DragonFly users List (threaded) for 2007-05
DragonFly BSD
DragonFly users List (threaded) for 2007-05
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Re: SMP performance on drgonfly


From: Kris Kennaway <kkenn@xxxxxxxxxxxxxxxxxx>
Date: Sat, 19 May 2007 13:46:36 -0400

On 2007-05-19, Gergo Szakal <bastyaelvtars@gmail.com> wrote:
> On Fri, 18 May 2007 16:46:27 -0700 (PDT)
> Matthew Dillon <dillon@apollo.backplane.com> wrote:
>
>>     A large chunk of the kernel still runs under the big giant
>>     lock, including the light weight processes that libthread_xu
>>     uses, so something like mysql is going to hit a lot of BGL
>>     contention.
>> 
>
> BTW shouldn't he test the libthread_xu capabilities with Preview instead?

If there is a reasonable expectation that Preview will perform
differently then I am happy to test it, but the way I read Matt's
email is that there has been no recent progress on SMP development
that might improve performance here.

Kris




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