From: Brandon Casey <casey@nrlssc.navy.mil>
Date: Fri, 14 Nov 2008 00:14:13 GMT
Subject: Re: hosting git on a nfs
Message-ID: <371xaQfxsMMQ-9LK24q-nhcS4loEggn8Cj3J1IzfMbzzYDGE6HKbQQ@cipher.nrlssc.navy.mil>
In-Reply-To: <alpine.LFD.2.00.0811131518070.3468@nehalem.linux-foundation.org>



Second version.


Hot cache (over NFS):

Before:

0.01user 0.11system 0:00.13elapsed 95%CPU
0.01user 0.11system 0:00.13elapsed 96%CPU
0.01user 0.12system 0:00.13elapsed 97%CPU

After:

0.01user 0.09system 0:00.11elapsed 95%CPU
0.01user 0.09system 0:00.11elapsed 95%CPU
0.01user 0.09system 0:00.11elapsed 95%CPU


Cold cache* (over NFS):

Before:

0.01user 0.31system 0:04.40elapsed 7%CPU
0.01user 0.31system 0:06.47elapsed 5%CPU
0.01user 0.26system 0:04.19elapsed 6%CPU
0.01user 0.30system 0:04.99elapsed 6%CPU

After:

0.01user 0.46system 0:01.39elapsed 34%CPU
0.01user 0.41system 0:00.88elapsed 47%CPU
0.01user 0.45system 0:01.16elapsed 40%CPU
0.01user 0.45system 0:00.99elapsed 47%CPU
0.01user 0.45system 0:01.02elapsed 45%CPU


* Note: I can't do 'echo 3 > /proc/sys/vm/drop_caches', so cold
  cache means 'sleep 60' between git diff (30 wasn't long enough).

-brandon