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Message-ID: <4C715027.9060602@superonline.com>
Date: Sun, 22 Aug 2010 19:28:23 +0300
From: "M. Vefa Bicakci" <bicave@...eronline.com>
To: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
CC: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [Bisected Regression in 2.6.35] A full tmpfs filesystem causeshibernation to hang
Hello,
> I've tested hibernation case for a while. but I have no luck. I couldn't
> reproduce your issue. Very sorry. Can you please help our debugging?
> If possible, I hope to run following three test.
First of all, thanks a lot for spending time on this regression
I have been experiencing. I really appreciate it.
Sorry to hear that you weren't able to reproduce the issue. Well the
good (or bad?) news is that I am able to reproduce it with 2.6.35.3
with your patches applied.
I should note that after applying your patches and trying a hibernation
with a full tmpfs, a printk prints extra information on the screen just
before the hibernation process hangs. The last time I ran it, it printed:
=== 8< ===
shrink_all_memory: req: 342067 reclaimed: 27062 free: 340221
=== >8 ===
A piece of information that may be relevant or irrelevant is that my
swap space is on a dm-crypt volume.
Appended are the results of the tests you asked me to carry out.
If you'd like, I can send in private a tarball containing this
information in separate files.
Once again, thanks a lot for helping out.
M. Vefa Bicakci
>
> 1. Please let me know your machine & test script
Please note that I filled up the tmpfs filesystem between step 1
and step 2.
>
> % cat /proc/meminfo
MemTotal: 3104484 kB
MemFree: 2817616 kB
Buffers: 31156 kB
Cached: 142124 kB
SwapCached: 0 kB
Active: 116464 kB
Inactive: 137424 kB
Active(anon): 80852 kB
Inactive(anon): 24820 kB
Active(file): 35612 kB
Inactive(file): 112604 kB
Unevictable: 32 kB
Mlocked: 32 kB
HighTotal: 2226632 kB
HighFree: 1994008 kB
LowTotal: 877852 kB
LowFree: 823608 kB
SwapTotal: 1999540 kB
SwapFree: 1999540 kB
Dirty: 116 kB
Writeback: 0 kB
AnonPages: 80636 kB
Mapped: 43768 kB
Shmem: 25068 kB
Slab: 15120 kB
SReclaimable: 7516 kB
SUnreclaim: 7604 kB
KernelStack: 1856 kB
PageTables: 2420 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3551780 kB
Committed_AS: 337784 kB
VmallocTotal: 122880 kB
VmallocUsed: 16308 kB
VmallocChunk: 94312 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 20472 kB
DirectMap4M: 888832 kB
> % cat /proc/vmstat
nr_free_pages 704435
nr_inactive_anon 6199
nr_active_anon 20213
nr_inactive_file 28153
nr_active_file 8904
nr_unevictable 8
nr_mlock 8
nr_anon_pages 20159
nr_mapped 10943
nr_file_pages 43317
nr_dirty 2
nr_writeback 0
nr_slab_reclaimable 1879
nr_slab_unreclaimable 1900
nr_page_table_pages 605
nr_kernel_stack 232
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 6261
pgpgin 150947
pgpgout 3984
pswpin 0
pswpout 0
pgalloc_dma 2
pgalloc_normal 55622
pgalloc_high 219709
pgalloc_movable 0
pgfree 980252
pgactivate 12703
pgdeactivate 0
pgfault 584903
pgmajfault 1077
pgrefill_dma 0
pgrefill_normal 0
pgrefill_high 0
pgrefill_movable 0
pgsteal_dma 0
pgsteal_normal 0
pgsteal_high 0
pgsteal_movable 0
pgscan_kswapd_dma 0
pgscan_kswapd_normal 0
pgscan_kswapd_high 0
pgscan_kswapd_movable 0
pgscan_direct_dma 0
pgscan_direct_normal 0
pgscan_direct_high 0
pgscan_direct_movable 0
pginodesteal 0
slabs_scanned 0
