\u5982\u679c\u60a8\u5728\u61c9\u7528\u7a0b\u5f0f\u4e2d\u767c\u73fe\u5167\u5b58\u6d29\u6f0f\uff0c\u8acb\u53ca\u6642\u4fee\u5fa9\u3002\u4f8b\u5982\uff0c\u5728Python\u4e2d\uff1a<\/p>\n

import gc\r\n\r\n# \u6a21\u64ec\u5167\u5b58\u6d29\u6f0f\r\ndef create_memory_leak():\r\n    leaky_list = []\r\n    for i in range(1000000):\r\n        leaky_list.append(i)\r\n\r\n# \u901a\u904e\u6e05\u7a7a\u5217\u8868\u4fee\u5fa9\u5167\u5b58\u6d29\u6f0f\r\ndef fix_memory_leak():\r\n    leaky_list = []\r\n    for i in range(1000000):\r\n        leaky_list.append(i)\r\n    del leaky_list\r\n    gc.collect()\r\n\r\n# \u904b\u884c\u4fee\u5fa9\u5f8c\u7684\u51fd\u6578\r\nfix_memory_leak()<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u78c1\u789fI\/O\u74f6\u9838<\/strong><\/h2>\n
\u78c1\u789fI\/O\u74f6\u9838\u767c\u751f\u5728\u78c1\u789f\u7684\u8b80\u5beb\u64cd\u4f5c\u904e\u65bc\u983b\u7e41\u6216\u7de9\u6162\u6642\uff0c\u53ef\u80fd\u7531\u4ee5\u4e0b\u539f\u56e0\u5f15\u8d77\uff1a<\/p>\n
\n
\u78c1\u789f\u8b80\u5beb\u983b\u7387\u9ad8\u3002<\/li>\n
\u78c1\u789f\u7a7a\u9593\u4e0d\u8db3\u3002<\/li>\n
\u56b4\u91cd\u7684\u78c1\u789f\u788e\u7247\u5316\u3002<\/li>\n<\/ul>\n
\u8981\u7de9\u89e3\u78c1\u789fI\/O\u554f\u984c\uff0c\u8acb\u5617\u8a66\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n
# \u76e3\u63a7\u78c1\u789fI\/O\r\niostat -x 1 10\r\n\r\n# \u6e05\u7406\u78c1\u789f\u7a7a\u9593\r\nsudo apt-get clean\r\nsudo rm -rf \/var\/log\/*\r\n\r\n# \u4f7f\u7528SSD\u4ee5\u7372\u5f97\u66f4\u5feb\u7684\u8b80\u5beb\u901f\u5ea6\r\n# \u8003\u616e\u8a2d\u7f6eRAID\u4ee5\u63d0\u9ad8\u6027\u80fd<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u7db2\u8def\u5e36\u5bec\u9650\u5236<\/strong><\/h2>\n
\u7db2\u8def\u5e36\u5bec\u9650\u5236\u6703\u56b4\u91cd\u5f71\u97ff\u4f3a\u670d\u5668\u6027\u80fd\uff0c\u5c24\u5176\u5728\u4ee5\u4e0b\u60c5\u6cc1\u4e0b\uff1a<\/p>\n
\n
\u7db2\u8def\u6d41\u91cf\u904e\u9ad8\u3002<\/li>\n
\u7db2\u8def\u8a2d\u5099\u6545\u969c\u3002<\/li>\n
\u7db2\u8def\u914d\u7f6e\u4e0d\u4f73\u3002<\/li>\n<\/ul>\n
\u8981\u89e3\u6c7a\u7db2\u8def\u554f\u984c\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u64cd\u4f5c\uff1a<\/p>\n
# \u76e3\u63a7\u7db2\u8def\u6d41\u91cf\r\niftop\r\n\r\n# \u512a\u5316\u7db2\u8def\u914d\u7f6e\r\nsudo sysctl -w net.core.wmem_max=16777216\r\nsudo sysctl -w net.core.rmem_max=16777216\r\n\r\n# \u5982\u6709\u9700\u8981\uff0c\u5347\u7d1a\u7db2\u8def\u5e36\u5bec\u6216\u8a2d\u5099<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u8cc7\u6599\u5eab\u6027\u80fd\u554f\u984c<\/strong><\/h2>\n
\u5982\u679c\u8cc7\u6599\u5eab\u672a\u5f97\u5230\u9069\u7576\u512a\u5316\uff0c\u53ef\u80fd\u6210\u70ba\u74f6\u9838\u3002\u5e38\u898b\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n
