From: Stephen Hemminger <stephen-OTpzqLSitTUnbdJkjeBofR2eb7JE58TQ@public.gmane.org>
To: Sambath Kumar Balasubramanian
<sambath.balasubramanian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: "dev-VfR2kkLFssw@public.gmane.org" <dev-VfR2kkLFssw@public.gmane.org>
Subject: Re: Question on the Ring Library
Date: Wed, 4 Dec 2013 13:25:48 -0800 [thread overview]
Message-ID: <20131204132548.05a151fe@nehalam.linuxnetplumber.net> (raw)
In-Reply-To: <CAPrcauPLZrC5ve4ZX47de5JzT8fSDi6Za3Oe2wKKLpKNTuc6_g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Wed, 4 Dec 2013 03:46:36 -0800
Sambath Kumar Balasubramanian <sambath.balasubramanian-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hi,
>
> The ring library seems to be an excellent IPC. But looking at one use
> case where the fast path code posts events to event thread for example, the
> event thread will spend some cycles polling the ring rather than waiting
> for the event. One approach could be a fast path code basically posts the
> event in the ring as is today and there is a background thread that polls
> the queues and wakes up the event threads. This is similar to Linux
> SOFTIRQs.The event threads are asynchronous. Is this a fair model to avoid
> extra polling CPU cycles by the event threads? Is there any other
> alternatives in dpdk?
>
> Regards,
> Sambath
I have in several cases combined RTE ring with use of eventfd + poll to
get wakeup
next prev parent reply other threads:[~2013-12-04 21:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-04 11:46 Question on the Ring Library Sambath Kumar Balasubramanian
[not found] ` <CAPrcauPLZrC5ve4ZX47de5JzT8fSDi6Za3Oe2wKKLpKNTuc6_g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-12-04 13:47 ` François-Frédéric Ozog
2013-12-04 14:00 ` Sambath Kumar Balasubramanian
[not found] ` <CAPrcauMiBS=T8p9bd1w9_DsGoke7VY2xk=fhDXvPf_YEMrzVHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-12-04 20:02 ` François-Frédéric Ozog
2013-12-04 21:49 ` Sambath Kumar Balasubramanian
2013-12-04 21:25 ` Stephen Hemminger [this message]
[not found] ` <20131204132548.05a151fe-We1ePj4FEcvRI77zikRAJc56i+j3xesD0e7PPNI6Mm0@public.gmane.org>
2013-12-04 21:47 ` Sambath Kumar Balasubramanian
[not found] ` <CAPrcauOxmV0nYj1oznHz2s46br=pY=9GjmemKOT5_XQK1RhcUw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-12-04 21:51 ` Stephen Hemminger
[not found] ` <20131204135125.0fb7bf3f-We1ePj4FEcvRI77zikRAJc56i+j3xesD0e7PPNI6Mm0@public.gmane.org>
2013-12-04 21:58 ` Sambath Kumar Balasubramanian
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