{"id":2775,"date":"2014-04-27T23:52:30","date_gmt":"2014-04-27T15:52:30","guid":{"rendered":"http:\/\/www.heitao.me\/?p=2775"},"modified":"2014-04-28T00:14:18","modified_gmt":"2014-04-27T16:14:18","slug":"linux%e6%95%99%e7%a8%8b-%e6%b5%8b%e8%af%95-linux-%e6%9c%8d%e5%8a%a1%e5%99%a8-io-%e6%80%a7%e8%83%bd%e7%9a%84%e5%87%a0%e7%a7%8d%e6%96%b9%e6%b3%95-2","status":"publish","type":"post","link":"https:\/\/heitao.me\/?p=2775","title":{"rendered":"#Linux\u6559\u7a0b – \u6d4b\u8bd5Linux\u670d\u52a1\u5668I\/O\u6027\u80fd\u7684\u4e24\u79cd\u65b9\u6cd5"},"content":{"rendered":"

<\/a><\/font> <\/p>\n

\u591a\u6570\u670b\u53cb\u5728\u4e70\u5230Linux\u7cfb\u7edf\u7684VPS\u4ee5\u540e\uff0c\u5e38\u5e38\u5bf9VPS\u7684\u6027\u80fd\u4ea7\u751f\u5174\u8da3\uff0c\u901a\u8fc7\u5bf9VPS\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5\uff0c\u4e0d\u4ec5\u80fd\u591f\u4e86\u89e3\u6240\u7528VPS\u7684\u6027\u80fd\u662f\u5426\u80fd\u5bf9\u5f97\u8d77\u4ef7\u683c\uff0c\u4e5f\u662f\u80fd\u591f\u4ece\u4fa7\u9762\u53cd\u6620\u670d\u52a1\u5668\u7684\u6574\u4f53\u72b6\u51b5\uff0c\u4f30\u7b97\u51fa\u4e3b\u673a\u5546\u662f\u5426\u5b58\u5728\u6ee5\u7528\u3002<\/font> <\/p>\n

\u5bf9\u4e8eVPS\u7684\u6027\u80fd\u8bc4\u6d4b\uff0c\u8dd1\u5206\u5f53\u7136\u53ef\u4ee5\u76f8\u5bf9\u5168\u9762\u7684\u628a\u6027\u80fd\u5c55\u73b0\u51fa\u6765\uff0c\u4f46\u8dd1\u5206\u7684\u65f6\u95f4\u8fc7\u957f\uff0c\u800c\u4e14\u7279\u522b\u8d39CPU\uff0c\u6240\u4ee5\uff0c\u6d4b\u8bd5\u786c\u76d8I\/O\u7684\u6027\u80fd\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\uff0c\u5f53\u7136\u4e00\u53f0VPS\u7684\u4ef7\u683c\u5e76\u4e0d\u80fd\u4ec5\u4ec5\u7528I\/O\u7684\u6027\u80fd\u6765\u6982\u62ec\uff0c\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4ec5\u4ec5\u662f\u5bf9I\/O\u7684\u6d4b\u8bd5\u5217\u4e3e\u4e00\u4e9b\u65b9\u6cd5\uff0cVPS\u7684\u4ef7\u683c\u8fd8\u9700\u8981\u7efc\u5408\u8003\u91cf\u3002<\/font> <\/p>\n

\u6d4b\u8bd5 I\/O \u7684\u65b9\u6cd5\u5e38\u89c1\u7684\u5c31\u6709\u597d\u51e0\u79cd\uff0c\u5c24\u5176\u662f DD \u6d4b\u8bd5\u5b58\u5728\u8f83\u5927\u5dee\u5f02\uff01\u5728\u8fd9\u91cc\u4ecb\u7ecd\u4e00\u4e9bDD\u6d4b\u8bd5\u7684\u547d\u4ee4\u4ee5\u53ca\u533a\u522b\u3002<\/font> <\/p>\n

