Swapping on ZFS - stability issue

Kris Kennaway kris at FreeBSD.org
Sat Sep 8 18:51:29 PDT 2007

Peter Schuller wrote:
>> Try one of this (depends wheter you need encrypted swap or not):
>> 1. create zvol with 4k blocksize instead of default 8k:
>>      zfs create -b 4k -V 4g tank/swap
>>      swapon /dev/zvol/tank/swap
> Using a 4k blocksize did not seem to have an effect on the problem.
> The test I am doing is with top in one virtual console and the test
> program on another. I keep refreshing top seeing memory use climb,
> until it starts hitting swap. After a few seconds, top hangs and the
> only indications of life are ping and the console.

Please follow the directions in the developers handbook chapter on 
kernel debugging to obtain the relevant debugging information.


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