http://creativecommons.org/licenses/by-sa/2.5/ http://swik.net/tcmalloc tcmalloc http://swik.net/tcmalloc http://swik.net/MySQL/Planet+MySQL/On+valgrind+and+tcmalloc/b3xs1 <p>I <a href="http://dammit.lt/2006/12/06/google-perftools-tcmalloc-squid/">already wrote</a> about <a href="http://goog-perftools.sourceforge.net/doc/tcmalloc.html">tcmalloc</a>, and how it helped with memory fragmentation. This time had some experience with extended features - memory profiling and leak checker. With tcmalloc it is possible to get an <a href="http://noc.wikimedia.org/~midom/mem.pdf">overview</a> as well as detailed reports of what areas of memory are allocated for what uses. Even more, it can detect and <a href="http://flake.defau.lt/tcmallocheap.pdf">report</a> any memory that leaked. Of course, <a href="http://valgrind.org/">valgrind</a> does that too. With one slight difference:</p> <ul> <li>valgrind slows down applications 20-40 times (my tests ran 4s instead of 14ms)</li> <li>tcmalloc does not. Same 14ms.</li> </ul> <p>I wrote some MySQL UDFs for profiling and heap checking management, so can extract per-thread single-test stuff. Will try to clean up and release. Would be shame not to.</p> Thu, 27 Mar 2008 04:49:41 -0700 http://swik.net/opensource/del.icio.us+tag%2Fopensource/Google+Code+-+Updates%3A+tcmalloc+success/qxeu Domas Mituzas, a MySQL employee and Wikipedia hacker, just posted a great writeup of his recent experience using tcmalloc (an open source Google perftool) to debug some nasty memory leaks Sat, 09 Dec 2006 02:56:08 -0800