Linux/CGP作業メモ

■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]