Messages in this thread | | | Date | Thu, 03 Nov 2005 15:01:38 -0800 | From | "Martin J. Bligh" <> | Subject | Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 |
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>> But pages_min is based on the zone size, not the system size. And we >> still cap it. Maybe that's just a mistake? > > The per-zone watermarking is actually the "modern" and "working" approach. > > We didn't always do it that way. I would not be at all surprised if the > capping was from the global watermarking days. > > Of course, I would _also_ not be at all surprised if it wasn't just out of > habit. Most of the things where we try to scale things up by memory size, > we cap for various reasons. Ie we tend to try to scale things like hash > sizes for core data structures by memory size, but then we tend to cap > them to "sane" versions. > > So quite frankly, it's entirely possible that the capping is there not > because it _ever_ was a good idea, but just because it's what we almost > always do ;) > > Mental inertia is definitely alive and well.
Ha ;-) Well thanks for the explanation. I would suggest the patch I sent you makes some semblence of sense then ...
M.
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