linux-kernel - Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

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Date:	Tue, 27 Feb 2007 17:15:35 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

Evgeniy Polyakov wrote:
> Ingo Molnar (mingo@...e.hu) wrote:
> > based servers. The measurements so far have shown that the absolute
> > worst-case threading server performance is at around 60% of that of
> > non-context-switching servers - and even that level is reached
> > gradually, leaving time for action for the server owner. While with
> > fully event based servers there are mostly only two modes of
> > performance: 100% performance and near-0% performance: total breakdown.
>
> Let's live in piece! :)
> I always agreed that they should be used together - event-based rings
> of IO requests, if request happens to block (which should be avaided
> as much as possible), then it continues on behalf of sleeping thread.

Agreed 100%.  Notify always when you can, thread only when you must.


Thanks!

--
Al

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