Allocation failures

[Seth Mos <knuffie@xxxxxxxxx>]

Hi,

Dell PE 2500
dual 1.13Ghz
2GB ram
200GB hardware raid 10 on Ami Megaraid

Kernel 2.4.10-xfs compiled with HIGHMEM and SMP.

Oct  4 13:07:38 coltex-2 kernel: __alloc_pages: 0-order allocation failed 
(gfp=0x70/0) from c0133a20
Oct  4 13:07:38 coltex-2 kernel: __alloc_pages: 0-order allocation failed 
(gfp=0xf0/0) from c016cc43
Oct  4 13:07:38 coltex-2 kernel: __alloc_pages: 0-order allocation failed 
(gfp=0xf0/0) from c016cc43
Oct  4 13:07:38 coltex-2 kernel: __alloc_pages: 0-order allocation failed 
(gfp=0x1f0/0) from c01300c0
Oct  4 13:07:38 coltex-2 kernel: __alloc_pages: 0-order allocation failed 
(gfp=0xf0/0) from c016cc43
Oct  4 13:07:38 coltex-2 kernel: __alloc_pages: 0-order allocation failed 
(gfp=0x70/0) from c0133a20
Oct  4 13:07:39 coltex-2 last message repeated 8 times

During this time bash reported that a executable did not exist any more. A 
second attempt did work.
The system was already running the mongo.pl benchmarks for about 1 hour.
The benchmark was testing ext2 during this error. All the in use 
filesystems are XFS filesystems mounted without extra options.
The test was running on the 200GB hardware raid partition.

The mongo command (5 processes):
./mongo.pl ext2 /dev/sda11 /users ext2_results5 5

During the error mongo.pl was working on:
4.Read   files of median size 100 bytes (5 processes)...
Read   :

The error that this binary did not exist anymore. (/usr is xfs)
[root@coltex-2 /root]# sar
bash: /usr/bin/sar: No such file or directory
[root@coltex-2 /root]# sar
Linux 2.4.10-xfs (coltex-2.coltex.nl)   10/04/2001

11:01:00 AM       CPU     %user     %nice   %system     %idle
11:11:00 AM       all      3.92      0.00     51.46     44.63
<snip>

The output from mount:
/dev/sda1 on / type xfs (rw)
none on /proc type proc (rw)
/dev/sda9 on /home type xfs (rw)
/dev/sda10 on /tmp type xfs (rw)
/dev/sda5 on /usr type xfs (rw)
/dev/sda8 on /var type xfs (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda11 on /users type ext2 (rw)

I did not expect this system to just report that binaries in /usr should 
vanish and return.

This kernel was compiled with gcc-2.96-85. I will install egcs-compat 
shortly and retest. If someone has interest in this please contact me.

Cheers
--
Seth
Every program has two purposes one for which
it was written and another for which it wasn't
I use the last kind.