.min_interval= 1
kernel.sched_domain.cpu3.domain0.max_interval= 4
kernel.sched_domain.cpu3.domain0.busy_idx =2
kernel.sched_domain.cpu3.domain0.idle_idx =0
kernel.sched_domain.cpu3.domain0.newidle_idx= 0
kernel.sched_domain.cpu3.domain0.wake_idx =0
kernel.sched_domain.cpu3.domain0.forkexec_idx= 0
kernel.sched_domain.cpu3.domain0.busy_factor= 64
kernel.sched_domain.cpu3.domain0.imbalance_pct= 125
kernel.sched_domain.cpu3.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu3.domain0.flags =4655
kernel.sched_domain.cpu3.domain0.name = MC
kernel.sched_domain.cpu3.domain1.min_interval= 8
kernel.sched_domain.cpu3.domain1.max_interval= 32
kernel.sched_domain.cpu3.domain1.busy_idx =3
kernel.sched_domain.cpu3.domain1.idle_idx =2
kernel.sched_domain.cpu3.domain1.newidle_idx= 0
kernel.sched_domain.cpu3.domain1.wake_idx =0
kernel.sched_domain.cpu3.domain1.forkexec_idx= 0
kernel.sched_domain.cpu3.domain1.busy_factor= 32
kernel.sched_domain.cpu3.domain1.imbalance_pct= 125
kernel.sched_domain.cpu3.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu3.domain1.flags =1071
kernel.sched_domain.cpu3.domain1.name =NODE
kernel.sched_domain.cpu4.domain0.min_interval= 1
kernel.sched_domain.cpu4.domain0.max_interval= 4
kernel.sched_domain.cpu4.domain0.busy_idx =2
kernel.sched_domain.cpu4.domain0.idle_idx =0
kernel.sched_domain.cpu4.domain0.newidle_idx= 0
kernel.sched_domain.cpu4.domain0.wake_idx =0
kernel.sched_domain.cpu4.domain0.forkexec_idx= 0
kernel.sched_domain.cpu4.domain0.busy_factor= 64
kernel.sched_domain.cpu4.domain0.imbalance_pct= 125
kernel.sched_domain.cpu4.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu4.domain0.flags =4655
kernel.sched_domain.cpu4.domain0.name = MC
kernel.sched_domain.cpu4.domain1.min_interval= 8
kernel.sched_domain.cpu4.domain1.max_interval= 32
kernel.sched_domain.cpu4.domain1.busy_idx =3
kernel.sched_domain.cpu4.domain1.idle_idx =2
kernel.sched_domain.cpu4.domain1.newidle_idx= 0
kernel.sched_domain.cpu4.domain1.wake_idx =0
kernel.sched_domain.cpu4.domain1.forkexec_idx= 0
kernel.sched_domain.cpu4.domain1.busy_factor= 32
kernel.sched_domain.cpu4.domain1.imbalance_pct= 125
kernel.sched_domain.cpu4.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu4.domain1.flags =1071
kernel.sched_domain.cpu4.domain1.name =NODE
kernel.sched_domain.cpu5.domain0.min_interval= 1
kernel.sched_domain.cpu5.domain0.max_interval= 4
kernel.sched_domain.cpu5.domain0.busy_idx =2
kernel.sched_domain.cpu5.domain0.idle_idx =0
kernel.sched_domain.cpu5.domain0.newidle_idx= 0
kernel.sched_domain.cpu5.domain0.wake_idx =0
kernel.sched_domain.cpu5.domain0.forkexec_idx= 0
kernel.sched_domain.cpu5.domain0.busy_factor= 64
kernel.sched_domain.cpu5.domain0.imbalance_pct= 125
kernel.sched_domain.cpu5.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu5.domain0.flags =4655
kernel.sched_domain.cpu5.domain0.name = MC
kernel.sched_domain.cpu5.domain1.min_interval= 8
kernel.sched_domain.cpu5.domain1.max_interval= 32
kernel.sched_domain.cpu5.domain1.busy_idx =3
kernel.sched_domain.cpu5.domain1.idle_idx =2
kernel.sched_domain.cpu5.domain1.newidle_idx= 0
kernel.sched_domain.cpu5.domain1.wake_idx =0
kernel.sched_domain.cpu5.domain1.forkexec_idx= 0
kernel.sched_domain.cpu5.domain1.busy_factor= 32
kernel.sched_domain.cpu5.domain1.imbalance_pct= 125
kernel.sched_domain.cpu5.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu5.domain1.flags =1071
kernel.sched_domain.cpu5.domain1.name =NODE
kernel.sched_domain.cpu6.domain0.min_interval= 1
kernel.sched_domain.cpu6.domain0.max_interval= 4
kernel.sched_domain.cpu6.domain0.busy_idx =2
kernel.sched_domain.cpu6.domain0.idle_idx =0
kernel.sched_domain.cpu6.domain0.newidle_idx= 0
kernel.sched_domain.cpu6.domain0.wake_idx =0
kernel.sched_domain.cpu6.domain0.forkexec_idx= 0
kernel.sched_domain.cpu6.domain0.busy_factor= 64
kernel.sched_domain.cpu6.domain0.imbalance_pct= 125
kernel.sched_domain.cpu6.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu6.domain0.flags =4655
kernel.sched_domain.cpu6.domain0.name = MC
kernel.sched_domain.cpu6.domain1.min_interval= 8
kernel.sched_domain.cpu6.domain1.max_interval= 32
kernel.sched_domain.cpu6.domain1.busy_idx =3
kernel.sched_domain.cpu6.domain1.idle_idx =2
kernel.sched_domain.cpu6.domain1.newidle_idx= 0
kernel.sched_domain.cpu6.domain1.wake_idx =0
