Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3
From: Evgeniy Polyakov
Date: Fri Feb 23 2007 - 07:44:27 EST
On Fri, Feb 23, 2007 at 03:22:25PM +0300, Evgeniy Polyakov (johnpol@xxxxxxxxxxx) wrote:
> I meant that we end up with having one thread per IO - they were
> preallocated, but that does not matter. And what about your idea of
> switching userspace threads to cachemiss threads?
> My main concern was only about the situation, when we ends up with truly
> bloking context (like network), and this results in having thousands of
> threads doing the work - even having most of them sleeping, there is a
> problem with memory overhead and context switching, although it is usable
> situation, but when all of them are ready immediately - context switching
> will kill a machine even with O(1) scheduler which made situation damn
> better than before, but it is not a cure for the problem.
Week of no-dictionary writings starts beating me.
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