{"id":52165,"date":"2024-10-09T00:21:18","date_gmt":"2024-10-08T16:21:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/52165\/"},"modified":"2024-11-14T10:40:07","modified_gmt":"2024-11-14T02:40:07","slug":"ubuntu-%e7%92%b0%e5%a2%83%e4%b8%8b%e6%b8%ac%e8%a9%a6-cache-%e5%a4%a7%e5%b0%8f%e4%b8%a6%e6%a0%a1%e9%a9%97","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/52165\/","title":{"rendered":"Ubuntu \u74b0\u5883\u4e0b\u6e2c\u8a66 Cache \u5927\u5c0f\u4e26\u6821\u9a57"},"content":{"rendered":"

Ubuntu \u74b0\u5883\u4e0b\u6e2c\u8a66 Cache \u5927\u5c0f\u4e26\u6821\u9a57<\/h1>\n

\u5728\u73fe\u4ee3\u8a08\u7b97\u74b0\u5883\u4e2d\uff0cCache \u7684\u5927\u5c0f\u548c\u6548\u80fd\u5c0d\u65bc\u7cfb\u7d71\u7684\u6574\u9ad4\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528 Ubuntu \u4f5c\u696d\u7cfb\u7d71\u7684\u4f3a\u670d\u5668\u4e0a\uff0c\u4e86\u89e3\u5982\u4f55\u6e2c\u8a66\u548c\u6821\u9a57 Cache \u5927\u5c0f\u53ef\u4ee5\u5e6b\u52a9\u7cfb\u7d71\u7ba1\u7406\u54e1\u512a\u5316\u61c9\u7528\u7a0b\u5f0f\u7684\u6548\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 Ubuntu \u74b0\u5883\u4e2d\u6e2c\u8a66 Cache \u5927\u5c0f\u4e26\u9032\u884c\u6821\u9a57\u3002<\/p>\n

\u4ec0\u9ebc\u662f Cache\uff1f<\/h2>\n

Cache \u662f\u4e00\u7a2e\u5feb\u901f\u5b58\u53d6\u7684\u8a18\u61b6\u9ad4\uff0c\u7528\u65bc\u66ab\u6642\u5132\u5b58\u7d93\u5e38\u4f7f\u7528\u7684\u6578\u64da\uff0c\u4ee5\u63d0\u9ad8\u7cfb\u7d71\u7684\u6548\u80fd\u3002\u7576 CPU \u9700\u8981\u8b80\u53d6\u6578\u64da\u6642\uff0c\u9996\u5148\u6703\u6aa2\u67e5 Cache \u4e2d\u662f\u5426\u5b58\u5728\u8a72\u6578\u64da\uff0c\u5982\u679c\u5b58\u5728\uff0c\u5247\u76f4\u63a5\u5f9e Cache \u4e2d\u8b80\u53d6\uff0c\u9019\u6a23\u53ef\u4ee5\u5927\u5e45\u6e1b\u5c11\u5b58\u53d6\u6642\u9593\u3002<\/p>\n

\u6e2c\u8a66 Cache \u5927\u5c0f<\/h2>\n

\u5728 Ubuntu \u74b0\u5883\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u5de5\u5177\u4f86\u6e2c\u8a66 Cache \u7684\u5927\u5c0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528 \/proc\/cpuinfo<\/h3>\n

\u53ef\u4ee5\u901a\u904e\u67e5\u770b \/proc\/cpuinfo \u6587\u4ef6\u4f86\u7372\u53d6 CPU Cache \u7684\u76f8\u95dc\u4fe1\u606f\u3002\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n

