From: Mel Gorman <mgorman@suse.de>
To: Jiri Slaby <jslaby@suse.cz>
Cc: Linux-Stable <stable@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: [PATCH 19/97] mm: compaction: trace compaction begin and end
Date: Thu, 28 Aug 2014 19:34:27 +0100 [thread overview]
Message-ID: <1409250945-30874-20-git-send-email-mgorman@suse.de> (raw)
In-Reply-To: <1409250945-30874-1-git-send-email-mgorman@suse.de>
commit 0eb927c0ab789d3d7d69f68acb850f69d4e7c36f upstream.
The broad goal of the series is to improve allocation success rates for
huge pages through memory compaction, while trying not to increase the
compaction overhead. The original objective was to reintroduce
capturing of high-order pages freed by the compaction, before they are
split by concurrent activity. However, several bugs and opportunities
for simple improvements were found in the current implementation, mostly
through extra tracepoints (which are however too ugly for now to be
considered for sending).
The patches mostly deal with two mechanisms that reduce compaction
overhead, which is caching the progress of migrate and free scanners,
and marking pageblocks where isolation failed to be skipped during
further scans.
Patch 1 (from mgorman) adds tracepoints that allow calculate time spent in
compaction and potentially debug scanner pfn values.
Patch 2 encapsulates the some functionality for handling deferred compactions
for better maintainability, without a functional change
type is not determined without being actually needed.
Patch 3 fixes a bug where cached scanner pfn's are sometimes reset only after
they have been read to initialize a compaction run.
Patch 4 fixes a bug where scanners meeting is sometimes not properly detected
and can lead to multiple compaction attempts quitting early without
doing any work.
Patch 5 improves the chances of sync compaction to process pageblocks that
async compaction has skipped due to being !MIGRATE_MOVABLE.
Patch 6 improves the chances of sync direct compaction to actually do anything
when called after async compaction fails during allocation slowpath.
The impact of patches were validated using mmtests's stress-highalloc
benchmark with mmtests's stress-highalloc benchmark on a x86_64 machine
with 4GB memory.
Due to instability of the results (mostly related to the bugs fixed by
patches 2 and 3), 10 iterations were performed, taking min,mean,max
values for success rates and mean values for time and vmstat-based
metrics.
First, the default GFP_HIGHUSER_MOVABLE allocations were tested with the
patches stacked on top of v3.13-rc2. Patch 2 is OK to serve as baseline
due to no functional changes in 1 and 2. Comments below.
stress-highalloc
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-nothp 3-nothp 4-nothp 5-nothp 6-nothp
Success 1 Min 9.00 ( 0.00%) 10.00 (-11.11%) 43.00 (-377.78%) 43.00 (-377.78%) 33.00 (-266.67%)
Success 1 Mean 27.50 ( 0.00%) 25.30 ( 8.00%) 45.50 (-65.45%) 45.90 (-66.91%) 46.30 (-68.36%)
Success 1 Max 36.00 ( 0.00%) 36.00 ( 0.00%) 47.00 (-30.56%) 48.00 (-33.33%) 52.00 (-44.44%)
Success 2 Min 10.00 ( 0.00%) 8.00 ( 20.00%) 46.00 (-360.00%) 45.00 (-350.00%) 35.00 (-250.00%)
Success 2 Mean 26.40 ( 0.00%) 23.50 ( 10.98%) 47.30 (-79.17%) 47.60 (-80.30%) 48.10 (-82.20%)
Success 2 Max 34.00 ( 0.00%) 33.00 ( 2.94%) 48.00 (-41.18%) 50.00 (-47.06%) 54.00 (-58.82%)
Success 3 Min 65.00 ( 0.00%) 63.00 ( 3.08%) 85.00 (-30.77%) 84.00 (-29.23%) 85.00 (-30.77%)
Success 3 Mean 76.70 ( 0.00%) 70.50 ( 8.08%) 86.20 (-12.39%) 85.50 (-11.47%) 86.00 (-12.13%)
Success 3 Max 87.00 ( 0.00%) 86.00 ( 1.15%) 88.00 ( -1.15%) 87.00 ( 0.00%) 87.00 ( 0.00%)