DD\u6d4b\u8bd5<\/font><\/strong> <\/p>\n

DD\u6d4b\u8bd5\u5176\u5b9e\u4ec5\u4ec5\u662f\u5bf9\u6587\u4ef6\u7684\u8bfb\u5199\u6d4b\u8bd5\u7f62\u4e86\uff0c\u6b64\u65b9\u6cd5\u76f8\u5bf9\u4e8e\u4f20\u7edf\u673a\u68b0\u786c\u76d8\u6216\u8bb8\u6709\u4e9b\u53c2\u8003\u4ef7\u503c\u4f46\u662f\u5bf9\u4e8eSSD\u786c\u76d8\u5c31\u4e0d\u89c1\u5f97\u4e86\u3002<\/font> <\/p>\n

\n

dd bs=64k count=4k if=\/dev\/zero of=test
<\/font>\u6700\u6ca1\u6709\u53c2\u8003\u4ef7\u503c\uff0c\u5f88\u591a\u5783\u573eVPS\u90fd\u4f1a\u7528\u8fd9\u4e2a<\/font><\/p>\n<\/blockquote>\n

\n

dd bs=64k count=4k if=\/dev\/zero of=test; sync
<\/font>\u4e0d\u600e\u4e48\u4e25\u683c<\/font><\/p>\n<\/blockquote>\n

\n

dd bs=64k count=4k if=\/dev\/zero of=test conv=fdatasync
<\/font>\u56fd\u5916\u6807\u51c6\uff0c\u4e0d\u600e\u4e48\u4e25\u683c<\/font><\/p>\n<\/blockquote>\n

\n

dd bs=64k count=4k if=\/dev\/zero of=test oflag=dsync
<\/font>\u56fd\u5185\u6807\u51c6\uff0c\u4e25\u683c\uff0c\u6709\u53c2\u8003\u4ef7\u503c<\/font><\/p>\n<\/blockquote>\n

\u89e3\u91ca\u4e00\u4e0b\uff0c\u7b2c\u4e00\u6761DD\u547d\u4ee4\u662f\u6700\u6ca1\u6709\u4ec0\u4e48\u53c2\u8003\u4ef7\u503c\u7684\uff0c\u6b64\u65b9\u6cd5\u548c\u6700\u540e\u4e00\u6761DD\u547d\u4ee4\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u6709400\u500d\u7684\u5dee\u8ddd\uff0c\u4e00\u4e9b\u4e0d\u826f\u4e3b\u673a\u5546\u4f1a\u501f\u6b64\u7ed3\u679c\u8bf4\u670d\u52a1\u5668\u7684I\/O\u591a\u4e48\u5f3a\u5927\u7b49\u7b49\uff1b\u53e6\u5916\uff0c\u6709\u4e9b\u4e0d\u826f\u4e3b\u673a\u5546\u4f1a\u7528\u6bcd\u9e21\u5728\u5206\u914d\u5c0f\u9e21\u4ee5\u524d\u7684DD\u6d4b\u8bd5\u7ed3\u679c\u6765\u63cf\u8ff0VPS\u7684I\/O\u6027\u80fd\uff0c\u8fd9\u4e5f\u662f\u975e\u5e38\u4e0d\u51c6\u786e\u7684\uff0c\u56e0\u4e3a\u6bcd\u9e21\u5728\u6ca1\u6709\u5206\u914d\u5c0f\u9e21\u7684\u65f6\u5019\u7684\u6027\u80fd\u8868\u660e\u662f\u6574\u53f0\u670d\u52a1\u5668\u7684\u6027\u80fd\uff0c\u800c\u6ee1\u8f7d\u5c0f\u9e21\u540e\u7684\u6027\u80fd\u53ef\u80fd\u4f1a\u51fa\u73b0\u60e8\u4e0d\u5fcd\u7779\u7684\u60c5\u51b5\u3002\u6240\u4ee5\u8bf4\uff0c\u5927\u5bb6\u5728\u8d2d\u4e70VPS\u4ee5\u540e\uff0c\u8fd8\u662f\u5206\u522b\u68c0\u6d4b\u4e0bVPS\u7684I\/O\u6027\u80fd\u4ee5\u53ca\u7f51\u901f\u3002<\/font> <\/p>\n