kernel.sched_domain.cpu6.domain1.forkexec_idx= 0
kernel.sched_domain.cpu6.domain1.busy_factor= 32
kernel.sched_domain.cpu6.domain1.imbalance_pct= 125
kernel.sched_domain.cpu6.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu6.domain1.flags =1071
kernel.sched_domain.cpu6.domain1.name =NODE
kernel.sched_domain.cpu7.domain0.min_interval= 1
kernel.sched_domain.cpu7.domain0.max_interval= 4
kernel.sched_domain.cpu7.domain0.busy_idx =2
kernel.sched_domain.cpu7.domain0.idle_idx =0
kernel.sched_domain.cpu7.domain0.newidle_idx= 0
kernel.sched_domain.cpu7.domain0.wake_idx =0
kernel.sched_domain.cpu7.domain0.forkexec_idx= 0
kernel.sched_domain.cpu7.domain0.busy_factor= 64
kernel.sched_domain.cpu7.domain0.imbalance_pct= 125
kernel.sched_domain.cpu7.domain0.cache_nice_tries= 1
kernel.sched_domain.cpu7.domain0.flags =4655
kernel.sched_domain.cpu7.domain0.name = MC
kernel.sched_domain.cpu7.domain1.min_interval= 8
kernel.sched_domain.cpu7.domain1.max_interval= 32
kernel.sched_domain.cpu7.domain1.busy_idx =3
kernel.sched_domain.cpu7.domain1.idle_idx =2
kernel.sched_domain.cpu7.domain1.newidle_idx= 0
kernel.sched_domain.cpu7.domain1.wake_idx =0
kernel.sched_domain.cpu7.domain1.forkexec_idx= 0
kernel.sched_domain.cpu7.domain1.busy_factor= 32
kernel.sched_domain.cpu7.domain1.imbalance_pct= 125
kernel.sched_domain.cpu7.domain1.cache_nice_tries= 2
kernel.sched_domain.cpu7.domain1.flags =1071
kernel.sched_domain.cpu7.domain1.name =NODE
vm.overcommit_memory = 0
vm.panic_on_oom = 0
vm.oom_kill_allocating_task = 0
vm.oom_dump_tasks = 0
vm.overcommit_ratio = 50
vm.page-cluster = 3
vm.dirty_background_ratio = 10
vm.dirty_background_bytes = 0
vm.dirty_ratio = 20
vm.dirty_bytes = 0
vm.dirty_writeback_centisecs = 500
vm.dirty_expire_centisecs = 3000
vm.nr_pdflush_threads = 0
vm.swappiness = 60
vm.nr_hugepages = 0
vm.hugetlb_shm_group = 0
vm.hugepages_treat_as_movable = 0
vm.nr_overcommit_hugepages = 0
vm.lowmem_reserve_ratio = 256 256 32
vm.drop_caches = 0
vm.min_free_kbytes = 22991
vm.percpu_pagelist_fraction = 0
vm.max_map_count = 65530
vm.laptop_mode = 0
vm.block_dump = 0
vm.vfs_cache_pressure = 100
vm.legacy_va_layout = 0
vm.zone_reclaim_mode = 0
vm.min_unmapped_ratio = 1
vm.min_slab_ratio = 5
vm.stat_interval = 1
vm.mmap_min_addr = 4096
vm.numa_zonelist_order = default
vm.scan_unevictable_pages = 0
fs.inode-nr = 154650 22116
fs.inode-state = 154650 22116 0 0 0 0 0
fs.file-nr = 8096 0 6815744
fs.file-max = 6815744
fs.nr_open = 1048576
fs.dentry-state = 187669 177721 45 0 0 0
fs.overflowuid = 65534
fs.overflowgid = 65534
fs.leases-enable = 1
fs.dir-notify-enable = 1
fs.lease-break-time = 45
fs.aio-nr = 61935
fs.aio-max-nr = 65536
fs.inotify.max_user_instances = 128
fs.inotify.max_user_watches = 8192
fs.inotify.max_queued_events = 16384
fs.epoll.max_user_watches = 6747074
fs.suid_dumpable = 0
fs.binfmt_misc.status = enabled
fs.quota.lookups = 0
fs.quota.drops = 0
fs.quota.reads = 0
fs.quota.writes = 0
fs.quota.cache_hits = 0
fs.quota.allocated_dquots = 0
fs.quota.free_dquots = 0
fs.quota.syncs = 40
fs.mqueue.queues_max = 256
fs.mqueue.msg_max = 10
fs.mqueue.msgsize_max = 8192
debug.exception-trace = 1
dev.scsi.logging_level = 0
dev.raid.speed_limit_min = 1000
dev.raid.speed_limit_max = 200000
dev.hpet.max-user-freq = 64
dev.mac_hid.mouse_button_emulation = 0
dev.mac_hid.mouse_button2_keycode = 97
dev.mac_hid.mouse_button3_keycode = 100
dev.cdrom.info = CD-ROM information, Id:cdrom.c 3.20 2003/12/17
dev.cdrom.info =
dev.cdrom.info = drive name:
dev.cdrom.info = drive speed:
dev.cdrom.info = drive # of slots:
dev.cdrom.info = Can close tray:
dev.cdrom.info = Can open tray:
dev.cdrom.info = Can lock tray:
dev.cdrom.info = Can change speed:
dev.cdrom.info = Can select disk:
dev.cdrom.info = Can read multisession:
dev.cdrom.info = Can read MCN:
dev.cdrom.info = Reports media changed:
dev.cdrom.info = Can play audio:
dev.cdrom.info = Can write CD-R:
dev.cdrom.info = Can write CD-RW:
dev.cdrom.info = Can read DVD:
dev.cdrom.info = Can write DVD-R:
dev.cdrom.info = Can write DVD-RAM:
dev.cdrom.info = Can read MRW:
dev.cdrom.info = Can write MRW:
dev.cdrom.info = Can write RAM:
dev.cdrom.info =
dev.cdrom.info =
dev.cdrom.autoclose = 1
dev.cdrom.autoeject = 0
dev.cdrom.debug = 0
dev.cdrom.lock = 1
