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jult/sysctl.conf

Last active June 17, 2025 13:38
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  1. jult revised this gist Feb 24, 2025. 1 changed file with 2 additions and 1 deletion.
    3 changes: 2 additions & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -1,5 +1,6 @@
    # IPv6 Configuration
    # (note that I have disabled ip6 for our internet-connection (wan/eth0), since my upstream/ISP (still) does not do IPv6
    # -> note that I have disabled ip6 for our internet-connection (wan/eth0) because
    # -> my upstream/ISP (still) does not do IPv6. The rest, even localhost, does ip6 stuff.
    net.ipv6.conf.all.disable_ipv6 = 0
    net.ipv6.conf.default.disable_ipv6 = 0
    net.ipv6.conf.lo.disable_ipv6 = 0
  2. jult revised this gist Feb 24, 2025. 1 changed file with 69 additions and 55 deletions.
    124 changes: 69 additions & 55 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -1,67 +1,81 @@
    kernel.core_uses_pid = 1
    kernel.domainname = your_local_domain_name
    kernel.msgmax = 65535
    kernel.msgmnb = 65535
    kernel.pid_max = 65535
    kernel.printk = 2 3 1 2
    kernel.randomize_va_space = 2
    kernel.shmall = 268435456
    kernel.shmmax = 268435456
    kernel.sysrq = 0

    fs.inotify.max_user_watches = 524288
    fs.file-max = 2097152
    net.core.default_qdisc = fq_codel
    net.core.netdev_max_backlog = 16384
    net.core.rmem_default = 33554432
    net.core.rmem_max = 67108864
    net.core.wmem_max = 67108864
    net.core.wmem_default = 33554432

    net.core.somaxconn = 4096
    net.core.netdev_max_backlog = 65536
    net.core.optmem_max = 25165824
    # IPv6 Configuration
    # (note that I have disabled ip6 for our internet-connection (wan/eth0), since my upstream/ISP (still) does not do IPv6
    net.ipv6.conf.all.disable_ipv6 = 0
    net.ipv6.conf.default.disable_ipv6 = 0
    net.ipv6.conf.lo.disable_ipv6 = 0
    net.ipv6.conf.eth0.disable_ipv6 = 1
    net.ipv6.conf.wan.disable_ipv6 = 1

    net.ipv4.tcp_rmem = 4096 87380 33554432
    net.ipv4.tcp_wmem = 4096 65536 33554432
    # Packet Forwarding
    net.ipv4.ip_forward = 1

    # Security Settings
    net.ipv4.conf.all.accept_redirects = 0
    net.ipv4.conf.all.accept_source_route = 0
    net.ipv4.conf.all.rp_filter = 2
    net.ipv4.conf.all.secure_redirects = 0
    net.ipv4.conf.all.send_redirects = 0
    net.ipv4.conf.default.accept_redirects = 0
    net.ipv4.conf.all.accept_source_route = 0
    net.ipv4.conf.default.accept_source_route = 0
    net.ipv4.conf.default.rp_filter = 2
    net.ipv4.conf.default.secure_redirects = 0
    net.ipv4.conf.all.send_redirects = 0
    net.ipv4.conf.default.send_redirects = 0
    net.ipv4.ip_forward = 1

    # Connection Tracking
    net.netfilter.nf_conntrack_max = 1048576
    net.netfilter.nf_conntrack_buckets = 262144
    net.netfilter.nf_conntrack_tcp_timeout_established = 86400
    net.netfilter.nf_conntrack_tcp_timeout_time_wait = 30

    # Socket Buffer Sizes
    net.core.rmem_max = 67108864
    net.core.wmem_max = 67108864
    net.ipv4.tcp_rmem = 4096 87380 67108864
    net.ipv4.tcp_wmem = 4096 65536 67108864
    net.core.rmem_default = 524288
    net.core.wmem_default = 524288