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-nothp 3-nothp 4-nothp 5-nothp 6-nothp
User 6437.72 6459.76 5960.32 5974.55 6019.67
System 1049.65 1049.09 1029.32 1031.47 1032.31
Elapsed 1856.77 1874.48 1949.97 1994.22 1983.15
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-nothp 3-nothp 4-nothp 5-nothp 6-nothp
Minor Faults 253952267 254581900 250030122 250507333 250157829
Major Faults 420 407 506 530 530
Swap Ins 4 9 9 6 6
Swap Outs 398 375 345 346 333
Direct pages scanned 197538 189017 298574 287019 299063
Kswapd pages scanned 1809843 1801308 1846674 1873184 1861089
Kswapd pages reclaimed 1806972 1798684 1844219 1870509 1858622
Direct pages reclaimed 197227 188829 298380 286822 298835
Kswapd efficiency 99% 99% 99% 99% 99%
Kswapd velocity 953.382 970.449 952.243 934.569 922.286
Direct efficiency 99% 99% 99% 99% 99%
Direct velocity 104.058 101.832 153.961 143.200 148.205
Percentage direct scans 9% 9% 13% 13% 13%
Zone normal velocity 347.289 359.676 348.063 339.933 332.983
Zone dma32 velocity 710.151 712.605 758.140 737.835 737.507
Zone dma velocity 0.000 0.000 0.000 0.000 0.000
Page writes by reclaim 557.600 429.000 353.600 426.400 381.800
Page writes file 159 53 7 79 48
Page writes anon 398 375 345 346 333
Page reclaim immediate 825 644 411 575 420
Sector Reads 2781750 2769780 2878547 2939128 2910483
Sector Writes 12080843 12083351 12012892 12002132 12010745
Page rescued immediate 0 0 0 0 0
Slabs scanned 1575654 1545344 1778406 1786700 1794073
Direct inode steals 9657 10037 15795 14104 14645
Kswapd inode steals 46857 46335 50543 50716 51796
Kswapd skipped wait 0 0 0 0 0
THP fault alloc 97 91 81 71 77
THP collapse alloc 456 506 546 544 565
THP splits 6 5 5 4 4
THP fault fallback 0 1 0 0 0
THP collapse fail 14 14 12 13 12
Compaction stalls 1006 980 1537 1536 1548
Compaction success 303 284 562 559 578
Compaction failures 702 696 974 976 969
Page migrate success 1177325 1070077 3927538 3781870 3877057
Page migrate failure 0 0 0 0 0
Compaction pages isolated 2547248 2306457 8301218 8008500 8200674
Compaction migrate scanned 42290478 38832618 153961130 154143900 159141197
Compaction free scanned 89199429 79189151 356529027 351943166 356326727
Compaction cost 1566 1426 5312 5156 5294
NUMA PTE updates 0 0 0 0 0
NUMA hint faults 0 0 0 0 0
NUMA hint local faults 0 0 0 0 0
NUMA hint local percent 100 100 100 100 100
NUMA pages migrated 0 0 0 0 0
AutoNUMA cost 0 0 0 0 0
Observations:
- The "Success 3" line is allocation success rate with system idle
(phases 1 and 2 are with background interference). I used to get stable
values around 85% with vanilla 3.11. The lower min and mean values came
with 3.12. This was bisected to commit 81c0a2bb ("mm: page_alloc: fair
zone allocator policy") As explained in comment for patch 3, I don't
think the commit is wrong, but that it makes the effect of compaction
bugs worse. From patch 3 onwards, the results are OK and match the 3.11
results.
- Patch 4 also clearly helps phases 1 and 2, and exceeds any results
I've seen with 3.11 (I didn't measure it that thoroughly then, but it
was never above 40%).
- Compaction cost and number of scanned pages is higher, especially due
to patch 4. However, keep in mind that patches 3 and 4 fix existing
bugs in the current design of compaction overhead mitigation, they do
not change it. If overhead is found unacceptable, then it should be
decreased differently (and consistently, not due to random conditions)
than the current implementation does. In contrast, patches 5 and 6
(which are not strictly bug fixes) do not increase the overhead (but
also not success rates). This might be a limitation of the
stress-highalloc benchmark as it's quite uniform.
