CentOS6.xのELrepo Kernel パラメータ差分メモ■CentOS6.xのELrepo Kernel パラメータ差分メモ
 前記事で導入したELrepoのKernel3.0.68とCentOS6.3のkernel2.6.32のkernelパラメータの差分を取ってみたのでメモしておく。

以下のコマンドで取得したパラメータをそれぞれのカーネルで起動して取得。
[code]# sysctl -a[/code]

kernel情報とdiffを取った結果。
[code]# uname -a
Linux localhost.localdomain 3.0.68-1.el6.elrepo.i686 #1 SMP Mon Mar 4 00:29:41 EST 2013 i686 i686 i386 GNU/Linux

# diff k3s.txt k2s.txt
45c45
< fs.dentry-state = 10635 4581 45 0 0 0 --- > fs.dentry-state = 10781 5172 45 0 0 0
47,51c47,51
< fs.epoll.max_user_watches = 345206 < fs.file-max = 100510 < fs.file-nr = 672 0 100510 < fs.inode-nr = 9825 756 < fs.inode-state = 9825 756 0 0 0 0 0 --- > fs.epoll.max_user_watches = 331776
> fs.file-max = 100902
> fs.file-nr = 672 0 100902
> fs.inode-nr = 9968 218
> fs.inode-state = 9968 218 0 0 0 0 0
56a57
> fs.mqueue.msg_default = 10
57a59
> fs.mqueue.msgsize_default = 8192
63d64
< fs.pipe-max-size = 1048576 70a72 > fs.quota.warnings = 1
85a88
> kernel.exec-shield = 1
87d89
< kernel.ftrace_enabled = 1 94a97 > kernel.kexec_load_disabled = 0
100c103
< kernel.kptr_restrict = 0 --- > kernel.kptr_restrict = 1
107c110
< kernel.msgmni = 1740 --- > kernel.msgmni = 1736
110c113
< kernel.osrelease = 3.0.68-1.el6.elrepo.i686 --- > kernel.osrelease = 2.6.32-279.22.1.el6.i686
116c119
< kernel.panic_on_oops = 0 --- > kernel.panic_on_oops = 1
129,131c132,134
< kernel.pty.nr = 1 < kernel.random.boot_id = f6ba4b47-c313-4466-9e3f-2e96cae9d48c < kernel.random.entropy_avail = 1247 --- > kernel.pty.nr = 2
> kernel.random.boot_id = 31a3cfc3-28b9-4b80-a174-7c8af4ae3590
> kernel.random.entropy_avail = 131
134c137
< kernel.random.uuid = 11a6f5a8-2b73-402a-8f3c-d24da95c6ccb --- > kernel.random.uuid = 0ec9460c-05d5-4552-9855-9705f3dee9a0
138c141,142
< kernel.sched_autogroup_enabled = 1 --- > kernel.sched_autogroup_enabled = 0
> kernel.sched_cfs_bandwidth_slice_us = 5000
140c144,146
< kernel.sched_latency_ns = 6000000 --- > kernel.sched_compat_yield = 0
> kernel.sched_features = 3183
> kernel.sched_latency_ns = 5000000
142c148
< kernel.sched_min_granularity_ns = 750000 --- > kernel.sched_min_granularity_ns = 1000000
150a157
> kernel.shm_rmid_forced = 0
153a161,163
> kernel.slow-work.max-threads = 4
> kernel.slow-work.min-threads = 2
> kernel.slow-work.vslow-percentage = 50
155d164
< kernel.stack_tracer_enabled = 0 158c167 < kernel.threads-max = 15806 --- > kernel.threads-max = 15876
163c172
< kernel.version = #1 SMP Mon Mar 4 00:29:41 EST 2013 --- > kernel.version = #1 SMP Wed Feb 6 00:31:03 UTC 2013
165c174
< kernel.watchdog_thresh = 10 --- > kernel.watchdog_thresh = 60
171d179
< net.core.netdev_tstamp_prequeue = 1 173c181 < net.core.rmem_default = 114688 --- > net.core.rmem_default = 188416
178c186
< net.core.wmem_default = 114688 --- > net.core.wmem_default = 188416
398,420d405
