{"id":2552,"date":"2020-12-23T09:59:54","date_gmt":"2020-12-23T01:59:54","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=2552"},"modified":"2023-03-17T14:15:14","modified_gmt":"2023-03-17T06:15:14","slug":"gbase-8a%e5%8d%95%e6%9c%ba%e9%80%9a%e8%bf%87show-profile%e6%9f%a5%e7%9c%8b%e5%8d%a0%e7%94%a8%e7%9a%84cpu%e7%a3%81%e7%9b%98%e8%af%bb%e5%86%99io%e7%ad%89%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/2552","title":{"rendered":"\"Nanda General GBase 8a uses `show profile` to view CPU usage, disk read\/write IO, and other information.\""},"content":{"rendered":"<p>GBase 8a\u96c6\u7fa4\u7684show profile\u76ee\u524d\u53ea\u80fd\u63d0\u4f9b\u6bcf\u4e2a\u9636\u6bb5\u7684\u8017\u65f6\uff0c\u4f46\u56e0\u4e3a\u5b9e\u9645\u6267\u884c\u5728\u6570\u636e\u8282\u70b9\uff0c\u6240\u4ee5\u6ca1\u6709\u51c6\u786e\u7684CPU\u548c\u78c1\u76d8IO\u8bfb\u5199\u4fe1\u606f\u3002\u800c\u5728\u6570\u636e\u8282\u70b9\u4e0a\uff0c\u53ef\u4ee5\u901a\u8fc7show profile all\u67e5\u770b\u5230\u76f8\u5bf9\u771f\u5b9e\u7684CPU\uff0c\u78c1\u76d8\u8bfb\u5199\u6b21\u6570\u7b49\u8d44\u6e90\u4f7f\u7528\u4fe1\u606f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>show profiles\n\u67e5\u770b\u6240\u6709\u7f13\u51b2\u7684Query\u4fe1\u606f<\/code><\/pre>\n\n\n\n<p>show profile CPU,BLOCK IO;<\/p>\n\n\n\n<p>\u5982\u4e0a\u5e94\u662f\u6700\u5e38\u7528\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2a9d56a7037\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2a9d56a7037\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E8%AF%AD%E6%B3%95\" >\u8bed\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E5%8F%82%E6%95%B0\" >\u53c2\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E4%BD%BF%E7%94%A8%E6%A0%B7%E4%BE%8B\" >\u4f7f\u7528\u6837\u4f8b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E6%B8%85%E7%90%86%E7%BC%93%E5%86%B2\" >\u6e05\u7406\u7f13\u51b2<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E6%B8%85%E7%90%86%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%BC%93%E5%86%B2\" >\u6e05\u7406\u64cd\u4f5c\u7cfb\u7edf\u7f13\u51b2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E6%B8%85%E7%90%86%E6%95%B0%E6%8D%AE%E5%BA%93%E7%BC%93%E5%86%B2\" >\u6e05\u7406\u6570\u636e\u5e93\u7f13\u51b2<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E6%9F%A5%E8%AF%A2%E8%AF%AD%E5%8F%A5\" >\u67e5\u8be2\u8bed\u53e5<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E6%9F%A5%E7%9C%8B%E5%B7%B2%E7%BB%8F%E6%9C%89%E5%BE%97queryID_show_profiles\" >\u67e5\u770b\u5df2\u7ecf\u6709\u5f97queryID show profiles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E5%AF%BC%E5%87%BA%E5%B0%91%E9%87%8F%E6%95%B0%E6%8D%AE\" >\u5bfc\u51fa\u5c11\u91cf\u6570\u636e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#DML%E8%AF%AD%E5%8F%A5\" >DML\u8bed\u53e5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.gbase8.cn\/en\/2552\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%AD%E6%B3%95\"><\/span>\u8bed\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>SHOW PROFILE &#91;type &#91;, type] ... ]\n    &#91;FOR QUERY n]\n    &#91;LIMIT row_count &#91;OFFSET offset]]\n\ntype: {\n    ALL\n  | BLOCK IO\n  | CONTEXT SWITCHES\n  | CPU\n  | IPC\n  | MEMORY\n  | PAGE FAULTS\n  | SOURCE\n  | SWAPS\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E6%95%B0\"><\/span>\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>profiling\u53c2\u6570\uff0c\u9ed8\u8ba4\u662f\u5173\u95ed\uff0c\u4ec5\u652f\u6301session\u7ea7\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; set profiling=1;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BD%BF%E7%94%A8%E6%A0%B7%E4%BE%8B\"><\/span>\u4f7f\u7528\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u6ce8\u610f\uff0c\u78c1\u76d8IO\uff0c\u6307\u771f\u5b9e\u7684\u4ece\u7269\u7406\u78c1\u76d8\u8bfb\u53d6\u548c\u5199\u5165\uff0c\u5982\u679c\u64cd\u4f5c\u7cfb\u7edf\u6709\u7f13\u51b2\uff0c\u5c06\u4e0d\u4f1a\u88ab\u8bb0\u5f55\u3002\u4e3a\u4e86\u66f4\u771f\u5b9e\u7684\u8bc4\u4f30\u78c1\u76d8IO,\u9700\u8981\u505a\u51b7\u6570\u636e\uff0c\u6e05\u7406\u6389\u64cd\u4f5c\u7cfb\u7edf\u7f13\u51b2\u548c\u6570\u636e\u5e93\u7684\u7f13\u51b2\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%B8%85%E7%90%86%E7%BC%93%E5%86%B2\"><\/span>\u6e05\u7406\u7f13\u51b2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%B8%85%E7%90%86%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%BC%93%E5%86%B2\"><\/span>\u6e05\u7406\u64cd\u4f5c\u7cfb\u7edf\u7f13\u51b2<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@gbase_rh7_001 ~]# echo 3 &gt; \/proc\/sys\/vm\/drop_caches\n&#91;root@gbase_rh7_001 ~]#<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%B8%85%E7%90%86%E6%95%B0%E6%8D%AE%E5%BA%93%E7%BC%93%E5%86%B2\"><\/span>\u6e05\u7406\u6570\u636e\u5e93\u7f13\u51b2<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; release cache;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.00)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9F%A5%E8%AF%A2%E8%AF%AD%E5%8F%A5\"><\/span>\u67e5\u8be2\u8bed\u53e5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9F%A5%E7%9C%8B%E5%B7%B2%E7%BB%8F%E6%9C%89%E5%BE%97queryID_show_profiles\"><\/span>\u67e5\u770b\u5df2\u7ecf\u6709\u5f97queryID show profiles<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<pre class=\"wp-block-code has-small-font-size\"><code>gbase> show profiles;\n+----------+--------------+-------------------------------------------------------------------+\n| Query_ID | Duration     | Query                                                             |\n+----------+--------------+-------------------------------------------------------------------+\n|        1 |   0.00109450 | show variables like '%profiling%'                                 |\n|        2 |   0.00016775 | select @@profiling                                                |\n|        3 |   0.00218100 | use test                                                          |\n|        4 |   0.00897825 | select * from hdfs_load where numericcol = '111'                  |\n|        5 |   0.00007625 | show profile for select * from hdfs_load where numericcol = '111' |\n|        6 | 260.01173450 | select *,sleep(300) from hdfs_load where numericcol = '111'       |\n|        7 |   5.02966700 | select *,sleep(300) from hdfs_load where numericcol = '111'       |\n|        8 |   0.02451600 | select * from hdfs_load where numericcol = '111'                  |\n+----------+--------------+-------------------------------------------------------------------+\n8 rows in set (Elapsed: 00:00:00.00)<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%B7%E4%BE%8B\"><\/span>\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u5c06\u53ea\u6709\u8bfb\u53d6IO\u90e8\u5206\uff0c\u5982\u4e0b\u770b Block_ops_in\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select id,count(*) from t1_n1 group by id order by count(*) desc limit 11;\n+-------+----------+\n| id    | count(*) |\n+-------+----------+\n| 25142 |      720 |\n| 22546 |      715 |\n|  5467 |      710 |\n|  3482 |      704 |\n| 22827 |      703 |\n| 29405 |      700 |\n| 17247 |      700 |\n| 16492 |      699 |\n| 31178 |      697 |\n| 21055 |      695 |\n| 22810 |      693 |\n+-------+----------+\n11 rows in set (Elapsed: 00:00:04.90)\n\ngbase&gt; show profile all;\n+---------------+----------+----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n| Status        | Duration | CPU_user | CPU_system | Context_voluntary | Context_involuntary | Block_ops_in | Block_ops_out | Messages_sent | Messages_received | Page_faults_major | Page_faults_minor | Swaps |\n+---------------+----------+----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n| parse         | 0.000243 | 0.000251 |   0.000000 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| init          | 4.896292 | 4.789630 |   0.027203 |                30 |                 462 |        79056 |             0 |             0 |                 0 |                 0 |                90 |     0 |\n| query end     | 0.000107 | 0.000102 |   0.000001 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| commit end    | 0.000081 | 0.000082 |   0.000001 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| freeing items | 0.000070 | 0.000067 |   0.000001 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| cleaning up   | 0.000028 | 0.000027 |   0.000000 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n+---------------+----------+----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n6 rows in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AF%BC%E5%87%BA%E5%B0%91%E9%87%8F%E6%95%B0%E6%8D%AE\"><\/span>\u5bfc\u51fa\u5c11\u91cf\u6570\u636e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6d89\u53ca\u5230\u8bfb\u5199\u3002\u5927\u91cf\u7684\u78c1\u76d8\u8bfb\uff0c\u8ba1\u7b97\u4ee5\u53ca\u5c11\u91cf\u7684\u78c1\u76d8\u5199\u5165\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select