\u4f7f\u7528DD\u6d4b\u8bd5\u65b9\u6cd5\uff0c\u9ed1\u6843\u5efa\u8bae\u5927\u5bb6\u4f7f\u7528\u6700\u540e\u4e00\u6761\u547d\u4ee4\uff0c\u7ed3\u679c\u8d85\u8fc710M\u5219\u6b63\u5e38\u5efa\u7ad9\u65e0\u538b\u529b\uff0c\u8d85\u8fc750M\u5dee\u4e0d\u591a\u5c31\u5df2\u7ecf\u662f\u4f18\u79c0\u7684\u6c34\u5e73\u4e86\u3002\u6700\u540e\u4e00\u6761\u6d4b\u8bd5\u547d\u4ee4\u5f88\u4e25\u683c\uff0c\u4e5f\u662f\u56fd\u5185\u53d1\u70e7\u73a9\u5bb6\u6700\u559c\u6b22\u7684\u4e86\u3002<\/font> <\/p>\n

Hdparm<\/font><\/strong> <\/p>\n

Hdparm\uff08hard disk parameters\uff09\u53ef\u68c0\u6d4b\u3001\u663e\u793a\u4e0e\u8bbe\u5b9aIDE\u6216SCSI\u786c\u76d8\u7684\u53c2\u6570\uff0c\u6d4b\u8bd5\u5404\u786c\u76d8\u8bfb\u53d6\u901f\u5ea6\u5224\u65ad\u786c\u76d8\u6545\u969c\u3002\u6b64\u65b9\u6cd5\u5bf9SSD\u786c\u76d8\u7684\u68c0\u6d4b\u6709\u5f88\u53c2\u8003\u4ef7\u503c\u3002<\/font> <\/p>\n

1.\u5b89\u88c5Hdparm\uff1a<\/font> <\/p>\n

Redhat\u3001Centos\u3001fedora \u7cfb\u7edf\uff1a<\/font> <\/p>\n

\n

yum -y install hdparm<\/font><\/p>\n<\/blockquote>\n

Debian\u3001Ubuntu\u7cfb\u7edf\uff1a<\/font> <\/p>\n

\n

apt-get -y install hdparm<\/font><\/p>\n<\/blockquote>\n

2.\u6267\u884c\u6d4b\u8bd5\u547d\u4ee4\uff1a<\/font> <\/p>\n

\n

hdparm -t \/dev\/xvda<\/font><\/p>\n<\/blockquote>\n

\u6ce8\uff1a\u201c\/dev\/xvda\u201d\u6307\u7684\u662f\u5bf9\u5e94\u78c1\u76d8\u7684\u9a71\u52a8\u53f7\uff0cxvda \u662f\u4f7f\u7528 Xen DomainU \u6240\u865a\u62df\u51fa\u6765\u4e4b\u4e3b\u78c1\u76d8\uff0c\u4e0d\u540c\u865a\u62df\u5316\u53ef\u4ee5\u4f1a\u4e0d\u540c\uff0c\u8bf7\u6267\u884c\u201cfdisk -l\u201d\u6216\u201cdf -lh\u201d\u67e5\u770b\u3002<\/font> <\/p>\n

PS\uff1a\u5ef6\u4f38\u4e00\u4e0b\uff0c\u72ec\u7acb\u670d\u52a1\u5668\u53ef\u4ee5\u7528\u4ee5\u4e0b\u547d\u4ee4<\/font> <\/p>\n

hdparm -t \/dev\/hda \uff08IDE\u786c\u76d8\uff09<\/font> <\/p>\n

hdparm -t \/dev\/sda \uff08SATA\u3001SCSI\u3001\u786cRAID\u5361\u9635\u5217\uff09<\/font> <\/p>\n

