* Re: Memory leak in the ramfs file system
2001-03-29 23:48 ` Linus Torvalds
@ 2000-06-12 20:50 ` Jaswinder Singh
2001-03-30 9:43 ` Jeff Garzik
0 siblings, 1 reply; 9+ messages in thread
From: Jaswinder Singh @ 2000-06-12 20:50 UTC (permalink / raw)
To: linux-kernel, Linus Torvalds, Jamey Hicks
Cc: Stephen L Johnson, Jaswinder Singh
[-- Attachment #1: Type: text/plain, Size: 728 bytes --]
Dear Linus,
> What does /proc/slabinfo say? The most likely leak is a dentry leak or
> an inode leak, and both of those should be fairly easy to see in the
> slab info (dentry_cache and inode_cache respectively).
>
I am attaching details before and during my application .
Mainly changes are in dentry_cache and inode_cache , but i am attaching
whole /proc/slabinfo for your reference.
> Obviously, it could be a data page leak too, but such a leak should be
> easy to see by creating a few big files and deleting them..
>
> Linus
I am also facing one more problem with ramfs.
du and df shows 0 , so i am also attaching its output.
Thanks for your help,
Best Regards,
Jaswinder.
--
These are my opinions not 3Di.
[-- Attachment #2: beforeapp.txt --]
[-- Type: text/plain, Size: 3885 bytes --]
Before my Application Start
---------------------------
(none):/mnt/ramfs/root# cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 31571968 18669568 12902400 0 24576 12156928
Swap: 0 0 0
MemTotal: 30832 kB
MemFree: 12600 kB
MemShared: 0 kB
Buffers: 24 kB
Cached: 11872 kB
Active: 4456 kB
Inact_dirty: 508 kB
Inact_clean: 6932 kB
Inact_target: 8 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 30832 kB
LowFree: 12600 kB
SwapTotal: 0 kB
SwapFree: 0 kB
(none):/mnt/ramfs/root# free
total used free shared buffers cached
Mem: 30832 18284 12548 0 24 11916
-/+ buffers/cache: 6344 24488
Swap: 0 0 0
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 5 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 11 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 30 35 800 6 7 1
inode_cache 2218 2220 384 222 222 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 2351 2370 128 79 79 1
filp 125 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 13 24 160 1 1 1
vm_area_struct 268 354 64 5 6 1
fs_cache 12 59 64 1 1 1
files_cache 12 18 416 2 2 1
signal_act 14 15 1312 5 5 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 3 4 4096 3 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 6 8 2048 3 4 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 16 1024 3 4 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 43 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 116 226 32 2 2 1
[-- Attachment #3: duringapp.txt --]
[-- Type: text/plain, Size: 33856 bytes --]
when my Application is running : i am able to take only 11 slabinfo details then my machine hanged
------------------------------
(none):/mnt/ramfs/root# free
total used free shared buffers cached
Mem: 30832 20792 10040 0 24 13992
-/+ buffers/cache: 6776 24056
Swap: 0 0 0
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 3439 3440 384 344 344 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 3573 3600 128 120 120 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 30 2048 15 15 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 127 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 3809 3810 384 381 381 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 3943 3960 128 132 132 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 30 2048 15 15 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 127 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 4194 4200 384 420 420 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 4328 4350 128 145 145 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 128 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 4506 4510 384 451 451 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 4640 4650 128 155 155 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 24 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 128 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 4896 4900 384 490 490 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 5030 5040 128 168 168 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 128 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 5306 5310 384 531 531 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 5440 5460 128 182 182 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 128 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 5702 5710 384 571 571 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 5836 5850 128 195 195 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 