Re: nfs write speed performance... still

[Antoine Jacoutot <ajacoutot_(_at_)_lphp_(_dot_)_org>]

On Friday 05 November 2004 17:21, you wrote:

All right people.
First, I want to thank everybody who tried to help me with this issue, I got a 
lot of responses, I really appreciate. I also got a mail from M. Theo who 
told me that this problem was xl driver specific, I really thank him for 
confirming that.

Now, I switched network cards, and for now, the best speed I get is with a dc 
card on the nfs server and a vr card on the client (I also tried with a dc on 
the client but the performance was not as good).
Here is the card info for the server:
dc0 at pci3 dev 4 function 0 "DEC 21142/3" rev 0x41: irq 10, address 
00:80:c8:cf:d9:1d
nsphyter0 at dc0 phy 1: DP83843 10/100 media interface, rev. 0

The read speed did improve (around 5 to 6 Mb), but this was no the problem.
But now the write speed is even worse :(
It is so slow and blocking that I can't even do a 'ls' in NFS share while 
writing to another.

$ du -ch file.test
76.4M   file.test

--> write from openbsd_nfs_client to openbsd_nfs_server
 126.87s real     0.01s user     0.95s system => before: 102.43s real

I though this could be because of bad cables... I switched them.
I though this could be because of a bad switch... I tested transfers using a 
crossed-cable.
Nothing different.

Somebody questioned my setup, and I totally agree... but where should I look ?
To me, everything looks fine.

Thanks a lot.
Regards,

Antoine