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Re: bad TSO performance in 2.6.9-rc2-BK

from [Nivedita Singhvi] [Permanent Link][Original]
To: "David S. Miller" <davem@xxxxxxxxxxxxx>
Subject: Re: bad TSO performance in 2.6.9-rc2-BK
From: Nivedita Singhvi <niv@xxxxxxxxxx>
Date: Tue, 28 Sep 2004 00:20:50 -0700
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>, jheffner@xxxxxxx, ak@xxxxxxx, andy.grover@xxxxxxxxx, anton@xxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20040927171356.6a59d039.davem@davemloft.net>
References: <20040923161141.4ea9be4c.davem@davemloft.net> <Pine.NEB.4.33.0409271416360.14606-100000@dexter.psc.edu> <20040927160411.22b44f48.davem@davemloft.net> <20040927233639.GA8333@gondor.apana.org.au> <20040927171356.6a59d039.davem@davemloft.net>
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David S. Miller wrote:

Bright minds think alike.  :-)  We have to keep all the other
packet counts in sync as well.

Andi, others, forget my previous hack patch to tcp_clean_rtx_queue()
and give this more complete patch a try.

I'm getting really good results here on my tg3<-->tg3 setup using
this patch.


Dave, were you seeing a significant number of retransmissions
and sacks in your tests?

thanks,
Nivedita

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