lkml.org 
[lkml]   [2001]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: 2.4.11-pre2-xfs
Date
From
> 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

OK, in which case I doubt that the changes XFS has in the kernel will
be influencing things - except xfs filesystems elsewhere on the system
will have hold of memory, although it should be reclaimable from ext2
just fine.

>
> > > 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>

Oh well, thats really useful, maybe __alloc_pages should report on its
caller's caller.

>
> 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?


Probably kernel, but I am not really an expert on this part of the system,
is your swap a device or a file on a filesystem?

>
>
>
> 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 % |
> ----------------------------------------------------------------------'
>
>

That's good to see,

Thanks

Steve

>
>
>
>
> --
> 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/
>


-
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/

\
 
 \ /
  Last update: 2005-03-22 13:04    [W:0.055 / U:2.452 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site