[openfabrics-ewg] OFED procedures

Michael S. Tsirkin mst at mellanox.co.il
Mon Oct 9 23:05:47 PDT 2006


In that the SM does not obey the MTU selector? It could.

Can you try going into cm.c cm_init_qp_rtr_attr, and
printk the value of qp_attr->path_mtu near after it is set?


Quoting r. Scott Weitzenkamp (sweitzen) <sweitzen at cisco.com>:
> Subject: RE: [openfabrics-ewg] OFED procedures
> 
> tavor_quirk=1 with rdma_cm didn't help, could this be a Cisco SM issue?
> 
> Scott Weitzenkamp
> SQA and Release Manager
> Server Virtualization Business Unit
> Cisco Systems
>  
> 
> > -----Original Message-----
> > From: Michael S. Tsirkin [mailto:mst at mellanox.co.il] 
> > Sent: Wednesday, October 04, 2006 12:57 PM
> > To: Scott Weitzenkamp (sweitzen)
> > Cc: Aviram Gutman; Open Fabrics; Eitan Zahavi
> > Subject: Re: [openfabrics-ewg] OFED procedures
> > 
> > Quoting Scott Weitzenkamp (sweitzen) <sweitzen at cisco.com>:
> > > Subject: RE: [openfabrics-ewg] OFED procedures
> > > 
> > > PCI-X max throughput is still about 30% below what is was 
> > before.  More
> > > details are in http://openib.org/bugzilla/show_bug.cgi?id=108.
> > 
> > Oh, that will be the tavor MTU quirk.
> > You have 2 options:
> > - activate the tavor quirk workaround in opensm (if you use opensm)
> >   Eitan, can you pls provide guidance on how to enable?
> > - activate the tavor quirk workaround in cma
> >   set tavor_quirk=1 module parameter for the rdma_cm module
> > 
> > -- 
> > MST
> > 
> 

-- 
MST




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