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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 22 May 2013 12:35:21 +0300
From:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
CC:	Alex Rosenbaum <alexr@...lanox.com>,
	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 21:15, Ben Hutchings wrote:
> On Tue, 2013-05-21 at 15:29 +0300, Eliezer Tamir wrote:
>> Many of the questions you asked are covered in our RFC cover letter, but
>> I will touch them briefly
>>
>> On 21/05/2013 15:06, Alex Rosenbaum wrote:
>>> 1. It seem this patch does not cover epoll/select and such IO muxing APIs?
>>
>> We are thinking about how to implement epoll support as one of the next
>> steps.
>>
>> What benchmarks are you using to test poll/select/epoll?
> [...]
>
> I raised this issue back at Plumbers and I thought Jesse said poll() was
> covered.  It's likely to be a bit of a toy without that.  Also, UDP?

The current patchset covers poll/select for UDP.
Adding poll/select for TCP should be simple, I will try to include it in 
the next version.

Epoll should see a gain from the above in the case where all the polled 
file descriptors are associated to the same device queue.
A fuller implementation, in the epoll itself would be needed to cover 
multiple queues/devices.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/