< net.ipv4.netfilter.ip_conntrack_buckets = 16384 < net.ipv4.netfilter.ip_conntrack_checksum = 1 < net.ipv4.netfilter.ip_conntrack_count = 16 < net.ipv4.netfilter.ip_conntrack_generic_timeout = 600 < net.ipv4.netfilter.ip_conntrack_icmp_timeout = 30 < net.ipv4.netfilter.ip_conntrack_log_invalid = 0 < net.ipv4.netfilter.ip_conntrack_max = 64172 < net.ipv4.netfilter.ip_conntrack_tcp_be_liberal = 0 < net.ipv4.netfilter.ip_conntrack_tcp_loose = 1 < net.ipv4.netfilter.ip_conntrack_tcp_max_retrans = 3 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_close = 10 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait = 60 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_established = 432000 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait = 120 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_last_ack = 30 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_max_retrans = 300 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_syn_recv = 60 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_syn_sent = 120 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_syn_sent2 = 120 < net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait = 120 < net.ipv4.netfilter.ip_conntrack_udp_timeout = 30 < net.ipv4.netfilter.ip_conntrack_udp_timeout_stream = 180 < net.ipv4.ping_group_range = 1 0 425d409 < net.ipv4.route.gc_interval = 60 436a421 > net.ipv4.route.secret_interval = 600
440c425
< net.ipv4.tcp_adv_win_scale = 1 --- > net.ipv4.tcp_adv_win_scale = 2
445d429
< net.ipv4.tcp_challenge_ack_limit = 100 447d430 < net.ipv4.tcp_cookie_size = 0 463c446 < net.ipv4.tcp_mem = 21180 28243 42360 --- > net.ipv4.tcp_mem = 81984 109312 163968
473c456
< net.ipv4.tcp_rmem = 4096 87380 903776 --- > net.ipv4.tcp_rmem = 4096 87380 3497984
487c470
< net.ipv4.tcp_wmem = 4096 16384 903776 --- > net.ipv4.tcp_wmem = 4096 16384 3497984
489c472
< net.ipv4.udp_mem = 21180 28243 42360 --- > net.ipv4.udp_mem = 81984 109312 163968
506d488
< net.ipv6.conf.all.force_tllao = 0 535d516 < net.ipv6.conf.default.force_tllao = 0 564d544 < net.ipv6.conf.eth0.force_tllao = 0 593d572 < net.ipv6.conf.eth1.force_tllao = 0 622d600 < net.ipv6.conf.lo.force_tllao = 0 697c675 < net.ipv6.route.gc_elasticity = 9 --- > net.ipv6.route.gc_elasticity = 0
704c682
< net.ipv6.route.min_adv_mss = 1220 --- > net.ipv6.route.min_adv_mss = 1
710c688
< net.netfilter.nf_conntrack_count = 16 --- > net.netfilter.nf_conntrack_count = 1
717c695
< net.netfilter.nf_conntrack_max = 64172 --- > net.netfilter.nf_conntrack_max = 64432
746c724
< net.nf_conntrack_max = 64172 --- > net.nf_conntrack_max = 64432
756a735
> vm.extra_free_kbytes = 0
764,766c743
< vm.min_free_kbytes = 44904 < vm.min_slab_ratio = 5 < vm.min_unmapped_ratio = 1 --- > vm.min_free_kbytes = 3794
769d745
< vm.nr_hugepages_mempolicy = 0 772d747 < vm.numa_zonelist_order = default 785c760 < vm.zone_reclaim_mode = 0 --- > vm.would_have_oomkilled = 0[/code]

, ,
とりあえず付けておく無駄ではなかったなまぁまぁ読めたちょっと役に立ったかなかなり良かったかも (まだ評価されていません)
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