\u5982\u679c\u8f93\u51fa\u663e\u793a\u7684\u7248\u672c\u53f7\u4f4e\u4e8e4.9\uff0c\u60a8\u9700\u8981\u5148\u5347\u7ea7\u5185\u6838\u3002<\/p>\n

2. \u5185\u6838\u5347\u7ea7\u6d41\u7a0b\uff08\u5982\u9700\u8981\uff09<\/h3>\n

\u5bf9\u4e8eUbuntu\/Debian\u7cfb\u7edf\uff0c\u6267\u884c\u8fd9\u4e9b\u547d\u4ee4\uff1a<\/p>\n

# \u66f4\u65b0\u8f6f\u4ef6\u5305\u5217\u8868\r\napt update && apt upgrade -y\r\n\r\n# \u5982\u679c\u672a\u5b89\u88c5wget\u5219\u5b89\u88c5\r\napt install wget -y\r\n\r\n# \u4e0b\u8f7d\u5e76\u5b89\u88c5\u6700\u65b0\u5185\u6838\r\nwget http:\/\/kernel.ubuntu.com\/~kernel-ppa\/mainline\/v5.x.x\/linux-image-5.x.x-generic.deb\r\ndpkg -i linux-image-5.x.x-generic.deb\r\n\r\n# \u91cd\u542f\u670d\u52a1\u5668\r\nreboot<\/code><\/pre>\n
\u5bf9\u4e8eCentOS\u7cfb\u7edf\uff0c\u8fc7\u7a0b\u7565\u6709\u4e0d\u540c\uff1a<\/p>\n
# \u542f\u7528ELRepo\u4ed3\u5e93\r\nrpm --import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrepo.org\r\nrpm -Uvh http:\/\/www.elrepo.org\/elrepo-release-7.0-2.el7.elrepo.noarch.rpm\r\n\r\n# \u5b89\u88c5\u6700\u65b0\u4e3b\u7ebf\u5185\u6838\r\nyum --enablerepo=elrepo-kernel install kernel-ml -y\r\n\r\n# \u914d\u7f6eGRUB\u4f7f\u7528\u65b0\u5185\u6838\r\ngrub2-set-default 0\r\ngrub2-mkconfig -o \/boot\/grub2\/grub.cfg\r\n\r\n# \u91cd\u542f\u670d\u52a1\u5668\r\nreboot<\/code><\/pre>\n
3. \u542f\u7528BBR<\/h3>\n
\u786e\u4fdd\u60a8\u6709\u517c\u5bb9\u7684\u5185\u6838\u7248\u672c\u540e\uff0c\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u542f\u7528BBR\uff1a<\/p>\n
# \u5c06\u8fd9\u4e9b\u884c\u6dfb\u52a0\u5230\/etc\/sysctl.conf\r\necho \"net.core.default_qdisc=fq\" >> \/etc\/sysctl.conf\r\necho \"net.ipv4.tcp_congestion_control=bbr\" >> \/etc\/sysctl.conf\r\n\r\n# \u5e94\u7528\u66f4\u6539\r\nsysctl -p\r\n\r\n# \u9a8c\u8bc1BBR\u5df2\u542f\u7528\r\nsysctl net.ipv4.tcp_congestion_control<\/code><\/pre>\n
4. \u9a8c\u8bc1\u6b65\u9aa4<\/h3>\n
\u8981\u786e\u8ba4BBR\u6b63\u5e38\u5de5\u4f5c\uff0c\u8fd0\u884c\u8fd9\u4e9b\u547d\u4ee4\uff1a<\/p>\n
# \u68c0\u67e5BBR\u662f\u5426\u5728\u4f7f\u7528\u4e2d\r\nlsmod | grep bbr\r\n\r\n# \u76d1\u63a7TCP\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\r\ncat \/proc\/sys\/net\/ipv4\/tcp_congestion_control<\/code><\/pre>\n
\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316<\/strong><\/h2>\n
