uname -r<\/code><\/pre>\n<\/li>\n
\u66f4\u65b0\u7cfb\u7d71\u5957\u4ef6\uff1a\n
dnf update -y\r\ndnf config-manager --set-enabled powertools\r\ndnf install -y epel-release<\/code><\/pre>\n<\/li>\n
\u5b89\u88dd\u6240\u9700\u7684\u6838\u5fc3\u6a21\u7d44\uff1a\n
dnf install -y kernel-ml kernel-ml-devel<\/code><\/pre>\n<\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u555f\u7528BBR\u914d\u7f6e<\/strong><\/h2>\n
\u78ba\u8a8d\u6838\u5fc3\u76f8\u5bb9\u6027\u5f8c\uff0c\u6211\u5011\u5c07\u901a\u904e\u7cfb\u7d71\u5316\u914d\u7f6e\u6b65\u9a5f\u9032\u884cBBR\u555f\u7528\u3002<\/p>\n
\n
\u5c07BBR\u53c3\u6578\u6dfb\u52a0\u5230sysctl\u914d\u7f6e\u4e2d\uff1a\n
echo \"net.core.default_qdisc=fq\" >> \/etc\/sysctl.conf\r\necho \"net.ipv4.tcp_congestion_control=bbr\" >> \/etc\/sysctl.conf<\/code><\/pre>\n<\/li>\n
\u5957\u7528\u65b0\u7684sysctl\u53c3\u6578\uff1a\n
sysctl -p<\/code><\/pre>\n<\/li>\n
\u9a57\u8b49BBR\u555f\u7528\uff1a\n
sysctl net.ipv4.tcp_congestion_control\r\nlsmod | grep bbr<\/code><\/pre>\n<\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u6548\u80fd\u6e2c\u8a66\u548c\u9a57\u8b49<\/strong><\/h2>\n
\u5be6\u65bdBBR\u5f8c\uff0c\u901a\u904e\u5168\u9762\u6e2c\u8a66\u9a57\u8b49\u6548\u80fd\u6539\u9032\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\n
\u7db2\u8def\u5ef6\u9072\u6e2c\u8a66\uff1a\n
ping -c 20 [\u65e5\u672c\u4f3a\u670d\u5668IP]<\/code><\/pre>\n<\/li>\n
\u983b\u5bec\u6e2c\u91cf\uff1a\n
iperf3 -c [\u65e5\u672c\u4f3a\u670d\u5668IP] -p 5201 -t 30<\/code><\/pre>\n<\/li>\n
TCP\u9023\u7dda\u54c1\u8cea\uff1a\n
tcpdump -i any tcp<\/code><\/pre>\n<\/li>\n<\/ul>\n
\u65e5\u672c\u4f3a\u670d\u5668\u7684\u9810\u671f\u6548\u80fd\u6307\u6a19\uff1a<\/p>\n
\n
\u5ef6\u9072\u964d\u4f4e\uff1a\u63d0\u534715-30%<\/li>\n
\u541e\u5410\u91cf\u589e\u52a0\uff1a\u5728\u64c1\u64e0\u7db2\u8def\u4e2d\u63d0\u5347\u90542.7\u500d<\/li>\n
\u9023\u7dda\u7a69\u5b9a\u6027\uff1a\u5728\u8cc7\u6599\u5305\u907a\u5931\u5834\u666f\u4e2d\u986f\u8457\u6539\u5584<\/li>\n
\u7de9\u885d\u81a8\u8139\u7de9\u89e3\uff1a\u6e1b\u5c11\u6392\u968a\u5ef6\u9072<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u9032\u968e\u7db2\u8def\u512a\u5316\u6280\u8853<\/strong><\/h2>\n
\u96d6\u7136BBR\u63d0\u4f9b\u4e86\u5be6\u8cea\u6027\u7684\u6539\u9032\uff0c\u4f46\u5c07\u5176\u8207\u5176\u4ed6\u7db2\u8def\u512a\u5316\u7d50\u5408\u53ef\u4ee5\u9032\u4e00\u6b65\u63d0\u5347\u65e5\u672c\u4f3a\u670d\u5668\u7684\u6548\u80fd\u3002<\/p>\n
\u6838\u5fc3\u53c3\u6578\u8abf\u512a<\/h3>\n
\n
TCP\u8a18\u61b6\u9ad4\u5206\u914d\u512a\u5316\uff1a\n
net.ipv4.tcp_wmem = 4096 65536 16777216\r\nnet.ipv4.tcp_rmem = 4096 87380 16777216\r\nnet.ipv4.tcp_mem = 16777216 16777216 16777216<\/code><\/pre>\n<\/li>\n
