Linuxのカーネルパラメータ

Linuxのカーネルの設定情報を、カーネルパラメータという。
カーネルパラメータによって、カーネルが提供するサービスの調整、例えばページファイルのサイズやセマフォ数などの変更が行える。

参照・変更方法

カーネルパラメータの参照や設定は、システムファイル「/proc/sys」を参照する方法と、コマンド「sysctl」を用いる方法の2つが代表的である。
ここでは、これらの利用方法について解説する。

システムファイル「/proc/sys」

/proc/sys以下に配置されたシステムファイルを操作することにより、カーネルパラメータを変更する。
ファイルのように扱えるため、Linux上の高度なシェル機能とも親和性が高く扱いやすい。
例えば、ホスト名を設定するような場合、echoコマンド等を利用して行える。

# echo hoge.fuga /proc/sys/kernel/hostname

逆に参照も容易に行える。

# cat /proc/sys/kernel/hostname
hoge.fuga

コマンド「sysctl」

コマンドによりカーネルパラメータを変更する。このコマンドは起動時にカーネルパラメータの初期化を行う際にも利用される。
設定であれば、以下のコマンドによって行える。

# sysctl -w kernel.hostname=hoge.fuga

逆の参照も、容易に行える。

# sysctl kernel.hostname
hoge.fuga

また、複数の設定情報を設定ファイル化して、コマンドによって読み込むことも可能である。

# sysctl -p /etc/sysctl.conf

カーネルパラメータの永続化

これまでに紹介してきたシステムファイル「/proc/sys」コマンド「sysctl」を用いる方法は、どれも起動中のカーネルの設定状態を参照・更新できるが、起動時には失われる。毎期同時に同じ設定を維持したい場合は、設定ファイルへ書き込んでおく必要がある。
設定は、「/etc/sysctl.conf」に記述されている。追記するなどして書き込めば、次回起動時から自動的に設定されるようになる。

# echo 'kernel.hostname = hoge.fuga' >> /etc/sysctl.conf


項目

本頁では、2.6.31に含まれるカーネルパラメータを前提とする。また、表記については、sysctlコマンドに統一する。
内容としては、以下の分類に分けられる。名前を見る限り、Linuxのカーネルソースコードの配置ディレクトリに一致するものと思われる。
量が多いため、ソースコードやマニュアル等を参考に理解でき次第掲載する。

# ls /proc/sys
crypto  debug  dev  fs  kernel  net  sunrpc  vm

crypto

  • 001 crypto.fips_enabled

debug

  • 001 debug.exception-trace

dev

  • 001 dev.scsi.logging_level
  • 002 dev.raid.speed_limit_min
  • 003 dev.raid.speed_limit_max
  • 004 dev.hpet.max-user-freq
  • 005 dev.mac_hid.mouse_button_emulation
  • 006 dev.mac_hid.mouse_button2_keycode
  • 007 dev.mac_hid.mouse_button3_keycode
  • 008 dev.cdrom.info
  • 009 dev.cdrom.autoclose
  • 010 dev.cdrom.autoeject
  • 011 dev.cdrom.debug
  • 012 dev.cdrom.lock
  • 013 dev.cdrom.check_media

fs

  • 001 fs.inode-nr
  • 002 fs.inode-state
  • 003 fs.file-nr
  • 004 fs.file-max
  • 005 fs.nr_open
  • 006 fs.dentry-state
  • 007 fs.overflowuid
  • 008 fs.overflowgid
  • 009 fs.leases-enable
  • 010 fs.dir-notify-enable
  • 011 fs.lease-break-time
  • 012 fs.aio-nr
  • 013 fs.aio-max-nr
  • 014 fs.inotify.max_user_instances
  • 015 fs.inotify.max_user_watches
  • 016 fs.inotify.max_queued_events
  • 017 fs.epoll.max_user_watches
  • 018 fs.suid_dumpable
  • 019 fs.binfmt_misc.status
  • 020 fs.quota.lookups
  • 021 fs.quota.drops
  • 022 fs.quota.reads
  • 023 fs.quota.writes
  • 024 fs.quota.cache_hits
  • 025 fs.quota.allocated_dquots
  • 026 fs.quota.free_dquots
  • 027 fs.quota.syncs
  • 028 fs.mqueue.queues_max
  • 029 fs.mqueue.msg_max
  • 030 fs.mqueue.msgsize_max

