lkml.org 
[lkml]   [2007]   [Nov]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectMassive slowdown when re-querying large nfs dir
Date
There is a massive (3-18x) slowdown when re-querying a large nfs dir (2k+ 
entries) using a simple ls -l.

On 2.6.23 client and server running userland rpc.nfs.V2:
first try: time -p ls -l <2k+ entry dir> in ~2.5sec
more tries: time -p ls -l <2k+ entry dir> in ~8sec

first try: time -p ls -l <5k+ entry dir> in ~9sec
more tries: time -p ls -l <5k+ entry dir> in ~180sec

On 2.6.23 client and 2.4.31 server running userland rpc.nfs.V2:
first try: time -p ls -l <2k+ entry dir> in ~2.5sec
more tries: time -p ls -l <2k+ entry dir> in ~7sec

first try: time -p ls -l <5k+ entry dir> in ~8sec
more tries: time -p ls -l <5k+ entry dir> in ~43sec

Remounting the nfs-dir on the client resets the problem.

Any ideas?


Thanks!

--
Al

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-11-04 06:01    [W:0.877 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site