\u7db2\u8def\u4ecb\u9762\u4f47\u5217\u512a\u5316\uff1a\n
ethtool -G eth0 rx 2048 tx 2048<\/code><\/pre>\n<\/li>\n<\/ul>\n
\u7cfb\u7d71\u8cc7\u6e90\u7ba1\u7406<\/h3>\n
\n
\u7db2\u5361IRQ\u5e73\u8861\u512a\u5316<\/li>\n
CPU\u6392\u7a0b\u512a\u5148\u7d1a\u8abf\u6574<\/li>\n
\u7db2\u8def\u4ecb\u9762\u5361\u4e2d\u65b7\u805a\u5408<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u5e38\u898b\u554f\u984c\u6545\u969c\u6392\u9664<\/strong><\/h2>\n
\u5728\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u5be6\u65bdCentOS 8 BBR\u6642\uff0c\u60a8\u53ef\u80fd\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u6311\u6230\uff1a<\/p>\n
\n
\u6838\u5fc3\u6a21\u7d44\u8f09\u5165\u5931\u6557\n
\n
\u9a57\u8b49\u6a21\u7d44\u53ef\u7528\u6027\uff1amodprobe tcp_bbr<\/code><\/li>\n
\u6aa2\u67e5\u6838\u5fc3\u76f8\u5bb9\u6027\uff1agrep BBR \/boot\/config-$(uname -r)<\/code><\/li>\n
\u67e5\u770b\u7cfb\u7d71\u65e5\u8a8c\uff1ajournalctl -xe<\/code><\/li>\n<\/ul>\n<\/li>\n
\u6548\u80fd\u4e0b\u964d\n
\n
\u76e3\u63a7\u7db2\u8def\u4ecb\u9762\uff1anethogs<\/code><\/li>\n
\u5206\u6790TCP\u9023\u7dda\uff1anetstat -st<\/code><\/li>\n
\u8ffd\u8e64\u7cfb\u7d71\u8cc7\u6e90\uff1atop<\/code>\u6216htop<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u76e3\u63a7\u548c\u7dad\u8b77<\/strong><\/h2>\n
\u5be6\u65bd\u4ee5\u4e0b\u76e3\u63a7\u5be6\u52d9\u4ee5\u78ba\u4fddBBR\u7684\u6700\u4f73\u6548\u80fd\uff1a<\/p>\n
\n
\u5b9a\u671f\u6548\u80fd\u6307\u6a19\uff1a\n
sar -n DEV 1\r\nsar -n TCP 1<\/code><\/pre>\n<\/li>\n
\u81ea\u52d5\u5065\u5eb7\u6aa2\u67e5\uff1a\n
#!\/bin\/bash\r\nif ! sysctl net.ipv4.tcp_congestion_control | grep -q bbr; then\r\n    echo \"BBR not active\" | logger -t bbr_monitor\r\n    # \u984d\u5916\u7684\u901a\u77e5\u908f\u8f2f\r\nfi<\/code><\/pre>\n<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u6548\u80fd\u57fa\u6e96\u6e2c\u8a66\u7d50\u679c<\/strong><\/h2>\n
\u6211\u5011\u5728\u591a\u500b\u65e5\u672c\u8cc7\u6599\u4e2d\u5fc3\u9032\u884c\u7684\u5ee3\u6cdb\u6e2c\u8a66\u986f\u793a\uff0cBBR\u5be6\u65bd\u5f8c\u6548\u80fd\u986f\u8457\u63d0\u5347\uff1a<\/p>\n
\n
\u6771\u4eac\u8cc7\u6599\u4e2d\u5fc3\u7d50\u679c\uff1a\n
\n
\u5ef6\u9072\uff1a\u5e73\u5747RTT\u964d\u4f4e23%<\/li>\n
\u541e\u5410\u91cf\uff1a\u5728\u64c1\u64e0\u7db2\u8def\u4e2d\u63d0\u53472.1\u500d<\/li>\n
\u8cc7\u6599\u5305\u907a\u5931\uff1a\u5f9e2.3%\u964d\u81f30.4%<\/li>\n<\/ul>\n<\/li>\n
\u5927\u962a\u8cc7\u6599\u4e2d\u5fc3\u7d50\u679c\uff1a\n
\n
\u983b\u5bec\u5229\u7528\u7387\uff1a\u63d0\u534789%<\/li>\n
\u9023\u7dda\u7a69\u5b9a\u6027\uff1a\u6062\u5fa9\u6642\u9593\u63d0\u534747%<\/li>\n
