{"id":1333,"date":"2020-06-27T09:02:45","date_gmt":"2020-06-27T09:02:45","guid":{"rendered":"https:\/\/www.ipcpu.com\/?p=1333"},"modified":"2020-11-27T09:03:23","modified_gmt":"2020-11-27T09:03:23","slug":"redis-memory","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2020\/06\/redis-memory\/","title":{"rendered":"redis\u5185\u5b58\u5206\u914d\u5668\u548c\u5185\u5b58\u788e\u7247\u6e05\u7406"},"content":{"rendered":"

\u4e00\u3001redis\u5185\u5b58\u5206\u914d\u5668<\/h2>\n

Redis \u662f\u4e00\u79cd\u5185\u5b58\u6570\u636e\u5e93\uff0c\u5c06\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u8bfb\u5199\u6548\u7387\u8981\u6bd4\u4f20\u7edf\u7684\u5c06\u6570\u636e\u4fdd\u5b58\u5728\u78c1\u76d8\u4e0a\u7684\u6570\u636e\u5e93\u8981\u5feb\u5f88\u591a\u3002Redis\u5e76\u6ca1\u6709\u81ea\u5df1\u5b9e\u73b0\u5185\u5b58\u6c60\uff0c\u5229\u7528\u4e86\u7cfb\u7edf\u5185\u5b58\u5206\u914d\u5668\uff0c\u6240\u4ee5\u7cfb\u7edf\u5185\u5b58\u5206\u914d\u5668\u7684\u6027\u80fd\u53ca\u788e\u7247\u7387\u4f1a\u5bf9Redis\u9020\u6210\u4e00\u4e9b\u6027\u80fd\u4e0a\u7684\u5f71\u54cd\u3002<\/p>\n

Redis\u5728\u7f16\u8bd1\u65f6\u4fbf\u4f1a\u6307\u5b9a\u5185\u5b58\u5206\u914d\u5668\uff1b\u5185\u5b58\u5206\u914d\u5668\u53ef\u4ee5\u662f libc \u3001jemalloc\u6216\u8005tcmalloc\uff0c\u9ed8\u8ba4\u662fjemalloc\u3002\u5982\u679c\u662fRPM\u5b89\u88c5\u7684\u8bdd\uff0c\u4e00\u822c\u90fd\u662fjemalloc\u3002<\/p>\n

\u5982\u679c\u81ea\u884c\u7f16\u8bd1\u7684\u8bdd\uff0cjemalloc\u6e90\u7801\u5305\u5728redis\u6e90\u7801\u7684deps\/jemalloc\u76ee\u5f55\uff0c\u5982\u679c\u9047\u5230\"error: jemalloc\/jemalloc.h: No such file or directory\"\uff0c\u9700\u8981\u8fdb\u5165deps\/jemalloc\u76ee\u5f55make\u4e00\u4e0b\uff0c\u4e0d\u8981\u6309\u7167\u7f51\u4e0a\u7684\u8bf4\u6cd5\u76f4\u63a5\u4f7f\u7528\"make MALLOC=libc\"\u3002<\/p>\n

\u4e0b\u56fe\u5c31\u662f\u751f\u4ea7\u73af\u5883\u4f7f\u7528libc\u5185\u5b58\u5206\u914d\u5668\u9020\u6210\u788e\u7247\u7387\u8fc7\u9ad8\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u4e0d\u5f97\u4e0d\u91cd\u65b0\u7f16\u8bd1\u66f4\u6362\u4e86jemalloc\u5185\u5b58\u5206\u914d\u5668\u3002
\n<\/p>\n

\u4e8c\u3001\u5185\u5b58\u788e\u7247<\/h2>\n

Redis \u8fdb\u7a0b\u5185\u6d88\u8017\u4e3b\u8981\u5305\u62ec\uff1a\u81ea\u8eab\u5185\u5b58 + \u5bf9\u8c61\u5185\u5b58 + \u7f13\u51b2\u5185\u5b58 + \u5185\u5b58\u788e\u7247\uff0c\u5176\u4e2d Redis \u7a7a\u8fdb\u7a0b\u81ea\u8eab\u5185\u5b58\u6d88\u8017\u975e\u5e38\u5c11\uff0c\u901a\u5e38 used_memory_rss \u5728 3MB \u5de6\u53f3\u65f6\uff0cused_memory \u4e00\u822c\u5728 800KB \u5de6\u53f3\uff0c\u4e00\u4e2a\u7a7a\u7684 Redis \u8fdb\u7a0b\u6d88\u8017\u5185\u5b58\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002
\n
\n\u5185\u5b58\u788e\u7247\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\uff0c\u5982\u4e0b<\/p>\n

