■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]
centos, diff, kernel
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■CentOS5.xのELrepo Kernel パラメータ差分メモ
前記事で導入したELrepoのKernel3.0.66とCentOS5.9のkernel2.1.18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]
diffを取った結果。
[code]# cat k3-diff-k2.txt
2d1
< debug.exception-trace = 1
26c25
< dev.cdrom.info = Can write RAM: 1
---
dev.cdrom.info = Can write RAM: 0
29c28
< dev.cdrom.info = drive name: sr0
---
dev.cdrom.info = drive name: hdc
36a36
dev.rtc.max-user-freq = 64
41c41
< fs.dentry-state = 6192 4181 45 0 0 0
---
fs.dentry-state = 3892 2599 45 0 0 0
43,47c43,46
< fs.epoll.max_user_watches = 200546
< fs.file-max = 50584
< fs.file-nr = 224 0 50584
< fs.inode-nr = 5754 354
< fs.inode-state = 5754 354 0 0 0 0 0
---
fs.file-max = 51100
fs.file-nr = 192 0 51100
fs.inode-nr = 3429 136
fs.inode-state = 3429 136 0 0 0 0 0
59d57
< fs.pipe-max-size = 1048576
66c64,65
< fs.quota.syncs = 0
---
fs.quota.syncs = 20
fs.quota.warnings = 1
71d69
< kernel.auto_msgmni = 1
74d71
< kernel.bootloader_version = 1
75a73
kernel.cap-bound = -257
77d74
< kernel.core_pipe_limit = 0
82,83c79
< kernel.ftrace_dump_on_oops = 0
< kernel.ftrace_enabled = 1
---
kernel.exec-shield = 1
90,91d85
< kernel.io_delay_type = 0
< kernel.keys.gc_delay = 300
96,97d89
< kernel.kptr_restrict = 0
< kernel.kstack_depth_to_print = 24
103c95
< kernel.msgmni = 1001
---
kernel.msgmni = 16
105,106c97,98
< kernel.nmi_watchdog = 1
< kernel.osrelease = 3.0.66-1.el5.elrepo
---
kernel.nmi_watchdog = 0
kernel.osrelease = 2.6.18-348.1.1.el5
111,112c103
< kernel.panic_on_io_nmi = 0
< kernel.panic_on_oops = 0
---
kernel.panic_on_oops = 1
114,116d104
< kernel.perf_event_max_sample_rate = 100000
< kernel.perf_event_mlock_kb = 516
< kernel.perf_event_paranoid = 1
118d105
< kernel.poweroff_cmd = /sbin/poweroff
121d107
< kernel.printk_delay = 0
126,127c112,113
< kernel.random.boot_id = 883b8f61-6fd5-42fb-9287-c08e4aaa7d3b
< kernel.random.entropy_avail = 457
---
kernel.random.boot_id = ed819e04-5a67-4c80-b57c-00953773b11e
kernel.random.entropy_avail = 354
130c116
< kernel.random.uuid = 1c11957b-b8e2-4e0b-bab1-dec3633f88b5
---
kernel.random.uuid = 55467d54-5ae5-4b5b-a8c8-f3fabea6264e
132c118
< kernel.randomize_va_space = 2
---
kernel.randomize_va_space = 1
134,145c120
< kernel.sched_autogroup_enabled = 1
< kernel.sched_child_runs_first = 0
< kernel.sched_latency_ns = 6000000
< kernel.sched_migration_cost = 500000
< kernel.sched_min_granularity_ns = 750000
< kernel.sched_nr_migrate = 32
< kernel.sched_rt_period_us = 1000000
< kernel.sched_rt_runtime_us = 950000
< kernel.sched_shares_window = 10000000
< kernel.sched_time_avg = 1000
< kernel.sched_tunable_scaling = 1
< kernel.sched_wakeup_granularity_ns = 1000000
---
kernel.sched_interactive = 2
150a126
kernel.softlockup_thresh = 60
153,154c129
< kernel.threads-max = 7957
< kernel.timer_migration = 1
---
kernel.threads-max = 15976
156,160c131,133
< kernel.usermodehelper.bset = 4294967295 4294967295
< kernel.usermodehelper.inheritable = 4294967295 4294967295
< kernel.version = #1 SMP PREEMPT Thu Feb 21 15:32:49 EST 2013
< kernel.watchdog = 1
< kernel.watchdog_thresh = 10
---
kernel.vdso = 1
kernel.vdso_populate = 0
kernel.version = #1 SMP Tue Jan 22 16:24:03 EST 2013
166d138
< net.core.netdev_tstamp_prequeue = 1
168,170c140,141
< net.core.rmem_default = 114688
< net.core.rmem_max = 114688
< net.core.rps_sock_flow_entries = 0
---
net.core.rmem_default = 110592
net.core.rmem_max = 110592
172,174c143,144
< net.core.warnings = 1
< net.core.wmem_default = 114688
< net.core.wmem_max = 114688
---
net.core.wmem_default = 110592
net.core.wmem_max = 110592
178c148