    # Backlog and Queuing
    net.core.netdev_max_backlog = 60000
    net.core.netdev_budget = 120000
    net.core.netdev_budget_usecs = 48000
    net.core.optmem_max = 8388608
    net.core.default_qdisc = fq_codel

    # TCP Settings
    net.ipv4.tcp_congestion_control = bbr
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_intvl = 15
    net.ipv4.tcp_keepalive_probes = 5
    net.ipv4.tcp_keepalive_time = 300
    net.ipv4.tcp_max_syn_backlog = 4096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_fastopen = 3
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_fin_timeout = 5
    net.ipv4.tcp_max_syn_backlog = 16384
    net.ipv4.tcp_mtu_probing = 1
    net.ipv4.tcp_notsent_lowat = 16384
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_syn_retries = 2
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_timestamps=0
    net.ipv4.tcp_sack=1
    net.ipv4.tcp_low_latency=1
    net.ipv4.tcp_adv_win_scale=1
    net.ipv4.tcp_retries2 = 5
    net.ipv4.tcp_timestamps = 0
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_low_latency = 1
    net.ipv4.tcp_adv_win_scale = 1

    # Memory Settings
    vm.min_free_kbytes = 524288
    vm.swappiness = 0
    vm.dirty_background_ratio = 5
    vm.dirty_ratio = 10
    vm.dirty_expire_centisecs = 3000
    vm.dirty_writeback_centisecs = 500

    # File Descriptors
    fs.file-max = 2097152
    fs.nr_open = 2097152

    vm.dirty_background_ratio = 4
    vm.dirty_ratio = 5
    vm.min_free_kbytes = 65535
    vm.overcommit_memory = 1
    vm.swappiness = 1
    # Inotify Watches
    fs.inotify.max_user_watches = 1048576

    # Shared Memory Limits
    kernel.shmmax = 17179869184
    kernel.shmall = 4194304

    # Kernel Miscellaneous
    kernel.core_uses_pid = 1
    kernel.domainname = your.local.server.domain.name
    kernel.printk = 3 4 1 3
    kernel.randomize_va_space = 2
    kernel.sysrq = 0
  3. jult revised this gist Dec 28, 2023. 1 changed file with 16 additions and 22 deletions.
    38 changes: 16 additions & 22 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -11,17 +11,19 @@ kernel.sysrq = 0

    fs.inotify.max_user_watches = 524288
    fs.file-max = 2097152

    net.core.default_qdisc = fq_codel
    net.core.netdev_max_backlog = 16384
    net.core.rmem_default=4194304
    net.core.wmem_default=4194304
    net.core.optmem_max=4194304
    net.core.rmem_max=4194304
    net.core.wmem_max=4194304
    net.core.rmem_default = 33554432
    net.core.rmem_max = 67108864
    net.core.wmem_max = 67108864
    net.core.wmem_default = 33554432

    net.core.somaxconn = 4096
    net.core.netdev_max_backlog = 65536
    net.core.optmem_max = 25165824

    net.ipv4.tcp_rmem = 4096 87380 4194304
    net.ipv4.tcp_wmem = 4096 65536 4194304
    net.ipv4.tcp_rmem = 4096 87380 33554432
    net.ipv4.tcp_wmem = 4096 65536 33554432

    net.ipv4.conf.all.accept_redirects = 0
    net.ipv4.conf.all.accept_source_route = 0
    @@ -42,6 +44,7 @@ net.ipv4.tcp_keepalive_probes = 5
    net.ipv4.tcp_keepalive_time = 300
    net.ipv4.tcp_max_syn_backlog = 4096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_mtu_probing = 1
    net.ipv4.tcp_notsent_lowat = 16384
    net.ipv4.tcp_rfc1337 = 1
    @@ -50,21 +53,12 @@ net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_syn_retries = 2
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    # net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_low_latency = 1
    net.ipv4.tcp_adv_win_scale = 1