id,count(*) from t1_n1 group by id order by count(*) desc limit 11 into outfile '\/home\/gbase\/1.txt' writemode by overwrites;\nQuery OK, 11 rows affected (Elapsed: 00:00:04.63)\n\ngbase&gt; show profile all;\n+---------------+----------+----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n| Status        | Duration | CPU_user | CPU_system | Context_voluntary | Context_involuntary | Block_ops_in | Block_ops_out | Messages_sent | Messages_received | Page_faults_major | Page_faults_minor | Swaps |\n+---------------+----------+----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n| parse         | 0.000260 | 0.000255 |   0.000003 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 4 |     0 |\n| init          | 4.629179 | 4.532016 |   0.031844 |                26 |                 434 |        79024 |             8 |             0 |                 0 |                 0 |                12 |     0 |\n| query end     | 0.000164 | 0.000156 |   0.000001 |                 0 |                   1 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| commit end    | 0.000099 | 0.000000 |   0.001012 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| freeing items | 0.000048 | 0.000000 |   0.000000 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| cleaning up   | 0.000025 | 0.000000 |   0.000000 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n+---------------+----------+----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n6 rows in set (Elapsed: 00:00:00.00)\n\ngbase&gt;\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DML%E8%AF%AD%E5%8F%A5\"><\/span>DML\u8bed\u53e5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4f1a\u6709\u8bfb\u5199\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u5230\uff0c\u5168\u8868\u590d\u5236\u65f6\u7684\u8bfb\u5199\u51e0\u4e4e\u76f8\u5f53\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code has-small-font-size\"><code>gbase&gt; create table a like t1_n1;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.18)\n\ngbase&gt; insert into a select * from t1_n1;\nQuery OK, 20000005 rows affected (Elapsed: 00:00:23.84)\nRecords: 20000005  Duplicates: 0  Warnings: 0 Total: 20000005\n\ngbase&gt; show profile all;\n+----------------------+-----------+-----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n| Status               | Duration  | CPU_user  | CPU_system | Context_voluntary | Context_involuntary | Block_ops_in | Block_ops_out | Messages_sent | Messages_received | Page_faults_major | Page_faults_minor | Swaps |\n+----------------------+-----------+-----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n| parse                |  0.000144 |  0.000139 |   0.000001 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 5 |     0 |\n| checking permissions |  0.000174 |  0.000172 |   0.000002 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 7 |     0 |\n| init                 | 20.409096 | 18.462448 |   1.101342 |               114 |                1906 |       921282 |        916936 |             0 |                 0 |                 1 |            206776 |     0 |\n| query end            |  0.064205 |  0.000473 |   0.000009 |                 5 |                   0 |            0 |            16 |             0 |                 0 |                 0 |                 1 |     0 |\n| commit testdb.a      |  3.366323 |  0.006193 |   0.046511 |                39 |                   3 |            0 |             0 |             0 |                 0 |                 0 |                26 |     0 |\n| commit end           |  0.000108 |  0.000100 |   0.000002 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| freeing items        |  0.000066 |  0.000064 |   0.000002 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n| cleaning up          |  0.000026 |  0.000026 |   0.000000 |                 0 |                   0 |            0 |             0 |             0 |                 0 |                 0 |                 0 |     0 |\n+----------------------+-----------+-----------+------------+-------------------+---------------------+--------------+---------------+---------------+-------------------+-------------------+-------------------+-------+\n8 rows in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83\"><\/span>\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-\u8001\u7d2b\u7af9\u7684\u5bb6 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