Messages in this thread |  | | | Date | Tue, 22 Apr 2003 08:53:50 -0700 | | From | "Martin J. Bligh" <> | | Subject | Re: objrmap and vmtruncate |
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>> where the list of address_ranges is sorted by start address. This is >> intended to make use of the real-world case that many things (like shared >> libs) map the same exact address ranges over and over again (ie something >> like 3 ranges, but hundreds or thousands of mappings). > > I'd have to see an empirical demonstration or some previously published > analysis (or previously published empirical demonstration) to believe > this does as it should. > > Not to slight the originator, but it is a technique without an a priori > time (or possibly space either) guarantee, so the trials are warranted. > > I'm overstating the argument because it's hard to make it sound slight; > it's very plausible something like this could resolve the time issue.
I got sidetracked by the slowdown seeing for massive contention on the i_shared_sem for even sorting the list. We need to fix that before this is feasible to do ... (though maybe the list will be sufficiently shorter now it's less of a problem .... hmmm). Maybe I'll just finish off the code. M.
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