dev.cdrom.check_media = 0
net.netfilter.nf_log.0 = NONE
net.netfilter.nf_log.1 = NONE
net.netfilter.nf_log.2 = NONE
net.netfilter.nf_log.3 = NONE
net.netfilter.nf_log.4 = NONE
net.netfilter.nf_log.5 = NONE
net.netfilter.nf_log.6 = NONE
net.netfilter.nf_log.7 = NONE
net.netfilter.nf_log.8 = NONE
net.netfilter.nf_log.9 = NONE
net.netfilter.nf_log.10 = NONE
net.netfilter.nf_log.11 = NONE
net.netfilter.nf_log.12 = NONE
net.netfilter.nf_conntrack_generic_timeout= 600
net.netfilter.nf_conntrack_tcp_timeout_syn_sent= 120
net.netfilter.nf_conntrack_tcp_timeout_syn_recv= 60
net.netfilter.nf_conntrack_tcp_timeout_established= 432000
net.netfilter.nf_conntrack_tcp_timeout_fin_wait= 120
net.netfilter.nf_conntrack_tcp_timeout_close_wait= 60
net.netfilter.nf_conntrack_tcp_timeout_last_ack= 30
net.netfilter.nf_conntrack_tcp_timeout_time_wait= 120
net.netfilter.nf_conntrack_tcp_timeout_close= 10
net.netfilter.nf_conntrack_tcp_timeout_max_retrans= 300
net.netfilter.nf_conntrack_tcp_timeout_unacknowledged= 300
net.netfilter.nf_conntrack_tcp_loose = 1
net.netfilter.nf_conntrack_tcp_be_liberal =0
net.netfilter.nf_conntrack_tcp_max_retrans= 3
net.netfilter.nf_conntrack_udp_timeout = 30
net.netfilter.nf_conntrack_udp_timeout_stream= 180
net.netfilter.nf_conntrack_icmpv6_timeout =30
net.netfilter.nf_conntrack_frag6_timeout =60
net.netfilter.nf_conntrack_frag6_low_thresh= 196608
net.netfilter.nf_conntrack_frag6_high_thresh= 262144
net.netfilter.nf_conntrack_icmp_timeout =30
net.netfilter.nf_conntrack_acct = 1
net.netfilter.nf_conntrack_events = 1
net.netfilter.nf_conntrack_events_retry_timeout= 15
net.netfilter.nf_conntrack_max = 65536
net.netfilter.nf_conntrack_count = 412
net.netfilter.nf_conntrack_buckets = 16384
net.netfilter.nf_conntrack_checksum = 1
net.netfilter.nf_conntrack_log_invalid = 0
net.netfilter.nf_conntrack_expect_max = 256
net.core.somaxconn = 128
net.core.xfrm_aevent_etime = 10
net.core.xfrm_aevent_rseqth = 2
net.core.xfrm_larval_drop = 1
net.core.xfrm_acq_expires = 30
net.core.wmem_max = 131071
net.core.rmem_max = 131071
net.core.wmem_default = 126976
net.core.rmem_default = 126976
net.core.dev_weight = 64
net.core.netdev_max_backlog = 1000
net.core.message_cost = 5
net.core.message_burst = 10
net.core.optmem_max = 20480
net.core.rps_sock_flow_entries = 0
net.core.netdev_budget = 300
net.core.warnings = 1
net.ipv4.route.gc_thresh = 524288
net.ipv4.route.max_size = 8388608
net.ipv4.route.gc_min_interval = 0
net.ipv4.route.gc_min_interval_ms = 500
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_interval = 60
net.ipv4.route.redirect_load = 20
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_silence = 20480
net.ipv4.route.error_cost = 1000
net.ipv4.route.error_burst = 5000
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.mtu_expires = 600
net.ipv4.route.min_pmtu = 552
net.ipv4.route.min_adv_mss = 256
net.ipv4.route.secret_interval = 600
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.retrans_time = 99
net.ipv4.neigh.default.base_reachable_time= 30
net.ipv4.neigh.default.delay_first_probe_time= 5
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.anycast_delay = 99
net.ipv4.neigh.default.proxy_delay = 79
net.ipv4.neigh.default.locktime = 99
net.ipv4.neigh.default.retrans_time_ms =1000
net.ipv4.neigh.default.base_reachable_time_ms= 30000
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.gc_thresh2 = 128
net.ipv4.neigh.default.gc_thresh3 = 512
net.ipv4.neigh.default.gc_thresh4 = 1024
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.retrans_time = 99
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.delay_first_probe_time =5
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.anycast_delay = 99
net.ipv4.neigh.lo.proxy_delay = 79
net.ipv4.neigh.lo.locktime = 99
net.ipv4.neigh.lo.retrans_time_ms = 1000
net.ipv4.neigh.lo.base_reachable_time_ms =30000
net.ipv4.neigh.em2.mcast_solicit = 3
net.ipv4.neigh.em2.ucast_solicit = 3
net.ipv4.neigh.em2.app_solicit = 0
net.ipv4.neigh.em2.retrans_time = 99
net.ipv4.neigh.em2.base_reachable_time = 30
net.ipv4.neigh.em2.delay_first_probe_time =5
net.ipv4.neigh.em2.gc_stale_time = 60
net.ipv4.neigh.em2.unres_qlen = 3
net.ipv4.neigh.em2.proxy_qlen = 64
net.ipv4.neigh.em2.anycast_delay = 99
net.ipv4.neigh.em2.proxy_delay = 79
