[ofa-general] [PATCH] IB/ipoib: fix net queue lockup
Roland Dreier
rdreier at cisco.com
Thu May 1 08:07:18 PDT 2008
> I agree, but I want to have a larger buffer to absorb larger picks. For
> example, after applying this patch I tested how many times the net queue
> is stopped and woken up when running four streams of netperf, udp, small
> packets. When using the default 64 tx queue size it happened 500 times.
> When I used a 256 tx queue size it happened only 37 times. This makes me
> think that we have larger picks that a larger queue size can help
> handle.
OK, that makes sense -- although did you see any performance difference?
> Also looking for example on Broadcom bnx2 driver on my machine, it uses
> a 1000 tx queue len.
Isn't that the software queue above the hardware? (That's what
txqueuelen in ifconfig is reporting)
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