[openib-general] why sdp connections cost so much memory

Michael S. Tsirkin mst at mellanox.co.il
Mon Sep 11 04:05:24 PDT 2006


Quoting r. zhu shi song <zhushisongzhu at yahoo.com>:
> Subject: Re: why sdp connections cost so much memory
> 
> > You should not need this change with the scale patch
> > I posted - after applying
> > this, and setting the scale parameter to 0x1, each
> > connection should use around
> > 128K for RX. Please confirm.
> Just setting the scale parameter to 0x1, memory
> reduction is OK.  But there occurred one bug,
> sometimes my kernel crashed.

Shouldn't happen. Backtrace?

> So I think PRE POST buf
> size should be changed either.
>   zhu

Hmm. I don't really see how this would help.
Is it true that changing just the RX size fixes the crashes for you?
If yes I'd like to investigate.

-- 
MST




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