kernel

  • 001 kernel.sched_min_granularity_ns
  • 002 kernel.sched_latency_ns
  • 003 kernel.sched_wakeup_granularity_ns
  • 004 kernel.sched_shares_ratelimit
  • 005 kernel.sched_shares_thresh
  • 006 kernel.sched_child_runs_first
  • 007 kernel.sched_features
  • 008 kernel.sched_migration_cost
  • 009 kernel.sched_nr_migrate
  • 010 kernel.timer_migration
  • 011 kernel.sched_rt_period_us
  • 012 kernel.sched_rt_runtime_us
  • 013 kernel.sched_compat_yield
  • 014 kernel.panic
  • 015 kernel.exec-shield
  • 016 kernel.core_uses_pid
  • 017 kernel.core_pattern
  • 018 kernel.tainted
  • 019 kernel.latencytop
  • 020 kernel.real-root-dev
  • 021 kernel.print-fatal-signals
  • 022 kernel.ctrl-alt-del
  • 023 kernel.ftrace_enabled
  • 024 kernel.stack_tracer_enabled
  • 025 kernel.ftrace_dump_on_oops
  • 026 kernel.modprobe
  • 027 kernel.modules_disabled
  • 028 kernel.hotplug
  • 029 kernel.sg-big-buff
  • 030 kernel.acct
  • 031 kernel.sysrq
  • 032 kernel.cad_pid
  • 033 kernel.threads-max
  • 034 kernel.random.poolsize
  • 035 kernel.random.entropy_avail
  • 036 kernel.random.read_wakeup_threshold
  • 037 kernel.random.write_wakeup_threshold
  • 038 kernel.random.boot_id
  • 039 kernel.random.uuid
  • 040 kernel.overflowuid
  • 041 kernel.overflowgid
  • 042 kernel.pid_max
  • 043 kernel.panic_on_oops
  • 044 kernel.printk
  • 045 kernel.printk_ratelimit
  • 046 kernel.printk_ratelimit_burst
  • 047 kernel.ngroups_max
  • 048 kernel.unknown_nmi_panic
  • 049 kernel.nmi_watchdog
  • 050 kernel.panic_on_unrecovered_nmi
  • 051 kernel.panic_on_io_nmi
  • 052 kernel.bootloader_type
  • 053 kernel.bootloader_version
  • 054 kernel.kstack_depth_to_print
  • 055 kernel.io_delay_type
  • 056 kernel.randomize_va_space
  • 057 kernel.acpi_video_flags
  • 058 kernel.softlockup_panic
  • 059 kernel.softlockup_thresh
  • 060 kernel.hung_task_panic
  • 061 kernel.hung_task_check_count
  • 062 kernel.hung_task_timeout_secs
  • 063 kernel.hung_task_warnings
  • 064 kernel.max_lock_depth
  • 065 kernel.poweroff_cmd
  • 066 kernel.keys.maxkeys
  • 067 kernel.keys.maxbytes
  • 068 kernel.keys.root_maxkeys
  • 069 kernel.keys.root_maxbytes
  • 070 kernel.slow-work.min-threads
  • 071 kernel.slow-work.max-threads
  • 072 kernel.slow-work.vslow-percentage
  • 073 kernel.perf_counter_paranoid
  • 074 kernel.perf_counter_mlock_kb
  • 075 kernel.perf_counter_max_sample_rate
  • 076 kernel.ostype
  • 077 kernel.osrelease
  • 078 kernel.version
  • 079 kernel.hostname
  • 080 kernel.domainname
  • 081 kernel.shmmax
  • 082 kernel.shmall
  • 083 kernel.shmmni
  • 084 kernel.msgmax
  • 085 kernel.msgmni
  • 086 kernel.msgmnb
  • 087 kernel.sem
  • 088 kernel.auto_msgmni
  • 089 kernel.pty.max
  • 090 kernel.pty.nr
  • 091 kernel.sched_domain.cpu0.domain0.min_interval
  • 092 kernel.sched_domain.cpu0.domain0.max_interval
  • 093 kernel.sched_domain.cpu0.domain0.busy_idx
  • 094 kernel.sched_domain.cpu0.domain0.idle_idx
  • 095 kernel.sched_domain.cpu0.domain0.newidle_idx
  • 096 kernel.sched_domain.cpu0.domain0.wake_idx
  • 097 kernel.sched_domain.cpu0.domain0.forkexec_idx
  • 098 kernel.sched_domain.cpu0.domain0.busy_factor
  • 099 kernel.sched_domain.cpu0.domain0.imbalance_pct
  • 100 kernel.sched_domain.cpu0.domain0.cache_nice_tries
  • 101 kernel.sched_domain.cpu0.domain0.flags
  • 102 kernel.sched_domain.cpu0.domain0.name
  • 103 kernel.sched_domain.cpu1.domain0.min_interval
  • 104 kernel.sched_domain.cpu1.domain0.max_interval
  • 105 kernel.sched_domain.cpu1.domain0.busy_idx
  • 106 kernel.sched_domain.cpu1.domain0.idle_idx
  • 107 kernel.sched_domain.cpu1.domain0.newidle_idx
  • 108 kernel.sched_domain.cpu1.domain0.wake_idx
  • 109 kernel.sched_domain.cpu1.domain0.forkexec_idx
  • 110 kernel.sched_domain.cpu1.domain0.busy_factor
  • 111 kernel.sched_domain.cpu1.domain0.imbalance_pct
  • 112 kernel.sched_domain.cpu1.domain0.cache_nice_tries
  • 113 kernel.sched_domain.cpu1.domain0.flags
  • 114 kernel.sched_domain.cpu1.domain0.name