\n
\u8cc7\u6599\u5eab\u67e5\u8a62\u6548\u7387\u4f4e\u4e0b\u3002<\/li>\n
\u7f3a\u5c11\u8cc7\u6599\u5eab\u7d22\u5f15\u3002<\/li>\n
\u9023\u63a5\u6c60\u914d\u7f6e\u4e0d\u7576\u3002<\/li>\n<\/ul>\n
\u8981\u63d0\u9ad8\u8cc7\u6599\u5eab\u6027\u80fd\uff0c\u8acb\u8003\u616e\u4ee5\u4e0b\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n
# \u512a\u5316\u8cc7\u6599\u5eab\u67e5\u8a62\r\nEXPLAIN SELECT * FROM your_table WHERE your_condition;\r\n\r\n# \u6dfb\u52a0\u5fc5\u8981\u7684\u7d22\u5f15\r\nCREATE INDEX idx_your_column ON your_table(your_column);\r\n\r\n# \u914d\u7f6e\u8cc7\u6599\u5eab\u9023\u63a5\u6c60\r\n# \u4f8b\u5982\uff0c\u5728PostgreSQL\u914d\u7f6e\u6587\u4ef6\u4e2d\r\nmax_connections = 100\r\nshared_buffers = 128MB<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u61c9\u7528\u7a0b\u5f0f\u554f\u984c<\/strong><\/h2>\n
\u61c9\u7528\u7a0b\u5f0f\u7d1a\u554f\u984c\u4e5f\u6703\u5c0e\u81f4\u4f3a\u670d\u5668\u5361\u9813\u3002\u5e38\u898b\u554f\u984c\u5305\u62ec\uff1a<\/p>\n
\n
\u61c9\u7528\u7a0b\u5f0f\u4ee3\u78bc\u4e2d\u7684\u6027\u80fd\u74f6\u9838\u3002<\/li>\n
\u904e\u591a\u7684\u65e5\u8a8c\u8a18\u9304\u3002<\/li>\n
\u61c9\u7528\u7a0b\u5f0f\u914d\u7f6e\u4e0d\u7576\u3002<\/li>\n<\/ul>\n
\u8981\u89e3\u6c7a\u61c9\u7528\u7a0b\u5f0f\u554f\u984c\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u64cd\u4f5c\uff1a<\/p>\n
# \u9032\u884c\u6027\u80fd\u6e2c\u8a66\r\n# \u4f7f\u7528Apache JMeter\u7b49\u5de5\u5177\u9032\u884c\u8ca0\u8f09\u6e2c\u8a66\r\n\r\n# \u6e1b\u5c11\u904e\u591a\u7684\u65e5\u8a8c\u8a18\u9304\r\n# \u5728Python\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u8a2d\u7f6e\u9069\u7576\u7684\u65e5\u8a8c\u7d1a\u5225\r\nimport logging\r\nlogging.basicConfig(level=logging.WARNING)\r\n\r\n# \u8abf\u6574\u61c9\u7528\u7a0b\u5f0f\u914d\u7f6e\r\n# \u78ba\u4fdd\u914d\u7f6e\u9069\u5408\u7576\u524d\u7684\u8ca0\u8f09\u60c5\u6cc1<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u64cd\u4f5c\u7cfb\u7d71\u914d\u7f6e\u932f\u8aa4<\/strong><\/h2>\n
\u64cd\u4f5c\u7cfb\u7d71\u914d\u7f6e\u932f\u8aa4\u53ef\u80fd\u5c0e\u81f4\u4f3a\u670d\u5668\u6548\u7387\u4f4e\u4e0b\u3002\u5e38\u898b\u554f\u984c\u5305\u62ec\uff1a<\/p>\n
\n
\u8cc7\u6e90\u9650\u5236\u8a2d\u7f6e\u904e\u4f4e\u3002<\/li>\n
\u5167\u6838\u53c3\u6578\u4e0d\u6b63\u78ba\u3002<\/li>\n<\/ul>\n
\u8981\u512a\u5316\u64cd\u4f5c\u7cfb\u7d71\uff0c\u8acb\u5617\u8a66\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n