cat \/proc\/cpuinfo | grep -i cache<\/code><\/pre>\n
\u9019\u5c07\u986f\u793a\u6bcf\u500b CPU \u6838\u5fc3\u7684 Cache \u5927\u5c0f\uff0c\u5305\u62ec L1\u3001L2 \u548c L3 Cache \u7684\u5927\u5c0f\u3002<\/p>\n
2. \u4f7f\u7528 lscpu \u547d\u4ee4<\/h3>\n
lscpu \u662f\u4e00\u500b\u986f\u793a CPU \u67b6\u69cb\u4fe1\u606f\u7684\u547d\u4ee4\uff0c\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u7372\u53d6 Cache \u7684\u8a73\u7d30\u4fe1\u606f\uff1a<\/p>\n
lscpu<\/code><\/pre>\n
\u5728\u8f38\u51fa\u7684\u7d50\u679c\u4e2d\uff0c\u60a8\u53ef\u4ee5\u627e\u5230 L1d\u3001L1i\u3001L2 \u548c L3 Cache \u7684\u5927\u5c0f\u3002<\/p>\n
3. \u4f7f\u7528 dmidecode \u547d\u4ee4<\/h3>\n
dmidecode \u662f\u4e00\u500b\u7528\u65bc\u63d0\u53d6\u7cfb\u7d71\u786c\u9ad4\u4fe1\u606f\u7684\u5de5\u5177\u3002\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u7372\u53d6 Cache \u7684\u8a73\u7d30\u4fe1\u606f\uff1a<\/p>\n
sudo dmidecode --type cache<\/code><\/pre>\n
\u9019\u5c07\u986f\u793a\u7cfb\u7d71\u4e2d\u6240\u6709 Cache \u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u5927\u5c0f\u548c\u985e\u578b\u3002<\/p>\n
\u6821\u9a57 Cache \u6548\u80fd<\/h2>\n
\u6e2c\u8a66 Cache \u5927\u5c0f\u5f8c\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u6821\u9a57\u5176\u6548\u80fd\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4e00\u4e9b\u57fa\u6e96\u6e2c\u8a66\u5de5\u5177\u4f86\u5be6\u73fe\u3002<\/p>\n
1. \u4f7f\u7528 sysbench<\/h3>\n
sysbench \u662f\u4e00\u500b\u591a\u7528\u9014\u7684\u57fa\u6e96\u6e2c\u8a66\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u6e2c\u8a66 CPU\u3001\u8a18\u61b6\u9ad4\u548c I\/O \u6027\u80fd\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88dd sysbench\uff1a<\/p>\n
sudo apt-get install sysbench<\/code><\/pre>\n
\u7136\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u6e2c\u8a66\u8a18\u61b6\u9ad4\u7684\u6548\u80fd\uff1a<\/p>\n
sysbench --test=memory --memory-block-size=1K --memory-total-size=10G run<\/code><\/pre>\n
\u9019\u5c07\u6e2c\u8a66\u8a18\u61b6\u9ad4\u7684\u8b80\u53d6\u548c\u5beb\u5165\u6548\u80fd\uff0c\u4e26\u53ef\u4ee5\u9593\u63a5\u53cd\u6620 Cache \u7684\u6548\u80fd\u3002<\/p>\n
2. \u4f7f\u7528 cachegrind<\/h3>\n
cachegrind \u662f Valgrind \u7684\u4e00\u500b\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u5206\u6790\u7a0b\u5f0f\u7684 Cache \u4f7f\u7528\u60c5\u6cc1\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88dd Valgrind\uff1a<\/p>\n
sudo apt-get install valgrind<\/code><\/pre>\n
\u7136\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u904b\u884c\u60a8\u7684\u7a0b\u5f0f\u4e26\u5206\u6790 Cache \u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n
valgrind --tool=cachegrind .\/your_program<\/code><\/pre>\n
\u9019\u5c07\u751f\u6210\u4e00\u500b Cache \u4f7f\u7528\u5831\u544a\uff0c\u5e6b\u52a9\u60a8\u4e86\u89e3\u7a0b\u5f0f\u7684 Cache \u6548\u80fd\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u5728 Ubuntu \u74b0\u5883\u4e2d\u6e2c\u8a66\u548c\u6821\u9a57 Cache \u5927\u5c0f\u662f\u512a\u5316\u7cfb\u7d71\u6027\u80fd\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528 \/proc\/cpuinfo\u3001lscpu \u548c dmidecode \u7b49\u5de5\u5177\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6 Cache \u7684\u5927\u5c0f\u4fe1\u606f\u3002\u800c\u4f7f\u7528 sysbench \u548c cachegrind \u7b49\u57fa\u6e96\u6e2c\u8a66\u5de5\u5177\uff0c\u5247\u53ef\u4ee5\u6709\u6548\u5730\u8a55\u4f30 Cache \u7684\u6548\u80fd\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5e6b\u52a9\u7cfb\u7d71\u7ba1\u7406\u54e1\u512a\u5316\u4f3a\u670d\u5668\u6027\u80fd\uff0c\u9084\u80fd\u63d0\u9ad8\u61c9\u7528\u7a0b\u5f0f\u7684\u97ff\u61c9\u901f\u5ea6\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u80fd\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f \u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6e2c\u8a66 Ubuntu \u74b0\u5883\u4e0b\u7684 Cache \u5927\u5c0f\u4e26\u9032\u884c\u6821\u9a57\uff0c\u78ba\u4fdd\u7cfb\u7d71\u6027\u80fd\u6700\u4f73\u5316\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5e8f\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-52165","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/52165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=52165"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/52165\/revisions"}],"predecessor-version":[{"id":52166,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/52165\/revisions\/52166"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=52165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=52165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=52165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}