    net.ipv6.conf.all.accept_redirects = 0
    net.ipv6.conf.all.accept_source_route = 0
    net.ipv6.conf.all.forwarding = 0
    net.ipv6.conf.default.accept_redirects = 0
    net.ipv6.conf.default.accept_source_route = 0
    net.ipv6.conf.all.disable_ipv6 = 1
    net.ipv6.conf.default.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1
    net.ipv4.tcp_timestamps=0
    net.ipv4.tcp_sack=1
    net.ipv4.tcp_low_latency=1
    net.ipv4.tcp_adv_win_scale=1

    vm.dirty_background_ratio = 4
    vm.dirty_ratio = 5
  4. jult revised this gist Aug 23, 2023. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -50,7 +50,7 @@ net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_syn_retries = 2
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_timestamps = 1
    # net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_sack = 1
  5. jult revised this gist Aug 23, 2023. 1 changed file with 3 additions and 4 deletions.
    7 changes: 3 additions & 4 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -53,10 +53,9 @@ net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_timestamps=0
    net.ipv4.tcp_sack=1
    net.ipv4.tcp_low_latency=1
    net.ipv4.tcp_adv_win_scale=1
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_low_latency = 1
    net.ipv4.tcp_adv_win_scale = 1

    net.ipv6.conf.all.accept_redirects = 0
    net.ipv6.conf.all.accept_source_route = 0
  6. jult revised this gist Dec 14, 2021. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -1,5 +1,5 @@
    kernel.core_uses_pid = 1
    kernel.domainname = baytrail.stro.men
    kernel.domainname = your_local_domain_name
    kernel.msgmax = 65535
    kernel.msgmnb = 65535
    kernel.pid_max = 65535
  7. jult revised this gist Dec 14, 2021. 1 changed file with 10 additions and 7 deletions.
    17 changes: 10 additions & 7 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -1,5 +1,5 @@
    kernel.core_uses_pid = 1
    kernel.domainname = your-rdns-FQDN.here
    kernel.domainname = baytrail.stro.men
    kernel.msgmax = 65535
    kernel.msgmnb = 65535
    kernel.pid_max = 65535
    @@ -14,9 +14,11 @@ fs.file-max = 2097152

    net.core.default_qdisc = fq_codel
    net.core.netdev_max_backlog = 16384
    net.core.optmem_max = 65535
    net.core.rmem_max = 4194304
    net.core.wmem_max = 4194304
    net.core.rmem_default=4194304
    net.core.wmem_default=4194304
    net.core.optmem_max=4194304
    net.core.rmem_max=4194304
    net.core.wmem_max=4194304

    net.ipv4.tcp_rmem = 4096 87380 4194304
    net.ipv4.tcp_wmem = 4096 65536 4194304
    @@ -31,9 +33,7 @@ net.ipv4.conf.default.accept_source_route = 0
    net.ipv4.conf.default.rp_filter = 2
    net.ipv4.conf.default.secure_redirects = 0
    net.ipv4.conf.default.send_redirects = 0

    net.ipv4.ip_forward = 1
    net.ipv4.ip_local_port_range = 1024 65300

    net.ipv4.tcp_congestion_control = bbr
    net.ipv4.tcp_fin_timeout = 15
    @@ -53,6 +53,10 @@ net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_timestamps=0
    net.ipv4.tcp_sack=1
    net.ipv4.tcp_low_latency=1
    net.ipv4.tcp_adv_win_scale=1

    net.ipv6.conf.all.accept_redirects = 0
    net.ipv6.conf.all.accept_source_route = 0
    @@ -68,4 +72,3 @@ vm.dirty_ratio = 5
    vm.min_free_kbytes = 65535
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32
  8. jult revised this gist Sep 25, 2019. 1 changed file with 12 additions and 8 deletions.
    20 changes: 12 additions & 8 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -1,22 +1,25 @@
    fs.file-max = 2097152
    fs.inotify.max_user_watches = 524288

