linux-kernel - Re: [PATCH v3 net-next 0/4] net: low latency Ethernet device polling

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Message-ID: <519DF84B.10401@linux.intel.com>
Date:	Thu, 23 May 2013 14:06:51 +0300
From:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>
To:	Alex Rosenbaum <alexr@...lanox.com>
CC:	Dave Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Don Skidmore <donald.c.skidmore@...el.com>,
	e1000-devel@...ts.sourceforge.net,
	Willem de Bruijn <willemb@...gle.com>,
	Andi Kleen <andi@...stfloor.org>, HPA <hpa@...or.com>,
	Eliezer Tamir <eliezer@...ir.org.il>
Subject: Re: [PATCH v3 net-next 0/4] net: low latency Ethernet device polling

On 21/05/2013 16:15, Alex Rosenbaum wrote:
> On 5/21/2013 3:29 PM, Eliezer Tamir wrote:
>> What benchmarks are you using to test poll/select/epoll?
> for epoll/select latency tests we are using sockperf as performance
> latency tool: https://code.google.com/p/sockperf/
> It is a client-server based tool and it supported ping-pong, throughput,
> and under-load test type.
> For epoll, you will need to define a 'feedfile' ("-f filepathname")
> which has a list of TCP and/or UDP socket and defined your IO mux type
> ("-F epoll").

Thank you!
This is very helpful.

With sockperf i can directly observe how poll/select/epoll are behaving.
I can see some improvement in all of them but clearly more work is 
needed here.

-Eliezer
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