On Tue, 11 Dec 2007 00:25:55 -0500 "Jon Smirl" <jonsmirl@xxxxxxxxx> wrote: > Something is hurting bad with threads. 170 CPU minutes with one > thread, versus 195 CPU minutes with four threads. > > Is there a different memory allocator that can be used when > multithreaded on gcc? This whole problem may be coming from the memory > allocation function. git is hardly interacting at all on the thread > level so it's likely a problem in the C run-time. You might want to try Google's malloc, it's basically a drop in replacement with some optional built-in performance monitoring capabilities. It is said to be much faster and better at threading than glibc's: http://code.google.com/p/google-perftools/wiki/GooglePerformanceTools http://google-perftools.googlecode.com/svn/trunk/doc/tcmalloc.html You can LD_PRELOAD it or link directly. Cheers, Sean - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