Another set of results is when configuring stress-highalloc t allocate
with similar flags as THP uses:
(GFP_HIGHUSER_MOVABLE|__GFP_NOMEMALLOC|__GFP_NORETRY|__GFP_NO_KSWAPD)
stress-highalloc
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-thp 3-thp 4-thp 5-thp 6-thp
Success 1 Min 2.00 ( 0.00%) 7.00 (-250.00%) 18.00 (-800.00%) 19.00 (-850.00%) 26.00 (-1200.00%)
Success 1 Mean 19.20 ( 0.00%) 17.80 ( 7.29%) 29.20 (-52.08%) 29.90 (-55.73%) 32.80 (-70.83%)
Success 1 Max 27.00 ( 0.00%) 29.00 ( -7.41%) 35.00 (-29.63%) 36.00 (-33.33%) 37.00 (-37.04%)
Success 2 Min 3.00 ( 0.00%) 8.00 (-166.67%) 21.00 (-600.00%) 21.00 (-600.00%) 32.00 (-966.67%)
Success 2 Mean 19.30 ( 0.00%) 17.90 ( 7.25%) 32.20 (-66.84%) 32.60 (-68.91%) 35.70 (-84.97%)
Success 2 Max 27.00 ( 0.00%) 30.00 (-11.11%) 36.00 (-33.33%) 37.00 (-37.04%) 39.00 (-44.44%)
Success 3 Min 62.00 ( 0.00%) 62.00 ( 0.00%) 85.00 (-37.10%) 75.00 (-20.97%) 64.00 ( -3.23%)
Success 3 Mean 66.30 ( 0.00%) 65.50 ( 1.21%) 85.60 (-29.11%) 83.40 (-25.79%) 83.50 (-25.94%)
Success 3 Max 70.00 ( 0.00%) 69.00 ( 1.43%) 87.00 (-24.29%) 86.00 (-22.86%) 87.00 (-24.29%)
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-thp 3-thp 4-thp 5-thp 6-thp
User 6547.93 6475.85 6265.54 6289.46 6189.96
System 1053.42 1047.28 1043.23 1042.73 1038.73
Elapsed 1835.43 1821.96 1908.67 1912.74 1956.38
3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2 3.13-rc2
2-thp 3-thp 4-thp 5-thp 6-thp
Minor Faults 256805673 253106328 253222299 249830289 251184418
Major Faults 395 375 423 434 448
Swap Ins 12 10 10 12 9
Swap Outs 530 537 487 455 415
Direct pages scanned 71859 86046 153244 152764 190713
Kswapd pages scanned 1900994 1870240 1898012 1892864 1880520
Kswapd pages reclaimed 1897814 1867428 1894939 1890125 1877924
Direct pages reclaimed 71766 85908 153167 152643 190600
Kswapd efficiency 99% 99% 99% 99% 99%
Kswapd velocity 1029.000 1067.782 1000.091 991.049 951.218
Direct efficiency 99% 99% 99% 99% 99%
Direct velocity 38.897 49.127 80.747 79.983 96.468
Percentage direct scans 3% 4% 7% 7% 9%
Zone normal velocity 351.377 372.494 348.910 341.689 335.310
Zone dma32 velocity 716.520 744.414 731.928 729.343 712.377
Zone dma velocity 0.000 0.000 0.000 0.000 0.000
Page writes by reclaim 669.300 604.000 545.700 538.900 429.900
Page writes file 138 66 58 83 14
Page writes anon 530 537 487 455 415
Page reclaim immediate 806 655 772 548 517
Sector Reads 2711956 2703239 2811602 2818248 2839459
Sector Writes 12163238 12018662 12038248 11954736 11994892
Page rescued immediate 0 0 0 0 0
Slabs scanned 1385088 1388364 1507968 1513292 1558656
Direct inode steals 1739 2564 4622 5496 6007
Kswapd inode steals 47461 46406 47804 48013 48466
Kswapd skipped wait 0 0 0 0 0
THP fault alloc 110 82 84 69 70
THP collapse alloc 445 482 467 462 539
THP splits 6 5 4 5 3
THP fault fallback 3 0 0 0 0
THP collapse fail 15 14 14 14 13
Compaction stalls 659 685 1033 1073 1111
Compaction success 222 225 410 427 456
Compaction failures 436 460 622 646 655
Page migrate success 446594 439978 1085640 1095062 1131716
Page migrate failure 0 0 0 0 0
Compaction pages isolated 1029475 1013490 2453074 2482698 2565400
Compaction migrate scanned 9955461 11344259 24375202 27978356 30494204
Compaction free scanned 27715272 28544654 80150615 82898631 85756132
Compaction cost 552 555 1344 1379 1436
NUMA PTE updates 0 0 0 0 0
NUMA hint faults 0 0 0 0 0
NUMA hint local faults 0 0 0 0 0
NUMA hint local percent 100 100 100 100 100
NUMA pages migrated 0 0 0 0 0
AutoNUMA cost 0 0 0 0 0
There are some differences from the previous results for THP-like allocations:
- Here, the bad result for unpatched kernel in phase 3 is much more
consistent to be between 65-70% and not related to the "regression" in
3.12. Still there is the improvement from patch 4 onwards, which brings
it on par with simple GFP_HIGHUSER_MOVABLE allocations.