    kernel.core_uses_pid = 1
    kernel.domainname = your-rdns-FQDN.here
    kernel.msgmax = 65535
    kernel.msgmnb = 65535
    kernel.pid_max = 65535
    kernel.printk = 2 3 1 2
    kernel.randomize_va_space = 2
    kernel.sched_migration_cost_ns = 5000000
    kernel.shmall = 268435456
    kernel.shmmax = 268435456
    kernel.sysrq = 0

    fs.inotify.max_user_watches = 524288
    fs.file-max = 2097152

    net.core.default_qdisc = fq_codel
    net.core.netdev_max_backlog = 16384
    net.core.optmem_max = 65535
    net.core.rmem_max = 335544
    net.core.wmem_max = 335544
    net.core.rmem_max = 4194304
    net.core.wmem_max = 4194304

    net.ipv4.tcp_rmem = 4096 87380 4194304
    net.ipv4.tcp_wmem = 4096 65536 4194304

    net.ipv4.conf.all.accept_redirects = 0
    net.ipv4.conf.all.accept_source_route = 0
    @@ -28,8 +31,10 @@ net.ipv4.conf.default.accept_source_route = 0
    net.ipv4.conf.default.rp_filter = 2
    net.ipv4.conf.default.secure_redirects = 0
    net.ipv4.conf.default.send_redirects = 0
    net.ipv4.ip_forward = 0

    net.ipv4.ip_forward = 1
    net.ipv4.ip_local_port_range = 1024 65300

    net.ipv4.tcp_congestion_control = bbr
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_intvl = 15
    @@ -54,7 +59,6 @@ net.ipv6.conf.all.accept_source_route = 0
    net.ipv6.conf.all.forwarding = 0
    net.ipv6.conf.default.accept_redirects = 0
    net.ipv6.conf.default.accept_source_route = 0
    # if you want to disable ipv6 (for LAN use)
    net.ipv6.conf.all.disable_ipv6 = 1
    net.ipv6.conf.default.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1
  9. jult revised this gist Sep 18, 2019. 1 changed file with 50 additions and 32 deletions.
    82 changes: 50 additions & 32 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -1,49 +1,67 @@
    kernel.domainname = your-rdns-FQDN.here
    fs.file-max = 2097152
    fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    fs.inotify.max_user_watches = 524288

    # high gains for use with kernel 4.9.*+.
    net.core.default_qdisc = fq
    net.ipv4.tcp_congestion_control = bbr
    kernel.core_uses_pid = 1
    kernel.domainname = your-rdns-FQDN.here
    kernel.msgmax = 65535
    kernel.msgmnb = 65535
    kernel.pid_max = 65535
    kernel.randomize_va_space = 2
    kernel.sched_migration_cost_ns = 5000000
    kernel.shmall = 268435456
    kernel.shmmax = 268435456
    kernel.sysrq = 0

    net.core.default_qdisc = fq_codel
    net.core.netdev_max_backlog = 16384
    net.core.optmem_max = 65535
    net.core.rmem_max = 335544
    net.core.wmem_max = 335544

    net.core.netdev_budget = 8000
    net.core.netdev_max_backlog = 16000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 8388608
    net.core.rmem_max = 16777216
    net.core.somaxconn = 4096
    net.core.wmem_default = 8388608
    net.core.wmem_max = 16777216
    net.ipv4.ip_local_port_range = 2000 64035
    net.ipv4.conf.all.accept_redirects = 0
    net.ipv4.conf.all.accept_source_route = 0
    net.ipv4.conf.all.rp_filter = 2
    net.ipv4.conf.all.secure_redirects = 0
    net.ipv4.conf.all.send_redirects = 0
    net.ipv4.conf.default.accept_redirects = 0
    net.ipv4.conf.default.accept_source_route = 0
    net.ipv4.conf.default.rp_filter = 2
    net.ipv4.conf.default.secure_redirects = 0
    net.ipv4.conf.default.send_redirects = 0
    net.ipv4.ip_forward = 0
    net.ipv4.ip_local_port_range = 1024 65300
    net.ipv4.tcp_congestion_control = bbr
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_intvl = 30
    net.ipv4.tcp_keepalive_intvl = 15
    net.ipv4.tcp_keepalive_probes = 5
    net.ipv4.tcp_max_syn_backlog = 8096
    net.ipv4.tcp_keepalive_time = 300
    net.ipv4.tcp_max_syn_backlog = 4096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_mem = 65536 131072 262144
    net.ipv4.tcp_mtu_probing = 1
    net.ipv4.tcp_notsent_lowat = 16384
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.tcp_rmem = 4096 87380 16777216
    net.ipv4.tcp_sack = 1
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_syn_retries = 2
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    # deprecated; net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_timestamps = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_wmem = 4096 65536 16777216
    net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384

