Thread (37 messages) 37 messages, 8 authors, 2007-09-14

[ofa-general] Re: [PATCH 0/9 Rev3] Implement batching skb API and support in IPoIB

From: Krishna Kumar2 <hidden>
Date: 2007-08-22 04:11:52

David Miller [off-list ref] wrote on 08/22/2007 12:21:43 AM:
From: jamal <redacted>
Date: Tue, 21 Aug 2007 08:30:22 -0400
quoted
On Tue, 2007-21-08 at 00:18 -0700, David Miller wrote:
quoted
Using 16K buffer size really isn't going to keep the pipe full enough
for TSO.
Why the comparison with TSO (or GSO for that matter)?
Because TSO does batching already, so it's a very good
"tit for tat" comparison of the new batching scheme
vs. an existing one.
I am planning to do more testing on your suggestion over the
weekend, but I had a comment. Are you saying that TSO and
batching should be mutually exclusive so hardware that doesn't
support TSO (like IB) only would benefit?

But even if they can co-exist, aren't cases like sending
multiple small skbs better handled with batching?

Thanks,

- KK
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