Messages in this thread | | | Subject | Re: [ckrm-tech] [PATCH 4/7] UBC: syscalls (user interface) | From | Magnus Damm <> | Date | Mon, 21 Aug 2006 11:47:06 +0900 |
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On Fri, 2006-08-18 at 07:45 -0700, Dave Hansen wrote: > On Fri, 2006-08-18 at 12:08 +0400, Andrey Savochkin wrote: > > > > A) Have separate memory management for each container, > > with separate buddy allocator, lru lists, page replacement mechanism. > > That implies a considerable overhead, and the main challenge there > > is sharing of pages between these separate memory managers. > > Hold on here for just a sec... > > It is quite possible to do memory management aimed at one container > while that container's memory still participates in the main VM. > > There is overhead here, as the LRU scanning mechanisms get less > efficient, but I'd rather pay a penalty at LRU scanning time than divide > up the VM, or coarsely start failing allocations.
This could of course be solved with one LRU per container, which is how the CKRM memory controller implemented things about a year ago.
/ magnus
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