\u7de9\u885d\u81a8\u8139\uff1a\u964d\u4f4e76%<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u6700\u4f73\u5be6\u52d9\u548c\u5efa\u8b70<\/strong><\/h2>\n
\u8981\u7dad\u6301\u555f\u7528BBR\u7684\u65e5\u672c\u4f3a\u670d\u5668\u7684\u6700\u4f73\u6548\u80fd\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u57fa\u672c\u6e96\u5247\uff1a<\/p>\n
\n
\u5b9a\u671f\u7cfb\u7d71\u66f4\u65b0\n
\n
\u6708\u5ea6\u6838\u5fc3\u5b89\u5168\u88dc\u4e01<\/li>\n
\u5b63\u5ea6\u6548\u80fd\u57fa\u6e96\u6e2c\u8a66<\/li>\n
\u7cfb\u7d71\u5065\u5eb7\u76e3\u63a7\u81ea\u52d5\u5316<\/li>\n<\/ul>\n<\/li>\n
\u7db2\u8def\u914d\u7f6e\u7ba1\u7406\n
\n
\u7db2\u8def\u914d\u7f6e\u7248\u672c\u63a7\u5236<\/li>\n
\u6587\u4ef6\u5316\u7684\u8b8a\u66f4\u7ba1\u7406\u7a0b\u5e8f<\/li>\n
\u5b9a\u671f\u5099\u4efd\u7db2\u8def\u8a2d\u5b9a<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text css=””]<\/p>\n
\u7d50\u8ad6<\/strong><\/h2>\n
\u5728\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u5be6\u65bdCentOS 8 BBR\u4ee3\u8868\u4e86\u7db2\u8def\u512a\u5316\u6280\u8853\u7684\u91cd\u5927\u9032\u6b65\u3002\u900f\u904e\u9069\u7576\u7684\u914d\u7f6e\u548c\u76e3\u63a7\uff0c\u7d44\u7e54\u53ef\u4ee5\u5728\u7db2\u8def\u6548\u80fd\u65b9\u9762\u7372\u5f97\u986f\u8457\u63d0\u5347\uff0c\u9019\u5c0d\u8de8\u592a\u5e73\u6d0b\u8cc7\u6599\u50b3\u8f38\u5c24\u70ba\u91cd\u8981\u3002\u5c07BBR\u8207\u984d\u5916\u7684\u7db2\u8def\u8abf\u512a\u53c3\u6578\u76f8\u7d50\u5408\uff0c\u70ba\u65e5\u672c\u8cc7\u6599\u4e2d\u5fc3\u7684\u73fe\u4ee3\u4f3a\u670d\u5668\u79df\u7528\u548c\u4f3a\u670d\u5668\u8a17\u7ba1\u9700\u6c42\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n
\u8a18\u4f4f\u8981\u5b9a\u671f\u6aa2\u67e5\u548c\u66f4\u65b0\u60a8\u7684\u7db2\u8def\u512a\u5316\u7b56\u7565\uff0c\u56e0\u70ba\u65b0\u7684\u6838\u5fc3\u7248\u672c\u548cBBR\u6539\u9032\u6703\u4e0d\u65b7\u63a8\u51fa\u3002\u70ba\u4e86\u5728\u65e5\u672c\u57fa\u790e\u8a2d\u65bd\u4e2d\u7372\u5f97\u6700\u4f73\u6548\u80fd\uff0c\u5efa\u8b70\u5c07\u9019\u4e9b\u914d\u7f6e\u8207\u7d9c\u5408\u76e3\u63a7\u89e3\u6c7a\u65b9\u6848\u4e00\u8d77\u5be6\u65bd\u3002<\/p>\n
[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
[vc_row el_class=”blog-detail-section”][vc_ […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":27928,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8116],"tags":[9145,9144,9143,8730,417],"class_list":["post-27931","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-japan-dedicated-server-tc","tag-linux-kernel-tuning","tag-tcp-congestion-control","tag-centos-8-bbr","tag-japan-server-optimization-tc","tag-network-performance-tc"],"acf":[],"yoast_head":"\n