{"id":2824,"date":"2018-06-02T12:07:39","date_gmt":"2018-06-02T04:07:39","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=2824"},"modified":"2018-06-02T12:07:39","modified_gmt":"2018-06-02T04:07:39","slug":"%e5%94%af%e5%93%81%e4%bc%9a-vjtop-%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=2824","title":{"rendered":"\u552f\u54c1\u4f1a vjtop \u6559\u7a0b"},"content":{"rendered":"<p>\n\t\u82e5\u4f60\u4e60\u60ef\u4ee5Top\u89c2\u5bdf&ldquo;OS\u6307\u6807\u53ca\u7e41\u5fd9\u7684\u8fdb\u7a0b&rdquo;\uff0c\u4e5f\u63a8\u8350\u4ee5VJTop\u89c2\u770b &ldquo;JVM\u6307\u6807\u53caCPU\/\u5185\u5b58\u7e41\u5fd9\u7684\u7ebf\u7a0b&rdquo;\u3002\n<\/p>\n<p>\n\t\u5728<a href=\"https:\/\/github.com\/patric-r\/jvmtop\">jvmtop<\/a>&nbsp;\u7684\u57fa\u7840\u4e0a\u4e8c\u6b21\u5f00\u53d1\uff0c\u7ed3\u5408&nbsp;<a href=\"https:\/\/github.com\/aragozin\/jvm-tools\">SJK<\/a>\u7684\u4f18\u70b9\uff0c\u4ece\/proc \uff0c PerfData\uff0cJMX\u7b49\u5904\uff0c\u4ee5\u66f4\u9ad8\u7684\u6027\u80fd\uff0c\u83b7\u53d6\u66f4\u591a\u7684\u4fe1\u606f\u3002\n<\/p>\n<p>\n\t\u8fd0\u884c\u65f6\u4e0d\u9020\u6210\u5e94\u7528\u505c\u987f\uff0c\u53ef\u5728\u7ebf\u4e0a\u5b89\u5168\u4f7f\u7528\u3002\n<\/p>\n<h2>\n\t\u4f7f\u7528\u8bf4\u660e<br \/>\n<\/h2>\n<p>\n\tmaven\u7f16\u8bd1\u540e\u5f97\u5230zip\u5305\uff0c\u89e3\u538b\u540e\u8fd0\u884c\u3002\n<\/p>\n<p>\n\t\u9700\u8981\u8bbe\u7f6eJAVA_HOME \u73af\u5883\u53d8\u91cf\uff0c\u5fc5\u987b\u4e0e\u76ee\u6807JVM\u4f7f\u7528\u76f8\u540c\u7528\u6237\u8fd0\u884c\uff0c\u5982\u679c\u6267\u884c\u65f6\u4ecd\u7136\u6709\u6743\u9650\u9519\u8bef\uff0c\u6539\u7528root\u7528\u6237\u6267\u884c\u3002\n<\/p>\n<pre class=\"brush:bash;\">\r\n\/\/ \u5360\u7528CPU\u6700\u591a\u7684\u7ebf\u7a0b\r\n.\/vjtop.sh &lt;PID&gt;<\/pre>\n<h2>\n\t\u8fdb\u7a0b\u533a\u6570\u636e\u6765\u6e90\u539f\u7406<br \/>\n<\/h2>\n<ul>\n<li>\n\t\t\u4ece\/proc\/PID\/* \u6587\u4ef6\u4e2d\u83b7\u53d6\u8fdb\u7a0b\u6570\u636e\n\t<\/li>\n<li>\n\t\t\u4eceJDK\u7684PerfData\u6587\u4ef6\u4e2d\u83b7\u53d6JVM\u6570\u636e(JDK\u6bcf\u79d2\u5199\u5165\/tmp\/herfxxxx\u6587\u4ef6\u7684\u7edf\u8ba1\u6570\u636e)\n\t<\/li>\n<li>\n\t\t\u4f7f\u7528\u76ee\u6807JVM\u7684JMX\u4e2d\u83b7\u53d6JVM\u6570\u636e\uff08\u5982\u679c\u76ee\u6807JVM\u