From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Steinborn Subject: Poor git write performance to NFS Date: Wed, 21 Oct 2015 15:14:59 +0200 Message-ID: <56278FD3.3010103@lrz.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Wed Oct 21 15:20:37 2015 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZotJe-0001vm-9i for gcvg-git-2@plane.gmane.org; Wed, 21 Oct 2015 15:20:30 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755014AbbJUNUR convert rfc822-to-quoted-printable (ORCPT ); Wed, 21 Oct 2015 09:20:17 -0400 Received: from postout1.mail.lrz.de ([129.187.255.137]:57232 "EHLO postout1.mail.lrz.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755002AbbJUNUO (ORCPT ); Wed, 21 Oct 2015 09:20:14 -0400 X-Greylist: delayed 311 seconds by postgrey-1.27 at vger.kernel.org; Wed, 21 Oct 2015 09:20:14 EDT Received: from lxmhs51.srv.lrz.de (localhost [127.0.0.1]) by postout1.mail.lrz.de (Postfix) with ESMTP id 3ngskF3l0bzycZ for ; Wed, 21 Oct 2015 15:15:01 +0200 (CEST) Authentication-Results: postout.lrz.de (amavisd-new); dkim=pass (2048-bit key) reason="pass (just generated, assumed good)" header.d=lrz.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lrz.de; h= content-transfer-encoding:content-type:content-type:mime-version :user-agent:date:date:message-id:subject:subject:from:from :received:received; s=postout; t=1445433301; bh=qrZWhjrcmMIQGgkx 8aySIjAYzY59BAwLv36Xgm06/Xs=; b=lobIoXphsygAaiw4oqTxZom9a8f6yL38 TViP2/T9FGF/nPCeaLK/sXRcUdNuZwSh1/Moc86QdSN9gT/aaVY2Q9fsngYxcjno DSgGLB8O1+8JMBNjJbW3nHR8YRgUeqRTCDGEttL60wsX/nzTOMXXz7d4lJ4i4JA/ C0jnThFWyjtXYgSwPt6tUN5kgKL9cNR4vyyA3HDZNEOe4berLqrtcDVBvpxxqihG WM6jJPD0uV/mW2tVMGLSMkwO/HsxhKIQqcNJ7Id9HmvK/XntoNW3nNtz0l70v+dm N9pbydxl9dzkiTeYbC8TYcpojtr5V0k5Ki9k9FgXST5wh0lA76bGEw== X-Virus-Scanned: by amavisd-new at lrz.de in lxmhs51.srv.lrz.de X-Spam-Flag: NO X-Spam-Score: -2.891 X-Spam-Level: X-Spam-Status: No, score=-2.891 tagged_above=-999 required=5 tests=[ALL_TRUSTED=-1, BAYES_00=-1.9, LRZ_FROM_PHRASE=0.001, LRZ_FROM_PRE_SUR=0.001, LRZ_FROM_PRE_SUR_PHRASE=0.001, LRZ_MSGID_AN_AN=0.001, LRZ_MSGID_HU8_HU7=0.001, LRZ_MSGID_MOZ=0.001, LRZ_MSGID_SPAM_68=0.001, LRZ_TO_SHORT=0.001, LRZ_UA_MOZ=0.001] autolearn=no Received: from postout1.mail.lrz.de ([127.0.0.1]) by lxmhs51.srv.lrz.de (lxmhs51.srv.lrz.de [127.0.0.1]) (amavisd-new, port 20024) with LMTP id UnXgzDdHwwrg for ; Wed, 21 Oct 2015 15:15:01 +0200 (CEST) Received: from badwlrz-cldst01.ws.lrz.de (unknown [IPv6:2001:4ca0:0:f000:fab1:56ff:febb:c1bd]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by postout1.mail.lrz.de (Postfix) with ESMTPSA id 3ngskF1LDVzyV2 for ; Wed, 21 Oct 2015 15:15:01 +0200 (CEST) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Hi, currently we are experiencing poor write performance when a repository=20 is pushed to a nfs volume. Interestingly, this seems to be a problem in= =20 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=20 reason for that problem? The tests are done on a Debian 8.2 VM. Please ask for specific details if they are neccessary. Thanks for your help! Best regards, Daniel Steinborn --=20 Daniel Steinborn Leibniz-Rechenzentrum Boltzmannstra=C3=9Fe 1 85748 Garching bei M=C3=BCnchen