<\/p>\n

\u4e09\u3001redis\u5185\u5b58\u788e\u7247\u6e05\u7406<\/h2>\n

\u5f53redis\u788e\u7247\u7387\u8fc7\u9ad8\uff0c\u6709\u4ec0\u4e48\u529e\u6cd5\u53ef\u4ee5\u6e05\u7406\u788e\u7247\u5462\uff1f
\n\u5728redis4.0\u4e4b\u524d\u7684\u7248\u672c\uff0c\u597d\u50cf\u6ca1\u4ec0\u4e48\u597d\u65b9\u6cd5\uff0c\u53ea\u80fd\u91cd\u542f\u4e0bredis\u8fdb\u7a0b\uff0c\u57284.0\u4ee5\u540e\uff0credis\u6709\u4e86\u624b\u52a8\u6e05\u7406\u548c\u81ea\u52a8\u6e05\u7406\u7684\u547d\u4ee4\u3002<\/p>\n

\n

\u624b\u52a8\u6e05\u7406<\/p>\n<\/blockquote>\n

\n
memory purge\n#\u4ec5\u96504.0\u4ee5\u4e0a\u5e76\u4e14\u4f7f\u7528\u4e86jemalloc\u5206\u914d\u5668<\/code><\/pre>\n<\/div>\n
\n
\u81ea\u52a8\u6e05\u7406<\/p>\n<\/blockquote>\n
\n
config set  activedefrag yes\n#\u4ec5\u96504.0\u4ee5\u4e0a\u5e76\u4e14\u4f7f\u7528\u4e86jemalloc\u5206\u914d\u5668\n\u57284.0\u548c5.0\u4e2d\u72b6\u6001\u662fEXPERIMENTAL\uff0c6.0\u6210\u719f<\/code><\/pre>\n<\/div>\n
\u53e6\u5916\u4e0e\u81ea\u52a8\u6e05\u7406\u76f8\u5173\u7684\u914d\u7f6e\u6587\u4ef6\u53c2\u6570\u5982\u4e0b<\/p>\n
\n
# \u5f00\u542f\u81ea\u52a8\u5185\u5b58\u788e\u7247\u6574\u7406(\u603b\u5f00\u5173)\nactivedefrag yes\n# \u5f53\u788e\u7247\u8fbe\u5230 100mb \u65f6\uff0c\u5f00\u542f\u5185\u5b58\u788e\u7247\u6574\u7406\nactive-defrag-ignore-bytes 100mb\n# \u5f53\u788e\u7247\u8d85\u8fc7 10% \u65f6\uff0c\u5f00\u542f\u5185\u5b58\u788e\u7247\u6574\u7406\nactive-defrag-threshold-lower 10\n# \u5185\u5b58\u788e\u7247\u8d85\u8fc7 100%\uff0c\u5219\u5c3d\u6700\u5927\u52aa\u529b\u6574\u7406\nactive-defrag-threshold-upper 100\n# \u5185\u5b58\u81ea\u52a8\u6574\u7406\u5360\u7528\u8d44\u6e90\u6700\u5c0f\u767e\u5206\u6bd4\nactive-defrag-cycle-min 25\n# \u5185\u5b58\u81ea\u52a8\u6574\u7406\u5360\u7528\u8d44\u6e90\u6700\u5927\u767e\u5206\u6bd4\nactive-defrag-cycle-max 75<\/code><\/pre>\n<\/div>\n
\u5b98\u65b9\u7684\u9ed8\u8ba4\u8bbe\u7f6e\u662f\uff1a\u5185\u5b58\u788e\u7247\u7387\u5927\u4e8e10%\u4e14\u5185\u5b58\u788e\u7247\u5927\u5c0f\u8d85\u8fc7100mb\u3002 
\nredis\u5728\u5185\u5b58\u788e\u7247\u6574\u7406\u65f6\uff0c\u4f1a\u5360\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u5bfc\u81f4redis\u54cd\u5e94\u6162\uff0c\u56e0\u6b64\u5bf9\u4e8e\u788e\u7247\u6574\u7406\u7684\u65f6\u673a(\u89e6\u53d1\u6761\u4ef6)\u548c\u6574\u7406\u529b\u5ea6(\u8d44\u6e90\u5360\u7528)\u9700\u8981\u4ed4\u7ec6\u659f\u914c\uff0c\u4e0b\u9762\u7684\u751f\u4ea7\u73af\u5883\u914d\u7f6e\u4ec5\u4f9b\u53c2\u8003\uff1a<\/p>\n
\n