    # I have enough RAM thank you very much;

    vm.dirty_background_ratio = 8
    vm.dirty_ratio = 80
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32

    net.ipv6.conf.all.accept_redirects = 0
    net.ipv6.conf.all.accept_source_route = 0
    net.ipv6.conf.all.forwarding = 0
    net.ipv6.conf.default.accept_redirects = 0
    net.ipv6.conf.default.accept_source_route = 0
    # if you want to disable ipv6 (for LAN use)
    net.ipv6.conf.all.disable_ipv6 = 1
    net.ipv6.conf.default.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1

    vm.dirty_background_ratio = 4
    vm.dirty_ratio = 5
    vm.min_free_kbytes = 65535
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32
  10. jult revised this gist Feb 1, 2019. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -27,7 +27,7 @@ net.ipv4.tcp_rmem = 4096 87380 16777216
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_recycle = 1
    # deprecated; net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_wmem = 4096 65536 16777216
  11. jult revised this gist Feb 1, 2019. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -35,7 +35,7 @@ net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384

    # I have enough RAM in my NAS thank you very much;
    # I have enough RAM thank you very much;

    vm.dirty_background_ratio = 8
    vm.dirty_ratio = 80
  12. jult revised this gist Feb 1, 2019. 1 changed file with 10 additions and 4 deletions.
    14 changes: 10 additions & 4 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -2,13 +2,17 @@ kernel.domainname = your-rdns-FQDN.here
    fs.file-max = 2097152
    fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc = fq_codel

    # high gains for use with kernel 4.9.*+.
    net.core.default_qdisc = fq
    net.ipv4.tcp_congestion_control = bbr

    net.core.netdev_budget = 8000
    net.core.netdev_max_backlog = 16000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 8388608
    net.core.rmem_max = 16777216
    net.core.somaxconn = 1024
    net.core.somaxconn = 4096
    net.core.wmem_default = 8388608
    net.core.wmem_max = 16777216
    net.ipv4.ip_local_port_range = 2000 64035
    @@ -31,13 +35,15 @@ net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384

    # I have enough RAM in my NAS thank you very much;

    vm.dirty_background_ratio = 8
    vm.dirty_ratio = 80
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32

    #disable ipv6
    # if you want to disable ipv6 (for LAN use)
    net.ipv6.conf.all.disable_ipv6 = 1
    net.ipv6.conf.default.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1
  13. jult revised this gist Feb 1, 2019. 1 changed file with 6 additions and 0 deletions.
    6 changes: 6 additions & 0 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -30,8 +30,14 @@ net.ipv4.tcp_wmem = 4096 65536 16777216
    net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384

    vm.dirty_background_ratio = 8
    vm.dirty_ratio = 80
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32

