Messages in this thread | | | Date | Fri, 23 Feb 2007 13:17:51 +0100 | From | Ingo Molnar <> | Subject | Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3 |
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* Michael K. Edwards <medwards.linux@gmail.com> wrote:
> On 2/22/07, Ingo Molnar <mingo@elte.hu> wrote:
> > maybe it will, maybe it wont. Lets try? There is no true difference > > between having a 'request structure' that represents the current > > state of the HTTP connection plus a statemachine that moves that > > request between various queues, and a 'kernel stack' that goes in > > and out of runnable state and carries its processing state in its > > stack - other than the amount of RAM they take. (the kernel stack is > > 4K at a minimum - so with a million outstanding requests they would > > use up 4 GB of RAM. With 20k outstanding requests it's 80 MB of RAM > > - that's acceptable.) > > This is a fundamental misconception. [...]
> The scheduler, on the other hand, has to blow and reload all of the > hidden state associated with force-loading the PC and wherever your > architecture keeps its TLS (maybe not the whole TLB, but not nothing, > either). [...]
please read up a bit more about how the Linux scheduler works. Maybe even read the code if in doubt? In any case, please direct kernel newbie questions to http://kernelnewbies.org/, not linux-kernel@vger.kernel.org.
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