9 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 16 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 128 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 4994 5780 384 578 578 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 4893 5820 128 194 194 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 13 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 113 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 40 96 0 1 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 42 92 0 1 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 5268 5780 384 578 578 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 5266 5820 128 194 194 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 13 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 113 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 0 96 0 0 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 0 92 0 0 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 5624 5780 384 578 578 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 5618 5820 128 194 194 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 17 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 18 1312 5 6 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 113 226 32 2 2 1
(none):/mnt/ramfs/root# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 53 78 100 2 2 1
tcp_tw_bucket 0 0 96 0 0 1
tcp_bind_bucket 6 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 0 0 64 0 0 1
ip_fib_hash 8 113 32 1 1 1
ip_dst_cache 9 24 160 1 1 1
arp_cache 2 30 128 1 1 1
blkdev_requests 256 280 96 7 7 1
dnotify cache 0 0 20 0 0 1
file lock cache 0 0 92 0 0 1
fasync cache 2 202 16 1 1 1
uid_cache 1 113 32 1 1 1
skbuff_head_cache 84 120 160 4 5 1
sock 31 35 800 7 7 1
inode_cache 5727 5780 384 578 578 1
bdev_cache 48 59 64 1 1 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 128 0 0 1
dentry_cache 5721 5820 128 194 194 1
filp 127 160 96 4 4 1
names_cache 0 2 4096 0 2 1
buffer_head 21 40 96 1 1 1
mm_struct 14 24 160 1 1 1
vm_area_struct 279 354 64 5 6 1
fs_cache 13 59 64 1 1 1
files_cache 13 18 416 2 2 1
signal_act 15 15 1312 5 5 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 0 0 65536 0 0 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 0 0 16384 0 0 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 0 0 8192 0 0 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 4 4 4096 4 4 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 30 32 2048 15 16 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 9 20 1024 3 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 23 32 512 3 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 20 60 256 2 4 1
size-128(DMA) 0 0 128 0 0 1
size-128 366 450 128 13 15 1
size-64(DMA) 0 0 64 0 0 1
size-64 44 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 113 226 32 2 2 1
Linux hanged here
[-- Attachment #4: dfdu.txt --]
[-- Type: text/plain, Size: 1438 bytes --]
(none):/mnt/ramfs/root# df -h /mnt/ramfs/
Filesystem Size Used Avail Use% Mounted on
ramfs 0 0 0 - /mnt/ramfs
(none):/mnt/ramfs/root# du /mnt/ramfs/
0 /mnt/ramfs/var/modules
0 /mnt/ramfs/var/run
0 /mnt/ramfs/var/local
0 /mnt/ramfs/var/lock
0 /mnt/ramfs/var/tmp
0 /mnt/ramfs/var/log
0 /mnt/ramfs/var
0 /mnt/ramfs/tmp/.X11-unix
0 /mnt/ramfs/tmp
0 /mnt/ramfs/root/.classifiers
0 /mnt/ramfs/root
0 /mnt/ramfs/home/guest
0 /mnt/ramfs/home/ppp
0 /mnt/ramfs/home
0 /mnt/ramfs/etc/pcmcia/cis
0 /mnt/ramfs/etc/pcmcia
0 /mnt/ramfs/etc/wlan
0 /mnt/ramfs/etc/rc2.d
0 /mnt/ramfs/etc/cron.daily
0 /mnt/ramfs/etc/rc6.d
0 /mnt/ramfs/etc/alternatives
0 /mnt/ramfs/etc/modutils/arch
0 /mnt/ramfs/etc/modutils
0 /mnt/ramfs/etc/sysconfig
0 /mnt/ramfs/etc/rc.boot
0 /mnt/ramfs/etc/rc5.d
0 /mnt/ramfs/etc/irda
0 /mnt/ramfs/etc/rc0.d
0 /mnt/ramfs/etc/cron.d
0 /mnt/ramfs/etc/rcS.d
0 /mnt/ramfs/etc/rc4.d
0 /mnt/ramfs/etc/rc1.d
0 /mnt/ramfs/etc/apt
0 /mnt/ramfs/etc/skel
0 /mnt/ramfs/etc/default
0 /mnt/ramfs/etc/init.d
0 /mnt/ramfs/etc/rc3.d
0 /mnt/ramfs/etc/rc.d/init.d
0 /mnt/ramfs/etc/rc.d
0 /mnt/ramfs/etc/ppp
0 /mnt/ramfs/etc
0 /mnt/ramfs
(none):/mnt/ramfs/root#
^ permalink raw reply [flat|nested] 9+ messages in thread
* Memory leak in the ramfs file system
@ 2001-03-29 22:06 Stephen L Johnson
2001-03-29 23:48 ` Linus Torvalds
0 siblings, 1 reply; 9+ messages in thread
From: Stephen L Johnson @ 2001-03-29 22:06 UTC (permalink / raw)
To: linux-kernel
A group of us from the handhelds.org site think that we have found a memory
leak in the ramfs file system. After a long period of create and deleting
small files in a mounted ramfs partition we have substantially less freemem.
