If you have a system with a fixed number of zones, you can distribute
the total amount of memory to the zones except what you want to
reserve. If you don't know how many zones you will have or on which
system your zone will be run, you can't easily manage how many memory
you will cap to your zone. Also, when you use memory cap, you have to
do it for each zone and it's a pretty workload when you have 800 zones
in production. It could be better to have, let say, a kernel parameter
to reserve memory. It's a reverse thinking. The zones won't be allowed
to go up to the memory cap but not beyond what it will be reserved for
the global zone. Thanks for the discussion we have, Pascal Jerry Jelinek a écrit : Pascal Fortin wrote: --
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