< net.core.xfrm_larval_drop = 1
---
net.core.xfrm_larval_drop = 0
190d159
< net.ipv4.conf.all.arp_notify = 0
201d169
< net.ipv4.conf.all.proxy_arp_pvlan = 0
206d173
< net.ipv4.conf.all.src_valid_mark = 0
215d181
< net.ipv4.conf.default.arp_notify = 0
226d191
< net.ipv4.conf.default.proxy_arp_pvlan = 0
231d195
< net.ipv4.conf.default.src_valid_mark = 0
240d203
< net.ipv4.conf.eth0.arp_notify = 0
251d213
< net.ipv4.conf.eth0.proxy_arp_pvlan = 0
256d217
< net.ipv4.conf.eth0.src_valid_mark = 0
265d225
< net.ipv4.conf.eth1.arp_notify = 0
276d235
< net.ipv4.conf.eth1.proxy_arp_pvlan = 0
281d239
< net.ipv4.conf.eth1.src_valid_mark = 0
290d247
< net.ipv4.conf.eth2.arp_notify = 0
301d257
< net.ipv4.conf.eth2.proxy_arp_pvlan = 0
306d261
< net.ipv4.conf.eth2.src_valid_mark = 0
310c265
< net.ipv4.conf.lo.accept_source_route = 0
---
net.ipv4.conf.lo.accept_source_route = 1
315d269
< net.ipv4.conf.lo.arp_notify = 0
326,327c280
< net.ipv4.conf.lo.proxy_arp_pvlan = 0
< net.ipv4.conf.lo.rp_filter = 1
---
net.ipv4.conf.lo.rp_filter = 0
331d283
< net.ipv4.conf.lo.src_valid_mark = 0
432d383
< net.ipv4.ping_group_range = 1 0
437d387
< net.ipv4.route.gc_interval = 60
441a392
net.ipv4.route.max_delay = 10
443a395
net.ipv4.route.min_delay = 2
449c401,402
< net.ipv4.rt_cache_rebuild_count = 4
---
net.ipv4.route.rt_cache_rebuild_count = 4
net.ipv4.route.secret_interval = 600
452,453c405
< net.ipv4.tcp_adv_win_scale = 1
< net.ipv4.tcp_allowed_congestion_control = bic reno
---
net.ipv4.tcp_adv_win_scale = 2
455d406
< net.ipv4.tcp_available_congestion_control = bic reno
457d407
< net.ipv4.tcp_challenge_ack_limit = 100
459d408
< net.ipv4.tcp_cookie_size = 0
462c411
< net.ipv4.tcp_ecn = 2
---
net.ipv4.tcp_ecn = 0
465,466c414
< net.ipv4.tcp_frto = 2
< net.ipv4.tcp_frto_response = 0
---
net.ipv4.tcp_frto = 0
471,475c419,422
< net.ipv4.tcp_max_orphans = 8192
< net.ipv4.tcp_max_ssthresh = 0
< net.ipv4.tcp_max_syn_backlog = 128
< net.ipv4.tcp_max_tw_buckets = 8192
< net.ipv4.tcp_mem = 12177 16239 24354
---
net.ipv4.tcp_max_orphans = 4096
net.ipv4.tcp_max_syn_backlog = 1024
net.ipv4.tcp_max_tw_buckets = 180000
net.ipv4.tcp_mem = 12288 16384 24576
485c432
< net.ipv4.tcp_rmem = 4096 87380 519648
---
net.ipv4.tcp_rmem = 4096 87380 524288
492,493d438
< net.ipv4.tcp_thin_dupack = 0
< net.ipv4.tcp_thin_linear_timeouts = 0
499c444
< net.ipv4.tcp_wmem = 4096 16384 519648
---
net.ipv4.tcp_wmem = 4096 16384 524288
501c446
< net.ipv4.udp_mem = 12177 16239 24354
---
net.ipv4.udp_mem = 49056 65408 98112
504,517d448
< net.ipv4.xfrm4_gc_thresh = 32768
< net.netfilter.nf_log.0 = NONE
< net.netfilter.nf_log.1 = NONE
< net.netfilter.nf_log.10 = NONE
< net.netfilter.nf_log.11 = NONE
< net.netfilter.nf_log.12 = 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
525c456
< vm.dirty_ratio = 20
---
vm.dirty_ratio = 40
528,530c459
< vm.extfrag_threshold = 500
< vm.highmem_is_dirtyable = 0
< vm.hugepages_treat_as_movable = 0
---
vm.flush_mmap_pages = 1
534,536c463,467
< vm.lowmem_reserve_ratio = 256 32 32
< vm.max_map_count = 65530
< vm.min_free_kbytes = 2883
---
vm.lowmem_reserve_ratio = 256 256 32
vm.max_map_count = 65536
vm.max_reclaims_in_progress = 0
vm.max_writeback_pages = 1024
vm.min_free_kbytes = 2896
539,542c470
< vm.nr_overcommit_hugepages = 0
< vm.nr_pdflush_threads = 0
< vm.oom_dump_tasks = 1
< vm.oom_kill_allocating_task = 0
---
vm.nr_pdflush_threads = 2
545a474
vm.pagecache = 100
548,549c477
< vm.scan_unevictable_pages = 0
< vm.stat_interval = 1
---
vm.swap_token_timeout = 300
550a479
vm.topdown_allocate_fast = 0
552a482
vm.vm_devzero_optimized = 1[/code]
centos, diff, kernel
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