From: Linus Torvalds Date: Thu, 23 Jul 2009 02:28:40 GMT Subject: Re: Performance issue of 'git branch' Message-ID: In-Reply-To: <20090723020238.GA8948@Pilar.aei.mpg.de> On Thu, 23 Jul 2009, Carlos R. Mafra wrote: > > Is there another way to check what is going on with that anomalous lstat()? I really don't think it's the lstat any more. Your directories look small and simple, and clearly the indexing made no difference. See earlier email about using "strace -T" instead of "-tt". Also, I sent you a patch to try out just a minute ago, I think that may be it. > [ perhaps I will try 'perf' after I read how to use it ] I really like 'perf' (it does what oprofile did for me, but without the headaches), but it doesn't help with IO profiling. I've actually often wanted to have a 'strace' that shows page faults as special system calls, but it's sadly nontrivial ;( Linus