kswapd_steal 0
kswapd_inodesteal 0
kswapd_low_wmark_hit_quickly 0
kswapd_high_wmark_hit_quickly 0
kswapd_skip_congestion_wait 0
pageoutrun 0
allocstall 0
pgrotated 0
htlb_buddy_alloc_success 0
htlb_buddy_alloc_fail 0
unevictable_pgs_culled 7828
unevictable_pgs_scanned 0
unevictable_pgs_rescued 7042
unevictable_pgs_mlocked 8558
unevictable_pgs_munlocked 8550
unevictable_pgs_cleared 0
unevictable_pgs_stranded 0
unevictable_pgs_mlockfreed 0
> % cat /proc/zoneinfo
Node 0, zone DMA
pages free 2614
min 16
low 20
high 24
scanned 0
spanned 4080
present 3951
nr_free_pages 2614
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 0
nr_active_file 0
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 0
nr_file_pages 0
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 2
nr_page_table_pages 0
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 865, 3022, 3022)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 4
cpu: 1
count: 0
high: 0
batch: 1
vm stats threshold: 4
all_unreclaimable: 0
prev_priority: 12
start_pfn: 16
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 0
recent_file_scanned: 0
anon_ratio: 30
Node 0, zone Normal
pages free 203226
min 932
low 1165
high 1398
scanned 0
spanned 223230
present 221486
nr_free_pages 203226
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 5727
nr_active_file 2143
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 1
nr_file_pages 7869
nr_dirty 9
nr_writeback 0
nr_slab_reclaimable 1880
nr_slab_unreclaimable 1898
nr_page_table_pages 0
nr_kernel_stack 232
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 0, 17259, 17259)
pagesets
cpu: 0
count: 127
high: 186
batch: 31
vm stats threshold: 16
cpu: 1
count: 61
high: 186
batch: 31
vm stats threshold: 16
all_unreclaimable: 0
prev_priority: 12
start_pfn: 4096
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 2330
recent_file_scanned: 11064
anon_ratio: 8
Node 0, zone HighMem
pages free 498378
min 128
low 709
high 1290
scanned 0
spanned 556658
present 552309
nr_free_pages 498378
nr_inactive_anon 6283
nr_active_anon 20225
nr_inactive_file 22446
nr_active_file 6830
nr_unevictable 8
nr_mlock 8
nr_anon_pages 20171
nr_mapped 10962
nr_file_pages 35621
nr_dirty 1
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 0
nr_page_table_pages 605
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 6345
protection: (0, 0, 0, 0)
pagesets
cpu: 0
count: 155
high: 186
batch: 31
vm stats threshold: 24
cpu: 1
count: 154
high: 186
batch: 31
vm stats threshold: 24
all_unreclaimable: 0
prev_priority: 12
start_pfn: 227326
inactive_ratio: 4
recent_anon_rotated: 140735
recent_anon_scanned: 188078
recent_file_rotated: 9673
recent_file_scanned: 43796
anon_ratio: 11
> % df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda15 10317828 7308360 2485352 75% /
tmpfs 1552240 8 1552232 1% /lib/init/rw
udev 1549148 220 1548928 1% /dev
tmpfs 1552240 4 1552236 1% /dev/shm
tmpfs 1552240 32 1552208 1% /tmp
> % cat your-fills-up-the-tmpfs-script
#!/bin/bash
dd if=/dev/zero of=/tmp/tmp bs=1024k count=1600
shred -vn1 /tmp/tmp
exit 0 ### removed when testing hibernation
read -p "Press enter to hibernate..."
echo -n reboot > /sys/power/disk
echo -n disk > /sys/power/state
echo "Exit code: $?"
rm -vf /tmp/tmp
>
> 2. call shrink_all_memory() forcely and show result
> # ./script.sh # Fill up the tmpfs
> % df # My extra step (I modified the script to fill only 1400MB.)
