Messages in this thread | | | Date | Tue, 27 Jan 2015 11:45:11 +0100 | From | Michal Hocko <> | Subject | Re: [PATCH v2] mm: vmscan: fix the page state calculation in too_many_isolated |
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On Tue 27-01-15 16:03:57, Vinayak Menon wrote: [...] > Sure, I can retest.
Thanks!
> Even without highly overloaded workqueues, there can be a delay of HZ in > updating the counters. This means reclaim path can be blocked for a second > or more, when there aren't really any isolated pages. So we need the fix in > too_many_isolated also right ?
Is this a big deal though? What you are hitting is certainly a corner case. I assume your system is trashing heavily already with so few pages on the file LRU list.
Anyway as mentioned in other email I would rather see vmstat data more reliable than spread hacks to the code where we see immediate issues.
-- Michal Hocko SUSE Labs
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