8fd8\u6ca1\u542f\u52a8JMX\uff0c\u901a\u8fc7attach\u65b9\u5f0f\u52a8\u6001\u52a0\u8f7d\uff09\n\t<\/li>\n<\/ul>\n<p>\n\t\u5982\u679c\u6570\u636e\u540c\u65f6\u5728PerfData\u548cJMX\u5b58\u5728\uff0c\u4f18\u5148\u4f7f\u7528PerfData\uff0c\u5982\u679cPerfData\u88ab\u5c4f\u853d\uff0c\u5219\u4f7f\u7528JMX\u3002\n<\/p>\n<h2>\n\t\u7ebf\u7a0b\u533a\u6570\u636e\u6765\u6e90\u539f\u7406<br \/>\n<\/h2>\n<p>\n\t\u4f7f\u7528ThreadMxBean\u64cd\u4f5c\uff1a\n<\/p>\n<ol>\n<li>\n\t\tgetAllThreadIds()\u83b7\u5f97\u6240\u6709Thread Id\n\t<\/li>\n<li>\n\t\tgetThreadCpuTime(tids)\u83b7\u5f97\u6240\u6709\u7ebf\u7a0b\u7684CPU\u65f6\u95f4 (\u4ee5\u53caSYS CPU\uff0c\u5185\u5b58\u5206\u914d)\n\t<\/li>\n<li>\n\t\t\u6392\u5e8f\u540e\uff0c\u7528getThreadInfo(tids)\u83b7\u5f97\u524d10\u540d\u7ebf\u7a0b\u7684\u4fe1\u606f\uff0c\u56e0\u4e3a\u4e0d\u53d6\u7ebf\u7a0b\u7684StackTrace\uff0c\u4e0d\u4f1a\u5835\u585e\u5e94\u7528\u3002\n\t<\/li>\n<\/ol>\n<h2>\n\t\u627e\u51faCPU\u6700\u7e41\u5fd9\u7684\u7ebf\u7a0b<br \/>\n<\/h2>\n<p>\n\t\u547d\u4ee4\u53c2\u6570\u5982\u4e0b\uff1a\n<\/p>\n<pre class=\"brush:bash;\">\r\n\/\/ \u6309\u7ebf\u7a0b\u7684CPU\u6392\u5e8f\uff0c\u9ed8\u8ba4\u663e\u793a\u524d10\u7684\u7ebf\u7a0b\uff0c\u9ed8\u8ba4\u6bcf10\u79d2\u6253\u5370\u4e00\u6b21\r\n.\/vjtop.sh &lt;PID&gt;\r\n\r\n\/\/ \u6309\u7ebf\u7a0b\u7684\u603bCPU\u800c\u4e0d\u662f\u6253\u5370\u95f4\u9694\u5185\u7684CPU\u6765\u6392\u5e8f\r\n.\/vjtop.sh --totalcpu &lt;PID&gt;\r\n\r\n\/\/ \u6309\u7ebf\u7a0b\u7684SYS CPU\u6392\u5e8f\r\n.\/vjtop.sh --syscpu &lt;PID&gt;\r\n\r\n\/\/ \u6309\u7ebf\u7a0b\u7684\u603bSYS CPU\u6392\u5e8f\r\n.\/vjtop.sh --totalsyscpu &lt;PID&gt;<\/pre>\n<p>\n\t\u8f93\u51fa\u793a\u4f8b\uff1a\n<\/p>\n<pre class=\"brush:plain;\">\r\n VJTop 1.0.0 - 11:38:02, UPTIME: 3d01h\r\n PID: 127197, JVM: 1.7.0_79, USER: even.liang\r\n PROCESS:  0.99% cpu ( 0.04% of 24 core), 2491m rss,   0m swap\r\n IO:   24k rchar,    1k wchar,    0 read_bytes,    0 write_bytes\r\n THREAD:   97 active,   89 daemon,   99 peak,  461 created, CLASS: 12243 loaded, 0 unloaded\r\n HEAP: 160m\/819m eden, 0m\/102m sur, 43m\/1024m old\r\n NON-HEAP: 55m\/256m cms perm gen, 8m\/96m codeCache\r\n OFF-HEAP: 0m\/0m direct, 0m\/0m map\r\n GC: 0\/0ms ygc, 0\/0ms