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda15 10317828 7308408 2485304 75% /
tmpfs 1552240 8 1552232 1% /lib/init/rw
udev 1549148 220 1548928 1% /dev
tmpfs 1552240 4 1552236 1% /dev/shm
tmpfs 1552240 1435036 117204 93% /tmp
>
> % cat /proc/meminfo
MemTotal: 3104484 kB
MemFree: 1339564 kB
Buffers: 42824 kB
Cached: 1595432 kB
SwapCached: 0 kB
Active: 1557540 kB
Inactive: 161944 kB
Active(anon): 1515072 kB
Inactive(anon): 25144 kB
Active(file): 42468 kB
Inactive(file): 136800 kB
Unevictable: 32 kB
Mlocked: 32 kB
HighTotal: 2226632 kB
HighFree: 538992 kB
LowTotal: 877852 kB
LowFree: 800572 kB
SwapTotal: 1999540 kB
SwapFree: 1999540 kB
Dirty: 20 kB
Writeback: 0 kB
AnonPages: 81256 kB
Mapped: 44032 kB
Shmem: 1458992 kB
Slab: 26312 kB
SReclaimable: 18632 kB
SUnreclaim: 7680 kB
KernelStack: 1816 kB
PageTables: 2424 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3551780 kB
Committed_AS: 1772060 kB
VmallocTotal: 122880 kB
VmallocUsed: 16308 kB
VmallocChunk: 94312 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 20472 kB
DirectMap4M: 888832 kB
> % cat /proc/zoneinfo
Node 0, zone DMA
pages free 2614
min 16
low 20
high 24
scanned 0
spanned 4080
present 3951
nr_free_pages 2614
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 0
nr_active_file 0
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 0
nr_file_pages 0
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 2
nr_page_table_pages 0
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 865, 3022, 3022)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 4
cpu: 1
count: 0
high: 0
batch: 1
vm stats threshold: 4
all_unreclaimable: 0
prev_priority: 12
start_pfn: 16
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 0
recent_file_scanned: 0
anon_ratio: 30
Node 0, zone Normal
pages free 197498
min 932
low 1165
high 1398
scanned 0
spanned 223230
present 221486
nr_free_pages 197498
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 7293
nr_active_file 3466
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 1
nr_file_pages 10758
nr_dirty 4
nr_writeback 0
nr_slab_reclaimable 4658
nr_slab_unreclaimable 1918
nr_page_table_pages 0
nr_kernel_stack 227
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 0, 17259, 17259)
pagesets
cpu: 0
count: 157
high: 186
batch: 31
vm stats threshold: 16
cpu: 1
count: 81
high: 186
batch: 31
vm stats threshold: 16
all_unreclaimable: 0
prev_priority: 12
start_pfn: 4096
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 3652
recent_file_scanned: 15280
anon_ratio: 9
Node 0, zone HighMem
pages free 134717
min 128
low 709
high 1290
scanned 0
spanned 556658
present 552309
nr_free_pages 134717
nr_inactive_anon 6261
nr_active_anon 378769
nr_inactive_file 26907
nr_active_file 7152
nr_unevictable 8
nr_mlock 8
nr_anon_pages 20315
nr_mapped 11007
nr_file_pages 398782
nr_dirty 2
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 0
nr_page_table_pages 606
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 364723
protection: (0, 0, 0, 0)
pagesets
cpu: 0
count: 136
high: 186
batch: 31
vm stats threshold: 24
cpu: 1
count: 182
high: 186
batch: 31
vm stats threshold: 24
all_unreclaimable: 0
prev_priority: 12
start_pfn: 227326
inactive_ratio: 4
recent_anon_rotated: 912909
recent_anon_scanned: 1757064
recent_file_rotated: 10006
recent_file_scanned: 48952
