From: Daniel Steinborn Date: Thu, 22 Oct 2015 13:04:16 GMT Subject: Re: Poor git write performance to NFS Message-ID: <5628DED0.3050002@lrz.de> In-Reply-To: Hi, thank you for your answer. I removed the git Debian package and compiled v2.6.2 manually. The performance is much better now (on the same level als v1.7.12.4). We opened a Debian bug report, to request a git version >= 2.6 to be backported to jessie: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=802661 The issue is now solved for us, thanks again for your quick response. Best regards, Daniel Steinborn Am 21.10.2015 um 20:20 schrieb Junio C Hamano: > Daniel Steinborn writes: > >> currently we are experiencing poor write performance when a repository >> is pushed to a nfs volume. Interestingly, this seems to be a problem >> in newer git versions: >> >> v1.7.12.4: Very good performance >> >> v2.1.4: Bad performance, up to 6 times slower >> >> Are there any changed default settings or new features that can be the >> reason for that problem? >> >> Please ask for specific details if they are neccessary. > Between 1.7.12.x series and v2.1.4, there are more than two years' > worth of changes, so it is unreasonable for anybody to expect that > such a question can be answered in a meaningful way. > > Have you tried more recent versions yet? 2.1.x series is over a > year old, and I am reasonably sure there have been tons of "earlier > we did X for correctness, which unfortunately made things slower, > and this ensures the same correctness in a different way that is > much more performant" fixes since then. -- Daniel Steinborn Leibniz-Rechenzentrum Boltzmannstraße 1 85748 Garching bei München