\u5b9e\u65bdBBR\u540e\uff0c\u76d1\u63a7\u548c\u9a8c\u8bc1\u5176\u5bf9\u670d\u52a1\u5668\u6027\u80fd\u7684\u5f71\u54cd\u81f3\u5173\u91cd\u8981\u3002\u8ba9\u6211\u4eec\u63a2\u8ba8\u5e94\u8be5\u8ffd\u8e2a\u7684\u5de5\u5177\u548c\u6307\u6807\u3002<\/p>\n
\u7f51\u7edc\u6027\u80fd\u6d4b\u8bd5<\/h3>\n
\u4f7f\u7528\u8fd9\u4e9b\u4e13\u95e8\u5de5\u5177\u6765\u6d4b\u91cf\u6539\u8fdb\uff1a<\/p>\n
# \u5b89\u88c5\u6027\u80fd\u6d4b\u8bd5\u5de5\u5177\r\napt install iperf3 nethogs iftop -y\r\n\r\n# \u4f7f\u7528iperf3\u8fd0\u884c\u901f\u5ea6\u6d4b\u8bd5\r\niperf3 -c iperf.server.example.com -p 5201 -t 30\r\n\r\n# \u76d1\u63a7\u5b9e\u65f6\u5e26\u5bbd\u4f7f\u7528\r\niftop -i eth0<\/code><\/pre>\n
\u9700\u8981\u76d1\u63a7\u7684\u5173\u952e\u6307\u6807\u5305\u62ec\uff1a<\/p>\n
\n
\u541e\u5410\u91cf\uff08Mbps\uff09<\/li>\n
\u5f80\u8fd4\u65f6\u95f4\uff08RTT\uff09<\/li>\n
\u6570\u636e\u5305\u4e22\u5931\u7387<\/li>\n
\u8fde\u63a5\u7a33\u5b9a\u6027<\/li>\n<\/ul>\n
\u9ad8\u7ea7BBR\u8c03\u4f18\u53c2\u6570<\/strong><\/h2>\n
\u5bf9\u4e8e\u9700\u8981\u7cbe\u7ec6\u8c03\u4f18\u6027\u80fd\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\uff0c\u8003\u8651\u8fd9\u4e9b\u989d\u5916\u7684\u7cfb\u7edf\u53c2\u6570\uff1a<\/p>\n
# \u6dfb\u52a0\u5230\/etc\/sysctl.conf\r\nnet.core.rmem_max = 67108864\r\nnet.core.wmem_max = 67108864\r\nnet.ipv4.tcp_rmem = 4096 87380 67108864\r\nnet.ipv4.tcp_wmem = 4096 87380 67108864\r\nnet.ipv4.tcp_mtu_probing = 1\r\nnet.ipv4.tcp_slow_start_after_idle = 0<\/code><\/pre>\n
\u53c2\u6570\u8bf4\u660e\uff1a<\/h3>\n
\n
rmem_max\/wmem_max\uff1a\u6700\u5927\u63a5\u6536\/\u53d1\u9001\u5957\u63a5\u5b57\u7f13\u51b2\u533a\u5927\u5c0f<\/li>\n
tcp_rmem\/tcp_wmem\uff1aTCP\u7f13\u51b2\u533a\u7684\u81ea\u52a8\u8c03\u4f18\u8fb9\u754c<\/li>\n
tcp_mtu_probing\uff1a\u542f\u7528\u8def\u5f84MTU\u53d1\u73b0<\/li>\n
tcp_slow_start_after_idle\uff1a\u7981\u7528\u7a7a\u95f2\u671f\u540e\u7684TCP\u6162\u542f\u52a8<\/li>\n<\/ul>\n
\u5e38\u89c1\u95ee\u9898\u6545\u969c\u6392\u9664<\/strong><\/h2>\n
\u5728\u5b9e\u65bdBBR\u65f6\uff0c\u60a8\u53ef\u80fd\u9047\u5230\u8fd9\u4e9b\u6280\u672f\u6311\u6218\uff1a<\/p>\n
1. BBR\u914d\u7f6e\u540e\u672a\u52a0\u8f7d<\/h3>\n
# \u68c0\u67e5BBR\u6a21\u5757\u662f\u5426\u53ef\u7528\r\nmodprobe tcp_bbr\r\nlsmod | grep bbr\r\n\r\n# \u5982\u679c\u6a21\u5757\u7f3a\u5931\uff0c\u91cd\u5efa\u5185\u6838\u6a21\u5757\r\ndepmod -a\r\nmodprobe tcp_bbr<\/code><\/pre>\n
2. \u6027\u80fd\u672a\u8fbe\u5230\u9884\u671f<\/h3>\n
\u8fd0\u884c\u6b64\u8bca\u65ad\u5e8f\u5217\uff1a<\/p>\n