active-defrag-ignore-bytes 500mb\nactive-defrag-threshold-lower 50\nactive-defrag-threshold-upper 100\nactive-defrag-cycle-min 5\nactive-defrag-cycle-max 10<\/code><\/pre>\n<\/div>\n
\u6ce8\u610f\uff1a<\/em> 
\nactive-defrag-threshold-lower\u7684\u8ba1\u7b97\u65b9\u6cd5\u548cmem_fragmentation_ratio\u7684\u8ba1\u7b97\u4e0d\u592a\u4e00\u6837\uff0c\u662f\u4ecejemalloc\u7edf\u8ba1\u4e2d\u53d6\u503c\uff0c\u5982\u4e0b\uff0c 
\n 
\njemalloc\u7edf\u8ba1\u503c\u53ef\u4ee5\u4f7f\u7528memory malloc-stats\u547d\u4ee4\u770b\u5230 
\n<\/p>\n
\u53c2\u8003\u8d44\u6599<\/h2>\n
https:\/\/my.oschina.net\/watliu\/blog\/1620666<\/a> 
\nhttps:\/\/zhuanlan.zhihu.com\/p\/67381368 
\nhttp:\/\/remcarpediem.net\/article\/516957d3\/<\/p>\n
\u6765\u81ea\u4e3a\u77e5\u7b14\u8bb0(Wiz)<\/a><\/div>\n
\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » redis\u5185\u5b58\u5206\u914d\u5668\u548c\u5185\u5b58\u788e\u7247\u6e05\u7406<\/a><\/p>","protected":false},"excerpt":{"rendered":"
\u4e00\u3001redis\u5185\u5b58\u5206\u914d\u5668 Redis \u662f\u4e00\u79cd\u5185\u5b58\u6570\u636e\u5e93\uff0c\u5c06\u6570\u636e\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\uff0c\u8bfb\u5199\u6548\u7387\u8981\u6bd4\u4f20\u7edf\u7684\u5c06\u6570\u636e\u4fdd\u5b58\u5728\u78c1\u76d8\u4e0a\u7684\u6570\u636e\u5e93\u8981\u5feb\u5f88\u591a\u3002Redis\u5e76\u6ca1\u6709\u81ea\u5df1\u5b9e\u73b0\u5185\u5b58\u6c60\uff0c\u5229\u7528\u4e86\u7cfb\u7edf\u5185\u5b58\u5206\u914d\u5668\uff0c\u6240\u4ee5\u7cfb\u7edf\u5185\u5b58\u5206\u914d\u5668\u7684\u6027\u80fd\u53ca\u788e\u7247\u7387\u4f1a\u5bf9Redis\u9020\u6210\u4e00\u4e9b\u6027\u80fd\u4e0a\u7684\u5f71\u54cd\u3002 Redis\u5728\u7f16\u8bd1\u65f6\u4fbf\u4f1a\u6307\u5b9a\u5185\u5b58\u5206\u914d\u5668\uff1b\u5185\u5b58\u5206\u914d\u5668\u53ef\u4ee5\u662f libc \u3001jemalloc\u6216\u8005tcmalloc\uff0c\u9ed8\u8ba4\u662fjemalloc\u3002\u5982\u679c\u662fRPM\u5b89\u88c5\u7684\u8bdd\uff0c\u4e00\u822c\u90fd\u662fjemalloc\u3002 \u5982\u679c\u81ea\u884c\u7f16\u8bd1\u7684\u8bdd\uff0cjemalloc\u6e90\u7801\u5305\u5728redis\u6e90\u7801\u7684deps\/jemalloc\u76ee\u5f55\uff0c\u5982\u679c\u9047\u5230”error: jemalloc\/jemalloc.h: No such file or directory”\uff0c\u9700\u8981\u8fdb\u5165deps\/jemalloc\u76ee\u5f55make\u4e00\u4e0b\uff0c\u4e0d\u8981\u6309\u7167\u7f51\u4e0a\u7684\u8bf4\u6cd5\u76f4\u63a5\u4f7f\u7528”make MALLOC=libc”\u3002 \u4e0b\u56fe\u5c31\u662f\u751f\u4ea7\u73af\u5883\u4f7f\u7528libc\u5185\u5b58\u5206\u914d\u5668\u9020\u6210\u788e\u7247\u7387\u8fc7\u9ad8\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u4e0d\u5f97\u4e0d\u91cd\u65b0\u7f16\u8bd1\u66f4\u6362\u4e86jemalloc\u5185\u5b58\u5206\u914d\u5668\u3002 \u4e8c\u3001\u5185\u5b58\u788e\u7247 Redis \u8fdb\u7a0b\u5185\u6d88\u8017\u4e3b\u8981\u5305\u62ec\uff1a\u81ea\u8eab\u5185\u5b58 + \u5bf9\u8c61\u5185\u5b58 + \u7f13\u51b2\u5185\u5b58 + \u5185\u5b58\u788e\u7247\uff0c\u5176\u4e2d Redis \u7a7a\u8fdb\u7a0b\u81ea\u8eab\u5185\u5b58\u6d88\u8017\u975e\u5e38\u5c11\uff0c\u901a\u5e38 used_memory_rss \u5728 3MB \u5de6\u53f3\u65f6\uff0cused_memory \u4e00\u822c\u5728 800KB \u5de6\u53f3\uff0c\u4e00\u4e2a\u7a7a\u7684 Redis \u8fdb\u7a0b\u6d88\u8017\u5185\u5b58\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002 \u5185\u5b58\u788e\u7247\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\uff0c\u5982\u4e0b \u4e09\u3001redis\u5185\u5b58\u788e\u7247\u6e05\u7406 \u5f53redis\u788e\u7247\u7387\u8fc7\u9ad8\uff0c\u6709\u4ec0\u4e48\u529e\u6cd5\u53ef\u4ee5\u6e05\u7406\u788e\u7247\u5462\uff1f \u5728redis4.0\u4e4b\u524d\u7684\u7248\u672c\uff0c\u597d\u50cf\u6ca1\u4ec0\u4e48\u597d\u65b9\u6cd5\uff0c\u53ea\u80fd\u91cd\u542f\u4e0bredis\u8fdb\u7a0b\uff0c\u57284.0\u4ee5\u540e\uff0credis\u6709\u4e86\u624b\u52a8\u6e05\u7406\u548c\u81ea\u52a8\u6e05\u7406\u7684\u547d\u4ee4\u3002 \u624b\u52a8\u6e05\u7406 memory purge #\u4ec5\u96504.0\u4ee5\u4e0a\u5e76\u4e14\u4f7f\u7528\u4e86jemalloc\u5206\u914d\u5668 \u81ea\u52a8\u6e05\u7406 config set activedefrag yes #\u4ec5\u96504.0\u4ee5\u4e0a\u5e76\u4e14\u4f7f\u7528\u4e86jemalloc\u5206\u914d\u5668 \u57284.0\u548c5.0\u4e2d\u72b6\u6001\u662fEXPERIMENTAL\uff0c6.0\u6210\u719f \u53e6\u5916\u4e0e\u81ea\u52a8\u6e05\u7406\u76f8\u5173\u7684\u914d\u7f6e\u6587\u4ef6\u53c2\u6570\u5982\u4e0b # \u5f00\u542f\u81ea\u52a8\u5185\u5b58\u788e\u7247\u6574\u7406(\u603b\u5f00\u5173) activedefrag yes […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[142,44],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1333"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=1333"}],"version-history":[{"count":1,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1333\/revisions"}],"predecessor-version":[{"id":1334,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/1333\/revisions\/1334"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=1333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=1333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=1333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}