net

  • 001 net.netfilter.nf_log.0
  • 002 net.netfilter.nf_log.1
  • 003 net.netfilter.nf_log.2
  • 004 net.netfilter.nf_log.3
  • 005 net.netfilter.nf_log.4
  • 006 net.netfilter.nf_log.5
  • 007 net.netfilter.nf_log.6
  • 008 net.netfilter.nf_log.7
  • 009 net.netfilter.nf_log.8
  • 010 net.netfilter.nf_log.9
  • 011 net.netfilter.nf_log.10
  • 012 net.netfilter.nf_log.11
  • 013 net.netfilter.nf_log.12
  • 014 net.netfilter.nf_conntrack_generic_timeout
  • 015 net.netfilter.nf_conntrack_tcp_timeout_syn_sent
  • 016 net.netfilter.nf_conntrack_tcp_timeout_syn_recv
  • 017 net.netfilter.nf_conntrack_tcp_timeout_established
  • 018 net.netfilter.nf_conntrack_tcp_timeout_fin_wait
  • 019 net.netfilter.nf_conntrack_tcp_timeout_close_wait
  • 020 net.netfilter.nf_conntrack_tcp_timeout_last_ack
  • 021 net.netfilter.nf_conntrack_tcp_timeout_time_wait
  • 022 net.netfilter.nf_conntrack_tcp_timeout_close
  • 023 net.netfilter.nf_conntrack_tcp_timeout_max_retrans
  • 024 net.netfilter.nf_conntrack_tcp_timeout_unacknowledged
  • 025 net.netfilter.nf_conntrack_tcp_loose
  • 026 net.netfilter.nf_conntrack_tcp_be_liberal
  • 027 net.netfilter.nf_conntrack_tcp_max_retrans
  • 028 net.netfilter.nf_conntrack_udp_timeout
  • 029 net.netfilter.nf_conntrack_udp_timeout_stream
  • 030 net.netfilter.nf_conntrack_icmp_timeout
  • 031 net.netfilter.nf_conntrack_icmpv6_timeout
  • 032 net.netfilter.nf_conntrack_frag6_timeout
  • 033 net.netfilter.nf_conntrack_frag6_low_thresh
  • 034 net.netfilter.nf_conntrack_frag6_high_thresh
  • 035 net.netfilter.nf_conntrack_acct
  • 036 net.netfilter.nf_conntrack_events
  • 037 net.netfilter.nf_conntrack_events_retry_timeout
  • 038 net.netfilter.nf_conntrack_max
  • 039 net.netfilter.nf_conntrack_count
  • 040 net.netfilter.nf_conntrack_buckets
  • 041 net.netfilter.nf_conntrack_checksum
  • 042 net.netfilter.nf_conntrack_log_invalid
  • 043 net.netfilter.nf_conntrack_expect_max
  • 044 net.core.somaxconn
  • 045 net.core.xfrm_aevent_etime
  • 046 net.core.xfrm_aevent_rseqth
  • 047 net.core.xfrm_larval_drop
  • 048 net.core.xfrm_acq_expires
  • 049 net.core.wmem_max
  • 050 net.core.rmem_max
  • 051 net.core.wmem_default
  • 052 net.core.rmem_default
  • 053 net.core.dev_weight
  • 054 net.core.netdev_max_backlog
  • 055 net.core.message_cost
  • 056 net.core.message_burst
  • 057 net.core.optmem_max
  • 058 net.core.netdev_budget
  • 059 net.core.warnings
  • 060 net.ipv4.route.gc_thresh
  • 061 net.ipv4.route.max_size
  • 062 net.ipv4.route.gc_min_interval
  • 063 net.ipv4.route.gc_min_interval_ms
  • 064 net.ipv4.route.gc_timeout
  • 065 net.ipv4.route.gc_interval
  • 066 net.ipv4.route.redirect_load
  • 067 net.ipv4.route.redirect_number
  • 068 net.ipv4.route.redirect_silence
  • 069 net.ipv4.route.error_cost
  • 070 net.ipv4.route.error_burst
  • 071 net.ipv4.route.gc_elasticity
  • 072 net.ipv4.route.mtu_expires
  • 073 net.ipv4.route.min_pmtu
  • 074 net.ipv4.route.min_adv_mss
  • 075 net.ipv4.route.secret_interval
  • 076 net.ipv4.neigh.default.mcast_solicit
  • 077 net.ipv4.neigh.default.ucast_solicit
  • 078 net.ipv4.neigh.default.app_solicit
  • 079 net.ipv4.neigh.default.retrans_time
  • 080 net.ipv4.neigh.default.base_reachable_time
  • 081 net.ipv4.neigh.default.delay_first_probe_time
  • 082 net.ipv4.neigh.default.gc_stale_time
  • 083 net.ipv4.neigh.default.unres_qlen
  • 084 net.ipv4.neigh.default.proxy_qlen
  • 085 net.ipv4.neigh.default.anycast_delay
  • 086 net.ipv4.neigh.default.proxy_delay
  • 087 net.ipv4.neigh.default.locktime
  • 088 net.ipv4.neigh.default.retrans_time_ms
  • 089 net.ipv4.neigh.default.base_reachable_time_ms
  • 090 net.ipv4.neigh.default.gc_interval