fgc, SAFE-POINT: 6 count, 1ms time, 1ms syncTime\r\n THREADS-CPU:  1.01% (user= 0.31%, sys= 0.70%)\r\n\r\n    TID NAME                                                      STATE    CPU SYSCPU  TOTAL TOLSYS\r\n     43 metrics-mercury-metric-logger-1-thread-1             TIMED_WAIT  0.38%  0.28% 25.48%  9.13%\r\n    110 metrics-mercury-metric-logger-2-thread-1             TIMED_WAIT  0.38%  0.18% 25.43%  9.10%\r\n    496 RMI TCP Connection(365)-192.168.200.87                 RUNNABLE  0.05%  0.05%  0.00%  0.00%\r\n     82 Proxy-Worker-5-10                                      RUNNABLE  0.01%  0.01%  0.93%  0.30%\r\n    120 threadDeathWatcher-6-1                               TIMED_WAIT  0.00%  0.00%  0.26%  0.09%\r\n     98 Proxy-Worker-5-16                                      RUNNABLE  0.00%  0.00%  0.80%  0.26%\r\n     99 Proxy-Worker-5-17                                      RUNNABLE  0.00%  0.00%  0.92%  0.31%\r\n     63 Proxy-Worker-5-2                                       RUNNABLE  0.00%  0.00%  1.07%  0.37%\r\n     70 Proxy-Worker-5-5                                       RUNNABLE  0.00%  0.00%  0.78%  0.26%\r\n    102 Proxy-Worker-5-20                                      RUNNABLE  0.00%  0.00%  0.80%  0.27%\r\n\r\n Note: Only top 10 threads (according cpu load) are shown!\r\n Cost time:  46ms, CPU time:  60ms<\/pre>\n<p>\n\t\u8fdb\u7a0b\u533a\u6570\u636e\u89e3\u91ca:\n<\/p>\n<ul>\n<li>\n\t\t<code>rss<\/code>:&nbsp;<code>Resident Set Size<\/code>, \u8be5\u8fdb\u7a0b\u5728\u5185\u5b58\u4e2d\u7684\u9875\u7684\u6570\u91cf\u3002\u8be5\u6570\u636e\u4ece\/proc\/&lt;pid&gt;\/status\u4e2d\u83b7\u53d6, \u542b\u4e49\u4e0e<a href=\"http:\/\/man7.org\/linux\/man-pages\/man5\/proc.5.html\" rel=\"nofollow\">proc filesystem<\/a>\u4e2d\u4e00\u81f4\u3002\n\t<\/li>\n<li>\n\t\t<code>swap<\/code>: \u88ab\u4ea4\u6362\u51fa\u53bb\u7684\u865a\u5b58\u5927\u5c0f\u3002\u8be5\u6570\u636e\u4ece\/proc\/&lt;pid&gt;\/status\u4e2d\u83b7\u53d6, \u542b\u4e49\u4e0e<a href=\"http:\/\/man7.org\/linux\/man-pages\/man5\/proc.5.html\" rel=\"nofollow\">proc filesystem<\/a>\u4e2d\u4e00\u81f4\u3002\n\t<\/li>\n<li>\n\t\t<code>rchar\/wchar<\/code>: \u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u7684\u8bfb\/\u5199\u7684\u5b57\u8282\u6570\u3002\u8be5\u6570\u636e\u4ece\/proc\/&lt;pid&gt;\/io\u4e2d\u83b7\u53d6\uff0c\u542b\u4e49\u4e0e<a href=\"http:\/\/man7.org\/linux\/man-pages\/man5\/proc.5.html\" rel=\"nofollow\">proc filesystem<\/a>\u4e2d\u4e00\u81f4\u3002\n\t<\/li>\n<li>\n\t\t<code>read_bytes\/write_bytes<\/code>: \u771f\u6b63\u8fbe\u5230\u5b58\u50a8\u5c42\u7684\u8bfb\/\u5199\u7684\u5b57\u8282\u6570\u3002\u8be5\u6570\u636e\u4ece\/proc\/&lt;pid&gt;\/io\u4e2d\u83b7\u53d6\uff0c\u542b\u4e49\u4e0e<a href=\"http:\/\/man7.org\/linux\/man-pages\/man5\/proc.5.html\" rel=\"nofollow\">proc filesystem<\/a>\u4e2d\u4e00\u81f4\u3002\n\t<\/li>\n<li>\n\t\t<code>codeCache<\/code>: JIT\u7f16\u8bd1\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u7684\u5b58\u653e\u533a\uff0c\u6ee1\u540e\u5c06\u4e0d\u80fd\u7f16\u8bd1\u65b0\u7684\u4ee3\u7801\u3002\n\t<\/li>\n<li>\n\t\t<code>direct<\/code>: \u5806\u5916\u5185\u5b58\uff0c\u4f46\u6ce8\u610f\u65b0\u7248Netty\u4e0d\u7ecf\u8fc7JDK API\u6240\u5206\u914d\u7684\u5806\u5916\u5185\u5b58\u672a\u80fd\u7eaa\u5f55\u3002\n\t<\/li>\n<li>\n\t\t<code>SAFE-POINT<\/code>: PerfData\u5f00\u542f\u65f6\u53ef\u7528\uff0cJVM\u771f\u6b63\u7684\u505c\u987f\u6b21\u6570\u53ca\u505c\u987f\u65f6\u95f4\n\t<\/li>\n<\/ul>\n<p>\n\t\u7ebf\u7a0b\u533a\u6570\u636e\u89e3\u91ca:\n<\/p>\n<ul>\n<li>\n\t\t<code>CPU<\/code>: \u7ebf\u7a0b\u5728\u6253\u5370\u95f4\u9694\u5185\u6240\u5360\u7684CPU\u767e\u5206\u6bd4(\u6309\u5355\u4e2a\u6838\u8ba1\u7b97)\n\t<\/li>\n<li>\n\t\t<code>SYSCPU<\/code>: \u7ebf\u7a0b\u5728\u6253\u5370\u95f4\u9694\u5185\u6240\u5360\u7684SYS CPU\u767e\u5206\u6bd4(\u6309\u5355\u4e2a\u6838\u8ba1\u7b97)\n\t<\/li>\n<li>\n\t\t<code>TOTAL<\/code>: \u4ece\u8fdb\u7a0b\u542f\u52a8\u5230\u73b0\u5728\uff0c\u7ebf\u7a0b\u7684\u603bCPU\u65f6\u95f4\/\u8fdb\u7a0b\u7684\u603bCPU\u65f6\u95f4\u7684\u767e\u5206\u6bd4\n\t<\/li>\n<li>\n\t\t<code>TOLSYS<\/code>: \u4ece\u8fdb\u7a0b\u542f\u52a8\u5230\u73b0\u5728\uff0c\u7ebf\u7a0b\u7684\u603bSYS CPU\u65f6\u95f4\/\u8fdb\u7a0b\u7684\u603bCPU\u65f6\u95f4\u7684\u767e\u5206\u6bd4\n\t<\/li>\n<\/ul>\n<p>\n\t\u5e95\u90e8\u6570\u636e\u89e3\u91ca:\n<\/p>\n<ul>\n<li>\n\t\t<code>Cost time<\/code>: \u672c\u6b21\u91c7\u96c6\u6570\u636e\u53ca\u8f93\u51fa\u7684\u8017\u65f6\n\t<\/li>\n<li>\n\t\t<code>CPU