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From: Alex Rosenbaum <alexr@mellanox.com>
To: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Cc: Willem de Bruijn <willemb@google.com>,
	Don, e1000-devel@lists.sourceforge.net, netdev@vger.kernel.org,
	HPA <hpa@zytor.com>,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	linux-kernel@vger.kernel.org, Andi Kleen <andi@firstfloor.org>,
	Eliezer Tamir <eliezer@tamir.org.il>,
	Dave Miller <davem@davemloft.net>
Subject: Re: [PATCH v3 net-next 0/4] net: low latency Ethernet device polling
Date: Thu, 23 May 2013 14:45:43 +0300	[thread overview]
Message-ID: <519E0167.6060408@mellanox.com> (raw)
In-Reply-To: <519DF84B.10401@linux.intel.com>


[-- Attachment #1.1: Type: text/plain, Size: 1117 bytes --]

On 5/23/2013 2:06 PM, Eliezer Tamir wrote:
> 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

I'm happy you got it working.

If you add '--timeout=0' to the sockperf epoll command line you can see 
non-blocking epoll application behavior and then you will get some 
improved latency over due to the application thread not sleeping.

This is not like a full blown LLS epoll solution but half way there.


Alex


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  reply	other threads:[~2013-05-23 11:45 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-20 10:15 [PATCH v3 net-next 0/4] net: low latency Ethernet device polling Eliezer Tamir
2013-05-20 10:15 ` Eliezer Tamir
2013-05-20 10:16 ` [PATCH v3 net-next 1/4] net: implement support for low latency socket polling Eliezer Tamir
2013-05-20 10:16   ` Eliezer Tamir
2013-05-20 15:29   ` Eric Dumazet
2013-05-20 19:40     ` David Miller
2013-05-21  7:28     ` Eliezer Tamir
2013-05-21 13:28       ` Eric Dumazet
2013-05-21 17:02         ` Pekka Riikonen
2013-05-21 17:48           ` Eric Dumazet
2013-05-21 17:51             ` Eric Dumazet
2013-05-21 17:51               ` Eric Dumazet
2013-05-21 19:25               ` Eliezer Tamir
2013-05-21 19:25                 ` Eliezer Tamir
2013-05-21 19:29                 ` Eric Dumazet
2013-05-21 19:29                   ` Eric Dumazet
2013-05-21 18:49           ` David Miller
2013-05-21 19:31             ` Pekka Riikonen
2013-05-21 19:31               ` Pekka Riikonen
2013-05-20 10:16 ` [PATCH v3 net-next 2/4] tcp: add TCP support for low latency receive poll Eliezer Tamir
2013-05-20 10:16   ` Eliezer Tamir
2013-05-20 13:49   ` Eric Dumazet
2013-05-20 14:59     ` Eliezer Tamir
2013-05-20 14:59       ` Eliezer Tamir
2013-05-20 10:16 ` [PATCH v3 net-next 3/4] ixgbe: Add support for ndo_ll_poll Eliezer Tamir
2013-05-20 10:16   ` Eliezer Tamir
2013-05-20 20:20   ` Or Gerlitz
2013-05-20 20:20     ` Or Gerlitz
2013-05-20 20:33     ` Andi Kleen
2013-05-20 20:42       ` Or Gerlitz
2013-05-20 21:01         ` Andi Kleen
2013-05-21  6:23           ` Or Gerlitz
2013-05-21  6:23             ` Or Gerlitz
2013-05-21  6:54     ` Eliezer Tamir
2013-05-21  6:54       ` Eliezer Tamir
2013-05-21  7:06       ` Eilon Greenstein
2013-05-21  7:06         ` Eilon Greenstein
2013-05-21  7:14         ` David Miller
2013-05-21  8:24           ` Or Gerlitz
2013-05-21  8:24             ` Or Gerlitz
2013-05-21  8:31             ` Eliezer Tamir
2013-05-21  8:31               ` Eliezer Tamir
2013-05-21  8:39             ` David Miller
2013-05-21  8:42               ` Eliezer Tamir
2013-05-21  8:42                 ` Eliezer Tamir
2013-05-21  8:43               ` Or Gerlitz
2013-05-21  8:43                 ` Or Gerlitz
2013-05-21 10:27                 ` Eliezer Tamir
2013-05-21 10:41                   ` Or Gerlitz
2013-05-21  8:21         ` Or Gerlitz
2013-05-21  8:21           ` Or Gerlitz
2013-05-21  8:28           ` Eilon Greenstein
2013-05-21  8:28             ` Eilon Greenstein
2013-05-21 14:19       ` Willem de Bruijn
2013-05-21 14:19         ` Willem de Bruijn
2013-05-20 10:16 ` [PATCH v3 net-next 4/4] ixgbe: add extra stats " Eliezer Tamir
2013-05-20 10:16   ` Eliezer Tamir
2013-05-21 12:06 ` [PATCH v3 net-next 0/4] net: low latency Ethernet device polling Alex Rosenbaum
2013-05-21 12:29   ` Eliezer Tamir
2013-05-21 13:15     ` Alex Rosenbaum
2013-05-21 13:15       ` Alex Rosenbaum
2013-05-21 13:31       ` Eric Dumazet
2013-05-23 11:06       ` Eliezer Tamir
2013-05-23 11:45         ` Alex Rosenbaum [this message]
2013-05-21 14:30     ` Willem de Bruijn
2013-05-21 14:30       ` Willem de Bruijn
2013-05-21 18:15     ` Ben Hutchings
2013-05-21 18:15       ` Ben Hutchings
2013-05-22  9:35       ` Eliezer Tamir

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