The problem has been confirmed on 2.4.2 on an i386 and StormARM ports.
The problem was found by a developer running an application on an iPAQ that
quickly writes a 4K file to the ramfs, does some editing of the file and it
then deleted. The application will quickly eat up all free memory and cause
the platform to fail within 5 minutes.
Test case: from a shell, run this short script for a long period of time (over
1 hour):
i=0 ; while : ; do echo 1 >$i ; rm $i ; i=`expr $i + 1` ; done
This test was run on an Compaq iPAQ 3650 using the 2.4.2-rmk1-np3 kernel from
the CVS repository on cvs.handhelds.org.
The following two data points are the output from /proc/meminfo. The first
'cat' was done about 1 minute after the loop has been running. The second
'cat' was done 10 minutes after the script loop had been killed.
# cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 31686656 21446656 10240000 0 0 11264000
Swap: 0 0 0
MemTotal: 30944 kB
MemFree: 10000 kB
MemShared: 0 kB
Buffers: 0 kB
Cached: 11000 kB
Active: 4656 kB
Inact_dirty: 4220 kB
Inact_clean: 2124 kB
Inact_target: 0 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 30944 kB
LowFree: 10000 kB
SwapTotal: 0 kB
SwapFree: 0 kB
# cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 31686656 24178688 7507968 0 0 12357632
Swap: 0 0 0
MemTotal: 30944 kB
MemFree: 7332 kB
MemShared: 0 kB
Buffers: 0 kB
Cached: 12068 kB
Active: 4560 kB
Inact_dirty: 5384 kB
Inact_clean: 2124 kB
Inact_target: 16 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 30944 kB
LowFree: 7332 kB
SwapTotal: 0 kB
SwapFree: 0 kB
--
Stephen L Johnson <sjohnson@monsters.org>
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
2001-03-29 22:06 Memory leak in the ramfs file system Stephen L Johnson
@ 2001-03-29 23:48 ` Linus Torvalds
2000-06-12 20:50 ` Jaswinder Singh
0 siblings, 1 reply; 9+ messages in thread
From: Linus Torvalds @ 2001-03-29 23:48 UTC (permalink / raw)
To: linux-kernel
In article <200103292206.f2TM6sJ10808@zero.monsters.org>,
Stephen L Johnson <sjohnson@monsters.org> wrote:
>
>A group of us from the handhelds.org site think that we have found a memory
>leak in the ramfs file system. After a long period of create and deleting
>small files in a mounted ramfs partition we have substantially less freemem.
>The problem has been confirmed on 2.4.2 on an i386 and StormARM ports.
What does /proc/slabinfo say? The most likely leak is a dentry leak or
an inode leak, and both of those should be fairly easy to see in the
slab info (dentry_cache and inode_cache respectively).
Obviously, it could be a data page leak too, but such a leak should be
easy to see by creating a few big files and deleting them..