time<\/code>: \u672c\u6b21\u91c7\u96c6\u6570\u636e\u53ca\u8f93\u51fa\u7684CPU\u65f6\u95f4\u5360\u7528\n\t<\/li>\n<\/ul>\n<h2>\n\t\u627e\u51fa\u5185\u5b58\u5206\u914d\u6700\u9891\u7e41\u7684\u7ebf\u7a0b<br \/>\n<\/h2>\n<p>\n\t\u547d\u4ee4\u53c2\u6570\u5982\u4e0b\uff1a\n<\/p>\n<pre class=\"brush:bash;\">\r\n\/\/ \u7ebf\u7a0b\u5206\u914d\u5185\u5b58\u7684\u901f\u5ea6\u6392\u5e8f\uff0c\u9ed8\u8ba4\u663e\u793a\u524d10\u7684\u7ebf\u7a0b\uff0c\u9ed8\u8ba4\u6bcf10\u79d2\u6253\u5370\u4e00\u6b21\r\n.\/vjtop.sh --memory &lt;PID&gt;\r\n\r\n\/\/ \u6309\u7ebf\u7a0b\u7684\u603b\u5185\u5b58\u5206\u914d\u800c\u4e0d\u662f\u6253\u5370\u95f4\u9694\u5185\u7684\u5185\u5b58\u5206\u914d\u6765\u6392\u5e8f\r\n.\/vjtop.sh --totalmemory &lt;PID&gt;<\/pre>\n<p>\n\t\u8f93\u51fa\u793a\u4f8b\uff1a\n<\/p>\n<pre class=\"brush:plain;\">\r\n(\u5ffd\u7565\u5934\u4fe1\u606f)\r\n THREADS-MEMORY:   30k\/s allocation rate\r\n\r\n    TID NAME                                                 STATE         MEMORY         TOTAL-ALLOCATED\r\n  47636 RMI TCP Connection(583)-127.0.0.1                 RUNNABLE   27k\/s(88.76%)    17m( 0.00%)\r\n      1 main                                              RUNNABLE    2k\/s( 8.44%)   370g(83.16%)\r\n  47845 JMX server connection timeout 47845             TIMED_WAIT   251\/s( 0.80%)    21k( 0.00%)\r\n  46607 Worker-501                                      TIMED_WAIT    60\/s( 0.19%)   934m( 0.20%)\r\n  46609 Worker-502                                      TIMED_WAIT    60\/s( 0.19%)   822m( 0.18%)\r\n  46610 Worker-503                                      TIMED_WAIT    60\/s( 0.19%)   737m( 0.16%)\r\n  46763 Worker-504                                      TIMED_WAIT    60\/s( 0.19%)   696m( 0.15%)\r\n  46764 Worker-505                                      TIMED_WAIT    60\/s( 0.19%)   743m( 0.16%)\r\n  47149 Worker-506                                      TIMED_WAIT    60\/s( 0.19%)   288m( 0.06%)\r\n  46551 Worker-500                                      TIMED_WAIT    60\/s( 0.19%)   757m( 0.17%)<\/pre>\n<p>\n\t\u8fdb\u7a0b\u533a\u6570\u636e\u89e3\u91ca:\n<\/p>\n<ul>\n<li>\n\t\t<code>allocation rate<\/code>: \u6240\u6709\u7ebf\u7a0b\u5728\u6253\u5370\u95f4\u9694\u5185\u6bcf\u79d2\u5206\u914d\u7684\u5185\u5b58\n\t<\/li>\n<\/ul>\n<p>\n\t\u7ebf\u7a0b\u533a\u6570\u636e\u89e3\u91ca:\n<\/p>\n<ul>\n<li>\n\t\t<code>STATE<\/code>: \u8be5\u7ebf\u7a0b\u5f53\u524d\u7684\u72b6\u6001\n\t<\/li>\n<li>\n\t\t<code>MEMORY<\/code>: \u8be5\u7ebf\u7a0b\u5206\u914d\u5185\u5b58\u7684\u77ac\u65f6\u503c\uff0c\u5373\u8be5\u7ebf\u7a0b\u5728\u6253\u5370\u95f4\u9694\u5185\u6bcf\u79d2\u5206\u914d\u7684\u5185\u5b58\u7a7a\u95f4(\u8be5\u7ebf\u7a0b\u6bcf\u79d2\u5206\u914d\u7684\u5185\u5b58\u5360\u6240\u6709\u7ebf\u7a0b\u5728\u8be5\u79d2\u5206\u914d\u7684\u603b\u5185\u5b58\u7684\u767e\u5206\u6bd4)\n\t<\/li>\n<li>\n\t\t<code>TOTAL-ALLOCATED<\/code>: \u8be5\u7ebf\u7a0b\u5206\u914d\u5185\u5b58\u7684\u5386\u53f2\u7d2f\u8ba1\u503c\uff0c\u5373\u4ece\u8fdb\u7a0b\u542f\u52a8\u5230\u73b0\u5728\uff0c\u8be5\u7ebf\u7a0b\u5206\u914d\u7684\u603b\u5185\u5b58\u5927\u5c0f\uff0c\u8be5\u603b\u5185\u5b58\u5927\u5c0f\u5305\u62ec\u5df2\u56de\u6536\u7684\u5bf9\u8c61\u7684\u5185\u5b58(\u8be5\u7ebf\u7a0b\u5206\u914d\u7684\u603b\u5185\u5b58\u5927\u5c0f\u5360\u6240\u6709\u7ebf\u7a0b\u5206\u914d\u7684\u603b\u5185\u5b58\u5927\u5c0f\u7684\u767e\u5206\u6bd4)\u3002\n\t<\/li>\n<\/ul>\n<p>\n\t\u516c\u5171\u53c2\u6570\u5982\u4e0b\uff1a\n<\/p>\n<pre class=\"brush:bash;\">\r\n\/\/ \u6253\u5370\u5176\u4ed6\u9009\u9879\r\n.\/vjtop.sh -h\r\n\r\n\/\/ \u7ed3\u679c\u8f93\u51fa\u5230\u6587\u4ef6\r\n.\/vjtop.sh &lt;PID&gt; &gt; \/tmp\/vjtop.log\r\n\r\n\/\/ \u6bcf5\u79d2\u6253\u5370\u4e00\u6b21\uff08\u9ed8\u8ba410\u79d2\uff09\r\n.\/vjtop.sh -d 5 &lt;PID&gt;\r\n\r\n\/\/ \u663e\u793a\u524d20\u7684\u7ebf\u7a0b\uff08\u9ed8\u8ba410\uff09\r\n.\/vjtop.sh -l 20 &lt;PID&gt;\r\n\r\n\/\/ \u66f4\u5bbd\u7684120\u5b57\u8282\u7684\u5c4f\u5e55 \uff08\u9ed8\u8ba4100\uff09\r\n.\/vjtop.sh -w 120 &lt;PID&gt; &gt; \/tmp\/vjtop.log\r\n\r\n\/\/ \u6253\u537020\u6b21\u540e\u9000\u51fa\r\n.