anon_ratio: 14
> # echo 1 > /proc/sys/vm/shrink_all_memory
> # tail /var/log/messages
[ 472.454344] shrink_all_memory start
[ 472.454731] shrink_all_memory: req:1 reclaimed:29 free:334891
> % cat /proc/meminfo
MemTotal: 3104484 kB
MemFree: 1339556 kB
Buffers: 42864 kB
Cached: 1595252 kB
SwapCached: 0 kB
Active: 1557108 kB
Inactive: 162296 kB
Active(anon): 1514628 kB
Inactive(anon): 25540 kB
Active(file): 42480 kB
Inactive(file): 136756 kB
Unevictable: 32 kB
Mlocked: 32 kB
HighTotal: 2226632 kB
HighFree: 538992 kB
LowTotal: 877852 kB
LowFree: 800564 kB
SwapTotal: 1999540 kB
SwapFree: 1999540 kB
Dirty: 24 kB
Writeback: 0 kB
AnonPages: 81324 kB
Mapped: 44048 kB
Shmem: 1458884 kB
Slab: 26312 kB
SReclaimable: 18632 kB
SUnreclaim: 7680 kB
KernelStack: 1824 kB
PageTables: 2424 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3551780 kB
Committed_AS: 1771928 kB
VmallocTotal: 122880 kB
VmallocUsed: 16308 kB
VmallocChunk: 94312 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 20472 kB
DirectMap4M: 888832 kB
> % cat /proc/zoneinfo
Node 0, zone DMA
pages free 2614
min 16
low 20
high 24
scanned 0
spanned 4080
present 3951
nr_free_pages 2614
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 0
nr_active_file 0
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 0
nr_file_pages 0
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 2
nr_page_table_pages 0
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 865, 3022, 3022)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 4
cpu: 1
count: 0
high: 0
batch: 1
vm stats threshold: 4
all_unreclaimable: 0
prev_priority: 10
start_pfn: 16
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 0
recent_file_scanned: 0
anon_ratio: 30
Node 0, zone Normal
pages free 197527
min 932
low 1165
high 1398
scanned 0
spanned 223230
present 221486
nr_free_pages 197527
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 7304
nr_active_file 3466
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 1
nr_file_pages 10770
nr_dirty 5
nr_writeback 0
nr_slab_reclaimable 4657
nr_slab_unreclaimable 1918
nr_page_table_pages 0
nr_kernel_stack 228
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 0, 17259, 17259)
pagesets
cpu: 0
count: 157
high: 186
batch: 31
vm stats threshold: 16
cpu: 1
count: 67
high: 186
batch: 31
vm stats threshold: 16
all_unreclaimable: 0
prev_priority: 10
start_pfn: 4096
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 456
recent_file_scanned: 1918
anon_ratio: 9
Node 0, zone HighMem
pages free 134779
min 128
low 709
high 1290
scanned 0
spanned 556658
present 552309
nr_free_pages 134779
nr_inactive_anon 6389
nr_active_anon 378650
nr_inactive_file 26887
nr_active_file 7154
nr_unevictable 8
nr_mlock 8
nr_anon_pages 20331
nr_mapped 11014
nr_file_pages 398764
nr_dirty 2
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 0
nr_page_table_pages 606
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 364723
protection: (0, 0, 0, 0)
pagesets
cpu: 0
count: 144
high: 186
batch: 31
vm stats threshold: 24
cpu: 1
count: 115
high: 186
batch: 31
vm stats threshold: 24
all_unreclaimable: 0
prev_priority: 10
start_pfn: 227326
inactive_ratio: 4
recent_anon_rotated: 117656
recent_anon_scanned: 228960
recent_file_rotated: 1252
recent_file_scanned: 6163
anon_ratio: 14
>
>
