Bart Smaalders wrote:
Joseph Mocker wrote:
Bart Smaalders wrote:
How much swap space is configured on this machine?
Zero. Is there any reason I would want to configure any swap space?
--joe
Well, if you want to allocate 500 MB in /tmp, and your machine
has no swap, you need 500M of physical memory or the write
_will_ fail.
W/ no swap configured, every allocation in every process of
any malloc'd memory, etc, is locked into RAM.
Yep. Understood. In the interest of performance we typically run w/o
swap. Is there a way to tune the system so that swap is used only when
RAM is full? We've run w/o swap for so long (since 2.7 or 2.8) we've not
kept up with any advances the swapping algorithms of the kernel.
I just swap on a zvol w/ my ZFS root machine.
Interesting. Doesn't ZFS have more overhead in this context than just a
traditional RAW partition? Well I suppose you have a better guarantee of
data accuracy though.
--joe
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