Jason,
There is no documented way of limiting the memory consumption.
The ARC section of ZFS tries to adapt to the memory pressure of the system.
However, in your case probably it is not quick enough I guess.
One way of limiting the memory consumption would be limit the arc.c_max
This (arc.c_max) is set to 3/4 of the memory available (or 1GB less than
memory available).
This is done when the ZFS is loaded (arc_init()).
You should be able to change the value of arc.c_max through mdb and set
it to the value
you want. Exercise caution while setting it. Make sure you don't have
active zpools during this operation.
Thanks and regards,
Sanjeev.
Jason J. W. Williams wrote:
Hello,
Is there a way to set a max memory utilization for ZFS? We're trying
to debug an issue where the ZFS is sucking all the RAM out of the box,
and its crashing MySQL as a result we think. Will ZFS reduce its cache
size if it feels memory pressure? Any help is greatly appreciated.
Best Regards,
Jason
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