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Date: Sat, 5 Mar 2005 17:22:21 +0000
From: Alexey Dokuchaev <danfe@FreeBSD.org>
To: Scott Long <scottl@samsco.org>
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cc: David Xu <davidxu@FreeBSD.org>
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Subject: Re: cvs commit: src/sys/sys proc.h umtx.h src/sys/kernkern_thread.c
	kern_umtx.c
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On Sat, Mar 05, 2005 at 08:21:47AM -0700, Scott Long wrote:
> All David's change does is allocate the umtx_q object at thread
> creation, it doesn't allocate it on every contested lock operation
> like was first suggested.  So yes, it likely slows down thread creation
> by a small amount, but there is already a lot of other overhead there.
> Thread allocation is already optimized by UMA, and it might be possible
> to optmize the sub-allocations by putting them under UMA too.

Ah, well.  Thanks for explanation.

./danfe