- Compaction costs have increased, but nowhere near as much as the
non-THP case. Again, the patches should be worth the gained
determininsm.
- Patches 5 and 6 somewhat increase the number of migrate-scanned pages.
This is most likely due to __GFP_NO_KSWAPD flag, which means the cached
pfn's and pageblock skip bits are not reset by kswapd that often (at
least in phase 3 where no concurrent activity would wake up kswapd) and
the patches thus help the sync-after-async compaction. It doesn't
however show that the sync compaction would help so much with success
rates, which can be again seen as a limitation of the benchmark
scenario.
This patch (of 6):
Add two tracepoints for compaction begin and end of a zone. Using this it
is possible to calculate how much time a workload is spending within
compaction and potentially debug problems related to cached pfns for
scanning. In combination with the direct reclaim and slab trace points it
should be possible to estimate most allocation-related overhead for a
workload.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
include/trace/events/compaction.h | 42 +++++++++++++++++++++++++++++++++++++++
mm/compaction.c | 4 ++++
2 files changed, 46 insertions(+)
diff --git a/include/trace/events/compaction.h b/include/trace/events/compaction.h
index fde1b3e..06f544e 100644
--- a/include/trace/events/compaction.h
+++ b/include/trace/events/compaction.h
@@ -67,6 +67,48 @@ TRACE_EVENT(mm_compaction_migratepages,
__entry->nr_failed)
);
+TRACE_EVENT(mm_compaction_begin,
+ TP_PROTO(unsigned long zone_start, unsigned long migrate_start,
+ unsigned long free_start, unsigned long zone_end),
+
+ TP_ARGS(zone_start, migrate_start, free_start, zone_end),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, zone_start)
+ __field(unsigned long, migrate_start)
+ __field(unsigned long, free_start)
+ __field(unsigned long, zone_end)
+ ),
+
+ TP_fast_assign(
+ __entry->zone_start = zone_start;
+ __entry->migrate_start = migrate_start;
+ __entry->free_start = free_start;
+ __entry->zone_end = zone_end;
+ ),
+
+ TP_printk("zone_start=%lu migrate_start=%lu free_start=%lu zone_end=%lu",
+ __entry->zone_start,
+ __entry->migrate_start,
+ __entry->free_start,
+ __entry->zone_end)
+);
+
+TRACE_EVENT(mm_compaction_end,
+ TP_PROTO(int status),
+
+ TP_ARGS(status),
+
+ TP_STRUCT__entry(
+ __field(int, status)
+ ),
+
+ TP_fast_assign(
+ __entry->status = status;
+ ),
+
+ TP_printk("status=%d", __entry->status)
+);
#endif /* _TRACE_COMPACTION_H */
diff --git a/mm/compaction.c b/mm/compaction.c
index 6441083e..d656656 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -986,6 +986,8 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
zone->compact_cached_migrate_pfn = cc->migrate_pfn;
}
+ trace_mm_compaction_begin(start_pfn, cc->migrate_pfn, cc->free_pfn, end_pfn);
+
migrate_prep_local();
while ((ret = compact_finished(zone, cc)) == COMPACT_CONTINUE) {
@@ -1035,6 +1037,8 @@ out:
cc->nr_freepages -= release_freepages(&cc->freepages);
VM_BUG_ON(cc->nr_freepages != 0);
+ trace_mm_compaction_end(ret);
+
return ret;
}
--
1.8.4.5
next prev parent reply other threads:[~2014-08-28 19:09 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-28 18:34 [PATCH 00/97] Misc series of functional/performance fixes for 3.12-stable Mel Gorman
2014-08-28 18:34 ` [PATCH 01/97] mm: thp: cleanup: mv alloc_hugepage to better place Mel Gorman
