From: "\"Oleg A. Arkhangelsky\"" <sysoleg@yandex.ru>
To: Amit Salecha <amit.salecha@qlogic.com>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH NEXT 3/5] qlcnic: vlan lro support
Date: Fri, 17 Sep 2010 11:34:46 +0400 [thread overview]
Message-ID: <381611284708887@web110.yandex.ru> (raw)
In-Reply-To: <99737F4847ED0A48AECC9F4A1974A4B80F86F8005A@MNEXMB2.qlogic.org>
17.09.2010, 11:10, "Amit Salecha" <amit.salecha@qlogic.com>:
>> -----Original Message-----
>> From: Eric Dumazet [mailto:eric.dumazet@gmail.com]
>> Sent: Thursday, September 16, 2010 6:57 PM
>> To: Amit Salecha
>> Cc: davem@davemloft.net; netdev@vger.kernel.org; Ameen Rahman; Anirban
>> Chakraborty
>> Subject: Re: [PATCH NEXT 3/5] qlcnic: vlan lro support
>>
>> Le jeudi 16 septembre 2010 à 06:14 -0700, Amit Kumar Salecha a écrit :
>>> LRO + GRO + vlan rx accleration support, performance increases
>>> around 20% and cpu utilization reduces around 70% on vlan interface.
>> Interesting. What is the workload that demonstrates such gains ?
>
> Just to demonstrate decrease in cpu utilization further:
> I have taken numbers with various load. I used iperf application to run tcp traffic on vlan interface.
> There is around 80-90% of reduction in cpu utilization.
I'm wondering, how can this scale further. For example if I have 200K low speed simultaneous
TCP connections (router appliance case with many users). Can GRO give us some gain here?
--
wbr, Oleg.
next prev parent reply other threads:[~2010-09-17 7:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-16 13:14 [PATCH NEXT 0/5]qlcnic: vlan rx accleration support Amit Kumar Salecha
2010-09-16 13:14 ` [PATCH NEXT 1/5] qlcnic: support vlan rx accleration Amit Kumar Salecha
2010-09-16 13:26 ` Eric Dumazet
2010-09-16 13:36 ` Eric Dumazet
2010-09-16 13:14 ` [PATCH NEXT 2/5] qlcnic: vlan gro support Amit Kumar Salecha
2010-09-16 13:14 ` [PATCH NEXT 3/5] qlcnic: vlan lro support Amit Kumar Salecha
2010-09-16 13:27 ` Eric Dumazet
2010-09-16 18:13 ` Amit Salecha
2010-09-17 7:10 ` Amit Salecha
2010-09-17 7:34 ` "Oleg A. Arkhangelsky" [this message]
2010-09-17 8:28 ` Eric Dumazet
2010-09-16 13:14 ` [PATCH NEXT 4/5] qlcnic: remove fw version check Amit Kumar Salecha
2010-09-16 13:14 ` [PATCH NEXT 5/5] qlcnic: update version 5.0.10 Amit Kumar Salecha
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