Date: Sat, 5 Mar 2005 17:22:21 +0000 From: Alexey Dokuchaev <danfe@FreeBSD.org> To: Scott Long <scottl@samsco.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/sys proc.h umtx.h src/sys/kernkern_thread.c kern_umtx.c Message-ID: <20050305172221.GA93457@FreeBSD.org> In-Reply-To: <4229CE8B.20703@samsco.org> References: <200503050915.j259F30c058488@repoman.freebsd.org> <20050305101211.GA59471@FreeBSD.org> <4229CE8B.20703@samsco.org>
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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
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