Date: Fri, 9 Oct 2009 10:29:03 -0400 From: John Baldwin <jhb@freebsd.org> To: Alan Cox <alc@cs.rice.edu> Cc: Alan Cox <alc@freebsd.org>, svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r197750 - head/sys/vm Message-ID: <200910091029.04442.jhb@freebsd.org> In-Reply-To: <4ACAF96C.6070204@cs.rice.edu> References: <200910041853.n94IrAf7082338@svn.freebsd.org> <4ACA0F09.2010808@FreeBSD.org> <4ACAF96C.6070204@cs.rice.edu>
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On Tuesday 06 October 2009 4:01:48 am Alan Cox wrote: > John Baldwin wrote: > > > > Do you care what is in the padding in this case or more about just > > having each mutex on a separate cache line? __aligned() is fine if > > you don't mind the padding getting reused for something else. > > > > Yes, I care. I would also like to prevent the placement of the heads of > the active, inactive, and hold queues (vm_page_queues[]) in the same > cache line as the free page queue mutex. Hmm, ok. -- John Baldwin
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