net.ipv4.neigh.em2.locktime = 99
net.ipv4.neigh.em2.retrans_time_ms = 1000
net.ipv4.neigh.em2.base_reachable_time_ms =30000
net.ipv4.neigh.em1.mcast_solicit = 3
net.ipv4.neigh.em1.ucast_solicit = 3
net.ipv4.neigh.em1.app_solicit = 0
net.ipv4.neigh.em1.retrans_time = 99
net.ipv4.neigh.em1.base_reachable_time = 30
net.ipv4.neigh.em1.delay_first_probe_time =5
net.ipv4.neigh.em1.gc_stale_time = 60
net.ipv4.neigh.em1.unres_qlen = 3
net.ipv4.neigh.em1.proxy_qlen = 64
net.ipv4.neigh.em1.anycast_delay = 99
net.ipv4.neigh.em1.proxy_delay = 79
net.ipv4.neigh.em1.locktime = 99
net.ipv4.neigh.em1.retrans_time_ms = 1000
net.ipv4.neigh.em1.base_reachable_time_ms =30000
net.ipv4.neigh.bond0.mcast_solicit = 3
net.ipv4.neigh.bond0.ucast_solicit = 3
net.ipv4.neigh.bond0.app_solicit = 0
net.ipv4.neigh.bond0.retrans_time = 99
net.ipv4.neigh.bond0.base_reachable_time =30
net.ipv4.neigh.bond0.delay_first_probe_time= 5
net.ipv4.neigh.bond0.gc_stale_time = 60
net.ipv4.neigh.bond0.unres_qlen = 3
net.ipv4.neigh.bond0.proxy_qlen = 64
net.ipv4.neigh.bond0.anycast_delay = 99
net.ipv4.neigh.bond0.proxy_delay = 79
net.ipv4.neigh.bond0.locktime = 99
net.ipv4.neigh.bond0.retrans_time_ms = 1000
net.ipv4.neigh.bond0.base_reachable_time_ms= 30000
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.tcp_syn_retries = 5
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_max_orphans = 262144
net.ipv4.tcp_max_tw_buckets = 262144
net.ipv4.ip_dynaddr = 0
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_max_syn_backlog = 2048
net.ipv4.ip_local_port_range = 32768 61000
net.ipv4.igmp_max_memberships = 20
net.ipv4.igmp_max_msf = 10
net.ipv4.inet_peer_threshold = 65664
net.ipv4.inet_peer_minttl = 120
net.ipv4.inet_peer_maxttl = 600
net.ipv4.inet_peer_gc_mintime = 10
net.ipv4.inet_peer_gc_maxtime = 120
net.ipv4.tcp_orphan_retries = 0
net.ipv4.tcp_fack = 1
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_ecn = 2
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_mem = 3088512 4118016 6177024
net.ipv4.tcp_wmem = 4096 16384 4194304
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_frto = 2
net.ipv4.tcp_frto_response = 0
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_no_metrics_save = 0
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_tso_win_divisor = 3
net.ipv4.tcp_congestion_control = cubic
net.ipv4.tcp_abc = 0
net.ipv4.tcp_mtu_probing = 0
net.ipv4.tcp_base_mss = 512
net.ipv4.tcp_workaround_signed_windows = 0
net.ipv4.tcp_dma_copybreak = 4096
net.ipv4.tcp_slow_start_after_idle = 1
net.ipv4.cipso_cache_enable = 1
net.ipv4.cipso_cache_bucket_size = 10
net.ipv4.cipso_rbm_optfmt = 0
net.ipv4.cipso_rbm_strictvalid = 1
net.ipv4.tcp_available_congestion_control =cubic reno
net.ipv4.tcp_allowed_congestion_control =cubic reno
net.ipv4.tcp_max_ssthresh = 0
net.ipv4.udp_mem = 3088512 4118016 6177024
net.ipv4.udp_rmem_min = 4096
net.ipv4.udp_wmem_min = 4096
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.accept_redirects = 1
net.ipv4.conf.all.secure_redirects = 1
net.ipv4.conf.all.shared_media = 1
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.all.send_redirects = 1
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.accept_local = 1
net.ipv4.conf.all.src_valid_mark = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.medium_id = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.all.tag = 0
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.arp_announce = 0
net.ipv4.conf.all.arp_ignore = 0
net.ipv4.conf.all.arp_accept = 0
net.ipv4.conf.all.arp_notify = 0
net.ipv4.conf.all.disable_xfrm = 0
net.ipv4.conf.all.disable_policy = 0
net.ipv4.conf.all.force_igmp_version = 0
net.ipv4.conf.all.promote_secondaries = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.accept_redirects = 1
net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.default.shared_media = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.default.accept_source_route =0
net.ipv4.conf.default.accept_local = 0
net.ipv4.conf.default.src_valid_mark = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.medium_id = 0
net.ipv4.conf.default.bootp_relay = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.tag = 0
net.ipv4.conf.default.arp_filter = 0
net.ipv4.conf.default.arp_announce = 0
net.ipv4.conf.default.arp_ignore = 0
net.ipv4.conf.default.arp_accept = 0
