Strace in 60 lines of Go | HackerNoon
Too Long; Didn't Read<em>This post is a walk-through of the simple </em><a href="http://github.com/lizrice/strace-from-scratch" target="_blank"><em>strace implementation</em></a><em> I wrote during my </em><a href="https://gophercon.com/speakers/27" target="_blank"><em>GopherCon talk, A Go Programmer’s Guide to Syscalls</em></a><em>. You’ll find the code </em><a href="http://github.com/lizrice/str
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興味ãŒã‚ã£ã¦èª¿ã¹ã¦ã„ãŸã‚‰ã€å°‘ã—ã ã‘分ã‹ã£ãŸã®ã§ã¾ã¨ã‚ã¦ãŠãã¾ã™ã€‚当然間é•ã£ãŸç®‡æ‰€ã‚‚ã‚ã‚‹ã€ã‚ã¨è€ƒæ…®ãŒæ¼ã‚Œã¦ã„る箇所もã‚ã‚‹ã‹ã¨æ€ã„ã¾ã™ã®ã§ãƒ„ッコミをãŠé¡˜ã„ã—ã¾ã™â€¦ ptrace(2) システムコール strace ã®æ ¸ã¨ãªã‚‹ã‚·ã‚¹ãƒ†ãƒ コール㯠ptrace(2) ã§ã‚る。ptrace(2)を用ã„ã‚‹ã“ã¨ã§ã€ã‚るプãƒã‚»ã‚¹ã‚’別ã®ãƒ—ãƒã‚»ã‚¹ã‹ã‚‰ç›£è¦–ã—ã€ã‚·ã‚°ãƒŠãƒ«ã”ã¨ã«åœæ¢ã—ã¦ãƒ¬ã‚¸ã‚¹ã‚¿ã‚„メモリã®çŠ¶æ…‹ã‚’観察ã—ãŸã‚Šå¤‰æ›´ã—ãŸã‚Šã§ãる。gdbã®ã‚ˆã†ãªãƒ‡ãƒãƒƒã‚¬ã®ãƒ–レークãƒã‚¤ãƒ³ãƒˆã€ã‚ã‚‹ã„ã¯ã¾ã•ã«straceã®ã‚ˆã†ãªç›®çš„ã§åˆ©ç”¨ã•ã‚Œã‚‹ã€‚ 大ã¾ã‹ãªåˆ©ç”¨æ–¹æ³•ã¨ã—ã¦ã¯ã€è¦ªãƒ—ãƒã‚»ã‚¹ã® ptrace(PTRACE_ATTACH, pid, ...) （ã¾ãŸã¯åプãƒã‚»ã‚¹ã® ptrace(PTRACE_TRACEME, 0...)）ã«ã‚ˆã‚Šãƒˆãƒ¬ãƒ¼ã‚¹ãŒé–‹å§‹ã—ã€wait()ãªã©ã§åœæ¢ã‚’å¾…ã£ã¦ã‹ã‚‰æ§˜ã€…ãªè¨å®šã‚’親ã‹ã‚‰é€ã‚Šã€ ptrace(PTRAC
Strace Analyzer
Introduction I’ve written a number of articles around the web on the subject of using strace to get information about the IO in your application. But the hard thing is how to take seemingly endless lines in the output file and extract useful information. I learned at Panasas that you can take that strace data and extract useful IO information. For example you can extract a great deal of statistica
Redisã§ãƒã‚°ã®æ›¸ãè¾¼ã¿ãŒblockを引ãèµ·ã“ã™ - 酒日記 ã¯ã¦ãªæ”¯åº—
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Perlã§strace -p pidã—ã¦ç›®çš„ã®ã‚·ã‚¹ãƒ†ãƒ コールãŒæ¥ãŸã‚‰çµ‚了ã™ã‚‹ - blog.nomadscafe.jp
riywoã•ã‚“ã®ã€ŒPerlã§ssh tail -fã—ã¦ç›®çš„ã®è¡ŒãŒæ¥ãŸã‚‰çµ‚了ã™ã‚‹ã€ã«ä¾¿ä¹—ã™ã‚‹ã‚³ãƒã‚¿ã€‚ ãƒã‚°ã‚’tailã—ãªãŒã‚‰(ã»ã¼)リアルタイムã§è§£æžã—ã¦ã„ãworkerã®å‡¦ç†ãŒã©ã‚Œãらã„é…延ã—ã¦ã„ã‚‹ã®ã‹ç¢ºèªã—ã¦ã€ãれをgrowthforecastã§ã‚°ãƒ©ãƒ•åŒ–ã—ãŸã„ãªã¨æ€ã£ãŸã®ã§ä»¥ä¸‹ã®ã‚ˆã†ãªã‚¹ã‚¯ãƒªãƒ—トを書ã„ã¦cronã§å®Ÿè¡Œã—ã¦ã„るよã¨ã„ã†è©± #!/usr/bin/perl use strict; use Time::Piece; use LWP::UserAgent; my $worker = `/usr/bin/pgrep worker.pl`; chomp($worker); die "couldnot find worker pid" unless $worker; pipe my $logrh, my $logwh or die "Died: failed to create pipe
å›°ã£ãŸã¨ãã®straceã¨daemontoolsã®çµ„ã¿åˆã‚ã› - As a Futurist...
レスãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ ãŒé‡è¦ãªã‚µãƒ¼ãƒ“スをやã£ã¦ã‚‹ã¨ã€ã€Œç†ç”±ã¯ã‚ã‹ã‚‰ãªã„ã‘ã©ãªãœã‹é…ã„。調ã¹ã‚ˆã†ã€ã£ã¦ãªã‚‹ã“ã¨ãŒå¤šã„ã¨æ€ã„ã¾ã™ã€‚調ã¹æ–¹ã¯ã„ã‚ã‚“ãªã‚¢ãƒ—ãƒãƒ¼ãƒãŒã‚ã‚‹ã¨æ€ã„ã¾ã™ãŒã€Linux ã®å ´åˆstraceã¨ã„ã†ã‚³ãƒžãƒ³ãƒ‰ãŒè¶…絶便利ã§ã™ã€‚ strace is a system call tracer, i.e. a debugging tool which prints out a trace of all the system calls made by a another process/program. strace | Free Development software downloads at SourceForge.net strace ã¨ã¯ï¼Ÿ straceã¯ãƒ—ãƒã‚»ã‚¹ãŒç™ºè¡Œã™ã‚‹ã‚·ã‚¹ãƒ†ãƒ コールをトレースã§ãã¾ã™ã€‚システムコールã¨ã„ã†ã®ã¯ãƒ—ãƒã‚»ã‚¹ãŒã‚«ãƒ¼ãƒãƒ«ã«ä½œæ¥ã‚’ä¾é ¼ã™ã‚‹ API ã¿ãŸã„ãªã‚‚ã®
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$Id: readingcode.html,v 1.13 2003/12/06 00:01:08 aamine Exp $ 2006-05-02 gonzui è¿½åŠ ã€‚thanks: 冨山ã•ã‚“ 2003-12-03 ltrace 㨠sotrace ã‚’è¿½åŠ 2003-12-03 ツールã®ã¨ã“ã‚ã« DDD ã‚’è¿½åŠ ã€‚thanks: 和田ã•ã‚“ 2003-05-27 VCG, SXT ãªã©ã«ã¤ã„ã¦è¿½åŠ 。thanks: 梅沢ã•ã‚“ 2003-05-27 ã“れもã™ã£ã‹ã‚Šå¿˜ã‚Œã¦ã„㟠strace, ktrace, truss, etags ãªã©ã«ã¤ã„ã¦è¿½åŠ 2002-08-30 ã™ã£ã‹ã‚Šå¿˜ã‚Œã¦ã„㟠ctags ã‚’è¿½åŠ 2002-07-07 匿å希望ã•ã‚“ã‹ã‚‰ãƒ¡ãƒ¼ãƒ«ã§ã„ãŸã ã„ãŸæƒ…å ±ã‚’è¿½åŠ (動的コールグラフ) 2002-06-13 日記経由ã§ã„ãŸã ã„ãŸæ„見をもã¨ã«æ–‡ç« ã‚’è¿½åŠ ã€‚thanks: 柳å·ã•ã‚“ã€ã¾ã¤ã‚‚ã¨ã•
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