On Tue, 2019-08-27 at 10:56 +0200, Uwe Kleine-König wrote: > On Tue, Aug 27, 2019 at 10:41:11AM +0200, SZEDER Gábor wrote: > > On Tue, Aug 27, 2019 at 10:15:59AM +0200, Uwe Kleine-König wrote: > > > I have a problem here with git being slow in some situations. > > > Using git 2.23.0 (from Debian) the effect is: > > > > > > ukl@xxxxxxxx:/ptx/src/git/linux.git$ sudo sh -c "echo 3 > /proc/sys/vm/drop_caches"; time git show v5.2 > > > tag v5.2 > > > ... > > > > > > real 0m12.727s > > > user 0m0.300s > > > sys 0m0.371s > > > > > > But to get the actual data isn't the problem: > > > > > > ukl@xxxxxxxx:/ptx/src/git/linux.git$ sudo sh -c "echo 3 > /proc/sys/vm/drop_caches"; time git show v5.2 | cat > > > tag v5.2 > > > ... > > > > > > real 0m0.764s > > > user 0m0.014s > > > sys 0m0.020s > > > > > > > How does 'git --no-pager show v5.2' perform? If it's as fast as the > > case piping the output to cat, then look into what pager and pager > > options you use. > > ukl@xxxxxxxx:/ptx/src/git/linux.git$ sudo sh -c "echo 3 > /proc/sys/vm/drop_caches"; time git --no-pager show v5.2 > tag v5.2 > ... > > real 0m13.225s > user 0m0.355s > sys 0m0.336s > > So this doesn't seem to be the problem. Also the local configuration > can be ruled out: > > ukl@xxxxxxxx:/ptx/src/git/linux.git$ sudo sh -c "echo 3 > /proc/sys/vm/drop_caches"; time env GIT_CONFIG_NOSYSTEM=1 HOME=/nonexistant XDG_CONFIG_HOME=/nonexistant git --no-pager show --no-color v5.2 > tag v5.2 > ... > > real 0m13.587s > user 0m0.335s > sys 0m0.336s > > Thanks > Uwe Have you checked strace output? I see a directory walk through .git/refs and .git/packed-refs if the output is not redirected. regards Philipp
