[vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u5728\u5c08\u7528\u4f3a\u670d\u5668<\/a>\u7ba1\u7406\u7684\u4e16\u754c\u4e2d\uff0c\u78c1\u789fI\/O\u6548\u80fd<\/strong>\u5728\u78ba\u4fdd\u61c9\u7528\u7a0b\u5f0f\u7684\u6700\u4f73\u56de\u61c9\u6027\u548c\u4f7f\u7528\u8005\u6eff\u610f\u5ea6\u65b9\u9762\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u7121\u8ad6\u60a8\u662f\u5728\u5167\u90e8\u904b\u884c\u4f3a\u670d\u5668\u3001\u4f7f\u7528\u4f3a\u670d\u5668\u8a17\u7ba1\u670d\u52d9\u9084\u662f\u4f9d\u8cf4\u4f3a\u670d\u5668\u79df\u7528\u4f9b\u61c9\u5546\uff0c\u4e86\u89e3\u5982\u4f55\u8b58\u5225\u3001\u6392\u9664\u6545\u969c\u548c\u89e3\u6c7a\u78c1\u789fI\/O\u74f6\u9838\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5728\u9019\u672c\u5168\u9762\u7684\u6307\u5357\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u9019\u4e9b\u554f\u984c\u7684\u5e38\u898b\u539f\u56e0\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u4ee5\u5e6b\u52a9\u60a8\u512a\u5316\u4f3a\u670d\u5668\u7684\u5132\u5b58\u5b50\u7cfb\u7d71\u3002<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u5728\u6df1\u5165\u63a2\u8a0e\u6545\u969c\u6392\u9664\u6280\u8853\u4e4b\u524d\uff0c\u8b93\u6211\u5011\u900f\u904e\u8a0e\u8ad6\u4f3a\u670d\u5668\u4e0a\u4e0b\u6587\u4e2d\u7684I\/O\u6db5\u84cb\u7684\u5167\u5bb9\u4f86\u5efa\u7acb\u7d2e\u5be6\u7684\u57fa\u790e\u3002I\/O\u662f\u6307\u4f3a\u670d\u5668\u5132\u5b58\u5b50\u7cfb\u7d71\u57f7\u884c\u7684\u8f38\u5165\/\u8f38\u51fa\u64cd\u4f5c\uff0c\u5176\u4e2d\u6d89\u53ca\u5f9e\u5be6\u9ad4\u78c1\u789f\u6216\u865b\u64ec\u78c1\u789f\u6620\u50cf\u8b80\u53d6\u8cc7\u6599\u548c\u5411\u5176\u5beb\u5165\u8cc7\u6599\u3002\u9019\u4e9bI\/O\u64cd\u4f5c\u7684\u6548\u7387\u548c\u901f\u5ea6\u76f4\u63a5\u5f71\u97ff\u4f3a\u670d\u5668\u53ca\u5176\u8a17\u7ba1\u61c9\u7528\u7a0b\u5f0f\u7684\u6574\u9ad4\u6548\u80fd\u3002\u7de9\u6162\u6216\u53d7\u5230\u74f6\u9838\u9650\u5236\u7684\u78c1\u789fI\/O\u53ef\u80fd\u5c0e\u81f4\u61c9\u7528\u7a0b\u5f0f\u56de\u61c9\u6642\u9593\u7de9\u6162\u3001\u541e\u5410\u91cf\u964d\u4f4e\u4ee5\u53ca\u6b21\u512a\u7684\u4f7f\u7528\u8005\u9ad4\u9a57\u3002<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u70ba\u4e86\u6709\u6548\u5730\u6392\u9664\u6545\u969c\uff0c\u4e86\u89e3\u53ef\u80fd\u5c0e\u81f4\u6548\u80fd\u4e0b\u964d\u7684\u5e38\u898b\u56e0\u7d20\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5178\u578b\u7684\u7f6a\u9b41\u798d\u9996\uff1a<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u6709\u4e86\u5c0d\u5e38\u898b\u539f\u56e0\u7684\u7406\u89e3\uff0c\u8b93\u6211\u5011\u63a2\u7d22\u6709\u6548\u7684\u6545\u969c\u6392\u9664\u6280\u8853\u4f86\u8b58\u5225\u548c\u8a3a\u65b7I\/O\u554f\u984c\uff1a<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u4e00\u65e6\u60a8\u900f\u904e\u5fb9\u5e95\u7684\u6545\u969c\u6392\u9664\u78ba\u5b9a\u4e86\u78c1\u789fI\/O\u554f\u984c\u7684\u6839\u672c\u539f\u56e0\uff0c\u5c31\u53ef\u4ee5\u5be6\u65bd\u512a\u5316\u6280\u8853\u4f86\u63d0\u9ad8\u6548\u80fd\uff1a<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u512a\u5316\u4f3a\u670d\u5668\u78c1\u789fI\/O\u6548\u80fd<\/strong>\u662f\u78ba\u4fdd\u4f3a\u670d\u5668\u57fa\u790e\u8a2d\u65bd\u6574\u9ad4\u6548\u7387\u3001\u56de\u61c9\u80fd\u529b\u548c\u53ef\u9760\u6027\u7684\u95dc\u9375\u65b9\u9762\u3002\u900f\u904e\u4e86\u89e3\u554f\u984c\u7684\u5e38\u898b\u539f\u56e0\u4e26\u61c9\u7528\u6709\u6548\u7684\u6545\u969c\u6392\u9664\u548c\u512a\u5316\u6280\u8853\uff0c\u60a8\u53ef\u4ee5\u4e3b\u52d5\u8b58\u5225\u548c\u89e3\u6c7a\u74f6\u9838\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5f0f\u6548\u80fd\u548c\u4f7f\u7528\u8005\u6eff\u610f\u5ea6\u3002<\/p>\n \u8acb\u8a18\u4f4f\u5b9a\u671f\u76e3\u63a7\u78c1\u789fI\/O\u6307\u6a19\uff0c\u6cbb\u7642\u6839\u672c\u539f\u56e0\u800c\u4e0d\u50c5\u50c5\u662f\u75c7\u72c0\uff0c\u4e26\u7dad\u8b77\u914d\u7f6e\u826f\u597d\u4e14\u7dad\u8b77\u826f\u597d\u7684\u5132\u5b58\u5b50\u7cfb\u7d71\u3002\u900f\u904e\u9075\u5faa\u6700\u4f73\u5be6\u8e10\u4e26\u5728\u6548\u80fd\u512a\u5316\u5de5\u4f5c\u4e2d\u4fdd\u6301\u4e3b\u52d5\uff0c\u60a8\u53ef\u4ee5\u91cb\u653e\u4f3a\u670d\u5668\u529f\u80fd\u7684\u5168\u90e8\u6f5b\u529b\uff0c\u4e26\u70ba\u4f7f\u7528\u8005\u63d0\u4f9b\u7121\u7e2b\u4e14\u9ad8\u6548\u80fd\u7684\u8a08\u7b97\u9ad4\u9a57\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\u4e86\u89e3\u4f3a\u670d\u5668\u78c1\u789fI\/O<\/strong><\/h2>\n
\u78c1\u789fI\/O\u554f\u984c\u7684\u5e38\u898b\u539f\u56e0<\/strong><\/h2>\n
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\u78c1\u789fI\/O\u554f\u984c\u7684\u6545\u969c\u6392\u9664<\/strong><\/h2>\n
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iostat<\/code>\u548ciotop<\/code>\uff0c\u6216Windows\u6548\u80fd\u76e3\u8996\u5668\uff0c\u4ee5\u6536\u96c6\u6709\u95dc\u78c1\u789fI\/O\u6d3b\u52d5\u7684\u5373\u6642\u6307\u6a19\u3002\u9019\u4e9b\u5de5\u5177\u63d0\u4f9b\u4e86\u6709\u95dcI\/O\u7b49\u5f85\u6642\u9593\u3001\u541e\u5410\u91cf\u548c\u4f47\u5217\u6df1\u5ea6\u7684\u898b\u89e3\uff0c\u5e6b\u52a9\u60a8\u8b58\u5225\u74f6\u9838\u548c\u7570\u5e38\u884c\u70ba\u3002<\/li>\n<\/ul>\n# \u793a\u4f8b\uff1a\u5728Linux\u4e0a\u4f7f\u7528iostat\u76e3\u63a7\u78c1\u789fI\/O\r\n$ iostat -xm 1<\/code><\/pre>\n<\/div>\n\n
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lsof<\/code>\u6216fuser<\/code>\u7b49\u5de5\u5177\u4f86\u8b58\u5225\u7522\u751f\u904e\u591aI\/O\u7684\u7a0b\u5e8f\u6216\u865b\u64ec\u6a5f\u5668\u3002\u900f\u904e\u67e5\u660e\u7f6a\u9b41\u798d\u9996\uff0c\u60a8\u53ef\u4ee5\u9032\u4e00\u6b65\u8abf\u67e5\u4e26\u63a1\u53d6\u9069\u7576\u7684\u63aa\u65bd\uff0c\u4f8b\u5982\u512a\u5316\u61c9\u7528\u7a0b\u5f0f\u7a0b\u5f0f\u78bc\u3001\u8abf\u6574\u865b\u64ec\u6a5f\u5668\u8cc7\u6e90\u5206\u914d\u6216\u91cd\u65b0\u5206\u914d\u5de5\u4f5c\u8ca0\u8f09\u3002<\/li>\n<\/ul>\n<\/div>\n\n
\u512a\u5316\u4f3a\u670d\u5668\u78c1\u789fI\/O\u6548\u80fd<\/strong><\/h2>\n
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noop<\/code>\u6216deadline<\/code>\u6392\u7a0b\u5668\u975e\u5e38\u9069\u5408SSD\uff0c\u800ccfq<\/code>\uff08\u5b8c\u5168\u516c\u5e73\u4f47\u5217\uff09\u6392\u7a0b\u5668\u901a\u5e38\u63a8\u85a6\u7528\u65bcLinux\u7cfb\u7d71\u4e0a\u7684\u50b3\u7d71HDD\u3002<\/li>\n<\/ul>\n# \u793a\u4f8b\uff1a\u5728Linux\u4e0a\u66f4\u6539I\/O\u6392\u7a0b\u5668 \r\n$ echo noop > \/sys\/block\/sda\/queue\/scheduler<\/code><\/pre>\n<\/div>\n\n
\u7d50\u8ad6<\/strong><\/h2>\n