Re: memory problem with fec on 8250

On Thu, Dec 04, 2003 at 09:45:53AM +0100, Wojciech Kromer wrote:

quoted

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.

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.

Thanks,

Eugene.

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