Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations | KernelTrap

Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations

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From: Ted Ts'o

Subject: Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations

Date: Friday, November 19, 2010 - 8:45 am

On Fri, Nov 19, 2010 at 02:05:32PM +0000, Mel Gorman wrote:
quoted text> > 
> > How about making the default before 2.6.40, as an initial step?
> > 
> 
> It'd be a reasonable way of ensuring it's being tested everywhere
> and not by those that are interested or using distro kernel configs.
> I guess we'd set to "default y" in the same patch that adds the note to
> feature-removal-schedule.txt.

I'd suggest doing it now (or soon, before 2.6.40), just to make sure
there aren't massive complaints about performance regressions, etc.,
and then deprecating it at say 2.6.42, and then waiting 6-9 months
before removing it.  But, I'm a bit more conservative about making
such changes.

(Said the person who has reluctantly agreed to keep the minixdf mount
option after we found users when we tried deprecating it.  :-)

       	     	      	    	    	  - Ted
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Messages in current thread:

[PATCH 0/8] Use memory compaction instead of lumpy reclaim ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 1/8] mm: compaction: Add trace events for memory co ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 2/8] mm: vmscan: Convert lumpy_mode into a bitmask, Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 3/8] mm: vmscan: Reclaim order-0 and use compaction ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 4/8] mm: migration: Allow migration to operate asyn ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 5/8] mm: migration: Cleanup migrate_pages API by ma ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 6/8] mm: compaction: Perform a faster scan in try_t ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 7/8] mm: compaction: Use the LRU to get a hint on w ..., Mel Gorman, (Wed Nov 17, 9:22 am)

[PATCH 8/8] mm: vmscan: Rename lumpy_mode to reclaim_mode, Mel Gorman, (Wed Nov 17, 9:22 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Andrew Morton, (Wed Nov 17, 4:46 pm)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Rik van Riel, (Wed Nov 17, 7:03 pm)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Mel Gorman, (Thu Nov 18, 1:12 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., KAMEZAWA Hiroyuki, (Thu Nov 18, 1:26 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Johannes Weiner, (Thu Nov 18, 1:38 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Mel Gorman, (Thu Nov 18, 1:44 am)

Re: [PATCH 7/8] mm: compaction: Use the LRU to get a hint ..., KAMEZAWA Hiroyuki, (Thu Nov 18, 2:10 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Mel Gorman, (Thu Nov 18, 2:20 am)

Re: [PATCH 7/8] mm: compaction: Use the LRU to get a hint ..., Mel Gorman, (Thu Nov 18, 2:28 am)

Re: [PATCH 3/8] mm: vmscan: Reclaim order-0 and use compac ..., Andrea Arcangeli, (Thu Nov 18, 11:09 am)

Re: [PATCH 4/8] mm: migration: Allow migration to operate ..., Andrea Arcangeli, (Thu Nov 18, 11:21 am)

Re: [PATCH 3/8] mm: vmscan: Reclaim order-0 and use compac ..., Mel Gorman, (Thu Nov 18, 11:30 am)

Re: [PATCH 4/8] mm: migration: Allow migration to operate ..., Mel Gorman, (Thu Nov 18, 11:34 am)

Re: [PATCH 6/8] mm: compaction: Perform a faster scan in t ..., Andrea Arcangeli, (Thu Nov 18, 11:34 am)

Re: [PATCH 7/8] mm: compaction: Use the LRU to get a hint ..., Andrea Arcangeli, (Thu Nov 18, 11:46 am)

Re: [PATCH 6/8] mm: compaction: Perform a faster scan in t ..., Mel Gorman, (Thu Nov 18, 11:50 am)

Re: [PATCH 4/8] mm: migration: Allow migration to operate ..., Andrea Arcangeli, (Thu Nov 18, 12:00 pm)

Re: [PATCH 6/8] mm: compaction: Perform a faster scan in t ..., Andrea Arcangeli, (Thu Nov 18, 12:08 pm)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Andrew Morton, (Thu Nov 18, 12:49 pm)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Mel Gorman, (Fri Nov 19, 3:48 am)

Re: [PATCH 7/8] mm: compaction: Use the LRU to get a hint ..., Mel Gorman, (Fri Nov 19, 4:08 am)

Re: [PATCH 6/8] mm: compaction: Perform a faster scan in t ..., Mel Gorman, (Fri Nov 19, 4:16 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Theodore Tso, (Fri Nov 19, 5:43 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Mel Gorman, (Fri Nov 19, 7:05 am)

Re: [PATCH 0/8] Use memory compaction instead of lumpy rec ..., Ted Ts'o, (Fri Nov 19, 8:45 am)