{"id":120,"date":"2018-03-10T15:13:15","date_gmt":"2018-03-10T07:13:15","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=120"},"modified":"2018-03-10T15:13:15","modified_gmt":"2018-03-10T07:13:15","slug":"hadoop%e7%9a%84testdfsio%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=120","title":{"rendered":"Hadoop\u7684TestDFSIO\u6d4b\u8bd5"},"content":{"rendered":"<p>\u4e3a\u4e86\u6d4b\u8bd5Hadoop\u7528mapreduce\u65b9\u5f0f\u8bfb\u5199\u6587\u4ef6\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u5f00\u53d1\u4e86TestDFSIO\uff0c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><span style=\"font-size: medium;\"><b>\u5199\u6d4b\u8bd5<\/b><\/span><br \/>\ncd\u5230hadoop\u5b89\u88c5\u76ee\u5f55:<br \/>\n# cd hadoop<br \/>\n\u770b\u770b\u5185\u5b58\u60c5\u51b5\uff1a<br \/>\n# free -g<br \/>\n\u540c\u6b65\u5185\u5b58\u6587\u4ef6\u7f13\u5b58\u5230\u786c\u76d8\uff1a<br \/>\n# sync<br \/>\n\u6e05\u7a7alinux\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\uff1a<br \/>\n# echo 3 &gt; \/proc\/sys\/vm\/drop_caches<br \/>\n\u518d\u6b21\u67e5\u770b\u5185\u5b58\u60c5\u51b5\uff1a<br \/>\n# free -g<br \/>\n\u5207\u6362\u5230hadoop\u7528\u6237\uff1a<br \/>\n# su &#8211; hadoop<br \/>\n$ cd hadoop<br \/>\n$ hadoop jar hadoop-test-0.20.2-cdh3u0.jar TestDFSIO -write -nrFiles 1000 -fileSize 512 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -bufferSize 67108864<br \/>\n\u5176\u4e2dhadoop-test-0.20.2-cdh3u0.jar\u5728\u4e0b\u8f7d\u6765\u7684hadoop\u91cc\u9762\u5e94\u8be5\u5df2\u7ecf\u7f16\u8bd1\u597d\u4e86\u3002\u53c2\u6570\u5e94\u8be5\u5f88\u6e05\u695a\uff0c-nrFiles\u4e3a\u5199\u5165\u6587\u4ef6\u6570\u91cf\uff0c-fileSize\u4e3a\u6bcf\u4e2a\u6587\u4ef6\u5927\u5c0f\u3002<\/p>\n<p>\u6d4b\u8bd5\u7ed3\u679c\uff1a<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO: &#8212;&#8211; TestDFSIO &#8212;&#8211; : write<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Date &amp; time: Thu Jun 09 11:04:03 CST 2011<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Number of files: 1000<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO: Total MBytes processed: 512000<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0\u00a0 Throughput mb\/sec: 3.0791832418338796<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO: Average IO rate mb\/sec: 3.3843436241149902<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO:\u00a0 IO rate std deviation: 1.4860198954469508<br \/>\n11\/06\/09 11:04:03 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0 Test exec time sec: 218.298<br \/>\n\u7ed3\u679c\u8bf4\u660e\uff1a<br \/>\nTotal MBytes processed\u00a0 \uff1a \u603b\u5171\u9700\u8981\u5199\u5165\u7684\u6570\u636e\u91cf \uff1d\uff1d\u300b 512X1000<br \/>\nThroughput mb\/sec\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \uff1a\u603b\u5171\u9700\u8981\u5199\u5165\u7684\u6570\u636e\u91cf\/\uff08\u6bcf\u4e2amap\u4efb\u52a1\u5b9e\u9645\u5199\u5165\u6570\u636e\u7684\u6267\u884c\u65f6\u95f4\u4e4b\u548c\uff08\u8fd9\u4e2a\u65f6\u95f4\u4f1a\u8fdc\u5c0f\u4e8eTest exec time sec\uff09\uff09\uff1d\uff1d\u300b512000\/(map1\u5199\u65f6\u95f4+map2\u5199\u65f6\u95f4+&#8230;)<br \/>\nAverage IO rate mb\/sec\u00a0 \uff1a\uff08\u6bcf\u4e2amap\u9700\u8981\u5199\u5165\u7684\u6570\u636e\u91cf\/\u6bcf\u4e2amap\u4efb\u52a1\u5b9e\u9645\u5199\u5165\u6570\u636e\u7684\u6267\u884c\u65f6\u95f4\uff09\u4e4b\u548c\/\u4efb\u52a1\u6570\uff1d\uff1d\u300b(512\/map1\u5199\u65f6\u95f4\uff0b512\/map2\u5199\u65f6\u95f4+&#8230;)\/1000\uff0c\u6240\u4ee5\u8fd9\u4e2a\u503c\u8ddf\u4e0a\u9762\u4e00\u4e2a\u503c\u603b\u662f\u5b58\u5728\u5dee\u5f02\u3002<br \/>\nIO rate std deviation\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \uff1a\u4e0a\u4e00\u4e2a\u503c\u7684\u6807\u51c6\u5dee<br \/>\nTest exec time sec\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0\u00a0 \uff1a\u6574\u4e2ajob\u7684\u6267\u884c\u65f6\u95f4<\/p>\n<p><span style=\"font-size: medium;\"><b>\u8bfb\u6d4b\u8bd5<\/b><\/span><br \/>\n\u5982\u679c\u8bf4\u5199\u6d4b\u8bd5\u8fd8\u53ef\u4ee5\u4e0d\u8981\u6e05\u7a7alinux\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u7684\u8bdd\uff0c\u8ddf\u7740\u7684<span style=\"color: #ff0000;\">\u8bfb\u6d4b\u8bd5\u5219\u5fc5\u987b\u6e05\u7a7a<\/span>\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bf9\u7ed3\u679c\u5f71\u54cd\u5f88\u5927\u3002<br \/>\n$ su root<br \/>\n# free -g<br \/>\n# sync<br \/>\n# echo 3 &gt; \/proc\/sys\/vm\/drop_caches<br \/>\n# free -g<br \/>\n# su &#8211; hadoop<br \/>\n$ hadoop jar hadoop-test-0.20.2-cdh3u0.jar TestDFSIO -read -nrFiles 1000 -fileSize 512 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -bufferSize 67108864<\/p>\n<p>\u6d4b\u8bd5\u7ed3\u679c\uff1a<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO: &#8212;&#8211; TestDFSIO &#8212;&#8211; : read<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Date &amp; time: Tue May 31 16:41:02 CST 2011<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Number of files: 1000<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO: Total MBytes processed: 512000<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0\u00a0 Throughput mb\/sec: 51.157743703700746<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO: Average IO rate mb\/sec: 55.17451095581055<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO:\u00a0 IO rate std deviation: 14.862287798304873<br \/>\n11\/05\/31 16:41:02 INFO fs.TestDFSIO:\u00a0\u00a0\u00a0\u00a0 Test exec time sec: 38.702<br \/>\n\u7ed3\u679c\u8bf4\u660e\uff1a<br \/>\n\u7ed3\u679c\u7684\u610f\u601d\u540c\u5199\uff0c\u5c31\u662f\u6807\u51c6\u5dee\u6bd4\u5199\u8981\u5927\u3002<\/p>\n<p><span style=\"font-size: medium;\"><b>\u6e05\u7406\u6d4b\u8bd5\u6587\u4ef6<\/b><\/span><br \/>\nhadoop jar hadoop-test-0.20.2-cdh3u0.jar TestDFSIO -clean<\/p>\n<p>\u96c6\u7fa4\u6bd4\u8f83\u5c0f\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e2a\u6d4b\u8bd5\u5e76\u53d1map\uff08mapred.tasktracker.map.tasks.maximum\uff09\u6570\u8d8a\u5c11\uff0c\u5219\u663e\u793a\u51fa\u6765\u7684\u901f\u5ea6\u4f1a\u8d8a\u5feb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e3a\u4e86\u6d4b\u8bd5Hadoop\u7528mapreduce\u65b9\u5f0f\u8bfb\u5199\u6587\u4ef6\u7cfb\u7edf\u7684\u6027\u80fd\uff0c\u5f00\u53d1\u4e86TestDFSIO\uff0c\u7528\u6cd5\u5982\u4e0b\uff1a \u5199\u6d4b\u8bd5  &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63],"tags":[83,86,80,87,82],"class_list":["post-120","post","type-post","status-publish","format-standard","hentry","category-63","tag-benchmark","tag-dfs","tag-hadoop","tag-io","tag-82"],"views":2510,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=120"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/120\/revisions"}],"predecessor-version":[{"id":121,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/120\/revisions\/121"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=120"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}