2014-08-28 18:34 ` [PATCH 02/97] mm: thp: khugepaged: add policy for finding target node Mel Gorman
2014-08-28 18:34 ` [PATCH 03/97] slab: correct pfmemalloc check Mel Gorman
2014-08-28 18:34 ` [PATCH 04/97] mm: prevent setting of a value less than 0 to min_free_kbytes Mel Gorman
2014-08-28 18:34 ` [PATCH 05/97] mm: fix bad rss-counter if remap_file_pages raced migration Mel Gorman
2014-08-28 18:34 ` [PATCH 06/97] hugetlb: ensure hugepage access is denied if hugepages are not supported Mel Gorman
2014-08-28 18:34 ` [PATCH 07/97] mm: exclude memoryless nodes from zone_reclaim Mel Gorman
2014-08-28 18:34 ` [PATCH 08/97] mm, thp: do not allow thp faults to avoid cpuset restrictions Mel Gorman
2014-09-26 9:53 ` Jiri Slaby
2014-10-13 15:17 ` Mel Gorman
2014-08-28 18:34 ` [PATCH 09/97] swap: change swap_info singly-linked list to list_head Mel Gorman
2014-08-28 18:34 ` [PATCH 10/97] lib/plist: add helper functions Mel Gorman
2014-08-28 18:34 ` [PATCH 11/97] lib/plist: add plist_requeue Mel Gorman
2014-08-28 18:34 ` [PATCH 12/97] swap: change swap_list_head to plist, add swap_avail_head Mel Gorman
2014-08-28 18:34 ` [PATCH 13/97] readahead: fix sequential read cache miss detection Mel Gorman
2014-08-28 18:34 ` [PATCH 14/97] mm: get rid of unnecessary overhead of trace_mm_page_alloc_extfrag() Mel Gorman
2014-08-28 18:34 ` [PATCH 15/97] mm: __rmqueue_fallback() should respect pageblock type Mel Gorman
2014-08-28 18:34 ` [PATCH 16/97] mm, x86: Account for TLB flushes only when debugging Mel Gorman
2014-08-28 18:34 ` [PATCH 17/97] x86/mm: Clean up inconsistencies when flushing TLB ranges Mel Gorman
2014-08-28 18:34 ` [PATCH 18/97] x86/mm: Eliminate redundant page table walk during TLB range flushing Mel Gorman
2014-08-28 18:34 ` Mel Gorman [this message]
2014-08-28 18:34 ` [PATCH 20/97] mm: compaction: encapsulate defer reset logic Mel Gorman
2014-08-28 18:34 ` [PATCH 21/97] mm: compaction: do not mark unmovable pageblocks as skipped in async compaction Mel Gorman
2014-08-28 18:34 ` [PATCH 22/97] mm: compaction: reset scanner positions immediately when they meet Mel Gorman
2014-08-28 18:34 ` [PATCH 23/97] swap: add a simple detector for inappropriate swapin readahead Mel Gorman
2014-08-28 18:34 ` [PATCH 24/97] mm: vmscan: shrink all slab objects if tight on memory Mel Gorman
2014-08-28 18:34 ` [PATCH 25/97] mm: vmscan: call NUMA-unaware shrinkers irrespective of nodemask Mel Gorman
2014-08-28 18:34 ` [PATCH 26/97] mm: get rid of unnecessary pageblock scanning in setup_zone_migrate_reserve Mel Gorman
2014-08-28 18:34 ` [PATCH 27/97] mm, compaction: avoid isolating pinned pages Mel Gorman
2014-08-28 18:34 ` [PATCH 28/97] mm/compaction: disallow high-order page for migration target Mel Gorman
2014-08-28 18:34 ` [PATCH 29/97] mm/compaction: do not call suitable_migration_target() on every page Mel Gorman
2014-08-28 18:34 ` [PATCH 30/97] mm/compaction: change the timing to check to drop the spinlock Mel Gorman
2014-08-28 18:34 ` [PATCH 31/97] mm/compaction: check pageblock suitability once per pageblock Mel Gorman
2014-08-28 18:34 ` [PATCH 32/97] mm/compaction: clean-up code on success of ballon isolation Mel Gorman
2014-08-28 18:34 ` [PATCH 33/97] mm, compaction: determine isolation mode only once Mel Gorman
2014-08-28 18:34 ` [PATCH 34/97] mm, compaction: ignore pageblock skip when manually invoking compaction Mel Gorman