  • 091 net.ipv4.neigh.default.gc_thresh1
  • 092 net.ipv4.neigh.default.gc_thresh2
  • 093 net.ipv4.neigh.default.gc_thresh3
  • 094 net.ipv4.neigh.lo.mcast_solicit
  • 095 net.ipv4.neigh.lo.ucast_solicit
  • 096 net.ipv4.neigh.lo.app_solicit
  • 097 net.ipv4.neigh.lo.retrans_time
  • 098 net.ipv4.neigh.lo.base_reachable_time
  • 099 net.ipv4.neigh.lo.delay_first_probe_time
  • 100 net.ipv4.neigh.lo.gc_stale_time
  • 101 net.ipv4.neigh.lo.unres_qlen
  • 102 net.ipv4.neigh.lo.proxy_qlen
  • 103 net.ipv4.neigh.lo.anycast_delay
  • 104 net.ipv4.neigh.lo.proxy_delay
  • 105 net.ipv4.neigh.lo.locktime
  • 106 net.ipv4.neigh.lo.retrans_time_ms
  • 107 net.ipv4.neigh.lo.base_reachable_time_ms
  • 108 net.ipv4.neigh.eth0.mcast_solicit
  • 109 net.ipv4.neigh.eth0.ucast_solicit
  • 110 net.ipv4.neigh.eth0.app_solicit
  • 111 net.ipv4.neigh.eth0.retrans_time
  • 112 net.ipv4.neigh.eth0.base_reachable_time
  • 113 net.ipv4.neigh.eth0.delay_first_probe_time
  • 114 net.ipv4.neigh.eth0.gc_stale_time
  • 115 net.ipv4.neigh.eth0.unres_qlen
  • 116 net.ipv4.neigh.eth0.proxy_qlen
  • 117 net.ipv4.neigh.eth0.anycast_delay
  • 118 net.ipv4.neigh.eth0.proxy_delay
  • 119 net.ipv4.neigh.eth0.locktime
  • 120 net.ipv4.neigh.eth0.retrans_time_ms
  • 121 net.ipv4.neigh.eth0.base_reachable_time_ms
  • 122 net.ipv4.tcp_timestamps
  • 123 net.ipv4.tcp_window_scaling
  • 124 net.ipv4.tcp_sack
  • 125 net.ipv4.tcp_retrans_collapse
  • 126 net.ipv4.ip_default_ttl
  • 127 net.ipv4.ip_no_pmtu_disc
  • 128 net.ipv4.ip_nonlocal_bind
  • 129 net.ipv4.tcp_syn_retries
  • 130 net.ipv4.tcp_synack_retries
  • 131 net.ipv4.tcp_max_orphans
  • 132 net.ipv4.tcp_max_tw_buckets
  • 133 net.ipv4.ip_dynaddr
  • 134 net.ipv4.tcp_keepalive_time
  • 135 net.ipv4.tcp_keepalive_probes
  • 136 net.ipv4.tcp_keepalive_intvl
  • 137 net.ipv4.tcp_retries1
  • 138 net.ipv4.tcp_retries2
  • 139 net.ipv4.tcp_fin_timeout
  • 140 net.ipv4.tcp_syncookies
  • 141 net.ipv4.tcp_tw_recycle
  • 142 net.ipv4.tcp_abort_on_overflow
  • 143 net.ipv4.tcp_stdurg
  • 144 net.ipv4.tcp_rfc1337
  • 145 net.ipv4.tcp_max_syn_backlog
  • 146 net.ipv4.ip_local_port_range
  • 147 net.ipv4.igmp_max_memberships
  • 148 net.ipv4.igmp_max_msf
  • 149 net.ipv4.inet_peer_threshold
  • 150 net.ipv4.inet_peer_minttl
  • 151 net.ipv4.inet_peer_maxttl
  • 152 net.ipv4.inet_peer_gc_mintime
  • 153 net.ipv4.inet_peer_gc_maxtime
  • 154 net.ipv4.tcp_orphan_retries
  • 155 net.ipv4.tcp_fack
  • 156 net.ipv4.tcp_reordering
  • 157 net.ipv4.tcp_ecn
  • 158 net.ipv4.tcp_dsack
  • 159 net.ipv4.tcp_mem
  • 160 net.ipv4.tcp_wmem
  • 161 net.ipv4.tcp_rmem
  • 162 net.ipv4.tcp_app_win
  • 163 net.ipv4.tcp_adv_win_scale
  • 164 net.ipv4.tcp_tw_reuse
  • 165 net.ipv4.tcp_frto
  • 166 net.ipv4.tcp_frto_response
  • 167 net.ipv4.tcp_low_latency
  • 168 net.ipv4.tcp_no_metrics_save
  • 169 net.ipv4.tcp_moderate_rcvbuf
  • 170 net.ipv4.tcp_tso_win_divisor
  • 171 net.ipv4.tcp_congestion_control
  • 172 net.ipv4.tcp_abc
  • 173 net.ipv4.tcp_mtu_probing
  • 174 net.ipv4.tcp_base_mss
  • 175 net.ipv4.tcp_workaround_signed_windows
  • 176 net.ipv4.tcp_dma_copybreak
  • 177 net.ipv4.tcp_slow_start_after_idle
  • 178 net.ipv4.cipso_cache_enable
  • 179 net.ipv4.cipso_cache_bucket_size
  • 180 net.ipv4.cipso_rbm_optfmt
  • 181 net.ipv4.cipso_rbm_strictvalid
  • 182 net.ipv4.tcp_available_congestion_control
  • 183 net.ipv4.tcp_allowed_congestion_control
  • 184 net.ipv4.tcp_max_ssthresh
  • 185 net.ipv4.udp_mem
  • 186 net.ipv4.udp_rmem_min
  • 187 net.ipv4.udp_wmem_min
  • 188 net.ipv4.conf.all.forwarding
  • 189 net.ipv4.conf.all.mc_forwarding
  • 190 net.ipv4.conf.all.accept_redirects
  • 191 net.ipv4.conf.all.secure_redirects