# \u68c0\u67e5\u5f53\u524d\u62e5\u585e\u63a7\u5236\r\nsysctl net.ipv4.tcp_congestion_control\r\n\r\n# \u9a8c\u8bc1\u961f\u5217\u89c4\u5219\r\nsysctl net.core.default_qdisc\r\n\r\n# \u76d1\u63a7TCP\u8fde\u63a5\r\nss -info | grep bbr<\/code><\/pre>\n
\u5b9e\u9645\u6027\u80fd\u5f71\u54cd<\/strong><\/h2>\n
\u57fa\u4e8e\u5728\u5404\u79cd\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\u7684\u5e7f\u6cdb\u6d4b\u8bd5\uff0cBBR\u901a\u5e38\u5e26\u6765\u8fd9\u4e9b\u6027\u80fd\u63d0\u5347\uff1a<\/p>\n
\n
\u9ad8\u5ef6\u8fdf\u8fde\u63a5\u7684\u541e\u5410\u91cf\u63d0\u9ad830-40%<\/li>\n
\u5e73\u5747\u9875\u9762\u52a0\u8f7d\u65f6\u95f4\u51cf\u5c1115-25%<\/li>\n
\u89c6\u9891\u6d41\u8d28\u91cf\u663e\u8457\u6539\u5584<\/li>\n
\u66f4\u597d\u5730\u5904\u7406\u7f51\u7edc\u62e5\u585e\u4e8b\u4ef6<\/li>\n<\/ul>\n
\u6301\u7eed\u4f18\u5316\u7684\u6700\u4f73\u5b9e\u8df5<\/strong><\/h2>\n
\u8981\u5728\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\u4fdd\u6301\u6700\u4f73\u6027\u80fd\uff0c\u5b9e\u65bd\u8fd9\u4e9b\u9ad8\u7ea7\u5b9e\u8df5\uff1a<\/p>\n
# \u521b\u5efa\u76d1\u63a7\u811a\u672c\r\n#!\/bin\/bash\r\nwhile true; do\r\n    date >> \/var\/log\/bbr_monitor.log\r\n    ss -info | grep bbr >> \/var\/log\/bbr_monitor.log\r\n    sleep 300\r\ndone<\/code><\/pre>\n
\u5b89\u6392\u5b9a\u671f\u6027\u80fd\u5ba1\u8ba1\uff1a<\/p>\n
# \u6dfb\u52a0\u5230crontab\r\n0 0 * * * \/usr\/local\/bin\/performance_audit.sh\r\n<\/code><\/pre>\n
\u672a\u6765\u53d1\u5c55\u548c\u66ff\u4ee3\u65b9\u6848<\/strong><\/h2>\n
\u968f\u7740BBR\u7ee7\u7eed\u53d1\u5c55\uff0c\u8bf7\u5173\u6ce8\u8fd9\u4e9b\u65b0\u5174\u6280\u672f\uff1a<\/p>\n
\n
\u5177\u6709\u6539\u8fdb\u62e5\u585e\u63a7\u5236\u7684BBR v2<\/li>\n
\u6df7\u5408\u62e5\u585e\u63a7\u5236\u7b97\u6cd5<\/li>\n
\u4e0eQUIC\u534f\u8bae\u7684\u96c6\u6210<\/li>\n<\/ul>\n
\u7ed3\u8bba\u548c\u5173\u952e\u8981\u70b9<\/strong><\/h2>\n
BBR\u4f18\u5316\u4ee3\u8868\u4e86\u670d\u52a1\u5668\u6027\u80fd\u63d0\u5347\u7684\u91cd\u8981\u8fdb\u6b65\uff0c\u8fd9\u5bf9\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u5c24\u4e3a\u91cd\u8981\u3002\u867d\u7136\u5b9e\u65bd\u8fc7\u7a0b\u5177\u6709\u6280\u672f\u6027\uff0c\u4f46\u5728\u6b63\u786e\u914d\u7f6e\u65f6\u80fd\u5e26\u6765\u663e\u8457\u6536\u76ca\u3002\u7ee7\u7eed\u76d1\u63a7\u60a8\u7684\u670d\u52a1\u5668\u6027\u80fd\u6307\u6807\uff0c\u5e76\u53ca\u65f6\u66f4\u65b0\u5230\u6700\u65b0\u7684\u5185\u6838\u7248\u672c\u4ee5\u83b7\u5f97\u6700\u4f73\u7ed3\u679c\u3002<\/p>\n
