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From: Rajagopal Ananthanarayanan <ananth@sgi.com>
To: mingo@elte.hu
Cc: Benjamin LaHaise <bcrl@redhat.com>,
	Linux Kernel List <linux-kernel@vger.kernel.org>,
	linux-aio@kvack.org, kiobuf-io-devel@lists.sourceforge.net,
	"Stephen C. Tweedie" <sct@redhat.com>
Subject: Re: [Kiobuf-io-devel] Re: 1st glance at kiobuf overhead in kernelaiovs   pread vs user aio
Date: Fri, 02 Feb 2001 16:37:44 -0800	[thread overview]
Message-ID: <3A7B52D8.733CFECC@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.30.0102030023530.8627-100000@elte.hu>

Ingo Molnar wrote:
> 
> On Fri, 2 Feb 2001, Rajagopal Ananthanarayanan wrote:
> 
> > Do you really have worker threads? In my reading of the patch it seems
> > that the wtd is serviced by keventd. [...]
> 
> i think worker threads (or any 'helper' threads) should be avoided. It can
> be done without any extra process context, and it should be done that way.
> Why all the trouble with async IO requests if requests are going to end up
> in a worker thread's context anyway? (which will be a serializing point,
> otherwise why does it end up there?)
> 

Good point. Can you expand on how you plan to service pending
chunks of work (eg. issuing readpage() on some pages) without
the use of threads?

thanks,


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Rajagopal Ananthanarayanan ("ananth")
Member Technical Staff, SGI.
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      reply	other threads:[~2001-02-03  0:40 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-02-02 19:32 1st glance at kiobuf overhead in kernel aio vs pread vs user aio bcrl
2001-02-02 20:18 ` Ingo Molnar
2001-02-02 20:45   ` [Kiobuf-io-devel] " Benjamin LaHaise
2001-02-02 23:14     ` Ingo Molnar
2001-02-02 23:19     ` [Kiobuf-io-devel] Re: 1st glance at kiobuf overhead in kernelaio " Rajagopal Ananthanarayanan
2001-02-02 23:30       ` Ingo Molnar
2001-02-03  0:37         ` Rajagopal Ananthanarayanan [this message]

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