  • 192 net.ipv4.conf.all.shared_media
  • 193 net.ipv4.conf.all.rp_filter
  • 194 net.ipv4.conf.all.send_redirects
  • 195 net.ipv4.conf.all.accept_source_route
  • 196 net.ipv4.conf.all.proxy_arp
  • 197 net.ipv4.conf.all.medium_id
  • 198 net.ipv4.conf.all.bootp_relay
  • 199 net.ipv4.conf.all.log_martians
  • 200 net.ipv4.conf.all.tag
  • 201 net.ipv4.conf.all.arp_filter
  • 202 net.ipv4.conf.all.arp_announce
  • 203 net.ipv4.conf.all.arp_ignore
  • 204 net.ipv4.conf.all.arp_accept
  • 205 net.ipv4.conf.all.arp_notify
  • 206 net.ipv4.conf.all.disable_xfrm
  • 207 net.ipv4.conf.all.disable_policy
  • 208 net.ipv4.conf.all.force_igmp_version
  • 209 net.ipv4.conf.all.promote_secondaries
  • 210 net.ipv4.conf.default.forwarding
  • 211 net.ipv4.conf.default.mc_forwarding
  • 212 net.ipv4.conf.default.accept_redirects
  • 213 net.ipv4.conf.default.secure_redirects
  • 214 net.ipv4.conf.default.shared_media
  • 215 net.ipv4.conf.default.rp_filter
  • 216 net.ipv4.conf.default.send_redirects
  • 217 net.ipv4.conf.default.accept_source_route
  • 218 net.ipv4.conf.default.proxy_arp
  • 219 net.ipv4.conf.default.medium_id
  • 220 net.ipv4.conf.default.bootp_relay
  • 221 net.ipv4.conf.default.log_martians
  • 222 net.ipv4.conf.default.tag
  • 223 net.ipv4.conf.default.arp_filter
  • 224 net.ipv4.conf.default.arp_announce
  • 225 net.ipv4.conf.default.arp_ignore
  • 226 net.ipv4.conf.default.arp_accept
  • 227 net.ipv4.conf.default.arp_notify
  • 228 net.ipv4.conf.default.disable_xfrm
  • 229 net.ipv4.conf.default.disable_policy
  • 230 net.ipv4.conf.default.force_igmp_version
  • 231 net.ipv4.conf.default.promote_secondaries
  • 232 net.ipv4.conf.lo.forwarding
  • 233 net.ipv4.conf.lo.mc_forwarding
  • 234 net.ipv4.conf.lo.accept_redirects
  • 235 net.ipv4.conf.lo.secure_redirects
  • 236 net.ipv4.conf.lo.shared_media
  • 237 net.ipv4.conf.lo.rp_filter
  • 238 net.ipv4.conf.lo.send_redirects
  • 239 net.ipv4.conf.lo.accept_source_route
  • 240 net.ipv4.conf.lo.proxy_arp
  • 241 net.ipv4.conf.lo.medium_id
  • 242 net.ipv4.conf.lo.bootp_relay
  • 243 net.ipv4.conf.lo.log_martians
  • 244 net.ipv4.conf.lo.tag
  • 245 net.ipv4.conf.lo.arp_filter
  • 246 net.ipv4.conf.lo.arp_announce
  • 247 net.ipv4.conf.lo.arp_ignore
  • 248 net.ipv4.conf.lo.arp_accept
  • 249 net.ipv4.conf.lo.arp_notify
  • 250 net.ipv4.conf.lo.disable_xfrm
  • 251 net.ipv4.conf.lo.disable_policy
  • 252 net.ipv4.conf.lo.force_igmp_version
  • 253 net.ipv4.conf.lo.promote_secondaries
  • 254 net.ipv4.conf.eth0.forwarding
  • 255 net.ipv4.conf.eth0.mc_forwarding
  • 256 net.ipv4.conf.eth0.accept_redirects
  • 257 net.ipv4.conf.eth0.secure_redirects
  • 258 net.ipv4.conf.eth0.shared_media
  • 259 net.ipv4.conf.eth0.rp_filter
  • 260 net.ipv4.conf.eth0.send_redirects
  • 261 net.ipv4.conf.eth0.accept_source_route
  • 262 net.ipv4.conf.eth0.proxy_arp
  • 263 net.ipv4.conf.eth0.medium_id
  • 264 net.ipv4.conf.eth0.bootp_relay
  • 265 net.ipv4.conf.eth0.log_martians
  • 266 net.ipv4.conf.eth0.tag
  • 267 net.ipv4.conf.eth0.arp_filter
  • 268 net.ipv4.conf.eth0.arp_announce
  • 269 net.ipv4.conf.eth0.arp_ignore
  • 270 net.ipv4.conf.eth0.arp_accept
  • 271 net.ipv4.conf.eth0.arp_notify
  • 272 net.ipv4.conf.eth0.disable_xfrm
  • 273 net.ipv4.conf.eth0.disable_policy
  • 274 net.ipv4.conf.eth0.force_igmp_version
  • 275 net.ipv4.conf.eth0.promote_secondaries
  • 276 net.ipv4.ip_forward
  • 277 net.ipv4.ipfrag_high_thresh
  • 278 net.ipv4.ipfrag_low_thresh
  • 279 net.ipv4.ipfrag_time
  • 280 net.ipv4.icmp_echo_ignore_all
  • 281 net.ipv4.icmp_echo_ignore_broadcasts
  • 282 net.ipv4.icmp_ignore_bogus_error_responses
