Messages in this thread |  | | Date | Fri, 5 Oct 2001 02:22:13 +0400 | From | Andrey Nekrasov <> | Subject | Re: 2.4.11-pre2-xfs |
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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/
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