Linux/CGP作業メモ

■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]