F14 kernel process loop, possibly in ext4 filesystem code

[Michał Piotrowski]

CC'ing kernel list

Regards,
Michal

2010/10/4 Anne & Lynn Wheeler <lynn at garlic.com>:
> EXT4 filesystem directory with 100,000+ small files, 4-core intel
> processor, batch process that runs parallel on all four processors
> ... adding/deleting several hundred files.

Let me guess - fsfuzzer? :)

>
> No problem on F13 but fairly consistently happens since recent
> "preupgrade" to F14. If I serialize the processing, problem
> doesn't occur.
>
> Initial symptom is that batch process doesn't complete and gkrellm
> shows one of the processors at 100% cpu in the kernel. Eventually
> whole system locks up and requires reboot (with manual reset switch).
> Directory will then frequently show numerous newly added files
> as zero bytes (i.e. metadata had been logged, but actual data
> never written to disk).
>
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