svn commit: r233011 - head/sys/powerpc/aim
nwhitehorn at freebsd.org
Thu Mar 15 22:56:05 UTC 2012
On 03/15/12 17:18, Alan Cox wrote:
> 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
>> Improve algorithm for deciding whether to loop through all process
>> or look them up individually in pmap_remove() and apply the same
>> in the other ranged operation (pmap_protect). This speeds up make
>> installworld by a factor of 2 on powerpc64.
>> MFC after: 1 week
> As an additional, related optimization, you should look into
> implementing pmap_remove_pages().
Thanks! I didn't know about that one. Is there a reason it isn't called
at the end of vm_pageout_map_deactivate_pages(), which seems to
deactivate all pages with pmap_remove()?
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