hdparm -t \/dev\/md0 \uff08\u8f6fRAID\u8bbe\u5907\uff09<\/font> <\/p>\n

Hdparm\u547d\u4ee4\u53c2\u6570\uff1a<\/font><\/strong> <\/p>\n

-a<\u5feb\u53d6\u5206\u533a> \u8bbe\u5b9a\u8bfb\u53d6\u6587\u4ef6\u65f6\uff0c\u9884\u5148\u5b58\u5165\u5757\u533a\u7684\u5206\u533a\u6570\uff0c\u82e5\u4e0d\u52a0\u4e0a<\u5feb\u53d6\u5206\u533a>\u9009\u9879\uff0c\u5219\u663e\u793a\u76ee\u524d\u7684\u8bbe\u5b9a\u3002<\/font> <\/p>\n

-A<0\u62161> \u542f\u52a8\u6216\u5173\u95ed\u8bfb\u53d6\u6587\u4ef6\u65f6\u7684\u5feb\u53d6\u529f\u80fd\u3002<\/font> <\/p>\n

-c \u8bbe\u5b9aIDE32\u4f4dI\/O\u6a21\u5f0f\u3002<\/font> <\/p>\n

-C \u68c0\u6d4bIDE\u786c\u76d8\u7684\u7535\u6e90\u7ba1\u7406\u6a21\u5f0f\u3002<\/font> <\/p>\n

-d<0\u62161> \u8bbe\u5b9a\u78c1\u76d8\u7684DMA\u6a21\u5f0f\u3002<\/font> <\/p>\n

-f \u5c06\u5185\u5b58\u7f13\u51b2\u533a\u7684\u6570\u636e\u5199\u5165\u786c\u76d8\uff0c\u5e76\u6e05\u695a\u7f13\u51b2\u533a\u3002<\/font> <\/p>\n

-g \u663e\u793a\u786c\u76d8\u7684\u78c1\u8f68\uff0c\u78c1\u5934\uff0c\u78c1\u533a\u7b49\u53c2\u6570\u3002<\/font> <\/p>\n

-h \u663e\u793a\u5e2e\u52a9\u3002<\/font> <\/p>\n

-i \u663e\u793a\u786c\u76d8\u7684\u786c\u4ef6\u89c4\u683c\u4fe1\u606f\uff0c\u8fd9\u4e9b\u4fe1\u606f\u662f\u5728\u5f00\u673a\u65f6\u7531\u786c\u76d8\u672c\u8eab\u6240\u63d0\u4f9b\u3002<\/font> <\/p>\n

-I \u76f4\u63a5\u8bfb\u53d6\u786c\u76d8\u6240\u63d0\u4f9b\u7684\u786c\u4ef6\u89c4\u683c\u4fe1\u606f\u3002<\/font> <\/p>\n

-k<0\u62161> \u91cd\u8bbe\u786c\u76d8\u65f6\uff0c\u4fdd\u7559-dmu\u53c2\u6570\u7684\u8bbe\u5b9a\u3002<\/font> <\/p>\n

-K<0\u62161> \u91cd\u8bbe\u786c\u76d8\u65f6\uff0c\u4fdd\u7559-APSWXZ\u53c2\u6570\u7684\u8bbe\u5b9a\u3002<\/font> <\/p>\n

-m<\u78c1\u533a\u6570> \u8bbe\u5b9a\u786c\u76d8\u591a\u91cd\u5206\u533a\u5b58\u53d6\u7684\u5206\u533a\u6570\u3002<\/font> <\/p>\n

-n<0\u62161> \u5ffd\u7565\u786c\u76d8\u5199\u5165\u65f6\u6240\u53d1\u751f\u7684\u9519\u8bef\u3002<\/font> <\/p>\n

-p \u8bbe\u5b9a\u786c\u76d8\u7684PIO\u6a21\u5f0f\u3002<\/font> <\/p>\n

-P<\u78c1\u533a\u6570> \u8bbe\u5b9a\u786c\u76d8\u5185\u90e8\u5feb\u53d6\u7684\u5206\u533a\u6570\u3002<\/font> <\/p>\n

