Johannes Weiner e0f79b8f1f vmscan: don't accumulate scan pressure on unrelated lists ... During each reclaim scan we accumulate scan pressure on unrelated lists which will result in bogus scans and unwanted reclaims eventually. Scanning lists with few reclaim candidates results in a lot of rotation and therefor also disturbs the list balancing, putting even more pressure on the wrong lists. In a test-case with much streaming IO, and therefor a crowded inactive file page list, swapping started because a) anon pages were reclaimed after swap_cluster_max reclaim invocations -- nr_scan of this list has just accumulated b) active file pages were scanned because *their* nr_scan has also accumulated through the same logic. And this in return created a lot of rotation for file pages and resulted in a decrease of file list priority, again increasing the pressure on anon pages. The result was an evicted working set of anon pages while there were tons of inactive file pages that should have been taken instead. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-10-20 08:52:31 -07:00
..
allocpercpu.c	mm/allocpercpu.c: make 4 functions static	2008-07-26 12:00:12 -07:00
backing-dev.c	mm: bdi: fix race in bdi_class device creation	2008-05-20 13:31:53 -07:00
bootmem.c	misc: replace __FUNCTION__ with __func__	2008-10-16 11:21:30 -07:00
bounce.c	highmem: use bio_has_data() in the bounce path	2008-10-09 08:56:01 +02:00
dmapool.c	dmapool: enable debugging for CONFIG_SLUB_DEBUG_ON too	2008-04-28 08:58:20 -07:00
fadvise.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
filemap_xip.c	mm: xip/ext2 fix block allocation race	2008-08-20 15:40:32 -07:00
filemap.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
fremap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
highmem.c	x86, pat: avoid highmem cache attribute aliasing	2008-08-15 17:22:57 +02:00
hugetlb.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
internal.h	mlock: count attempts to free mlocked page	2008-10-20 08:52:31 -07:00
Kconfig	Unevictable LRU Infrastructure	2008-10-20 08:50:26 -07:00
maccess.c	kgdb: fix optional arch functions and probe_kernel_*	2008-04-17 20:05:39 +02:00
madvise.c	madvise: update function comment of madvise_dontneed	2008-07-30 09:41:45 -07:00
Makefile	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
memcontrol.c	Unevictable LRU Page Statistics	2008-10-20 08:50:26 -07:00
memory_hotplug.c	vmscan: move isolate_lru_page() to vmscan.c	2008-10-20 08:50:25 -07:00
memory.c	swap: cull unevictable pages in fault path	2008-10-20 08:52:31 -07:00
mempolicy.c	Unevictable LRU Infrastructure	2008-10-20 08:50:26 -07:00
mempool.c
migrate.c	mlock: mlocked pages are unevictable	2008-10-20 08:52:30 -07:00
mincore.c	mm: remove nopage	2008-04-28 08:58:18 -07:00
mlock.c	vmstat: mlocked pages statistics	2008-10-20 08:52:31 -07:00
mm_init.c	mm: mminit_loglevel cannot be __meminitdata anymore	2008-08-20 15:40:30 -07:00
mmap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
mmu_notifier.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mmzone.c	mm: mark the correct zone as full when scanning zonelists	2008-09-13 14:41:52 -07:00
mprotect.c	mmu-notifiers: core	2008-07-28 16:30:21 -07:00
mremap.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
msync.c
nommu.c	mlock: mlocked pages are unevictable	2008-10-20 08:52:30 -07:00
oom_kill.c	security: Fix setting of PF_SUPERPRIV by __capable()	2008-08-14 22:59:43 +10:00
page_alloc.c	mlock: count attempts to free mlocked page	2008-10-20 08:52:31 -07:00
page_io.c	mm: fix PageUptodate data race	2008-02-05 09:44:19 -08:00
page_isolation.c	memory hotplug: missing zone->lock in test_pages_isolated()	2008-10-02 15:53:13 -07:00
page-writeback.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
pagewalk.c	pagemap: pass mm into pagewalkers	2008-06-12 18:05:41 -07:00
pdflush.c	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
prio_tree.c
quicklist.c	mm: size of quicklists shouldn't be proportional to the number of CPUs	2008-09-02 19:21:38 -07:00
readahead.c	vmscan: split LRU lists into anon & file sets	2008-10-20 08:50:25 -07:00
rmap.c	vmscan: unevictable LRU scan sysctl	2008-10-20 08:52:31 -07:00
shmem_acl.c	[PATCH] sanitize ->permission() prototype	2008-07-26 20:53:14 -04:00
shmem.c	SHM_LOCKED pages are unevictable	2008-10-20 08:50:26 -07:00
slab.c	mm: unexport ksize	2008-07-29 23:44:26 +03:00
slob.c	SLOB: fix bogus ksize calculation fix	2008-10-09 12:18:27 -07:00
slub.c	slub: fixed uninitialized counter in struct kmem_cache_node	2008-09-15 09:49:05 +03:00
sparse-vmemmap.c	Christoph has moved	2008-07-04 10:40:04 -07:00
sparse.c	mm/sparse.c: removed duplicated include	2008-08-12 16:07:30 -07:00
swap_state.c	vmscan: add newly swapped in pages to the inactive list	2008-10-20 08:50:25 -07:00
swap.c	swap: cull unevictable pages in fault path	2008-10-20 08:52:31 -07:00
swapfile.c	vmscan: free swap space on swap-in/activation	2008-10-20 08:50:25 -07:00
thrash.c
tiny-shmem.c	mm: tiny-shmem nommu fix	2008-10-02 15:53:13 -07:00
truncate.c	mmap: handle mlocked pages during map, remap, unmap	2008-10-20 08:52:31 -07:00
util.c	mm: Make generic weak get_user_pages_fast and EXPORT_GPL it	2008-08-12 17:52:53 +10:00
vmalloc.c	Merge branches 'x86/xen', 'x86/build', 'x86/microcode', 'x86/mm-debug-v2', 'x86/memory-corruption-check', 'x86/early-printk', 'x86/xsave', 'x86/ptrace-v2', 'x86/quirks', 'x86/setup', 'x86/spinlocks' and 'x86/signal' into x86/core-v2	2008-10-12 15:50:02 +02:00
vmscan.c	vmscan: don't accumulate scan pressure on unrelated lists	2008-10-20 08:52:31 -07:00
vmstat.c	mlock: count attempts to free mlocked page	2008-10-20 08:52:31 -07:00