# \u8abf\u6574\u8cc7\u6e90\u9650\u5236\r\nulimit -n 4096\r\n\r\n# \u914d\u7f6e\u5167\u6838\u53c3\u6578\u4ee5\u63d0\u9ad8\u6027\u80fd\r\nsudo sysctl -w net.ipv4.tcp_fin_timeout=30\r\nsudo sysctl -w net.ipv4.tcp_keepalive_time=300<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u786c\u9ad4\u6545\u969c<\/strong><\/h2>\n
\u786c\u9ad4\u6545\u969c\u53ef\u80fd\u5c0e\u81f4\u56b4\u91cd\u7684\u4f3a\u670d\u5668\u5361\u9813\u3002\u5e38\u898b\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n
\n
\u4f3a\u670d\u5668\u786c\u9ad4\u8001\u5316\u3002<\/li>\n
\u5143\u4ef6\u6545\u969c\uff08\u5982\u5167\u5b58\u689d\u3001\u786c\u789f\uff09\u3002<\/li>\n<\/ul>\n
\u8981\u9810\u9632\u548c\u89e3\u6c7a\u786c\u9ad4\u554f\u984c\uff0c\u8acb\u8003\u616e\u4ee5\u4e0b\u63aa\u65bd\uff1a<\/p>\n
# \u5b9a\u671f\u9032\u884c\u786c\u9ad4\u8a3a\u65b7\r\n# \u4f7f\u7528memtest86\u7b49\u5de5\u5177\u9032\u884c\u5167\u5b58\u6e2c\u8a66\r\n\r\n# \u66f4\u63db\u6545\u969c\u6216\u8001\u5316\u7684\u786c\u9ad4\r\n# \u8003\u616e\u5347\u7d1a\u5230\u66f4\u65b0\u3001\u66f4\u53ef\u9760\u7684\u5143\u4ef6\r\n\r\n# \u70ba\u4e86\u7372\u5f97\u9ad8\u6027\u80fd\u548c\u53ef\u9760\u7684\u8a2d\u7f6e\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u9999\u6e2f\u4f3a\u670d\u5668<\/strong>\u8a17\u7ba1\u670d\u52d9<\/code><\/pre>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u7e3d\u7d50<\/strong><\/h2>\n
\u4f3a\u670d\u5668\u5361\u9813\u53ef\u80fd\u7531\u591a\u7a2e\u539f\u56e0\u5f15\u8d77\uff0c\u5305\u62ec\u9ad8CPU\u4f7f\u7528\u7387\u3001\u5167\u5b58\u4e0d\u8db3\u3001\u78c1\u789fI\/O\u74f6\u9838\u3001\u7db2\u8def\u9650\u5236\u3001\u8cc7\u6599\u5eab\u6027\u80fd\u554f\u984c\u3001\u61c9\u7528\u7a0b\u5f0f\u554f\u984c\u3001\u64cd\u4f5c\u7cfb\u7d71\u914d\u7f6e\u932f\u8aa4\u548c\u786c\u9ad4\u6545\u969c\u3002\u901a\u904e\u7406\u89e3\u9019\u4e9b\u5e38\u898b\u539f\u56e0\u4e26\u5be6\u65bd\u63d0\u4f9b\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u60a8\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u4f3a\u670d\u5668\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u5b9a\u671f\u7dad\u8b77\u548c\u512a\u5316\u662f\u9632\u6b62\u4f3a\u670d\u5668\u5361\u9813\u7684\u95dc\u9375\u3002\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u9999\u6e2f\u4f3a\u670d\u5668\u8a17\u7ba1\u670d\u52d9\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":2,"featured_media":13577,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[2416,2284,1242],"class_list":["post-13591","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-tc","tag-server-lag-tc","tag-server-optimization-tc","tag-server-performance-tc"],"acf":[],"yoast_head":"\n