Messages in this thread | | | Date | Mon, 21 Aug 2006 14:43:45 +0400 | From | Kirill Korotaev <> | Subject | Re: [RFC][PATCH 5/7] UBC: kernel memory accounting (core) |
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>>1. reclaiming user resources is not that good idea as it looks to you. >>such solutions end up with lots of resources spent on reclaim. >>for user memory reclaims mean consumption of expensive disk I/O bandwidth >>which reduces overall system throughput and influences other users. >> > > > May be I'm overlooking something very obvious. Please tell me, what > happens when a user hits a page fault and the page allocator is easily > able to give a page from its pcp list. But container is over its limit > of physical memory. In your patch there is no attempt by container > support to see if some of the user pages are easily reclaimable. What > options a user will have to make sure some room is created. The patch set send doesn't control user memory! This topic is about kernel memory...
>>2. kernel memory is mostly not reclaimable. can you reclaim vma structs or ipc ids? > > > I'm not arguing about that at all. If people want to talk about > reclaiming kernel pages then that should be done independent of this > subject. Then why do you mess user pages accounting into this thread then?
Kirill
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