  • 283 net.ipv4.icmp_errors_use_inbound_ifaddr
  • 284 net.ipv4.icmp_ratelimit
  • 285 net.ipv4.icmp_ratemask
  • 286 net.ipv4.rt_cache_rebuild_count
  • 287 net.ipv4.ipfrag_secret_interval
  • 288 net.ipv4.ipfrag_max_dist
  • 289 net.nf_conntrack_max
  • 290 net.ipv6.neigh.default.mcast_solicit
  • 291 net.ipv6.neigh.default.ucast_solicit
  • 292 net.ipv6.neigh.default.app_solicit
  • 293 net.ipv6.neigh.default.delay_first_probe_time
  • 294 net.ipv6.neigh.default.gc_stale_time
  • 295 net.ipv6.neigh.default.unres_qlen
  • 296 net.ipv6.neigh.default.proxy_qlen
  • 297 net.ipv6.neigh.default.anycast_delay
  • 298 net.ipv6.neigh.default.proxy_delay
  • 299 net.ipv6.neigh.default.locktime
  • 300 net.ipv6.neigh.default.retrans_time_ms
  • 301 net.ipv6.neigh.default.base_reachable_time_ms
  • 302 net.ipv6.neigh.default.gc_interval
  • 303 net.ipv6.neigh.default.gc_thresh1
  • 304 net.ipv6.neigh.default.gc_thresh2
  • 305 net.ipv6.neigh.default.gc_thresh3
  • 306 net.ipv6.neigh.lo.mcast_solicit
  • 307 net.ipv6.neigh.lo.ucast_solicit
  • 308 net.ipv6.neigh.lo.app_solicit
  • 309 net.ipv6.neigh.lo.delay_first_probe_time
  • 310 net.ipv6.neigh.lo.gc_stale_time
  • 311 net.ipv6.neigh.lo.unres_qlen
  • 312 net.ipv6.neigh.lo.proxy_qlen
  • 313 net.ipv6.neigh.lo.anycast_delay
  • 314 net.ipv6.neigh.lo.proxy_delay
  • 315 net.ipv6.neigh.lo.locktime
  • 316 net.ipv6.neigh.lo.retrans_time_ms
  • 317 net.ipv6.neigh.lo.base_reachable_time_ms
  • 318 net.ipv6.neigh.eth0.mcast_solicit
  • 319 net.ipv6.neigh.eth0.ucast_solicit
  • 320 net.ipv6.neigh.eth0.app_solicit
  • 321 net.ipv6.neigh.eth0.delay_first_probe_time
  • 322 net.ipv6.neigh.eth0.gc_stale_time
  • 323 net.ipv6.neigh.eth0.unres_qlen
  • 324 net.ipv6.neigh.eth0.proxy_qlen
  • 325 net.ipv6.neigh.eth0.anycast_delay
  • 326 net.ipv6.neigh.eth0.proxy_delay
  • 327 net.ipv6.neigh.eth0.locktime
  • 328 net.ipv6.neigh.eth0.retrans_time_ms
  • 329 net.ipv6.neigh.eth0.base_reachable_time_ms
  • 330 net.ipv6.conf.all.forwarding
  • 331 net.ipv6.conf.all.hop_limit
  • 332 net.ipv6.conf.all.mtu
  • 333 net.ipv6.conf.all.accept_ra
  • 334 net.ipv6.conf.all.accept_redirects
  • 335 net.ipv6.conf.all.autoconf
  • 336 net.ipv6.conf.all.dad_transmits
  • 337 net.ipv6.conf.all.router_solicitations
  • 338 net.ipv6.conf.all.router_solicitation_interval
  • 339 net.ipv6.conf.all.router_solicitation_delay
  • 340 net.ipv6.conf.all.force_mld_version
  • 341 net.ipv6.conf.all.use_tempaddr
  • 342 net.ipv6.conf.all.temp_valid_lft
  • 343 net.ipv6.conf.all.temp_prefered_lft
  • 344 net.ipv6.conf.all.regen_max_retry
  • 345 net.ipv6.conf.all.max_desync_factor
  • 346 net.ipv6.conf.all.max_addresses
  • 347 net.ipv6.conf.all.accept_ra_defrtr
  • 348 net.ipv6.conf.all.accept_ra_pinfo
  • 349 net.ipv6.conf.all.accept_ra_rtr_pref
  • 350 net.ipv6.conf.all.router_probe_interval
  • 351 net.ipv6.conf.all.accept_ra_rt_info_max_plen
  • 352 net.ipv6.conf.all.proxy_ndp
  • 353 net.ipv6.conf.all.accept_source_route
  • 354 net.ipv6.conf.all.optimistic_dad
  • 355 net.ipv6.conf.all.mc_forwarding
  • 356 net.ipv6.conf.all.disable_ipv6
  • 357 net.ipv6.conf.all.accept_dad
  • 358 net.ipv6.conf.default.forwarding
  • 359 net.ipv6.conf.default.hop_limit
  • 360 net.ipv6.conf.default.mtu
  • 361 net.ipv6.conf.default.accept_ra
  • 362 net.ipv6.conf.default.accept_redirects
  • 363 net.ipv6.conf.default.autoconf
  • 364 net.ipv6.conf.default.dad_transmits
  • 365 net.ipv6.conf.default.router_solicitations
  • 366 net.ipv6.conf.default.router_solicitation_interval
  • 367 net.ipv6.conf.default.router_solicitation_delay
  • 368 net.ipv6.conf.default.force_mld_version
  • 369 net.ipv6.conf.default.use_tempaddr
