centos 8 BBRオープン
2669 ワード
2016年、GoogleチームはBBR用プラグ制御アルゴリズムを発表し、できるだけ帯域幅を満たすことができるようになった.
Linuxコミュニティの統合速度は速いですね.4.9コアにはBBRが統合されていますが、デフォルトではオンになっていません.こんないいもの、どうして開かないの?
BBRをオンにするには、まずuname-rを使用して、現在のカーネルが4.9+であるかどうかを確認します.
2つのパラメータを入力します.
echo “net.core.default_qdisc=fq” >>/etc/sysctl.conf echo “net.ipv4.tcp_congestion_control=bbr” >>/etc/sysctl.confはシステムに保存されます.
Sysctl-p BBRがオンになっているかどうかを確認します.
sysctl net.ipv4.tcp_available_congestion_control sysctl net.ipv4.tcp_congestion_コントロール結果にBBRがある場合は、カーネルがBBRを開いていることを証明します.
lsmod|grep bbrを実行し、tcp_が表示されます.bbrモジュールは、BBRが起動したことを示します.
もちろん、ネットワークを最適化したいなら...うん
/etc/sysctlを編集します.conf:
max open files
その後vi/etc/profileを変更し、
ulimit -SHn 1024000
Linuxコミュニティの統合速度は速いですね.4.9コアにはBBRが統合されていますが、デフォルトではオンになっていません.こんないいもの、どうして開かないの?
BBRをオンにするには、まずuname-rを使用して、現在のカーネルが4.9+であるかどうかを確認します.
2つのパラメータを入力します.
echo “net.core.default_qdisc=fq” >>/etc/sysctl.conf echo “net.ipv4.tcp_congestion_control=bbr” >>/etc/sysctl.confはシステムに保存されます.
Sysctl-p BBRがオンになっているかどうかを確認します.
sysctl net.ipv4.tcp_available_congestion_control sysctl net.ipv4.tcp_congestion_コントロール結果にBBRがある場合は、カーネルがBBRを開いていることを証明します.
lsmod|grep bbrを実行し、tcp_が表示されます.bbrモジュールは、BBRが起動したことを示します.
もちろん、ネットワークを最適化したいなら...うん
/etc/sysctlを編集します.conf:
max open files
fs.file-max = 51200
max read buffer
net.core.rmem_max = 67108864
max write buffer
net.core.wmem_max = 67108864
default read buffer
net.core.rmem_default = 65536
default write buffer
net.core.wmem_default = 65536
max processor input queue
net.core.netdev_max_backlog = 4096
max backlog
net.core.somaxconn = 4096
resist SYN flood attacks
net.ipv4.tcp_syncookies = 1
reuse timewait sockets when safe
net.ipv4.tcp_tw_reuse = 1
turn off fast timewait sockets recycling
net.ipv4.tcp_tw_recycle = 0
short FIN timeout
net.ipv4.tcp_fin_timeout = 30
short keepalive time
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.core.rmem_max = 67108864
max write buffer
net.core.wmem_max = 67108864
default read buffer
net.core.rmem_default = 65536
default write buffer
net.core.wmem_default = 65536
max processor input queue
net.core.netdev_max_backlog = 4096
max backlog
net.core.somaxconn = 4096
resist SYN flood attacks
net.ipv4.tcp_syncookies = 1
reuse timewait sockets when safe
net.ipv4.tcp_tw_reuse = 1
turn off fast timewait sockets recycling
net.ipv4.tcp_tw_recycle = 0
short FIN timeout
net.ipv4.tcp_fin_timeout = 30
short keepalive time
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.core.rmem_default = 65536
default write buffer
net.core.wmem_default = 65536
max processor input queue
net.core.netdev_max_backlog = 4096
max backlog
net.core.somaxconn = 4096
resist SYN flood attacks
net.ipv4.tcp_syncookies = 1
reuse timewait sockets when safe
net.ipv4.tcp_tw_reuse = 1
turn off fast timewait sockets recycling
net.ipv4.tcp_tw_recycle = 0
short FIN timeout
net.ipv4.tcp_fin_timeout = 30
short keepalive time
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.core.netdev_max_backlog = 4096
max backlog
net.core.somaxconn = 4096
resist SYN flood attacks
net.ipv4.tcp_syncookies = 1
reuse timewait sockets when safe
net.ipv4.tcp_tw_reuse = 1
turn off fast timewait sockets recycling
net.ipv4.tcp_tw_recycle = 0
short FIN timeout
net.ipv4.tcp_fin_timeout = 30
short keepalive time
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_syncookies = 1
reuse timewait sockets when safe
net.ipv4.tcp_tw_reuse = 1
turn off fast timewait sockets recycling
net.ipv4.tcp_tw_recycle = 0
short FIN timeout
net.ipv4.tcp_fin_timeout = 30
short keepalive time
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_tw_recycle = 0
short FIN timeout
net.ipv4.tcp_fin_timeout = 30
short keepalive time
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_keepalive_time = 1200
outbound port range
net.ipv4.ip_local_port_range = 10000 65000
max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_max_syn_backlog = 4096
max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_fastopen = 3
TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_wmem = 4096 65536 67108864
turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
use bbr
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
net.ipv4.tcp_congestion_control = bbr
for high-latency network
#net.ipv4.tcp_congestion_control = hybla
for low-latency network, use cubic instead
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
#net.ipv4.tcp_congestion_control = cubic
net.core.default_qdisc=fqの後は
Sysctl-pファイルハンドル数制限を変更したい場合は、/etc/security/limitsを変更します.conf,加入
soft nofile 512000
hard nofile 1024000
その後vi/etc/profileを変更し、
ulimit -SHn 1024000