On Wed, 24 Nov 2004, Herbert Poetzl wrote:
Then, if you are a fat jabba, maybe you might end up getting rescheduled instead of getting more memory whenever you want it!
thought about a simpler approach, with a TB for the actual page-ins, so that every page-in will consume a token, and you get a number per interval, as usual ...
There probably still needs to be a "target" size, which if exceeded, your bucket is refilled slower. This way small contexts would not be suffering because of a large and very active context. The sysadmins would need to make sure that the sum of all targets does not exceed physical RAM.
So you'd have two additional parameters - target size and fill-interval multiplier.
if (is_exceeded(target)) { interval *= multplier; }
Also - at which point does a malloc actually fail? It seems like context 0 should have a priority over other contexts - a non-0 context should under no circumstances be able to exhaust the system memory.
May be there should be an additional level in the bucket - "reschedule level". If I actually empty the bucket, the malloc fails?
my $0.02
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