\/vjtop.sh -n 20 &lt;PID&gt;<\/pre>\n<h2>\n\t\u70ed\u70b9\u7ebf\u7a0b\u9875<br \/>\n<\/h2>\n<ul>\n<li>\n\t\t\u65b0\u529f\u80fd\uff1a\u7ebf\u7a0b\u5185\u5b58\u5206\u914d\u901f\u5ea6\u7684\u5c55\u793a\u4e0e\u6392\u5e8f (from SJK)\n\t<\/li>\n<li>\n\t\t\u65b0\u529f\u80fd\uff1a\u7ebf\u7a0bSYS CPU\u7684\u5c55\u793a\u4e0e\u6392\u5e8f\uff0c\u5e94\u7528\u542f\u52a8\u4ee5\u6765\u7ebf\u7a0b\u7684\u603bCPU\u95f4\u7684\u6392\u5e8f (from SJK)\n\t<\/li>\n<li>\n\t\t\u65b0\u529f\u80fd\uff1a\u8fdb\u7a0b\u7684\u7269\u7406\u5185\u5b58\uff0cSWAP\uff0cIO\u4fe1\u606f\n\t<\/li>\n<li>\n\t\t\u65b0\u529f\u80fd\uff1a\u5c06\u5185\u5b58\u4fe1\u606f\u4e0eGC\u4fe1\u606f\u62c6\u5f00\u4e0d\u540c\u5206\u4ee3\u72ec\u7acb\u663e\u793a\uff0c\u663e\u793aCodeCache\u4e0e\u5806\u5916\u5185\u5b58\u4fe1\u606f\n\t<\/li>\n<li>\n\t\t\u65b0\u914d\u7f6e\u9879\uff1a\u6253\u5370\u95f4\u9694\uff0c\u5c55\u793a\u7ebf\u7a0b\u6570\n\t<\/li>\n<li>\n\t\t\u6027\u80fd\u4f18\u5316\uff1a\u51cf\u5c11\u4e86\u51e0\u500d\u7684\u8017\u65f6\uff0c\u901a\u8fc7\u6279\u91cf\u83b7\u53d6\u7ebf\u7a0bCPU\u65f6\u95f4(from SJK)\u7b49\u65b9\u6cd5\n\t<\/li>\n<\/ul>\n<h2>\n\t\u4e3a\u5728\u751f\u4ea7\u73af\u5883\u8fd0\u884c\u4f18\u5316<br \/>\n<\/h2>\n<ul>\n<li>\n\t\t\u5220\u9664jvmtop\u4f1a\u9020\u6210\u5e94\u7528\u505c\u987f\u7684Profile\u9875\u9762\n\t<\/li>\n<li>\n\t\t\u5220\u9664jvmtop\u83b7\u53d6\u6240\u6709Java\u8fdb\u7a0b\u4fe1\u606f\uff0c\u6709\u7740\u4e0d\u786e\u5b9a\u6027\u7684Overview\u9875\u9762\n\t<\/li>\n<li>\n\t\t\u9ed8\u8ba4\u6253\u5370\u95f4\u9694\u8c03\u6574\u523010s\n\t<\/li>\n<li>\n\t\t\u663e\u793avjtop\u81ea\u8eab\u7684\u6d88\u8017\n\t<\/li>\n<\/ul>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=2824\">\u552f\u54c1\u4f1a vjtop \u6559\u7a0b<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u82e5\u4f60\u4e60\u60ef\u4ee5Top\u89c2\u5bdf&ldquo;OS\u6307\u6807\u53ca\u7e41\u5fd9\u7684\u8fdb\u7a0b&rdquo;\uff0c\u4e5f\u63a8\u8350\u4ee5VJTop\u89c2\u770b &ldquo;J [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[328,731,1613,314,657],"class_list":["post-2824","post","type-post","status-publish","format-standard","hentry","category-java","tag-gc","tag-jvm","tag-jvm-sandbox","tag-taobaojvm","tag-shared-memory"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/2824","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2824"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/2824\/revisions"}],"predecessor-version":[{"id":2825,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/2824\/revisions\/2825"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}