Date: Thu, 15 Mar 2012 17:18:32 -0500 From: Alan Cox <alc@rice.edu> To: Nathan Whitehorn <nwhitehorn@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r233011 - head/sys/powerpc/aim Message-ID: <4F626AB8.3090509@rice.edu> In-Reply-To: <201203151936.q2FJaqTr080483@svn.freebsd.org> References: <201203151936.q2FJaqTr080483@svn.freebsd.org>
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On 3/15/2012 2:36 PM, Nathan Whitehorn wrote: > Author: nwhitehorn > Date: Thu Mar 15 19:36:52 2012 > New Revision: 233011 > URL: http://svn.freebsd.org/changeset/base/233011 > > Log: > Improve algorithm for deciding whether to loop through all process pages > or look them up individually in pmap_remove() and apply the same logic > in the other ranged operation (pmap_protect). This speeds up make > installworld by a factor of 2 on powerpc64. > > MFC after: 1 week > > Modified: > head/sys/powerpc/aim/mmu_oea64.c > As an additional, related optimization, you should look into implementing pmap_remove_pages(). Alan
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