Linus
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
2001-03-13 1:03 Fw: " Jaswinder Singh
@ 2001-03-30 1:39 ` Jaswinder Singh
0 siblings, 0 replies; 9+ messages in thread
From: Jaswinder Singh @ 2001-03-30 1:39 UTC (permalink / raw)
To: Jaswinder Singh, Linus Torvalds, Jamey Hicks, linux-kernel
Cc: Stephen L Johnson
There is some problem in my computer's clock . please do not mind .
I am sorry for inconvenience.
Jaswinder.
----- Original Message -----
From: "Jaswinder Singh" <jaswinder.singh@3disystems.com>
To: "Linus Torvalds" <torvalds@transmeta.com>; "Jamey Hicks"
<jamey@crl.dec.com>; <linux-kernel@vger.kernel.org>
Cc: "Stephen L Johnson" <sjohnson@monsters.org>; "Jaswinder Singh"
<jaswinder.singh@3disystems.com>
Sent: Monday, March 12, 2001 5:03 PM
Subject: Fw: Memory leak in the ramfs file system
> I am sorry, i am sending this mail again because earlier my Computer's
time
> was not set properly.
>
> Jaswinder
>
> ----- Original Message -----
> From: "Jaswinder Singh" <jaswinder.singh@3disystems.com>
> To: <linux-kernel@vger.kernel.org>; "Linus Torvalds"
> <torvalds@transmeta.com>; "Jamey Hicks" <jamey@crl.dec.com>
> Cc: "Stephen L Johnson" <sjohnson@monsters.org>; "Jaswinder Singh"
> <jaswinder.singh@3disystems.com>
> Sent: Monday, June 12, 2000 12:50 PM
> Subject: Re: Memory leak in the ramfs file system
>
>
> > Dear Linus,
> >
> >
> > > What does /proc/slabinfo say? The most likely leak is a dentry leak or
> > > an inode leak, and both of those should be fairly easy to see in the
> > > slab info (dentry_cache and inode_cache respectively).
> > >
> >
> > I am attaching details before and during my application .
> >
> > Mainly changes are in dentry_cache and inode_cache , but i am attaching
> > whole /proc/slabinfo for your reference.
> >
> >
> > > Obviously, it could be a data page leak too, but such a leak should be
> > > easy to see by creating a few big files and deleting them..
> > >
> > > Linus
> >
> > I am also facing one more problem with ramfs.
> >
> > du and df shows 0 , so i am also attaching its output.
> >
> > Thanks for your help,
> >
> > Best Regards,
> >
> > Jaswinder.
> > --
> > These are my opinions not 3Di.
> >
> >
> >
> >
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
@ 2001-03-30 3:10 Amit D Chaudhary
2001-03-30 9:45 ` Jeff Garzik
0 siblings, 1 reply; 9+ messages in thread
From: Amit D Chaudhary @ 2001-03-30 3:10 UTC (permalink / raw)
To: linux-kernel
>(none):/mnt/ramfs/root# df -h /mnt/ramfs/
>Filesystem Size Used Avail Use% Mounted on
>ramfs 0 0 0 - /mnt/ramfs
I am not sure, how related this is, but we have / on ramfs and using rpm
to install(-iUvh) fails with the mesages, need 12K on /
Amit
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
2000-06-12 20:50 ` Jaswinder Singh
@ 2001-03-30 9:43 ` Jeff Garzik
0 siblings, 0 replies; 9+ messages in thread
From: Jeff Garzik @ 2001-03-30 9:43 UTC (permalink / raw)
To: Jaswinder Singh
Cc: linux-kernel, Linus Torvalds, Jamey Hicks, Stephen L Johnson
On Mon, 12 Jun 2000, Jaswinder Singh wrote:
> > What does /proc/slabinfo say? The most likely leak is a dentry leak or
> > an inode leak, and both of those should be fairly easy to see in the
> > slab info (dentry_cache and inode_cache respectively).
> >
>
> I am attaching details before and during my application .
>
> Mainly changes are in dentry_cache and inode_cache , but i am attaching
> whole /proc/slabinfo for your reference.