net.ipv4.conf.default.arp_notify = 0
net.ipv4.conf.default.disable_xfrm = 0
net.ipv4.conf.default.disable_policy = 0
net.ipv4.conf.default.force_igmp_version =0
net.ipv4.conf.default.promote_secondaries =0
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.accept_redirects = 1
net.ipv4.conf.lo.secure_redirects = 1
net.ipv4.conf.lo.shared_media = 1
net.ipv4.conf.lo.rp_filter = 1
net.ipv4.conf.lo.send_redirects = 1
net.ipv4.conf.lo.accept_source_route = 0
net.ipv4.conf.lo.accept_local = 0
net.ipv4.conf.lo.src_valid_mark = 0
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.lo.medium_id = 0
net.ipv4.conf.lo.bootp_relay = 0
net.ipv4.conf.lo.log_martians = 0
net.ipv4.conf.lo.tag = 0
net.ipv4.conf.lo.arp_filter = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_accept = 0
net.ipv4.conf.lo.arp_notify = 0
net.ipv4.conf.lo.disable_xfrm = 1
net.ipv4.conf.lo.disable_policy = 1
net.ipv4.conf.lo.force_igmp_version = 0
net.ipv4.conf.lo.promote_secondaries = 0
net.ipv4.conf.em2.forwarding = 0
net.ipv4.conf.em2.mc_forwarding = 0
net.ipv4.conf.em2.accept_redirects = 1
net.ipv4.conf.em2.secure_redirects = 1
net.ipv4.conf.em2.shared_media = 1
net.ipv4.conf.em2.rp_filter = 1
net.ipv4.conf.em2.send_redirects = 1
net.ipv4.conf.em2.accept_source_route = 0
net.ipv4.conf.em2.accept_local = 0
net.ipv4.conf.em2.src_valid_mark = 0
net.ipv4.conf.em2.proxy_arp = 0
net.ipv4.conf.em2.medium_id = 0
net.ipv4.conf.em2.bootp_relay = 0
net.ipv4.conf.em2.log_martians = 0
net.ipv4.conf.em2.tag = 0
net.ipv4.conf.em2.arp_filter = 0
net.ipv4.conf.em2.arp_announce = 0
net.ipv4.conf.em2.arp_ignore = 0
net.ipv4.conf.em2.arp_accept = 0
net.ipv4.conf.em2.arp_notify = 0
net.ipv4.conf.em2.disable_xfrm = 0
net.ipv4.conf.em2.disable_policy = 0
net.ipv4.conf.em2.force_igmp_version = 0
net.ipv4.conf.em2.promote_secondaries = 0
net.ipv4.conf.em1.forwarding = 0
net.ipv4.conf.em1.mc_forwarding = 0
net.ipv4.conf.em1.accept_redirects = 1
net.ipv4.conf.em1.secure_redirects = 1
net.ipv4.conf.em1.shared_media = 1
net.ipv4.conf.em1.rp_filter = 1
net.ipv4.conf.em1.send_redirects = 1
net.ipv4.conf.em1.accept_source_route = 0
net.ipv4.conf.em1.accept_local = 0
net.ipv4.conf.em1.src_valid_mark = 0
net.ipv4.conf.em1.proxy_arp = 0
net.ipv4.conf.em1.medium_id = 0
net.ipv4.conf.em1.bootp_relay = 0
net.ipv4.conf.em1.log_martians = 0
net.ipv4.conf.em1.tag = 0
net.ipv4.conf.em1.arp_filter = 0
net.ipv4.conf.em1.arp_announce = 0
net.ipv4.conf.em1.arp_ignore = 0
net.ipv4.conf.em1.arp_accept = 0
net.ipv4.conf.em1.arp_notify = 0
net.ipv4.conf.em1.disable_xfrm = 0
net.ipv4.conf.em1.disable_policy = 0
net.ipv4.conf.em1.force_igmp_version = 0
net.ipv4.conf.em1.promote_secondaries = 0
net.ipv4.conf.bond0.forwarding = 0
net.ipv4.conf.bond0.mc_forwarding = 0
net.ipv4.conf.bond0.accept_redirects = 1
net.ipv4.conf.bond0.secure_redirects = 1
net.ipv4.conf.bond0.shared_media = 1
net.ipv4.conf.bond0.rp_filter = 1
net.ipv4.conf.bond0.send_redirects = 1
net.ipv4.conf.bond0.accept_source_route = 0
net.ipv4.conf.bond0.accept_local = 0
net.ipv4.conf.bond0.src_valid_mark = 0
net.ipv4.conf.bond0.proxy_arp = 0
net.ipv4.conf.bond0.medium_id = 0
net.ipv4.conf.bond0.bootp_relay = 0
net.ipv4.conf.bond0.log_martians = 0
net.ipv4.conf.bond0.tag = 0
net.ipv4.conf.bond0.arp_filter = 0
net.ipv4.conf.bond0.arp_announce = 0
net.ipv4.conf.bond0.arp_ignore = 0
net.ipv4.conf.bond0.arp_accept = 0
net.ipv4.conf.bond0.arp_notify = 0
net.ipv4.conf.bond0.disable_xfrm = 0
net.ipv4.conf.bond0.disable_policy = 0
net.ipv4.conf.bond0.force_igmp_version = 0
net.ipv4.conf.bond0.promote_secondaries = 0
net.ipv4.ip_forward = 0
net.ipv4.xfrm4_gc_thresh = 4194304
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_time = 30
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses= 1
net.ipv4.icmp_errors_use_inbound_ifaddr = 0
net.ipv4.icmp_ratelimit = 1000
net.ipv4.icmp_ratemask = 6168
net.ipv4.rt_cache_rebuild_count = 4
net.ipv4.ipfrag_secret_interval = 600
net.ipv4.ipfrag_max_dist = 64
net.ipv6.neigh.default.mcast_solicit = 3
net.ipv6.neigh.default.ucast_solicit = 3
net.ipv6.neigh.default.app_solicit = 0
net.ipv6.neigh.default.delay_first_probe_time= 5
net.ipv6.neigh.default.gc_stale_time = 60
net.ipv6.neigh.default.unres_qlen = 3
net.ipv6.neigh.default.proxy_qlen = 64
