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[ILUG] RE: [NFS] NFS throughput drops with SCSI activity

[ILUG] RE: [NFS] NFS throughput drops with SCSI activity

Kenn Humborg kenn at bluetree.ie
Thu Apr 26 15:12:14 IST 2001


> On Thu, Apr 26, 2001 at 12:48:59PM +0100, Kenn Humborg wrote:
> 
> > Machine: HP Vectra PPro 200MHz dual-proc board with 1 CPU Kernel:
> > 2.2.18 uniprocessor Ethernet: Netgear FA311 100BaseT
> > Netgear-supplied driver SCSI: Adaptec AIC-7880U on-board aic7xxx
> > driver DISK: Seagate ST32171N
> 
> > However, while writing to the disk, NFS throughput drops
> > to about 0.5MB/s and I get "server timed out" & "server OK"
> > messages a lot.  Sometimes NFS practically halts.  (Note
> 
> 	I have had almost identical issues on a machine running a
> 	Netgear FA311 adapter with no SCSI, just IDE.  I swapped out
> 	the NIC for an eepro100 and they went away entirely.
> 
> 	In short, I highly recommend a new NIC.  Either the drivers
> 	(I have tried both the netegar one and the one in 2.4.x)
> 	don't work properly or the hardware doesn't.

Sigh.

As always the old adage "you get what you pay for" proves true...

Later,
Kenn





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