    #disable ipv6
    net.ipv6.conf.all.disable_ipv6 = 1
    net.ipv6.conf.default.disable_ipv6 = 1
    net.ipv6.conf.lo.disable_ipv6 = 1
  14. jult revised this gist Apr 25, 2018. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -2,15 +2,15 @@ kernel.domainname = your-rdns-FQDN.here
    fs.file-max = 2097152
    fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc=fq_codel
    net.core.default_qdisc = fq_codel
    net.core.netdev_budget = 8000
    net.core.netdev_max_backlog = 16000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 8388608
    net.core.rmem_max = 16777216
    net.core.somaxconn = 1024
    net.core.wmem_default = 8388608
    net.core.wmem_max= 16777216
    net.core.wmem_max = 16777216
    net.ipv4.ip_local_port_range = 2000 64035
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_intvl = 30
  15. jult revised this gist Apr 25, 2018. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -19,19 +19,19 @@ net.ipv4.tcp_max_syn_backlog = 8096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_mem = 65536 131072 262144
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.tcp_rmem= 4096 87380 16777216
    net.ipv4.tcp_rmem = 4096 87380 16777216
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_wmem= 4096 65536 16777216
    net.ipv4.tcp_wmem = 4096 65536 16777216
    net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384
    vm.dirty_background_ratio = 8
    vm.dirty_ratio = 80
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32
    vm.vfs_cache_pressure = 32
  16. jult revised this gist Apr 25, 2018. No changes.
  17. jult revised this gist Apr 25, 2018. 1 changed file with 6 additions and 6 deletions.
    12 changes: 6 additions & 6 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -3,14 +3,14 @@ fs.file-max = 2097152
    fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc=fq_codel
    net.core.netdev_budget = 800
    net.core.netdev_max_backlog = 8000
    net.core.netdev_budget = 8000
    net.core.netdev_max_backlog = 16000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 8388608
    net.core.rmem_max = 8388608
    net.core.rmem_max = 16777216
    net.core.somaxconn = 1024
    net.core.wmem_default = 8388608
    net.core.wmem_max = 8388608
    net.core.wmem_max= 16777216
    net.ipv4.ip_local_port_range = 2000 64035
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_intvl = 30
    @@ -19,14 +19,14 @@ net.ipv4.tcp_max_syn_backlog = 8096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_mem = 65536 131072 262144
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.tcp_rmem = 4096 4194304 8388608
    net.ipv4.tcp_rmem= 4096 87380 16777216
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_wmem = 4096 4194304 8388608
    net.ipv4.tcp_wmem= 4096 65536 16777216
    net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384
  18. jult revised this gist Apr 24, 2018. 1 changed file with 13 additions and 12 deletions.
    25 changes: 13 additions & 12 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -4,33 +4,34 @@ fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc=fq_codel
    net.core.netdev_budget = 800
    net.core.netdev_max_backlog = 32000
    net.core.netdev_max_backlog = 8000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 31457280
    net.core.rmem_max = 16777216
    net.core.rmem_default = 8388608
    net.core.rmem_max = 8388608
    net.core.somaxconn = 1024
    net.core.wmem_default = 31457280
    net.core.wmem_max = 16777216
    net.core.wmem_default = 8388608
    net.core.wmem_max = 8388608
    net.ipv4.ip_local_port_range = 2000 64035
    net.ipv4.tcp_fin_timeout = 30
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_intvl = 30
    net.ipv4.tcp_keepalive_probes = 5
    net.ipv4.tcp_max_syn_backlog = 8096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_mem = 65536 131072 262144
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.tcp_rmem = 4096 12582912 16777216
    net.ipv4.tcp_rmem = 4096 4194304 8388608
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_syncookies = 1
    net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_wmem = 4096 12582912 16777216
