{"id":2329,"date":"2013-03-01T00:02:45","date_gmt":"2013-02-28T15:02:45","guid":{"rendered":"http:\/\/blog.isnext.net\/issy\/?p=2329"},"modified":"2013-03-01T00:05:58","modified_gmt":"2013-02-28T15:05:58","slug":"centos5-x%e3%81%aekernel%e3%83%91%e3%83%a9%e3%83%a1%e3%83%bc%e3%82%bf%e5%b7%ae%e5%88%86%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/blog.isnext.net\/issy\/archives\/2329","title":{"rendered":"CentOS5.x\u306eELrepo Kernel \u30d1\u30e9\u30e1\u30fc\u30bf\u5dee\u5206\u30e1\u30e2"},"content":{"rendered":"<p><strong>\u25a0CentOS5.x\u306eELrepo Kernel \u30d1\u30e9\u30e1\u30fc\u30bf\u5dee\u5206\u30e1\u30e2<\/strong><br \/>\n\u3000\u524d\u8a18\u4e8b\u3067\u5c0e\u5165\u3057\u305fELrepo\u306eKernel3.0.66\u3068CentOS5.9\u306ekernel2.1.18\u306ekernel\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u5dee\u5206\u3092\u53d6\u3063\u3066\u307f\u305f\u306e\u3067\u30e1\u30e2\u3057\u3066\u304a\u304f\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u53d6\u5f97\u3057\u305f\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u305d\u308c\u305e\u308c\u306e\u30ab\u30fc\u30cd\u30eb\u3067\u8d77\u52d5\u3057\u3066\u53d6\u5f97\u3002<br \/>\n[code]# sysctl -a[\/code]<\/p>\n<p>diff\u3092\u53d6\u3063\u305f\u7d50\u679c\u3002<br \/>\n[code]# cat k3-diff-k2.txt<br \/>\n2d1<br \/>\n< debug.exception-trace = 1\n26c25\n< dev.cdrom.info = Can write RAM:               1\n---\ndev.cdrom.info = Can write RAM:               0\n29c28\n< dev.cdrom.info = drive name:          sr0\n---\ndev.cdrom.info = drive name:          hdc\n36a36\ndev.rtc.max-user-freq = 64\n41c41\n< fs.dentry-state = 6192        4181    45      0       0       0\n---\nfs.dentry-state = 3892        2599    45      0       0       0\n43,47c43,46\n< fs.epoll.max_user_watches = 200546\n< fs.file-max = 50584\n< fs.file-nr = 224      0       50584\n< fs.inode-nr = 5754    354\n< fs.inode-state = 5754 354     0       0       0       0       0\n---\nfs.file-max = 51100\nfs.file-nr = 192      0       51100\nfs.inode-nr = 3429    136\nfs.inode-state = 3429 136     0       0       0       0       0\n59d57\n< fs.pipe-max-size = 1048576\n66c64,65\n< fs.quota.syncs = 0\n---\nfs.quota.syncs = 20\nfs.quota.warnings = 1\n71d69\n< kernel.auto_msgmni = 1\n74d71\n< kernel.bootloader_version = 1\n75a73\nkernel.cap-bound = -257\n77d74\n< kernel.core_pipe_limit = 0\n82,83c79\n< kernel.ftrace_dump_on_oops = 0\n< kernel.ftrace_enabled = 1\n---\nkernel.exec-shield = 1\n90,91d85\n< kernel.io_delay_type = 0\n< kernel.keys.gc_delay = 300\n96,97d89\n< kernel.kptr_restrict = 0\n< kernel.kstack_depth_to_print = 24\n103c95\n< kernel.msgmni = 1001\n---\nkernel.msgmni = 16\n105,106c97,98\n< kernel.nmi_watchdog = 1\n< kernel.osrelease = 3.0.66-1.el5.elrepo\n---\nkernel.nmi_watchdog = 0\nkernel.osrelease = 2.6.18-348.1.1.el5\n111,112c103\n< kernel.panic_on_io_nmi = 0\n< kernel.panic_on_oops = 0\n---\nkernel.panic_on_oops = 1\n114,116d104\n< kernel.perf_event_max_sample_rate = 100000\n< kernel.perf_event_mlock_kb = 516\n< kernel.perf_event_paranoid = 1\n118d105\n< kernel.poweroff_cmd = \/sbin\/poweroff\n121d107\n< kernel.printk_delay = 0\n126,127c112,113\n< kernel.random.boot_id = 883b8f61-6fd5-42fb-9287-c08e4aaa7d3b\n< kernel.random.entropy_avail = 457\n---\nkernel.random.boot_id = ed819e04-5a67-4c80-b57c-00953773b11e\nkernel.random.entropy_avail = 354\n130c116\n< kernel.random.uuid = 1c11957b-b8e2-4e0b-bab1-dec3633f88b5\n---\nkernel.random.uuid = 55467d54-5ae5-4b5b-a8c8-f3fabea6264e\n132c118\n< kernel.randomize_va_space = 2\n---\nkernel.randomize_va_space = 1\n134,145c120\n< kernel.sched_autogroup_enabled = 1\n< kernel.sched_child_runs_first = 0\n< kernel.sched_latency_ns = 6000000\n< kernel.sched_migration_cost = 500000\n< kernel.sched_min_granularity_ns = 750000\n< kernel.sched_nr_migrate = 32\n< kernel.sched_rt_period_us = 1000000\n< kernel.sched_rt_runtime_us = 950000\n< kernel.sched_shares_window = 10000000\n< kernel.sched_time_avg = 1000\n< kernel.sched_tunable_scaling = 1\n< kernel.sched_wakeup_granularity_ns = 1000000\n---\nkernel.sched_interactive = 2\n150a126\nkernel.softlockup_thresh = 60\n153,154c129\n< kernel.threads-max = 7957\n< kernel.timer_migration = 1\n---\nkernel.threads-max = 15976\n156,160c131,133\n< kernel.usermodehelper.bset = 4294967295       4294967295\n< kernel.usermodehelper.inheritable = 4294967295        4294967295\n< kernel.version = #1 SMP PREEMPT Thu Feb 21 15:32:49 EST 2013\n< kernel.watchdog = 1\n< kernel.watchdog_thresh = 10\n---\nkernel.vdso = 1\nkernel.vdso_populate = 0\nkernel.version = #1 SMP Tue Jan 22 16:24:03 EST 2013\n166d138\n< net.core.netdev_tstamp_prequeue = 1\n168,170c140,141\n< net.core.rmem_default = 114688\n< net.core.rmem_max = 114688\n< net.core.rps_sock_flow_entries = 0\n---\nnet.core.rmem_default = 110592\nnet.core.rmem_max = 110592\n172,174c143,144\n< net.core.warnings = 1\n< net.core.wmem_default = 114688\n< net.core.wmem_max = 114688\n---\nnet.core.wmem_default = 110592\nnet.core.wmem_max = 110592\n178c148\n< net.core.xfrm_larval_drop = 1\n---\nnet.core.xfrm_larval_drop = 0\n190d159\n< net.ipv4.conf.all.arp_notify = 0\n201d169\n< net.ipv4.conf.all.proxy_arp_pvlan = 0\n206d173\n< net.ipv4.conf.all.src_valid_mark = 0\n215d181\n< net.ipv4.conf.default.arp_notify = 0\n226d191\n< net.ipv4.conf.default.proxy_arp_pvlan = 0\n231d195\n< net.ipv4.conf.default.src_valid_mark = 0\n240d203\n< net.ipv4.conf.eth0.arp_notify = 0\n251d213\n< net.ipv4.conf.eth0.proxy_arp_pvlan = 0\n256d217\n< net.ipv4.conf.eth0.src_valid_mark = 0\n265d225\n< net.ipv4.conf.eth1.arp_notify = 0\n276d235\n< net.ipv4.conf.eth1.proxy_arp_pvlan = 0\n281d239\n< net.ipv4.conf.eth1.src_valid_mark = 0\n290d247\n< net.ipv4.conf.eth2.arp_notify = 0\n301d257\n< net.ipv4.conf.eth2.proxy_arp_pvlan = 0\n306d261\n< net.ipv4.conf.eth2.src_valid_mark = 0\n310c265\n< net.ipv4.conf.lo.accept_source_route = 0\n---\nnet.ipv4.conf.lo.accept_source_route = 1\n315d269\n< net.ipv4.conf.lo.arp_notify = 0\n326,327c280\n< net.ipv4.conf.lo.proxy_arp_pvlan = 0\n< net.ipv4.conf.lo.rp_filter = 1\n---\nnet.ipv4.conf.lo.rp_filter = 0\n331d283\n< net.ipv4.conf.lo.src_valid_mark = 0\n432d383\n< net.ipv4.ping_group_range = 1 0\n437d387\n< net.ipv4.route.gc_interval = 60\n441a392\nnet.ipv4.route.max_delay = 10\n443a395\nnet.ipv4.route.min_delay = 2\n449c401,402\n< net.ipv4.rt_cache_rebuild_count = 4\n---\nnet.ipv4.route.rt_cache_rebuild_count = 4\nnet.ipv4.route.secret_interval = 600\n452,453c405\n< net.ipv4.tcp_adv_win_scale = 1\n< net.ipv4.tcp_allowed_congestion_control = bic reno\n---\nnet.ipv4.tcp_adv_win_scale = 2\n455d406\n< net.ipv4.tcp_available_congestion_control = bic reno\n457d407\n< net.ipv4.tcp_challenge_ack_limit = 100\n459d408\n< net.ipv4.tcp_cookie_size = 0\n462c411\n< net.ipv4.tcp_ecn = 2\n---\nnet.ipv4.tcp_ecn = 0\n465,466c414\n< net.ipv4.tcp_frto = 2\n< net.ipv4.tcp_frto_response = 0\n---\nnet.ipv4.tcp_frto = 0\n471,475c419,422\n< net.ipv4.tcp_max_orphans = 8192\n< net.ipv4.tcp_max_ssthresh = 0\n< net.ipv4.tcp_max_syn_backlog = 128\n< net.ipv4.tcp_max_tw_buckets = 8192\n< net.ipv4.tcp_mem = 12177      16239   24354\n---\nnet.ipv4.tcp_max_orphans = 4096\nnet.ipv4.tcp_max_syn_backlog = 1024\nnet.ipv4.tcp_max_tw_buckets = 180000\nnet.ipv4.tcp_mem = 12288      16384   24576\n485c432\n< net.ipv4.tcp_rmem = 4096      87380   519648\n---\nnet.ipv4.tcp_rmem = 4096      87380   524288\n492,493d438\n< net.ipv4.tcp_thin_dupack = 0\n< net.ipv4.tcp_thin_linear_timeouts = 0\n499c444\n< net.ipv4.tcp_wmem = 4096      16384   519648\n---\nnet.ipv4.tcp_wmem = 4096      16384   524288\n501c446\n< net.ipv4.udp_mem = 12177      16239   24354\n---\nnet.ipv4.udp_mem = 49056      65408   98112\n504,517d448\n< net.ipv4.xfrm4_gc_thresh = 32768\n< net.netfilter.nf_log.0 = NONE\n< net.netfilter.nf_log.1 = NONE\n< net.netfilter.nf_log.10 = NONE\n< net.netfilter.nf_log.11 = NONE\n< net.netfilter.nf_log.12 = NONE\n< net.netfilter.nf_log.2 = NONE\n< net.netfilter.nf_log.3 = NONE\n< net.netfilter.nf_log.4 = NONE\n< net.netfilter.nf_log.5 = NONE\n< net.netfilter.nf_log.6 = NONE\n< net.netfilter.nf_log.7 = NONE\n< net.netfilter.nf_log.8 = NONE\n< net.netfilter.nf_log.9 = NONE\n525c456\n< vm.dirty_ratio = 20\n---\nvm.dirty_ratio = 40\n528,530c459\n< vm.extfrag_threshold = 500\n< vm.highmem_is_dirtyable = 0\n< vm.hugepages_treat_as_movable = 0\n---\nvm.flush_mmap_pages = 1\n534,536c463,467\n< vm.lowmem_reserve_ratio = 256 32      32\n< vm.max_map_count = 65530\n< vm.min_free_kbytes = 2883\n---\nvm.lowmem_reserve_ratio = 256 256     32\nvm.max_map_count = 65536\nvm.max_reclaims_in_progress = 0\nvm.max_writeback_pages = 1024\nvm.min_free_kbytes = 2896\n539,542c470\n< vm.nr_overcommit_hugepages = 0\n< vm.nr_pdflush_threads = 0\n< vm.oom_dump_tasks = 1\n< vm.oom_kill_allocating_task = 0\n---\nvm.nr_pdflush_threads = 2\n545a474\nvm.pagecache = 100\n548,549c477\n< vm.scan_unevictable_pages = 0\n< vm.stat_interval = 1\n---\nvm.swap_token_timeout = 300\n550a479\nvm.topdown_allocate_fast = 0\n552a482\nvm.vm_devzero_optimized = 1[\/code]\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u25a0CentOS5.x\u306eELrepo Kernel \u30d1\u30e9\u30e1\u30fc\u30bf\u5dee\u5206\u30e1\u30e2 \u3000\u524d\u8a18\u4e8b\u3067\u5c0e\u5165\u3057\u305fELrepo\u306eKernel3.0.66\u3068CentOS5.9\u306ekernel2.1.18\u306ekernel\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u5dee\u5206\u3092\u53d6\u3063\u3066\u307f\u305f\u306e\u3067\u30e1 &hellip; <a href=\"https:\/\/blog.isnext.net\/issy\/archives\/2329\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;CentOS5.x\u306eELrepo Kernel \u30d1\u30e9\u30e1\u30fc\u30bf\u5dee\u5206\u30e1\u30e2&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[20,188,187],"class_list":["post-2329","post","type-post","status-publish","format-standard","hentry","category-linux","tag-centos","tag-diff","tag-kernel"],"_links":{"self":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts\/2329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/comments?post=2329"}],"version-history":[{"count":4,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts\/2329\/revisions"}],"predecessor-version":[{"id":2333,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts\/2329\/revisions\/2333"}],"wp:attachment":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/media?parent=2329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/categories?post=2329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/tags?post=2329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}