net.ipv6.neigh.default.anycast_delay = 99
net.ipv6.neigh.default.proxy_delay = 79
net.ipv6.neigh.default.locktime = 0
net.ipv6.neigh.default.retrans_time_ms =1000
net.ipv6.neigh.default.base_reachable_time_ms= 30000
net.ipv6.neigh.default.gc_interval = 30
net.ipv6.neigh.default.gc_thresh2 = 128
net.ipv6.neigh.default.gc_thresh3 = 512
net.ipv6.neigh.default.gc_thresh4 = 1024
net.ipv6.neigh.lo.mcast_solicit = 3
net.ipv6.neigh.lo.ucast_solicit = 3
net.ipv6.neigh.lo.app_solicit = 0
net.ipv6.neigh.lo.delay_first_probe_time =5
net.ipv6.neigh.lo.gc_stale_time = 60
net.ipv6.neigh.lo.unres_qlen = 3
net.ipv6.neigh.lo.proxy_qlen = 64
net.ipv6.neigh.lo.anycast_delay = 99
net.ipv6.neigh.lo.proxy_delay = 79
net.ipv6.neigh.lo.locktime = 0
net.ipv6.neigh.lo.retrans_time_ms = 1000
net.ipv6.neigh.lo.base_reachable_time_ms =30000
net.ipv6.neigh.em1.mcast_solicit = 3
net.ipv6.neigh.em1.ucast_solicit = 3
net.ipv6.neigh.em1.app_solicit = 0
net.ipv6.neigh.em1.delay_first_probe_time =5
net.ipv6.neigh.em1.gc_stale_time = 60
net.ipv6.neigh.em1.unres_qlen = 3
net.ipv6.neigh.em1.proxy_qlen = 64
net.ipv6.neigh.em1.anycast_delay = 99
net.ipv6.neigh.em1.proxy_delay = 79
net.ipv6.neigh.em1.locktime = 0
net.ipv6.neigh.em1.retrans_time_ms = 1000
net.ipv6.neigh.em1.base_reachable_time_ms =30000
net.ipv6.neigh.em2.mcast_solicit = 3
net.ipv6.neigh.em2.ucast_solicit = 3
net.ipv6.neigh.em2.app_solicit = 0
net.ipv6.neigh.em2.delay_first_probe_time =5
net.ipv6.neigh.em2.gc_stale_time = 60
net.ipv6.neigh.em2.unres_qlen = 3
net.ipv6.neigh.em2.proxy_qlen = 64
net.ipv6.neigh.em2.anycast_delay = 99
net.ipv6.neigh.em2.proxy_delay = 79
net.ipv6.neigh.em2.locktime = 0
net.ipv6.neigh.em2.retrans_time_ms = 1000
net.ipv6.neigh.em2.base_reachable_time_ms =30000
net.ipv6.neigh.bond0.mcast_solicit = 3
net.ipv6.neigh.bond0.ucast_solicit = 3
net.ipv6.neigh.bond0.app_solicit = 0
net.ipv6.neigh.bond0.delay_first_probe_time= 5
net.ipv6.neigh.bond0.gc_stale_time = 60
net.ipv6.neigh.bond0.unres_qlen = 3
net.ipv6.neigh.bond0.proxy_qlen = 64
net.ipv6.neigh.bond0.anycast_delay = 99
net.ipv6.neigh.bond0.proxy_delay = 79
net.ipv6.neigh.bond0.locktime = 0
net.ipv6.neigh.bond0.retrans_time_ms = 1000
net.ipv6.neigh.bond0.base_reachable_time_ms= 30000
net.ipv6.xfrm6_gc_thresh = 2048
net.ipv6.conf.all.forwarding = 0
net.ipv6.conf.all.hop_limit = 64
net.ipv6.conf.all.mtu = 1280
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.accept_redirects = 1
net.ipv6.conf.all.autoconf = 1
net.ipv6.conf.all.dad_transmits = 1
net.ipv6.conf.all.router_solicitations = 3
net.ipv6.conf.all.router_solicitation_interval= 4
net.ipv6.conf.all.router_solicitation_delay= 1
net.ipv6.conf.all.force_mld_version = 0
net.ipv6.conf.all.use_tempaddr = 0
net.ipv6.conf.all.temp_valid_lft = 604800
net.ipv6.conf.all.temp_prefered_lft = 86400
net.ipv6.conf.all.regen_max_retry = 5
net.ipv6.conf.all.max_desync_factor = 600
net.ipv6.conf.all.max_addresses = 16
net.ipv6.conf.all.accept_ra_defrtr = 1
net.ipv6.conf.all.accept_ra_pinfo = 1
net.ipv6.conf.all.accept_ra_rtr_pref = 1
net.ipv6.conf.all.router_probe_interval =60
net.ipv6.conf.all.accept_ra_rt_info_max_plen= 0
net.ipv6.conf.all.proxy_ndp = 0
net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.all.optimistic_dad = 0
net.ipv6.conf.all.mc_forwarding = 0
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.all.accept_dad = 1
net.ipv6.conf.default.forwarding = 0
net.ipv6.conf.default.hop_limit = 64
net.ipv6.conf.default.mtu = 1280
net.ipv6.conf.default.accept_ra = 1
net.ipv6.conf.default.accept_redirects = 1
net.ipv6.conf.default.autoconf = 1
net.ipv6.conf.default.dad_transmits = 1
net.ipv6.conf.default.router_solicitations= 3
net.ipv6.conf.default.router_solicitation_interval= 4
net.ipv6.conf.default.router_solicitation_delay= 1
net.ipv6.conf.default.force_mld_version = 0
net.ipv6.conf.default.use_tempaddr = 0
net.ipv6.conf.default.temp_valid_lft =604800
net.ipv6.conf.default.temp_prefered_lft =86400
net.ipv6.conf.default.regen_max_retry = 5
net.ipv6.conf.default.max_desync_factor =600
net.ipv6.conf.default.max_addresses = 16
net.ipv6.conf.default.accept_ra_defrtr = 1
net.ipv6.conf.default.accept_ra_pinfo = 1
net.ipv6.conf.default.accept_ra_rtr_pref =1
net.ipv6.conf.default.router_probe_interval= 60
net.ipv6.conf.default.accept_ra_rt_info_max_plen= 0