2014-08-28 18:34 ` [PATCH 35/97] mm/readahead.c: fix readahead failure for memoryless NUMA nodes and limit readahead pages Mel Gorman
2014-08-28 18:34 ` [PATCH 36/97] mm: optimize put_mems_allowed() usage Mel Gorman
2014-08-28 18:34 ` [PATCH 37/97] mm/filemap.c: avoid always dirtying mapping->flags on O_DIRECT Mel Gorman
2014-08-28 18:34 ` [PATCH 38/97] mm: vmscan: respect NUMA policy mask when shrinking slab on direct reclaim Mel Gorman
2014-08-28 18:34 ` [PATCH 39/97] mm: vmscan: shrink_slab: rename max_pass -> freeable Mel Gorman
2014-08-28 18:34 ` [PATCH 40/97] vmscan: reclaim_clean_pages_from_list() must use mod_zone_page_state() Mel Gorman
2014-08-28 18:34 ` [PATCH 41/97] mm: per-thread vma caching Mel Gorman
2014-08-28 18:34 ` [PATCH 42/97] mm: don't pointlessly use BUG_ON() for sanity check Mel Gorman
2014-08-28 18:34 ` [PATCH 43/97] lib: radix-tree: add radix_tree_delete_item() Mel Gorman
2014-08-28 18:34 ` [PATCH 44/97] mm: shmem: save one radix tree lookup when truncating swapped pages Mel Gorman
2014-08-28 18:34 ` [PATCH 45/97] mm: filemap: move radix tree hole searching here Mel Gorman
2014-08-28 18:34 ` [PATCH 46/97] mm + fs: prepare for non-page entries in page cache radix trees Mel Gorman
2014-08-28 18:34 ` [PATCH 47/97] mm: madvise: fix MADV_WILLNEED on shmem swapouts Mel Gorman
2014-08-28 18:34 ` [PATCH 48/97] mm: remove read_cache_page_async() Mel Gorman
2014-08-28 18:34 ` [PATCH 49/97] callers of iov_copy_from_user_atomic() don't need pagecache_disable() Mel Gorman
2014-08-28 18:34 ` [PATCH 50/97] mm/readahead.c: inline ra_submit Mel Gorman
2014-08-28 18:34 ` [PATCH 51/97] mm/compaction: clean up unused code lines Mel Gorman
2014-08-28 18:35 ` [PATCH 52/97] mm/compaction: cleanup isolate_freepages() Mel Gorman
2014-08-28 18:35 ` [PATCH 53/97] mm, migration: add destination page freeing callback Mel Gorman
2014-08-28 18:35 ` [PATCH 54/97] mm, compaction: return failed migration target pages back to freelist Mel Gorman
2014-08-28 18:35 ` [PATCH 55/97] mm, compaction: add per-zone migration pfn cache for async compaction Mel Gorman
2014-08-28 18:35 ` [PATCH 56/97] mm, compaction: embed migration mode in compact_control Mel Gorman
2014-08-28 18:35 ` [PATCH 57/97] mm, compaction: terminate async compaction when rescheduling Mel Gorman
2014-08-28 18:35 ` [PATCH 58/97] mm/compaction: do not count migratepages when unnecessary Mel Gorman
2014-08-28 18:35 ` [PATCH 59/97] mm/compaction: avoid rescanning pageblocks in isolate_freepages Mel Gorman
2014-08-28 18:35 ` [PATCH 60/97] mm, compaction: properly signal and act upon lock and need_sched() contention Mel Gorman
2014-08-28 18:35 ` [PATCH 61/97] x86/mm: In the PTE swapout page reclaim case clear the accessed bit instead of flushing the TLB Mel Gorman
2014-08-28 18:35 ` [PATCH 62/97] mm: fix direct reclaim writeback regression Mel Gorman
2014-08-28 18:35 ` [PATCH 63/97] fs/superblock: unregister sb shrinker before ->kill_sb() Mel Gorman
2014-08-28 18:35 ` [PATCH 64/97] fs/superblock: avoid locking counting inodes and dentries before reclaiming them Mel Gorman
2014-08-28 18:35 ` [PATCH 65/97] mm: vmscan: use proportional scanning during direct reclaim and full scan at DEF_PRIORITY Mel Gorman
2014-08-28 18:35 ` [PATCH 66/97] mm/page_alloc: prevent MIGRATE_RESERVE pages from being misplaced Mel Gorman
2014-08-28 18:35 ` [PATCH 67/97] mm/swap.c: clean up *lru_cache_add* functions Mel Gorman
2014-08-28 18:35 ` [PATCH 68/97] mm: page_alloc: do not update zlc unless the zlc is active Mel Gorman
