[CentOS] Slow NFS writes
nevis2us at infoline.su
Tue Oct 21 08:24:11 UTC 2008
> Client, Macintosh G4, OS X 10.4.11
> NFS Mount is done with the following options...
> -P (privileged ports)
> I tried doubling the size of the read/write windows to 65536 but it
> seemed to make little difference.
> Task, Read / Write 648 Megabyte Photoshop file (PSD)
> Win2K = Win2K server (slow), RAID 5, Symantec EndPoint (ugh), retiring
> this server
> AFP = Netatalk from new CentOS Server
> SMB = Samba from new CentOS Server
> NFS = see above options, same CentOS Server
> Copy To Win2K AFP SMB NFS
> 1m40.053s 0m22.566s 0m23.817s 2m11.849s
> Copy From Win2K AFP SMB NFS
> 1m34.478s 0m20.709s 0m20.823s 0m23.487s
> NFS read performance was slightly slower than AFP/SMB but the write
> performance was poor.
I had a similar problem with a freebsd box awhile ago
and the solution was to mount an nfs share with much lower
r/w buffer size (2048?). There also was something in the logs related to
nfs server timeouts or server not responding.
More information about the CentOS