{"id":784,"date":"2021-12-14T23:36:23","date_gmt":"2021-12-14T15:36:23","guid":{"rendered":"https:\/\/blog.cauchyschwarz.com\/?p=784"},"modified":"2021-12-14T23:36:28","modified_gmt":"2021-12-14T15:36:28","slug":"systemtap","status":"publish","type":"post","link":"https:\/\/blog.cauchyschwarz.com\/?p=784","title":{"rendered":"Systemtap"},"content":{"rendered":"\n<p>\u5728Gregg\u4ecb\u7ecdLinux Tracer\u7684<a href=\"http:\/\/www.brendangregg.com\/blog\/2015-07-08\/choosing-a-linux-tracer.html\">\u6587\u7ae0<\/a>\u4e2d\uff0c\u4e00\u5171\u4ecb\u7ecd\u4e869\u79cd\u5de5\u5177\uff0c\u4e2a\u4eba\u6253\u7b97\u8ba4\u771f\u5b66\u4e60\u638c\u63e1\u5176\u4e2d\u7684\u56db\u79cd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>ftrace<\/strong><\/li><li><strong>perf_events<\/strong><\/li><li><strong>eBPF<\/strong><\/li><li><strong>SystemTap<\/strong><\/li><\/ul>\n\n\n\n<p><strong>SystemTap<\/strong>\u88abGregg\u79f0\u4e3a\u5176\u4e2d\u6700\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u90a3\u4e48\u5c31\u5148\u4ece<strong>SystemTap<\/strong>\u5f00\u59cb\u5165\u624b\u5427\uff01<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E5%AE%89%E8%A3%85%E4%B8%8E%E4%BD%BF%E7%94%A8\">\u5b89\u88c5\u4e0e\u4f7f\u7528<\/h1>\n\n\n\n<p>\u6211\u662f18.04\u7684ubuntu\u7cfb\u7edf\uff0c\u7167\u7740ubuntu\u7684<a href=\"https:\/\/wiki.ubuntu.com\/Kernel\/Systemtap\">SystemTap\u5305\u7684\u4ecb\u7ecd\u9875\u9762<\/a>\u5b89\u88c5\u7684\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">sudo apt install systemtap\n<\/code><\/pre>\n\n\n\n<p>\u8bb0\u5f97\u5b89\u88c5\u673a\u5668\u5185\u6838\u7684debug symbols\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">sudo apt-get install linux-image-$(uname -r)-dbgsym\n<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a\u6211\u662f\u4e4b\u524d\u6709\u5b89\u88c5\u8fc7debug symbols\u7684\u5305\uff0c\u6240\u4ee5\u5c31\u7565\u8fc7\u589e\u52a0\u76f8\u5e94\u6e90\u7684\u6b65\u9aa4\u3002\u5982\u679c\u673a\u5668\u6ca1\u6709\u6dfb\u52a0\u8fc7\u8fd9\u4e2a\u4e0b\u8f7d\u5185\u6838debug symbols\u7684\u6e90\u7684\u8bdd\uff0c\u6309\u7167\u8fd9\u4e2a\u9875\u9762\u6307\u793a\u64cd\u4f5c\u5c31\u597d\u4e86\u3002<\/p>\n\n\n\n<p>\u5b89\u88c5\u597d\u540e\uff0c\u53ef\u4ee5\u6267\u884c<code>stap --help<\/code>\u68c0\u67e5\u662f\u5426\u5b89\u88c5\u6210\u529f\u3002debug symbols\u4e5f\u5b89\u88c5\u597d\u540e\uff0c\u5c31\u53ef\u4ee5\u8dd1\u4e00\u4e2a\u811a\u672c\u68c0\u6d4b\u4e0b\u662f\u5426\u80fd\u6b63\u5e38\u5de5\u4f5c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"\">#! \/usr\/bin\/env stap\n\nprobe kernel.function(\"*@net\/socket.c\").call {\n  printf (\"%s -&gt; %s\\n\", thread_indent(1), probefunc())\n}\nprobe kernel.function(\"*@net\/socket.c\").return {\n  printf (\"%s &lt;- %s\\n\", thread_indent(-1), probefunc())\n}\n\n<\/code><\/pre>\n\n\n\n<p>\u8bb0\u5f97\u6267\u884c\u65f6\u8981\u6709root\u6743\u9650\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"%E8%84%9A%E6%9C%AC%E8%AF%AD%E8%A8%80\">\u811a\u672c\u8bed\u8a00<\/h1>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Gregg\u4ecb\u7ecdLinux Tracer\u7684\u6587\u7ae0\u4e2d\uff0c\u4e00\u5171\u4ecb\u7ecd\u4e869\u79cd\u5de5\u5177\uff0c\u4e2a\u4eba\u6253\u7b97\u8ba4\u771f\u5b66\u4e60\u638c\u63e1\u5176\u4e2d\u7684\u56db\u79cd\uff1a ftrace perf_events eBPF SystemTap SystemTap\u88abGreg&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[81],"class_list":["post-784","post","type-post","status-publish","format-standard","hentry","category-10","tag-systemtap"],"_links":{"self":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=784"}],"version-history":[{"count":1,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/784\/revisions"}],"predecessor-version":[{"id":785,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/784\/revisions\/785"}],"wp:attachment":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}