net.ipv6.conf.default.proxy_ndp = 0
net.ipv6.conf.default.accept_source_route =0
net.ipv6.conf.default.optimistic_dad = 0
net.ipv6.conf.default.mc_forwarding = 0
net.ipv6.conf.default.disable_ipv6 = 0
net.ipv6.conf.default.accept_dad = 1
net.ipv6.conf.lo.forwarding = 0
net.ipv6.conf.lo.hop_limit = 64
net.ipv6.conf.lo.mtu = 16436
net.ipv6.conf.lo.accept_ra = 1
net.ipv6.conf.lo.accept_redirects = 1
net.ipv6.conf.lo.autoconf = 1
net.ipv6.conf.lo.dad_transmits = 1
net.ipv6.conf.lo.router_solicitations = 3
net.ipv6.conf.lo.router_solicitation_interval= 4
net.ipv6.conf.lo.router_solicitation_delay= 1
net.ipv6.conf.lo.force_mld_version = 0
net.ipv6.conf.lo.use_tempaddr = -1
net.ipv6.conf.lo.temp_valid_lft = 604800
net.ipv6.conf.lo.temp_prefered_lft = 86400
net.ipv6.conf.lo.regen_max_retry = 5
net.ipv6.conf.lo.max_desync_factor = 600
net.ipv6.conf.lo.max_addresses = 16
net.ipv6.conf.lo.accept_ra_defrtr = 1
net.ipv6.conf.lo.accept_ra_pinfo = 1
net.ipv6.conf.lo.accept_ra_rtr_pref = 1
net.ipv6.conf.lo.router_probe_interval = 60
net.ipv6.conf.lo.accept_ra_rt_info_max_plen= 0
net.ipv6.conf.lo.proxy_ndp = 0
net.ipv6.conf.lo.accept_source_route = 0
net.ipv6.conf.lo.optimistic_dad = 0
net.ipv6.conf.lo.mc_forwarding = 0
net.ipv6.conf.lo.disable_ipv6 = 0
net.ipv6.conf.lo.accept_dad = -1
net.ipv6.conf.em1.forwarding = 0
net.ipv6.conf.em1.hop_limit = 64
net.ipv6.conf.em1.mtu = 1500
net.ipv6.conf.em1.accept_ra = 1
net.ipv6.conf.em1.accept_redirects = 1
net.ipv6.conf.em1.autoconf = 1
net.ipv6.conf.em1.dad_transmits = 1
net.ipv6.conf.em1.router_solicitations = 3
net.ipv6.conf.em1.router_solicitation_interval= 4
net.ipv6.conf.em1.router_solicitation_delay= 1
net.ipv6.conf.em1.force_mld_version = 0
net.ipv6.conf.em1.use_tempaddr = 0
net.ipv6.conf.em1.temp_valid_lft = 604800
net.ipv6.conf.em1.temp_prefered_lft = 86400
net.ipv6.conf.em1.regen_max_retry = 5
net.ipv6.conf.em1.max_desync_factor = 600
net.ipv6.conf.em1.max_addresses = 16
net.ipv6.conf.em1.accept_ra_defrtr = 1
net.ipv6.conf.em1.accept_ra_pinfo = 1
net.ipv6.conf.em1.accept_ra_rtr_pref = 1
net.ipv6.conf.em1.router_probe_interval =60
net.ipv6.conf.em1.accept_ra_rt_info_max_plen= 0
net.ipv6.conf.em1.proxy_ndp = 0
net.ipv6.conf.em1.accept_source_route = 0
net.ipv6.conf.em1.optimistic_dad = 0
net.ipv6.conf.em1.mc_forwarding = 0
net.ipv6.conf.em1.disable_ipv6 = 0
net.ipv6.conf.em1.accept_dad = 1
net.ipv6.conf.em2.forwarding = 0
net.ipv6.conf.em2.hop_limit = 64
net.ipv6.conf.em2.mtu = 1500
net.ipv6.conf.em2.accept_ra = 1
net.ipv6.conf.em2.accept_redirects = 1
net.ipv6.conf.em2.autoconf = 1
net.ipv6.conf.em2.dad_transmits = 1
net.ipv6.conf.em2.router_solicitations = 3
net.ipv6.conf.em2.router_solicitation_interval= 4
net.ipv6.conf.em2.router_solicitation_delay= 1
net.ipv6.conf.em2.force_mld_version = 0
net.ipv6.conf.em2.use_tempaddr = 0
net.ipv6.conf.em2.temp_valid_lft = 604800
net.ipv6.conf.em2.temp_prefered_lft = 86400
net.ipv6.conf.em2.regen_max_retry = 5
net.ipv6.conf.em2.max_desync_factor = 600
net.ipv6.conf.em2.max_addresses = 16
net.ipv6.conf.em2.accept_ra_defrtr = 1
net.ipv6.conf.em2.accept_ra_pinfo = 1
net.ipv6.conf.em2.accept_ra_rtr_pref = 1
net.ipv6.conf.em2.router_probe_interval =60
net.ipv6.conf.em2.accept_ra_rt_info_max_plen= 0
net.ipv6.conf.em2.proxy_ndp = 0
net.ipv6.conf.em2.accept_source_route = 0
net.ipv6.conf.em2.optimistic_dad = 0
net.ipv6.conf.em2.mc_forwarding = 0
net.ipv6.conf.em2.disable_ipv6 = 0
net.ipv6.conf.em2.accept_dad = 1
net.ipv6.conf.bond0.forwarding = 0
net.ipv6.conf.bond0.hop_limit = 64
net.ipv6.conf.bond0.mtu = 1500
net.ipv6.conf.bond0.accept_ra = 1
net.ipv6.conf.bond0.accept_redirects = 1
net.ipv6.conf.bond0.autoconf = 1
net.ipv6.conf.bond0.dad_transmits = 1
net.ipv6.conf.bond0.router_solicitations =3
net.ipv6.conf.bond0.router_solicitation_interval= 4
net.ipv6.conf.bond0.router_solicitation_delay= 1
net.ipv6.conf.bond0.force_mld_version = 0
net.ipv6.conf.bond0.use_tempaddr = 0
net.ipv6.conf.bond0.temp_valid_lft = 604800
net.ipv6.conf.bond0.temp_prefered_lft =86400
net.ipv6.conf.bond0.regen_max_retry = 5
net.ipv6.conf.bond0.max_desync_factor = 600
net.ipv6.conf.bond0.max_addresses = 16
net.ipv6.conf.bond0.accept_ra_defrtr = 1
net.ipv6.conf.bond0.accept_ra_pinfo = 1
net.ipv6.conf.bond0.accept_ra_rtr_pref = 1
