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Re: [e1000 2.6 10/11] TxDescriptors -> 1024 default

Subject: Re: [e1000 2.6 10/11] TxDescriptors -> 1024 default
From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
Date: Thu, 11 Sep 2003 16:22:35 -0700
Cc: jgarzik@xxxxxxxxx, scott.feldman@xxxxxxxxx, netdev@xxxxxxxxxxx, ricardoz@xxxxxxxxxx
In-reply-to: <20030911160252.6cd6c07d.davem@xxxxxxxxxx>
Organization: Candela Technologies
References: <Pine.LNX.4.44.0309081953510.1261-100000@xxxxxxxxxxxxxxxxxxxxx> <3F60CA6D.9090503@xxxxxxxxx> <3F60D0F3.8080006@xxxxxxxxxxxxxxx> <20030911131219.0ab8dfdd.davem@xxxxxxxxxx> <3F60DDCC.5020906@xxxxxxxxxxxxxxx> <20030911140746.4f0384a1.davem@xxxxxxxxxx> <3F60E947.4090005@xxxxxxxxxxxxxxx> <20030911142906.74d9dfe5.davem@xxxxxxxxxx> <3F60F3F7.6090203@xxxxxxxxxxxxxxx> <20030911160252.6cd6c07d.davem@xxxxxxxxxx>
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David S. Miller wrote:
On Thu, 11 Sep 2003 15:15:19 -0700
Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote:


And the original poster shows how a similar problem slows down TCP
as well due to local dropped packets.


So, again, dampen the per-socket send queue sizes.

That's just a band-aid to cover up the flaw with the lack
of queue-pressure feedback to the higher stacks, as would be increasing the
TxDescriptors for that matter.

--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc  http://www.candelatech.com



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