On Thu, Aug 03, 2017 at 11:33:29AM +0200, Michal Privoznik wrote: > On 08/03/2017 09:57 AM, Daniel P. Berrange wrote: > > On Thu, Aug 03, 2017 at 09:16:13AM +0200, Michal Privoznik wrote: > >> So I was checking out the repo the other day and it took ages. So it got > >> me thinking what might be the problem. Looks like a part of it is that > >> our pack is split among ~250 files. Therefore when somebody does > >> checkout git needs to repack it into a single pack every time. And this > >> may take ages on such slow processor as Atom is. However, reading some > >> docs on this it looks like 'git gc --aggressive' is not advised rather > >> than 'git repack'. > > > > I created a 'tmp' repo and ran 'repack' on it, but afaict, there's no > > appreciable difference. > > In fact, there is. I just finished running 'git repack -a -d' over the > 'tmp' repo and here are the results: > > $ time git clone git://libvirt.org/libvirt.git libvirt_temp.git > Cloning into 'libvirt_temp.git'... > remote: Counting objects: 236385, done. > remote: Compressing objects: 100% (38422/38422), done. > remote: Total 236385 (delta 200296), reused 232761 (delta 196975) > Receiving objects: 100% (236385/236385), 297.08 MiB | 5.55 MiB/s, done. > Resolving deltas: 100% (200296/200296), done. > > real 2m40.089s > user 1m2.831s > sys 0m2.970s > > $ time git clone git://libvirt.org/tmp tmp.git > Cloning into 'tmp.git'... > remote: Counting objects: 236365, done. > remote: Compressing objects: 100% (35400/35400), done. > remote: Total 236365 (delta 200277), reused 236065 (delta 199977) > Receiving objects: 100% (236365/236365), 297.19 MiB | 6.17 MiB/s, done. > Resolving deltas: 100% (200277/200277), done. > > real 1m16.209s > user 1m7.782s > sys 0m2.940s > > In the first case, the network transmission took ~54s, so prep work on > server took ~1m45s. In the second case, network transmission took 48s, > so prep work took just ~28s. Therefore I think it makes sense to run the > command. If nobody objects I can do that later today. Yep, that's fine with me. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
