■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。
- # sysctl -a
kernel情報とdiffを取った結果。
- # 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