  • 370 net.ipv6.conf.default.temp_valid_lft
  • 371 net.ipv6.conf.default.temp_prefered_lft
  • 372 net.ipv6.conf.default.regen_max_retry
  • 373 net.ipv6.conf.default.max_desync_factor
  • 374 net.ipv6.conf.default.max_addresses
  • 375 net.ipv6.conf.default.accept_ra_defrtr
  • 376 net.ipv6.conf.default.accept_ra_pinfo
  • 377 net.ipv6.conf.default.accept_ra_rtr_pref
  • 378 net.ipv6.conf.default.router_probe_interval
  • 379 net.ipv6.conf.default.accept_ra_rt_info_max_plen
  • 380 net.ipv6.conf.default.proxy_ndp
  • 381 net.ipv6.conf.default.accept_source_route
  • 382 net.ipv6.conf.default.optimistic_dad
  • 383 net.ipv6.conf.default.mc_forwarding
  • 384 net.ipv6.conf.default.disable_ipv6
  • 385 net.ipv6.conf.default.accept_dad
  • 386 net.ipv6.conf.lo.forwarding
  • 387 net.ipv6.conf.lo.hop_limit
  • 388 net.ipv6.conf.lo.mtu
  • 389 net.ipv6.conf.lo.accept_ra
  • 390 net.ipv6.conf.lo.accept_redirects
  • 391 net.ipv6.conf.lo.autoconf
  • 392 net.ipv6.conf.lo.dad_transmits
  • 393 net.ipv6.conf.lo.router_solicitations
  • 394 net.ipv6.conf.lo.router_solicitation_interval
  • 395 net.ipv6.conf.lo.router_solicitation_delay
  • 396 net.ipv6.conf.lo.force_mld_version
  • 397 net.ipv6.conf.lo.use_tempaddr
  • 398 net.ipv6.conf.lo.temp_valid_lft
  • 399 net.ipv6.conf.lo.temp_prefered_lft
  • 400 net.ipv6.conf.lo.regen_max_retry
  • 401 net.ipv6.conf.lo.max_desync_factor
  • 402 net.ipv6.conf.lo.max_addresses
  • 403 net.ipv6.conf.lo.accept_ra_defrtr
  • 404 net.ipv6.conf.lo.accept_ra_pinfo
  • 405 net.ipv6.conf.lo.accept_ra_rtr_pref
  • 406 net.ipv6.conf.lo.router_probe_interval
  • 407 net.ipv6.conf.lo.accept_ra_rt_info_max_plen
  • 408 net.ipv6.conf.lo.proxy_ndp
  • 409 net.ipv6.conf.lo.accept_source_route
  • 410 net.ipv6.conf.lo.optimistic_dad
  • 411 net.ipv6.conf.lo.mc_forwarding
  • 412 net.ipv6.conf.lo.disable_ipv6
  • 413 net.ipv6.conf.lo.accept_dad
  • 414 net.ipv6.conf.eth0.forwarding
  • 415 net.ipv6.conf.eth0.hop_limit
  • 416 net.ipv6.conf.eth0.mtu
  • 417 net.ipv6.conf.eth0.accept_ra
  • 418 net.ipv6.conf.eth0.accept_redirects
  • 419 net.ipv6.conf.eth0.autoconf
  • 420 net.ipv6.conf.eth0.dad_transmits
  • 421 net.ipv6.conf.eth0.router_solicitations
  • 422 net.ipv6.conf.eth0.router_solicitation_interval
  • 423 net.ipv6.conf.eth0.router_solicitation_delay
  • 424 net.ipv6.conf.eth0.force_mld_version
  • 425 net.ipv6.conf.eth0.use_tempaddr
  • 426 net.ipv6.conf.eth0.temp_valid_lft
  • 427 net.ipv6.conf.eth0.temp_prefered_lft
  • 428 net.ipv6.conf.eth0.regen_max_retry
  • 429 net.ipv6.conf.eth0.max_desync_factor
  • 430 net.ipv6.conf.eth0.max_addresses
  • 431 net.ipv6.conf.eth0.accept_ra_defrtr
  • 432 net.ipv6.conf.eth0.accept_ra_pinfo
  • 433 net.ipv6.conf.eth0.accept_ra_rtr_pref
  • 434 net.ipv6.conf.eth0.router_probe_interval
  • 435 net.ipv6.conf.eth0.accept_ra_rt_info_max_plen
  • 436 net.ipv6.conf.eth0.proxy_ndp
  • 437 net.ipv6.conf.eth0.accept_source_route
  • 438 net.ipv6.conf.eth0.optimistic_dad
  • 439 net.ipv6.conf.eth0.mc_forwarding
  • 440 net.ipv6.conf.eth0.disable_ipv6
  • 441 net.ipv6.conf.eth0.accept_dad
  • 442 net.ipv6.ip6frag_high_thresh
  • 443 net.ipv6.ip6frag_low_thresh
  • 444 net.ipv6.ip6frag_time
  • 445 net.ipv6.route.gc_thresh
  • 446 net.ipv6.route.max_size
  • 447 net.ipv6.route.gc_min_interval
  • 448 net.ipv6.route.gc_timeout
  • 449 net.ipv6.route.gc_interval
  • 450 net.ipv6.route.gc_elasticity
  • 451 net.ipv6.route.mtu_expires
  • 452 net.ipv6.route.min_adv_mss
  • 453 net.ipv6.route.gc_min_interval_ms
  • 454 net.ipv6.icmp.ratelimit
  • 455 net.ipv6.bindv6only
  • 456 net.ipv6.ip6frag_secret_interval
  • 457 net.ipv6.mld_max_msf
  • 458 net.unix.max_dgram_qlen

