On 05/25/2010 06:01 PM, Anthony Liguori wrote:
On 05/25/2010 10:00 AM, Avi Kivity wrote:
The latter. Why is it less important? If you don't inherit the
memory, you can't access it.
You can also pass /dev/shm fd's via SCM_RIGHTs to establish shared
memory segments dynamically.
Doesn't work for anonymous memory.
What's wrong with /dev/shm memory?
The kernel treats anonymous and nonymous memory differently for swapping
(see /proc/sys/vm/swappiness); transparent hugepages won't work for
/dev/shm (though it may be argued that that's a problem with thp); setup
(/dev/shm defaults to half memory IIRC, we want mem+swap); different
cgroup handling; somewhat clunky (a minor concern to be sure).
Nothing is a killer, but we should prefer anonymous memory.
--
error compiling committee.c: too many arguments to function
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