# gitk startup time improvement 4 messages from 2007-08-30 to 2007-08-30. Participants: Paul Mackerras, David Tweed, Bart Trojanowski, Alex Riesen. Thread: https://gitlist.dev/t/9705 ## Paul Mackerras, 2007-08-30 12:01 Subject: gitk startup time improvement Message-ID: <18134.45449.527540.940620@cargo.ozlabs.ibm.com> URL: https://gitlist.dev/e/18134.45449.527540.940620%40cargo.ozlabs.ibm.com ``` In the 'dev' branch of the gitk.git repository at git://git.kernel.org/pub/scm/gitk/gitk.git there is now a version of gitk that is much faster at starting up than the standard version. Firstly, it doesn't lay out the whole graph, only the parts that get displayed (plus a little bit either side), and secondly, it caches the topology information that is used to determine which tags a commit precedes and follows, and which branches it is on. I'd like people to try it. Comments, bug reports, patches etc. are welcome, of course. Paul. ``` ## David Tweed, 2007-08-30 15:16 Subject: Re: gitk startup time improvement Message-ID: URL: https://gitlist.dev/e/e1dab3980708300816l5fee87a1pade9701c1bfb165%40mail.gmail.com In-Reply-To: <18134.45449.527540.940620@cargo.ozlabs.ibm.com> ``` On 8/30/07, Paul Mackerras wrote: > I'd like people to try it. Comments, bug reports, patches etc. are > welcome, of course. My main repo is too small to show performance issues as of the gitk version included in 1.5.3.rc5, but FWIW the startup times for both 1.5.3.rc5 & your branch are both less than 1s (with warm cache). -- cheers, dave tweed__________________________ david.tweed@gmail.com Rm 124, School of Systems Engineering, University of Reading. "we had no idea that when we added templates we were adding a Turing- complete compile-time language." -- C++ standardisation committee ``` ## Bart Trojanowski, 2007-08-30 16:42 Subject: Re: gitk startup time improvement Message-ID: <20070830164202.GR10772@jukie.net> URL: https://gitlist.dev/e/20070830164202.GR10772%40jukie.net In-Reply-To: <18134.45449.527540.940620@cargo.ozlabs.ibm.com> ``` * Paul Mackerras [070830 08:01]: > I'd like people to try it. Comments, bug reports, patches etc. are > welcome, of course. I am getting about a 4x improvement (1s vs 4s) running the 'dev' gitk on the kernel tree, with warm cache. -Bart -- WebSig: http://www.jukie.net/~bart/sig/ ``` ## Alex Riesen, 2007-08-30 20:42 Subject: Re: gitk startup time improvement Message-ID: <20070830204222.GB15405@steel.home> URL: https://gitlist.dev/e/20070830204222.GB15405%40steel.home In-Reply-To: <18134.45449.527540.940620@cargo.ozlabs.ibm.com> ``` Paul Mackerras, Thu, Aug 30, 2007 14:01:13 +0200: > In the 'dev' branch of the gitk.git repository at > > git://git.kernel.org/pub/scm/gitk/gitk.git > > there is now a version of gitk that is much faster at starting up than > the standard version. Firstly, it doesn't lay out the whole graph, > only the parts that get displayed (plus a little bit either side), and > secondly, it caches the topology information that is used to determine > which tags a commit precedes and follows, and which branches it is on. > > I'd like people to try it. Comments, bug reports, patches etc. are > welcome, of course. Well, it works. The improvements are not very noticeable, though (I tried git and kernel repos). Besides, there is a slight delay (~1-2 sec) in kernel repo (writing the cache out?) on exit. I used gitk from this commit: commit 5cd15b6b7f87dc61f729ad31a682ffc394560273 Author: Paul Mackerras Date: Thu Aug 30 21:54:17 2007 +1000 gitk: Add a cache for the topology info BTW, what should happen if I try running many gitks in the same repo? Is the cache safe for concurrent writing by them? Is it NFS-safe? ```