On Fri, 23 Apr 2010, Andreas Höschler wrote:
Maybe I am lucky since I have run three VirtualBox instances at a time (2GB
allocation each) on my system with no problem at all.
I have inserted
set zfs:zfs_arc_max = 0x200000000
in /etc/system and rebooted the machine having 64GB of memory. Tomorrow will
show whether this did the trick!
This *could* help if your server runs a rather strange and
intermittent program which suddenly requests a huge amount of memory,
accesses all that memory, and then releases the memory. ZFS actually
gives memory back to the kernel when requested, but of course it needs
to determine which memory should be returned. It seems unlikely that
this would cause other applications to freeze unless there is a common
dependency. I do limit the size of the ARC on my system because I do
run programs which request a lot of memory and then quit.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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