net.ipv6.conf.bond0.router_probe_interval =60
net.ipv6.conf.bond0.accept_ra_rt_info_max_plen= 0
net.ipv6.conf.bond0.proxy_ndp = 0
net.ipv6.conf.bond0.accept_source_route = 0
net.ipv6.conf.bond0.optimistic_dad = 0
net.ipv6.conf.bond0.mc_forwarding = 0
net.ipv6.conf.bond0.disable_ipv6 = 0
net.ipv6.conf.bond0.accept_dad = 1
net.ipv6.ip6frag_high_thresh = 262144
net.ipv6.ip6frag_low_thresh = 196608
net.ipv6.ip6frag_time = 60
net.ipv6.route.gc_thresh = 1024
net.ipv6.route.max_size = 4096
net.ipv6.route.gc_min_interval = 0
net.ipv6.route.gc_timeout = 60
net.ipv6.route.gc_interval = 30
net.ipv6.route.gc_elasticity = 0
net.ipv6.route.mtu_expires = 600
net.ipv6.route.min_adv_mss = 1
net.ipv6.route.gc_min_interval_ms = 500
net.ipv6.icmp.ratelimit = 1000
net.ipv6.bindv6only = 0
net.ipv6.ip6frag_secret_interval = 600
net.ipv6.mld_max_msf = 64
net.nf_conntrack_max = 65536
net.bridge.bridge-nf-call-arptables = 1
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-filter-vlan-tagged = 0
net.bridge.bridge-nf-filter-pppoe-tagged =0
net.unix.max_dgram_qlen = 10
abi.vsyscall32 = 1
crypto.fips_enabled = 0
sunrpc.rpc_debug = 0
sunrpc.nfs_debug = 0
sunrpc.nfsd_debug = 0
sunrpc.nlm_debug = 0
sunrpc.transports = tcp 1048576
sunrpc.transports = udp 32768
sunrpc.udp_slot_table_entries = 16
sunrpc.tcp_slot_table_entries = 16
sunrpc.min_resvport = 665
sunrpc.max_resvport = 1023
sunrpc.tcp_fin_timeout = 15
2.2 exadata x2-2配置
#
########### BEGIN DO NOT REMOVE Added byOracle Exadata ###########
# 13630226 Maximum shared memory allowed is85 percent of physical RAM
kernel.shmmax = 86038141747
# 13630226 Maximum shared memory pagesallowed are RAM divided by page size
kernel.shmall = 21005405
kernel.exec-shield = 1
kernel.randomize_va_space = 1
kernel.sysrq = 1
# 8778821 system reboots after 60 sec onpanic
kernel.panic = 60
kernel.softlockup_panic = 1
# 13601543 Allow crash dump from ILOM NMI
kernel.unknown_nmi_panic = 1
kernel.core_uses_pid = 1
vm.nr_hugepages = 1024
# 8311668 file-max and aio-max-nr also fromoracle-validated-1.0.0-24.el5.x86_64.rpm
kernel.msgmni = 2878
kernel.msgmax = 8192
kernel.msgmnb = 65536
kernel.shmmni = 4096
fs.file-max = 6815744
fs.aio-max-nr = 3145728
net.ipv4.ip_local_port_range = 9000 65500
vm.min_free_kbytes = 51200
net.core.rmem_default = 4194304
net.core.wmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_max = 2097152
# 13800950
kernel.pid_max = 131072
kernel.sem = 1024 60000 1024 256
net.ipv4.ip_forward = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
# 13331647
net.ipv4.tcp_max_syn_backlog = 1280
net.ipv4.conf.default.accept_source_route =0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses= 1
net.ipv4.tcp_syncookies = 1
net.ipv6.conf.default.router_solicitations= 0
net.ipv6.conf.default.accept_ra_rtr_pref =0
net.ipv6.conf.default.accept_ra_pinfo = 0
net.ipv6.conf.default.accept_ra_defrtr = 0
net.ipv6.conf.default.autoconf = 0
net.ipv6.conf.default.dad_transmits = 0
net.ipv6.conf.default.max_addresses = 1
# 12650500
net.ipv4.tcp_timestamps = 0
net.ipv4.conf.default.rp_filter = 1
# 8976963, 10113636
net.ipv4.neigh.bondib0.locktime = 0
net.ipv4.conf.bondib0.arp_ignore = 1
net.ipv4.conf.bondib0.arp_accept = 1
net.ipv4.neigh.bondib0.base_reachable_time_ms= 10000
net.ipv4.neigh.bondib0.delay_first_probe_time= 1
########### END DO NOT REMOVE Added byOracle Exadata ###########
vm.nr_hugepages=13007s
其他
net.core.netdev_max_backlog = 30000 每个网络接口接收数据包的速率比内核处理这些包的速率快时，允许送到队列的数据包的最大数目
net.ipv4.tcp_mem = 786432 1048576 1572864 确定 TCP 栈应该如何反映内存使用，此处分别为3G、4G、6G；每个值的单位都是内存页（通常是4KB）。第一个值是内存使用的下限。第二个值是内存压力模式开始对缓冲区使用应用压力的上限。第三个值是内存上限。在这个层次上可以将报文丢弃，从而减少对内存的使用。
net.ipv4.tcp_rmem=4096 87380 16777216 TCP接收缓冲区，3个字段分别是min，default，max。Min：为TCP socket预留用于接收缓冲的内存数量，即使在内存出现紧张情况下TCP socket都至少会有这么多数量的内存用于接收缓冲。
Default：为TCP socket预留用于接收缓冲的内存数量，默认情况下该值影响其它协议使用的 net.core.wmem中default的值。该值决定了 在tcp_adv_win_scale、tcp_app_win和tcp_app_win的 默认值情况下，TCP 窗口大小为65535。
Max：为TCP socket预留用于接收缓冲的内存最大值。该值不会影响 net.core.wmem中max的值
net.ipv4.tcp_wmem=4096 65536 16777216 TCP发送缓冲区，3个字段分别是min，default，max。Min：为TCP socket预留用于发送缓冲的内存最小值。每个TCP socket都可以使用它。
Default：为TCP socket预留用于发送缓冲的内存数量，默认情况下该值会影响其它协议使用的net.core.wmem中default的值，一般要低于net.core.wmem中default的值。
分享题目：LINUX下ORACLE相关的内核参数详解
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