-q \u5728\u6267\u884c\u540e\u7eed\u7684\u53c2\u6570\u65f6\uff0c\u4e0d\u5728\u5c4f\u5e55\u4e0a\u663e\u793a\u4efb\u4f55\u4fe1\u606f\u3002<\/font> <\/p>\n

-r<0\u62161> \u8bbe\u5b9a\u786c\u76d8\u7684\u8bfb\u5199\u6a21\u5f0f\u3002<\/font> <\/p>\n

-S<\u65f6\u95f4> \u8bbe\u5b9a\u786c\u76d8\u8fdb\u5165\u7701\u7535\u6a21\u5f0f\u524d\u7684\u7b49\u5f85\u65f6\u95f4\u3002<\/font> <\/p>\n

-t \u8bc4\u4f30\u786c\u76d8\u7684\u8bfb\u53d6\u6548\u7387\u3002<\/font> <\/p>\n

-T \u5e73\u8c37\u786c\u76d8\u5feb\u53d6\u7684\u8bfb\u53d6\u6548\u7387\u3002<\/font> <\/p>\n

-u<0\u62161> \u5728\u786c\u76d8\u5b58\u53d6\u65f6\uff0c\u5141\u8bb8\u5176\u4ed6\u4e2d\u65ad\u8981\u6c42\u540c\u65f6\u6267\u884c\u3002<\/font> <\/p>\n

-v \u663e\u793a\u786c\u76d8\u7684\u76f8\u5173\u8bbe\u5b9a\u3002<\/font> <\/p>\n

-W<0\u62161> \u8bbe\u5b9a\u786c\u76d8\u7684\u5199\u5165\u5feb\u53d6\u3002<\/font> <\/p>\n

-X<\u4f20\u8f93\u6a21\u5f0f> \u8bbe\u5b9a\u786c\u76d8\u7684\u4f20\u8f93\u6a21\u5f0f\u3002<\/font> <\/p>\n

-y \u4f7fIDE\u786c\u76d8\u8fdb\u5165\u7701\u7535\u6a21\u5f0f\u3002<\/font> <\/p>\n

-Y \u4f7fIDE\u786c\u76d8\u8fdb\u5165\u7761\u7720\u6a21\u5f0f\u3002<\/font> <\/p>\n

-Z \u5173\u95ed\u67d0\u4e9bSeagate\u786c\u76d8\u7684\u81ea\u52a8\u7701\u7535\u529f\u80fd\u3002<\/font> <\/p>\n

\n\t\t\t\t\t
<\/font>\u4e03\u725b\u4e91\u5b58\u50a8:\u5916\u94fe\u4e13\u5bb6\uff0c\u514d\u8d3910G\u7a7a\u95f4+10G\u6d41\u91cf\/\u6708\uff0c\u53ef\u7528\u4e8e\u56fe\u7247\u53ca\u97f3\u4e50\u6587\u4ef6\u5916\u94fe\u3002<\/font><\/a><\/div><\/div> <\/p>\n
\n

<\/font><\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u591a\u6570\u670b\u53cb\u5728\u4e70\u5230Linux\u7cfb\u7edf\u7684VPS\u4ee5\u540e\uff0c\u5e38\u5e38\u5bf9VPS\u7684\u6027\u80fd\u4ea7\u751f\u5174\u8da3\uff0c\u901a\u8fc7\u5bf9VPS\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5\uff0c\u4e0d\u4ec5\u80fd\u591f\u4e86\u89e3\u6240 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[118],"tags":[404,407,405,406],"_links":{"self":[{"href":"https:\/\/heitao.me\/index.php?rest_route=\/wp\/v2\/posts\/2775"}],"collection":[{"href":"https:\/\/heitao.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/heitao.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/heitao.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/heitao.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2775"}],"version-history":[{"count":0,"href":"https:\/\/heitao.me\/index.php?rest_route=\/wp\/v2\/posts\/2775\/revisions"}],"wp:attachment":[{"href":"https:\/\/heitao.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/heitao.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/heitao.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}