[Beowulf] [OOM killer/scheduler] disabling swap on cluster nodes?
hahn at mcmaster.ca
Tue Feb 10 11:02:47 PST 2015
> ?Do you know if remote swap is working well now? I remember it working not
> so good because it's a difficult problem, but I haven't tested it lately.?
I suspect remote swap works better now, in part because systems have
been moving more towards specialized allocators. (motivated by wanting
to scale-per-core, for instance.) it was always possible to make
network-swap robust: all it takes is enough partitioning of storage
pools, so that you don't run into an allocation-swap-allocation gotcha.
is net-swap really ever a good idea? it always seems like asking for
trouble, though in principle there's no reason why net IO should be
"worse" than disk IO...
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