[openib-general] Performance Degradation with OFED v. Voltaire

[Bernadat, Philippe]

> Have you tried running with
> 
> options ib_mthca tune_pci =1
> 

My understanding is that this is not required anymore with OFED-1.1 - It
used to make a siginifciant differences with OFED-1.0, but I didn't
observe it with OFED-1.1

And again, the user mode performance if comparable between VIB and OFED.

Philippe

> -----Original Message-----
> From: Tziporet Koren [mailto:tziporet at dev.mellanox.co.il] 
> Sent: Thursday, December 14, 2006 12:30 PM
> To: Bernadat, Philippe
> Cc: Eric Barton; Roland Dreier; Matt Leininger; 
> openib-general at openib.org; Bernadat, Philippe
> Subject: Re: [openib-general] Performance Degradation with 
> OFED v. Voltaire
> 
> Philippe Bernadat wrote:
> > Roland,
> >
> > Attached are the two lspci outputs.
> >
> > The only differences I see are:
> >
> > [philippe at hamish o2ib]$ diff lspci.vib lspci.ofed
> > 1d0
> > < pcilib: Resource 5 in 
> /sys/bus/pci/devices/0000:00:1f.1/resource has 
> > a 64-bit address, ignoring
> > 40c39
> > < 50: 03 60 ff 7f 11 11 00 00 00 00 00 00 00 00 00 00
> > ---
> > > 50: 03 60 ff ff 11 11 00 00 00 00 00 00 00 00 00 00
> > [philippe at hamish o2ib]$
> >
> Have you tried running with
> 
> options ib_mthca tune_pci =1
> 
> Tziporet
> 
>