sunrpc

  • 001 sunrpc.rpc_debug
  • 002 sunrpc.nfs_debug
  • 003 sunrpc.nfsd_debug
  • 004 sunrpc.nlm_debug
  • 005 sunrpc.transports
  • 006 sunrpc.udp_slot_table_entries
  • 007 sunrpc.tcp_slot_table_entries
  • 008 sunrpc.min_resvport
  • 009 sunrpc.max_resvport
  • 010 sunrpc.tcp_fin_timeout

vm

  • 001 vm.overcommit_memory
  • 002 vm.panic_on_oom
  • 003 vm.oom_kill_allocating_task
  • 004 vm.oom_dump_tasks
  • 005 vm.would_have_oomkilled
  • 006 vm.overcommit_ratio
  • 007 vm.page-cluster
  • 008 vm.dirty_background_ratio
  • 009 vm.dirty_background_bytes
  • 010 vm.dirty_ratio
  • 011 vm.dirty_bytes
  • 012 vm.dirty_writeback_centisecs
  • 013 vm.dirty_expire_centisecs
  • 014 vm.nr_pdflush_threads
  • 015 vm.swappiness
  • 016 vm.nr_hugepages
  • 017 vm.hugetlb_shm_group
  • 018 vm.hugepages_treat_as_movable
  • 019 vm.nr_overcommit_hugepages
  • 020 vm.lowmem_reserve_ratio
  • 021 vm.drop_caches
  • 022 vm.min_free_kbytes
  • 023 vm.percpu_pagelist_fraction
  • 024 vm.max_map_count
  • 025 vm.laptop_mode
  • 026 vm.block_dump
  • 027 vm.vfs_cache_pressure
  • 028 vm.legacy_va_layout
  • 029 vm.stat_interval
  • 030 vm.mmap_min_addr
  • 031 vm.vdso_enabled
  • 032 vm.highmem_is_dirtyable
  • 033 vm.scan_unevictable_pages

  • 最終更新:2009-12-08 23:45:02

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