NFS performances on 5.1

[Harald Schmalzbauer]

On Saturday 31 January 2004 17:11, Melvyn Sopacua wrote:
> On Saturday 31 January 2004 16:02, Jacques Beigbeder wrote:
> > 	time dd=/fileserver/aFile of=/fileserver/otherFile bs=32768
> >
> >
> > NFS client	time		# pkts
> > =============== =======         ======
> > Solaris		3.11s		2296
> > Linux Redhat9	2.42s		1929
> > FreeBSD 5.1	19.72s		14887	<!!!
> > FreeBSD 4.9	3.04s		6380
> > FreeBSD 5.2	2.98s		5941
> >
> > All FreeBSD uses: mount_nfs -U -3 -r 32768 -w 32768 ...
> >
> > Question: is there any tuning on 5.1 to get better performances?
>
> Did you read the notes in src/UPDATING saying:
> NOTE TO PEOPLE WHO THINK THAT FreeBSD 5.x IS SLOW:

Could you pleas explain that numbers? I did almost the same test and found the 
following values in MByte/s:

FBSD 5.2 -> 5.2 / 4,6    (Client 1,1G Cel, Server C3 800)
Linux    -> 5.2 / lockup (Client 733 PIII, Server C3 800)
FBSD 4.9 -> 5.2 / 2,8    (CLient 233MMX, Server C3 800)

FBSD 5.2 -> 5.1 / 6,5    (Client 1,1G Cel, Server C3 800)
Linux    -> 5.1 / 9,8    (Client 733 PIII, Server C3 800)

FBSD 5.2 -> 4.9 / 5,8    (Client 1,1G Cel, Server C3 800)
Linux    -> 4.9 / 9,8    (Client 733 PIII, Server C3 800)
FBSD 4.9 -> 4.9 / 3,0    (Client 233MMX, Server C3 800)

DragonFlyBSD as Server resulted in about 5% more performance than 4.9 (linear 
exept Linux Client as it performs with the maximum Ethernet Speed)

My tests were without modifying any rsize/wsize. But even with (rw)size 32k i 
had expected to be able to transfer about 9 MByte/s from a 233MMX box. 
3MByte/s is absolutely lousy. What hardware do we need for just tranfsering 
bytes? 1GHz? I think 233 MHz with 64MB for OS should be more than enough. 
Regrettably I haven't had time to install a Linux on the 233 box.

Btw. Linux = DebWoody (2.4.22) and all clients have fxp interfaces!

Summary: 5.1 as server was a lot faster than 5.2 as server so is 4.9. Fastest 
was DragonFlyBSD but anyhow, just Linux as Client does a reasonable job. And 
not to forget the broken Linux -> 5.2 support!!!

-Harry
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