\u5bf9\u4e8e\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u548c\u7cfb\u7edf\u7ba1\u7406\u5458\u6765\u8bf4\uff0cBBR\u4f18\u5316\u5e94\u88ab\u89c6\u4e3a\u5176\u6027\u80fd\u8c03\u4f18\u5de5\u5177\u5305\u4e2d\u7684\u6807\u51c6\u5b9e\u8df5\u3002\u6539\u8fdb\u7684\u541e\u5410\u91cf\u3001\u964d\u4f4e\u7684\u5ef6\u8fdf\u548c\u66f4\u597d\u7684\u62e5\u585e\u5904\u7406\u80fd\u529b\u4f7f\u5176\u6210\u4e3a\u4efb\u4f55\u4e25\u8083\u7684\u670d\u52a1\u5668\u4f18\u5316\u7b56\u7565\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u7ec4\u6210\u90e8\u5206\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5bf9\u4e8e\u7ba1\u7406\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u7684\u6280\u672f\u4e13\u4e1a\u4eba\u5458\u6765\u8bf4\uff0c\u7f8e\u56fd\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316\u59cb\u7ec8\u662f\u4e00\u4e2a\u5173\u952e\u95ee\u9898\u3002Google\u7684BBR\uff08\u74f6\u9888\u5e26\u5bbd\u548c\u5f80\u8fd4\u4f20\u64ad\u65f6\u95f4\uff09\u5df2\u7ecf\u6210\u4e3a\u63d0\u9ad8\u7f51\u7edc\u541e\u5410\u91cf\u548c\u964d\u4f4e\u5ef6\u8fdf\u7684\u9769\u547d\u6027\u89e3\u51b3\u65b9\u6848\u3002\u672c\u7efc\u5408\u6307\u5357\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5728\u72ec\u7acb\u670d\u52a1\u5668\u4e0a\u5b9e\u65bdBBR\u4f18\u5316\u7684\u8fc7\u7a0b\uff0c\u4e13\u95e8\u9488\u5bf9\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u8fdb\u884c\u8c03\u6574\u3002 \u7406\u89e3BBR\uff1a\u8d85\u8d8a\u4f20\u7edfTCP\u62e5\u585e\u63a7\u5236 BBR\u4ee3\u8868\u4e86\u7f51\u7edc\u62e5\u585e\u63a7\u5236\u65b9\u6cd5\u7684\u4e00\u4e2a\u8303\u5f0f\u8f6c\u53d8\u3002\u4e0e\u4f20\u7edf\u7684CUBIC\u6216Reno\u7b49\u4f9d\u8d56\u6570\u636e\u5305\u4e22\u5931\u4f5c\u4e3a\u62e5\u585e\u4fe1\u53f7\u7684\u7b97\u6cd5\u4e0d\u540c\uff0cBBR\u4f7f\u7528\u5b9e\u65f6\u5e26\u5bbd\u548c\u5f80\u8fd4\u4f20\u64ad\u65f6\u95f4\u6d4b\u91cf\u6765\u4f18\u5316\u6570\u636e\u4f20\u8f93\u3002\u8fd9\u79cd\u6839\u672c\u6027\u7684\u5dee\u5f02\u4f7fBBR\u7279\u522b\u9002\u7528\u4e8e\u5177\u6709\u663e\u8457\u5f80\u8fd4\u65f6\u95f4\u7684\u9ad8\u901f\u7f51\u7edc\u2014\u2014\u8fd9\u5728\u8de8\u5927\u9646\u670d\u52a1\u5668\u79df\u7528\u8bbe\u7f6e\u4e2d\u662f\u5e38\u89c1\u573a\u666f\u3002 \u8be5\u7b97\u6cd5\u6301\u7eed\u6a21\u62df\u7f51\u7edc\u7684\u4f20\u8f93\u7387\u548c\u5f80\u8fd4\u4f20\u64ad\u65f6\u95f4\uff0c\u4f7f\u5176\u80fd\u591f\uff1a \u6700\u5927\u5316\u541e\u5410\u91cf\u540c\u65f6\u6700\u5c0f\u5316\u6392\u961f\u5ef6\u8fdf \u7ef4\u6301\u6700\u4f73\u62e5\u585e\u7a97\u53e3\u5927\u5c0f \u4ece\u7f51\u7edc\u6ce2\u52a8\u4e2d\u5feb\u901f\u6062\u590d \u5728\u9ad8\u5ef6\u8fdf\u56fd\u9645\u8def\u7531\u4e0a\u83b7\u5f97\u66f4\u597d\u7684\u6027\u80fd BBR\u5b9e\u65bd\u7684\u5148\u51b3\u6761\u4ef6 \u5728\u6df1\u5165\u914d\u7f6e\u8fc7\u7a0b\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u60a8\u7684\u670d\u52a1\u5668\u6ee1\u8db3\u4ee5\u4e0b\u6280\u672f\u8981\u6c42\uff1a Linux\u5185\u6838\u7248\u672c4.9\u6216\u66f4\u9ad8 \u72ec\u7acb\u670d\u52a1\u5668\u7684root\u8bbf\u95ee\u6743\u9650 \u5f53\u524d\u7cfb\u7edf\u914d\u7f6e\u7684\u5907\u4efd BBR\u914d\u7f6e\u5206\u6b65\u6307\u5357 \u8ba9\u6211\u4eec\u901a\u8fc7\u8be6\u7ec6\u7684\u547d\u4ee4\u548c\u89e3\u91ca\uff0c\u6df1\u5165\u4e86\u89e3\u6280\u672f\u5b9e\u65bd\u7684\u6bcf\u4e2a\u6b65\u9aa4\u3002 1. \u9a8c\u8bc1\u5f53\u524d\u5185\u6838\u7248\u672c \u9996\u5148\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u68c0\u67e5\u5f53\u524d\u5185\u6838\u7248\u672c\uff1a uname -r \u5982\u679c\u8f93\u51fa\u663e\u793a\u7684\u7248\u672c\u53f7\u4f4e\u4e8e4.9\uff0c\u60a8\u9700\u8981\u5148\u5347\u7ea7\u5185\u6838\u3002 2. \u5185\u6838\u5347\u7ea7\u6d41\u7a0b\uff08\u5982\u9700\u8981\uff09 \u5bf9\u4e8eUbuntu\/Debian\u7cfb\u7edf\uff0c\u6267\u884c\u8fd9\u4e9b\u547d\u4ee4\uff1a # \u66f4\u65b0\u8f6f\u4ef6\u5305\u5217\u8868 apt update && apt upgrade -y # \u5982\u679c\u672a\u5b89\u88c5wget\u5219\u5b89\u88c5 apt install wget -y # \u4e0b\u8f7d\u5e76\u5b89\u88c5\u6700\u65b0\u5185\u6838 wget http:\/\/kernel.ubuntu.com\/~kernel-ppa\/mainline\/v5.x.x\/linux-image-5.x.x-generic.deb dpkg -i linux-image-5.x.x-generic.deb # \u91cd\u542f\u670d\u52a1\u5668 reboot \u5bf9\u4e8eCentOS\u7cfb\u7edf\uff0c\u8fc7\u7a0b\u7565\u6709\u4e0d\u540c\uff1a # \u542f\u7528ELRepo\u4ed3\u5e93 rpm –import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrepo.org rpm […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":3,"featured_media":21803,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4816],"tags":[6135,6136,6137,2205,1949],"class_list":["post-21826","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-america-dedicated-server-sc","tag-bbr-optimization-sc","tag-us-server-performance-sc","tag-linux-kernel-sc","tag-dedicated-hosting-sc","tag-network-optimization-sc"],"acf":[],"yoast_head":"\n