> 3. reset zone_reclaim_stat and rerun shrink_all_memory
>
> # echo 1 > /proc/sys/vm/reset_reclaim_stat
> % cat /proc/meminfo
MemTotal: 3104484 kB
MemFree: 1339316 kB
Buffers: 42924 kB
Cached: 1595344 kB
SwapCached: 0 kB
Active: 1557224 kB
Inactive: 162344 kB
Active(anon): 1514632 kB
Inactive(anon): 25532 kB
Active(file): 42592 kB
Inactive(file): 136812 kB
Unevictable: 32 kB
Mlocked: 32 kB
HighTotal: 2226632 kB
HighFree: 538868 kB
LowTotal: 877852 kB
LowFree: 800448 kB
SwapTotal: 1999540 kB
SwapFree: 1999540 kB
Dirty: 28 kB
Writeback: 0 kB
AnonPages: 81328 kB
Mapped: 44056 kB
Shmem: 1458868 kB
Slab: 26312 kB
SReclaimable: 18636 kB
SUnreclaim: 7676 kB
KernelStack: 1816 kB
PageTables: 2424 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3551780 kB
Committed_AS: 1771932 kB
VmallocTotal: 122880 kB
VmallocUsed: 16308 kB
VmallocChunk: 94312 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 20472 kB
DirectMap4M: 888832 kB
> % cat /proc/zoneinfo
Node 0, zone DMA
pages free 2614
min 16
low 20
high 24
scanned 0
spanned 4080
present 3951
nr_free_pages 2614
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 0
nr_active_file 0
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 0
nr_file_pages 0
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 2
nr_page_table_pages 0
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 865, 3022, 3022)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 4
cpu: 1
count: 0
high: 0
batch: 1
vm stats threshold: 4
all_unreclaimable: 0
prev_priority: 10
start_pfn: 16
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 0
recent_file_scanned: 0
anon_ratio: 30
Node 0, zone Normal
pages free 197498
min 932
low 1165
high 1398
scanned 0
spanned 223230
present 221486
nr_free_pages 197498
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 7317
nr_active_file 3467
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 1
nr_file_pages 10783
nr_dirty 7
nr_writeback 0
nr_slab_reclaimable 4659
nr_slab_unreclaimable 1917
nr_page_table_pages 0
nr_kernel_stack 227
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 0, 17259, 17259)
pagesets
cpu: 0
count: 151
high: 186
batch: 31
vm stats threshold: 16
cpu: 1
count: 80
high: 186
batch: 31
vm stats threshold: 16
all_unreclaimable: 0
prev_priority: 10
start_pfn: 4096
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 1
recent_file_scanned: 4
anon_ratio: 14
Node 0, zone HighMem
pages free 134717
min 128
low 709
high 1290
scanned 0
spanned 556658
present 552309
nr_free_pages 134717
nr_inactive_anon 6387
nr_active_anon 378651
nr_inactive_file 26887
nr_active_file 7181
nr_unevictable 8
nr_mlock 8
nr_anon_pages 20369
nr_mapped 11017
nr_file_pages 398789
nr_dirty 1
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 0
nr_page_table_pages 606
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 364721
protection: (0, 0, 0, 0)
pagesets
cpu: 0
count: 155
high: 186
batch: 31
vm stats threshold: 24
cpu: 1
count: 150
high: 186
batch: 31
vm stats threshold: 24
all_unreclaimable: 0
prev_priority: 10
start_pfn: 227326
inactive_ratio: 4
recent_anon_rotated: 3636
recent_anon_scanned: 11656
recent_file_rotated: 0
recent_file_scanned: 1
anon_ratio: 40
> # echo 1 > /proc/sys/vm/shrink_all_memory
> # tail /var/log/messages
[ 627.410562] shrink_all_memory start
[ 627.410889] shrink_all_memory: req:1 reclaimed:32 free:334798
