From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: Poor git write performance to NFS
Date: Wed, 21 Oct 2015 11:20:17 -0700
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To: Daniel Steinborn <daniel.steinborn@lrz.de>
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In-Reply-To: <56278FD3.3010103@lrz.de> (Daniel Steinborn's message of "Wed, 21
	Oct 2015 15:14:59 +0200")
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Daniel Steinborn <daniel.steinborn@lrz.de> 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.