    net.ipv4.tcp_wmem = 4096 4194304 8388608
    net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384
    vm.dirty_background_ratio = 18
    vm.dirty_ratio = 90
    vm.swappiness = 0
    vm.vfs_cache_pressure = 32
    vm.dirty_background_ratio = 8
    vm.dirty_ratio = 80
    vm.overcommit_memory = 1
    vm.swappiness = 1
    vm.vfs_cache_pressure = 32
  19. jult revised this gist Apr 13, 2018. 1 changed file with 1 addition and 0 deletions.
    1 change: 1 addition & 0 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -33,3 +33,4 @@ vm.dirty_background_ratio = 18
    vm.dirty_ratio = 90
    vm.swappiness = 0
    vm.vfs_cache_pressure = 32
    vm.overcommit_memory = 1
  20. jult revised this gist Mar 25, 2018. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -4,7 +4,7 @@ fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc=fq_codel
    net.core.netdev_budget = 800
    net.core.netdev_max_backlog = 5000
    net.core.netdev_max_backlog = 32000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 31457280
    net.core.rmem_max = 16777216
  21. jult revised this gist Mar 25, 2018. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -8,7 +8,7 @@ net.core.netdev_max_backlog = 5000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 31457280
    net.core.rmem_max = 16777216
    net.core.somaxconn = 1000
    net.core.somaxconn = 1024
    net.core.wmem_default = 31457280
    net.core.wmem_max = 16777216
    net.ipv4.ip_local_port_range = 2000 64035
  22. jult revised this gist Mar 23, 2018. No changes.
  23. jult revised this gist Mar 23, 2018. 1 changed file with 0 additions and 4 deletions.
    4 changes: 0 additions & 4 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -4,21 +4,17 @@ fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc=fq_codel
    net.core.netdev_budget = 800
    net.core.netdev_budget = 800
    net.core.netdev_max_backlog = 5000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 31457280
    net.core.rmem_max = 16777216
    net.core.somaxconn = 1000
    net.core.somaxconn = 65536
    net.core.wmem_default = 31457280
    net.core.wmem_max = 16777216
    net.ipv4.ip_local_port_range = 2000 64035
    net.ipv4.tcp_fin_timeout = 30
    net.ipv4.tcp_keepalive_intvl = 30
    net.ipv4.tcp_keepalive_probes = 5
    net.ipv4.tcp_max_syn_backlog = 3240000
    net.ipv4.tcp_max_syn_backlog = 3240000
    net.ipv4.tcp_max_syn_backlog = 8096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_mem = 65536 131072 262144
  24. jult created this gist Mar 23, 2018.
    39 changes: 39 additions & 0 deletions sysctl.conf
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,39 @@
    kernel.domainname = your-rdns-FQDN.here
    fs.file-max = 2097152
    fs.inotify.max_user_instances = 4096
    fs.inotify.max_user_watches = 4096
    net.core.default_qdisc=fq_codel
    net.core.netdev_budget = 800
    net.core.netdev_budget = 800
    net.core.netdev_max_backlog = 5000
    net.core.optmem_max = 25165824
    net.core.rmem_default = 31457280
    net.core.rmem_max = 16777216
    net.core.somaxconn = 1000
    net.core.somaxconn = 65536
    net.core.wmem_default = 31457280
    net.core.wmem_max = 16777216
    net.ipv4.ip_local_port_range = 2000 64035
    net.ipv4.tcp_fin_timeout = 30
    net.ipv4.tcp_keepalive_intvl = 30
    net.ipv4.tcp_keepalive_probes = 5
    net.ipv4.tcp_max_syn_backlog = 3240000
    net.ipv4.tcp_max_syn_backlog = 3240000
    net.ipv4.tcp_max_syn_backlog = 8096
    net.ipv4.tcp_max_tw_buckets = 1440000
    net.ipv4.tcp_mem = 65536 131072 262144
    net.ipv4.tcp_rfc1337 = 1
    net.ipv4.tcp_rmem = 4096 12582912 16777216
    net.ipv4.tcp_slow_start_after_idle = 0
    net.ipv4.tcp_synack_retries = 2
    net.ipv4.tcp_tw_recycle = 1
    net.ipv4.tcp_tw_reuse = 1
    net.ipv4.tcp_window_scaling = 1
    net.ipv4.tcp_wmem = 4096 12582912 16777216
    net.ipv4.udp_mem = 65536 131072 262144
    net.ipv4.udp_rmem_min = 16384
    net.ipv4.udp_wmem_min = 16384
    vm.dirty_background_ratio = 18
    vm.dirty_ratio = 90
    vm.swappiness = 0
    vm.vfs_cache_pressure = 32