Would it be possible for you to attached a 'before' picture of slabinfo,
as well as 'after'?
> > Obviously, it could be a data page leak too, but such a leak should be
> > easy to see by creating a few big files and deleting them..
> >
> > Linus
>
> I am also facing one more problem with ramfs.
>
> du and df shows 0 , so i am also attaching its output.
I don't recall how du works exactly... if it uses stat(2), it should not
be broken AFAIK.
As for 'df', that will definitely show zero, because ramfs does not do
filesystem accounting in its present form. You might consider trying a
modified version of ramfs, as found in Alan Cox's 'ac' patchkit. This
patchkit includes a modified ramfs which supports limiting filesystem
size, but more importantly (for you), it should make 'df' work again.
Jeff
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
2001-03-30 3:10 Amit D Chaudhary
@ 2001-03-30 9:45 ` Jeff Garzik
2001-03-30 17:29 ` Amit D Chaudhary
0 siblings, 1 reply; 9+ messages in thread
From: Jeff Garzik @ 2001-03-30 9:45 UTC (permalink / raw)
To: Amit D Chaudhary; +Cc: linux-kernel
On Thu, 29 Mar 2001, Amit D Chaudhary wrote:
> >(none):/mnt/ramfs/root# df -h /mnt/ramfs/
> >Filesystem Size Used Avail Use% Mounted on
> >ramfs 0 0 0 - /mnt/ramfs
> I am not sure, how related this is, but we have / on ramfs and using rpm
> to install(-iUvh) fails with the mesages, need 12K on /
This is normal -- ramfs doesn't do filesystem accounting needed for 'df'.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
2001-03-30 9:45 ` Jeff Garzik
@ 2001-03-30 17:29 ` Amit D Chaudhary
0 siblings, 0 replies; 9+ messages in thread
From: Amit D Chaudhary @ 2001-03-30 17:29 UTC (permalink / raw)
To: Jeff Garzik; +Cc: linux-kernel
Hi,
Thanks for the reply.
So the question next would be whether ramfs will include features to make it
viable or stay with less features with the aim of keeping it simple.
Today, plan to check the 2-4.2-ac2x series to see if they fix this.
Regards
Amit
Jeff Garzik wrote:
> On Thu, 29 Mar 2001, Amit D Chaudhary wrote:
>
>> >(none):/mnt/ramfs/root# df -h /mnt/ramfs/
>> >Filesystem Size Used Avail Use% Mounted on
>> >ramfs 0 0 0 - /mnt/ramfs
>> I am not sure, how related this is, but we have / on ramfs and using rpm
>> to install(-iUvh) fails with the mesages, need 12K on /
>
>
> This is normal -- ramfs doesn't do filesystem accounting needed for 'df'.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Memory leak in the ramfs file system
@ 2001-03-30 19:43 Amit D Chaudhary
0 siblings, 0 replies; 9+ messages in thread
From: Amit D Chaudhary @ 2001-03-30 19:43 UTC (permalink / raw)
To: linux-kernel
Hi,
After testing with patch-2.4.2-ac28, the df commands works fine on a dir
mounted as ramfs. Also, it recognizes the limits set, etc.
Thanks to David Gibson, Alan and others for making this available.
Regards
Amit
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2001-03-30 19:39 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2001-03-29 22:06 Memory leak in the ramfs file system Stephen L Johnson
2001-03-29 23:48 ` Linus Torvalds
2000-06-12 20:50 ` Jaswinder Singh
2001-03-30 9:43 ` Jeff Garzik
-- strict thread matches above, loose matches on Subject: below --
2001-03-30 19:43 Amit D Chaudhary
2001-03-30 3:10 Amit D Chaudhary
2001-03-30 9:45 ` Jeff Garzik
2001-03-30 17:29 ` Amit D Chaudhary
2001-03-13 1:03 Fw: " Jaswinder Singh
2001-03-30 1:39 ` Jaswinder Singh
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