memory problem with fec on 8250
Wojciech Kromer
krom at dgt-lab.com.pl
Thu Dec 4 20:45:54 EST 2003
Użytkownik Eugene Surovegin napisał:
>On Thu, Dec 04, 2003 at 09:45:53AM +0100, Wojciech Kromer wrote:
>
>
>>>i have some problems with using fec device on my custom 8250 board
>>>while sending a lot of data (at least 300MB) through this device causes
>>>lack of memory
>>>sending same amount of data through loopback works fine
>>>
>>>i'm using 2.4.19 kernel
>>>any idea?
>>>
>>>
>>cached memory keeps growing slowly, and free is going down same way,
>>after putting ~300MB ftp data (from 8250 board to another host), VM
>>starts killing some applications
>>
>>same situation is with latest linuxppc_2_4_devel kernel from denx.de,
>>but there is additional information from kernel
>>
>><5>__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
>><5>__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
>><5>__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
>><5>__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
>><5>__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
>><4>VM: killing process sshd
>>
>>what's wrong ???
>>
>>
>
>It means that this box is really out of memory.
>
>
sure, but _why_? thre are no memory consuption processes,
i've just run ftp-put from this box to another machine
>Could you provide output from utility called 'free' and from file
>/proc/slabinfo at two points of time: 1) when you just booted your
>boax and 2) just before it starts failing.
>
>
>
thx for quick answer
huh, a lot of info:
==== at begining =========================================
bash-2.05# free
total used free shared buffers cached
Mem: 127888 22488 105400 0 0 15272
-/+ buffers/cache: 7216 120672
Swap: 0 0 0
bash-2.05# cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 62 68 112 2 2 1
tcp_tw_bucket 0 0 96 0 0 1
tcp_bind_bucket 3 113 32 1 1 1
tcp_open_request 0 59 64 0 1 1
inet_peer_cache 2 59 64 1 1 1
ip_fib_hash 10 113 32 1 1 1
ip_dst_cache 27 48 160 2 2 1
arp_cache 4 30 128 1 1 1
blkdev_requests 0 0 96 0 0 1
nfs_write_data 0 10 384 0 1 1
nfs_read_data 0 40 384 0 4 1
nfs_page 0 40 96 0 1 1
devfsd_event 0 0 20 0 0 1
journal_head 0 0 48 0 0 1
revoke_table 0 0 12 0 0 1
revoke_record 0 0 32 0 0 1
dnotify_cache 0 0 20 0 0 1
file_lock_cache 2 40 96 1 1 1
fasync_cache 0 0 16 0 0 1
uid_cache 0 0 32 0 0 1
skbuff_head_cache 131 192 160 8 8 1
sock 21 25 800 5 5 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 64 0 0 1
cdev_cache 10 59 64 1 1 1
bdev_cache 0 0 64 0 0 1
mnt_cache 11 59 64 1 1 1
inode_cache 419 424 480 53 53 1
dentry_cache 601 630 128 21 21 1
filp 175 180 128 6 6 1
names_cache 0 3 4096 0 3 1
buffer_head 0 0 96 0 0 1
mm_struct 14 24 160 1 1 1
vm_area_struct 462 560 96 12 14 1
fs_cache 13 113 32 1 1 1
files_cache 14 18 416 2 2 1
signal_act 16 21 1312 6 7 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 0 0 32768 0 0 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 10 10 4096 10 10 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 5 178 2048 3 89 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 17 24 1024 5 6 1
size-512(DMA) 0 0 512 0 0 1
size-512 6 8 512 1 1 1
size-256(DMA) 0 0 256 0 0 1
size-256 14 30 256 1 2 1
size-128(DMA) 0 0 128 0 0 1
size-128 829 930 128 31 31 1
size-64(DMA) 0 0 64 0 0 1
size-64 41 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 201 226 32 2 2 1
===after some time (ftp put ~75MB) ================================
bash-2.05# free;cat /proc/slabinfo
total used free shared buffers cached
Mem: 127888 125688 2200 0 0 81772
-/+ buffers/cache: 43916 83972
Swap: 0 0 0
slabinfo - version: 1.1
kmem_cache 62 68 112 2 2 1
tcp_tw_bucket 0 0 96 0 0 1
tcp_bind_bucket 5 113 32 1 1 1
tcp_open_request 0 0 64 0 0 1
inet_peer_cache 1 59 64 1 1 1
ip_fib_hash 10 113 32 1 1 1
ip_dst_cache 51 72 160 3 3 1
arp_cache 3 30 128 1 1 1
blkdev_requests 0 0 96 0 0 1
nfs_write_data 0 0 384 0 0 1
nfs_read_data 7 70 384 4 7 1
nfs_page 7 80 96 2 2 1
devfsd_event 0 0 20 0 0 1
journal_head 0 0 48 0 0 1
revoke_table 0 0 12 0 0 1
revoke_record 0 0 32 0 0 1
dnotify_cache 0 0 20 0 0 1
file_lock_cache 2 40 96 1 1 1
fasync_cache 0 0 16 0 0 1
uid_cache 0 0 32 0 0 1
skbuff_head_cache 16857 16872 160 703 703 1
sock 23 25 800 5 5 1
sigqueue 0 29 132 0 1 1
kiobuf 0 0 64 0 0 1
cdev_cache 10 59 64 1 1 1
bdev_cache 0 0 64 0 0 1
mnt_cache 11 59 64 1 1 1
inode_cache 435 440 480 55 55 1
dentry_cache 625 630 128 21 21 1
filp 179 180 128 6 6 1
names_cache 0 2 4096 0 2 1
buffer_head 0 0 96 0 0 1
mm_struct 15 24 160 1 1 1
vm_area_struct 485 520 96 13 13 1
fs_cache 14 113 32 1 1 1
files_cache 15 18 416 2 2 1
signal_act 17 18 1312 6 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 0 0 32768 0 0 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 10 10 4096 10 10 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 16749 16798 2048 8382 8399 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 18 20 1024 5 5 1
size-512(DMA) 0 0 512 0 0 1
size-512 24 32 512 4 4 1
size-256(DMA) 0 0 256 0 0 1
size-256 51 75 256 4 5 1
size-128(DMA) 0 0 128 0 0 1
size-128 910 930 128 31 31 1
size-64(DMA) 0 0 64 0 0 1
size-64 42 59 64 1 1 1
size-32(DMA) 0 0 32 0 0 1
size-32 8513 8588 32 76 76 1
--
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