> % cat /proc/meminfo
MemTotal: 3104484 kB
MemFree: 1339184 kB
Buffers: 43048 kB
Cached: 1595396 kB
SwapCached: 0 kB
Active: 1556584 kB
Inactive: 163144 kB
Active(anon): 1513976 kB
Inactive(anon): 26336 kB
Active(file): 42608 kB
Inactive(file): 136808 kB
Unevictable: 32 kB
Mlocked: 32 kB
HighTotal: 2226632 kB
HighFree: 538744 kB
LowTotal: 877852 kB
LowFree: 800440 kB
SwapTotal: 1999540 kB
SwapFree: 1999540 kB
Dirty: 8 kB
Writeback: 0 kB
AnonPages: 81340 kB
Mapped: 44104 kB
Shmem: 1459032 kB
Slab: 26316 kB
SReclaimable: 18640 kB
SUnreclaim: 7676 kB
KernelStack: 1824 kB
PageTables: 2424 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3551780 kB
Committed_AS: 1772116 kB
VmallocTotal: 122880 kB
VmallocUsed: 16308 kB
VmallocChunk: 94312 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 20472 kB
DirectMap4M: 888832 kB
> % cat /proc/zoneinfo
Node 0, zone DMA
pages free 2614
min 16
low 20
high 24
scanned 0
spanned 4080
present 3951
nr_free_pages 2614
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 0
nr_active_file 0
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 0
nr_file_pages 0
nr_dirty 0
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 2
nr_page_table_pages 0
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 865, 3022, 3022)
pagesets
cpu: 0
count: 0
high: 0
batch: 1
vm stats threshold: 4
cpu: 1
count: 0
high: 0
batch: 1
vm stats threshold: 4
all_unreclaimable: 0
prev_priority: 9
start_pfn: 16
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 0
recent_file_scanned: 0
anon_ratio: 30
Node 0, zone Normal
pages free 197496
min 932
low 1165
high 1398
scanned 0
spanned 223230
present 221486
nr_free_pages 197496
nr_inactive_anon 0
nr_active_anon 0
nr_inactive_file 7344
nr_active_file 3471
nr_unevictable 0
nr_mlock 0
nr_anon_pages 0
nr_mapped 1
nr_file_pages 10814
nr_dirty 27
nr_writeback 0
nr_slab_reclaimable 4660
nr_slab_unreclaimable 1917
nr_page_table_pages 0
nr_kernel_stack 228
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 0
protection: (0, 0, 17259, 17259)
pagesets
cpu: 0
count: 116
high: 186
batch: 31
vm stats threshold: 16
cpu: 1
count: 61
high: 186
batch: 31
vm stats threshold: 16
all_unreclaimable: 0
prev_priority: 9
start_pfn: 4096
inactive_ratio: 1
recent_anon_rotated: 0
recent_anon_scanned: 0
recent_file_rotated: 5
recent_file_scanned: 39
anon_ratio: 6
Node 0, zone HighMem
pages free 133632
min 128
low 709
high 1290
scanned 0
spanned 556658
present 552309
nr_free_pages 133632
nr_inactive_anon 7700
nr_active_anon 378501
nr_inactive_file 26857
nr_active_file 7181
nr_unevictable 8
nr_mlock 8
nr_anon_pages 20335
nr_mapped 11025
nr_file_pages 399912
nr_dirty 1
nr_writeback 0
nr_slab_reclaimable 0
nr_slab_unreclaimable 0
nr_page_table_pages 606
nr_kernel_stack 0
nr_unstable 0
nr_bounce 0
nr_vmscan_write 0
nr_writeback_temp 0
nr_isolated_anon 0
nr_isolated_file 0
nr_shmem 365874
protection: (0, 0, 0, 0)
pagesets
cpu: 0
count: 90
high: 186
batch: 31
vm stats threshold: 24
cpu: 1
count: 164
high: 186
batch: 31
vm stats threshold: 24
all_unreclaimable: 0
prev_priority: 9
start_pfn: 227326
inactive_ratio: 4
recent_anon_rotated: 7752
recent_anon_scanned: 27187
recent_file_rotated: 0
recent_file_scanned: 42
anon_ratio: 3
--
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