Vm Pageout Scalability Improvements (V8) - continued
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- v1 Latest13 of 25 patches 8 repliesIn review
13 of 25 patches are in this archive. The cover letter announces 25.
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 13/25 | Noreclaim LRU Infrastructureinclude/ include/ include/ +11 more | +382 | 0 replies | |
| 14/25 | Noreclaim LRU Page Statisticsdrivers/ fs/ mm/ +2 more | +36 | 0 replies | |
| 15/25 | Ramfs and Ram Disk pages are non-reclaimabledrivers/ fs/ include/ +1 more | +41 | 0 replies | |
| 16/25 | SHM_LOCKED pages are non-reclaimableinclude/ include/ include/ +3 more | +136 | 0 replies | |
| 17/25 | Mlocked Pages are non-reclaimableinclude/ include/ include/ +10 more | +767 | 0 replies | |
| 18/25 | Downgrade mmap sem while populating mlocked regionsmm/ | +41 | 0 replies | |
| 19/25 | Handle mlocked pages during map, remap, unmapmm/ mm/ mm/ +3 more | +106 | 0 replies | |
| 20/25 | Mlocked Pages statisticsdrivers/ fs/ include/ +3 more | +58 | 0 replies | |
| 21/25 | Cull non-reclaimable pages in fault pathinclude/ mm/ mm/ | +35 | 0 replies | |
| 22/25 | Noreclaim and Mlocked pages vm eventsinclude/ mm/ mm/ +2 more | +66 | 0 replies | |
| 23/25 | Noreclaim LRU scan sysctldrivers/ include/ include/ +3 more | +196 | 0 replies | |
| 24/25 | Mlocked Pages: count attempts to free mlocked pageinclude/ mm/ mm/ +1 more | +20 | 0 replies | |
| 25/25 | Noreclaim LRU and Mlocked Pages DocumentationDocumentation/ | +609 | 0 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.
Cover letter [PATCH 00/25] Vm Pageout Scalability Improvements (V8) - continued
The patches to follow are a continuation of the V8 "VM pageout scalability improvements" series that Rik van Riel posted to LKML on 23May08. These patches apply atop Rik's series with the following overlap:
Patches 13 through 16 replace the corresponding patches in Rik's posting.
Patch 13, the noreclaim lru infrastructure, now includes Kosaki Motohiro's memcontrol enhancements to track nonreclaimable pages.
Patches 14 and 15 are largely unchanged, except for refresh. Includes some minor statistics formatting cleanup.
Patch 16 includes a fix for an potential [unobserved] race condition during SHM_UNLOCK.
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Additional patches in this series:
Patches 17 through 20 keep mlocked pages off the normal [in]active LRU
lists using the noreclaim lru infrastructure. These patches represent
a fairly significant rework of an RFC patch originally posted by Nick Piggin.
Patches 21 and 22 are optional, but recommended, enhancements to the overall noreclaim series.
Patches 23 and 24 are optional enhancements useful during debug and testing.
Patch 25 is a rather verbose document describing the noreclaim lru infrastructure and the use thereof to keep ramfs, SHM_LOCKED and mlocked pages off the normal LRU lists.
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The entire stack, including Rik's split lru patches, are holding up very well under stress loads. E.g., ran for over 90+ hours over the weekend on both x86_64 [32GB, 8core] and ia64 [32GB, 16cpu] platforms without error over last weekend.
I think these are ready for a spin in -mm atop Rik's patches.
Lee