Messages in this thread | | | Date | Sun, 16 May 2004 03:01:36 -0700 | From | Andrew Morton <> | Subject | Re: 1352 NUL bytes at the end of a page? (was Re: Assertion `s && s->tree' failed: The saga continues.) |
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Steven Cole <elenstev@mesatop.com> wrote: > > The script only reported one > iteration finished, while I got it to do 36 iterations over several hours earlier > today (with a 2.6.3-4mdk vendor kernel), so I'm going to add some timing > tests to the script to see if things are really slowing down with current kernels, > or if it's just my worried imaginings.
I did a bit of testing on a 256MB laptop with a fairly slow disk, ext3. Three iterations of the test took:
2.6.6: 1055.53s user 327.14s system 32% cpu 1:10:06.71 total
2.4.27-pre2: 1042.03s user 307.21s system 32% cpu 1:09:46.00 total
2.6.3: 1053.23s user 326.16s system 27% cpu 1:22:07.24 total
So there's nothing particularly wild there. It's possible I guess that the 2.6 VM is very sucky but something else made up for it - possibly the anticipatory scheduler but more likely the Orlov allocator.
You're using reiserfs, yes?
Are you sure the IDE disks are in DMA mode? - 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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