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SubjectRe: [PATCH 2/2] move slab pages to the lru, for 2.5.27
On Wed, 2002-07-24 at 14:28, Steven Cole wrote:
> I finally got some time for more testing, and I booted this very same
> 2.5.25-rmap-slablru kernel on the same machine, and this time it booted
2.5.27-rmap-slablru I meant to say.
> just fine. Then I began to exercise the box a little by running dbench
> with increasing numbers of clients. At 28 clients, I got this:
On closer inspection, these errors began at 6 clients.
> (31069) open CLIENTS/CLIENT16/~DMTMP/WORDPRO/BENCHS1.PRN failed for handle 4148 (Cannot allocate memory)
> (31070) nb_close: handle 4148 was not open
> (31073) unlink CLIENTS/CLIENT16/~DMTMP/WORDPRO/BENCHS1.PRN failed (No such file or directory)
> Right after starting 32 dbench clients, the box locked up, no longer
> responding to the keyboard. It did respond to pings, but nothing else.
> This hardware does run other kernels successfully, most recently
> 2.4.19-rc3-ac3 and dbench 128 (load over 100).

I then tried rebooting 2.5.27-rmap-slablru with /home mounted as ext3,
and immediately after starting dbench 1, I got this message about 10
times or so:

ENOMEM in do_get_write_access, retrying.

And the box was locked up. Next time, I'll have CONFIG_MAGIC_SYSRQ=y.
Meanwhile, it is running the dbench 1 to 64 series under 2.4.19-rc3 with
no problems at all.


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