2014-08-28 18:35 ` [PATCH 69/97] mm: page_alloc: do not treat a zone that cannot be used for dirty pages as "full" Mel Gorman
2014-08-28 18:35 ` [PATCH 70/97] include/linux/jump_label.h: expose the reference count Mel Gorman
2014-08-28 18:35 ` [PATCH 71/97] mm: page_alloc: use jump labels to avoid checking number_of_cpusets Mel Gorman
2014-08-28 18:35 ` [PATCH 72/97] mm: page_alloc: calculate classzone_idx once from the zonelist ref Mel Gorman
2014-08-28 18:35 ` [PATCH 73/97] mm: page_alloc: only check the zone id check if pages are buddies Mel Gorman
2014-08-28 18:35 ` [PATCH 74/97] mm: page_alloc: only check the alloc flags and gfp_mask for dirty once Mel Gorman
2014-08-28 18:35 ` [PATCH 75/97] mm: page_alloc: take the ALLOC_NO_WATERMARK check out of the fast path Mel Gorman
2014-08-28 18:35 ` [PATCH 76/97] mm: page_alloc: use unsigned int for order in more places Mel Gorman
2014-08-28 18:35 ` [PATCH 77/97] mm: page_alloc: reduce number of times page_to_pfn is called Mel Gorman
2014-08-28 18:35 ` [PATCH 78/97] mm: page_alloc: convert hot/cold parameter and immediate callers to bool Mel Gorman
2014-08-28 18:35 ` [PATCH 79/97] mm: page_alloc: lookup pageblock migratetype with IRQs enabled during free Mel Gorman
2014-08-28 18:35 ` [PATCH 80/97] mm: shmem: avoid atomic operation during shmem_getpage_gfp Mel Gorman
2014-08-28 18:35 ` [PATCH 81/97] mm: do not use atomic operations when releasing pages Mel Gorman
2014-08-28 18:35 ` [PATCH 82/97] mm: do not use unnecessary atomic operations when adding pages to the LRU Mel Gorman
2014-08-28 18:35 ` [PATCH 83/97] fs: buffer: do not use unnecessary atomic operations when discarding buffers Mel Gorman
2014-08-28 18:35 ` [PATCH 84/97] mm: non-atomically mark page accessed during page cache allocation where possible Mel Gorman
2014-08-28 18:35 ` [PATCH 85/97] mm: avoid unnecessary atomic operations during end_page_writeback() Mel Gorman
2014-08-28 18:35 ` [PATCH 86/97] shmem: fix init_page_accessed use to stop !PageLRU bug Mel Gorman
2014-08-28 18:35 ` [PATCH 87/97] mm/memory.c: use entry = ACCESS_ONCE(*pte) in handle_pte_fault() Mel Gorman
2014-08-28 18:35 ` [PATCH 88/97] mm, thp: only collapse hugepages to nodes with affinity for zone_reclaim_mode Mel Gorman
2014-08-28 18:35 ` [PATCH 89/97] mm: make copy_pte_range static again Mel Gorman
2014-08-28 18:35 ` [PATCH 90/97] vmalloc: use rcu list iterator to reduce vmap_area_lock contention Mel Gorman
2014-08-28 18:35 ` [PATCH 91/97] memcg, vmscan: Fix forced scan of anonymous pages Mel Gorman
2014-08-28 18:35 ` [PATCH 92/97] mm: pagemap: avoid unnecessary overhead when tracepoints are deactivated Mel Gorman
2014-08-28 18:35 ` [PATCH 93/97] mm: rearrange zone fields into read-only, page alloc, statistics and page reclaim lines Mel Gorman
2014-08-28 18:35 ` [PATCH 94/97] mm: move zone->pages_scanned into a vmstat counter Mel Gorman
2014-08-28 18:35 ` [PATCH 95/97] mm: vmscan: only update per-cpu thresholds for online CPU Mel Gorman
2014-08-28 18:35 ` [PATCH 96/97] mm: page_alloc: abort fair zone allocation policy when remotes nodes are encountered Mel Gorman
2014-08-28 18:35 ` [PATCH 97/97] mm: page_alloc: reduce cost of the fair zone allocation policy Mel Gorman
2015-01-28 1:13 ` [PATCH 00/97] Misc series of functional/performance fixes for 3.12-stable Greg KH
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