Hello Steve Lord,
> > 2. kernel 2.4.11-pre2-xfs, with highmem support
> > 3. create ramdisk 512Mb and run "tiotest -c -f 110"
>
> And what type of filesystems were used? I am presuming XFS.
ext2 & xfs , but whis test with ext2
> > 4.
> > __alloc_pages: 0-order allocation failed (gfp=0x3d0/0) from c0127fe9
> > __alloc_pages: 0-order allocation failed (gfp=0x2f0/0) from c0127fe9
> > __alloc_pages: 0-order allocation failed (gfp=0x70/0) from c0127fe9
> > __alloc_pages: 0-order allocation failed (gfp=0x2f0/0) from c0127fe9
> > __alloc_pages: 0-order allocation failed (gfp=0x70/0) from c0127fe9
> Can you map that address onto a symbol by any chance?
#/ksymoops-2.4.3/ksymoops -A c0127fe9 -m /boot/System.map
...
Adhoc c0127fe8 <_alloc_pages+18/20>
6.
...
swap_dup: Bad swap file entry 3f41e02c
VM: killing process forwarderng
swap_free: Bad swap offset entry 3ce50000
swap_free: Bad swap file entry 3f41e02c
swap_free: Bad swap offset entry 38bb5000
...
What is it? Kernel or may be my hardware problem?
7. Interesting result (xfs speed):
buran:~ # cat ram_disk_ext2
buran:/ramdisk0/tiobench-0.3.1 # while (true) do ./tiotest -c -f 110 ;
sleep
60; done
Tiotest results for 4 concurrent io threads:
,----------------------------------------------------------------------.
| Item | Time | Rate | Usr CPU | Sys CPU |
+-----------------------+----------+--------------+----------+---------+
| Write 440 MBs | 17.9 s | 24.646 MB/s | 0.7 % | 60.8 % |
| Random Write 16 MBs | 0.5 s | 28.593 MB/s | 1.8 % | 60.4 % |
| Read 440 MBs | 14.1 s | 31.167 MB/s | 28.3 % | 43.6 % |
| Random Read 16 MBs | 0.5 s | 33.751 MB/s | 30.2 % | 51.8 % |
----------------------------------------------------------------------'
buran:~ # cat ram_disk_xfs
buran:/ramdisk0/tiobench-0.3.1 # while (true) do ./tiotest -c -f 110 ;
sleep
60; done
Tiotest results for 4 concurrent io threads:
,----------------------------------------------------------------------.
| Item | Time | Rate | Usr CPU | Sys CPU |
+-----------------------+----------+--------------+----------+---------+
| Write 440 MBs | 7.9 s | 55.974 MB/s | 1.8 % | 71.4 % |
| Random Write 16 MBs | 0.3 s | 45.764 MB/s | 0.0 % | 55.6 % |
| Read 440 MBs | 11.1 s | 39.529 MB/s | 38.0 % | 34.3 % |
| Random Read 16 MBs | 0.5 s | 32.868 MB/s | 27.3 % | 42.1 % |
----------------------------------------------------------------------'
-- bye. Andrey Nekrasov, SpyLOG. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun Oct 07 2001 - 21:00:34 EST