Nick Piggin wrote:
The answer is quite simple, people who are consolidating systems and
working with fewer, larger systems, want to mark processes, groups of
processes or entire containers into CPU scheduling classes, then
either fair balance between them, limit them or reserve them a
portion of the CPU - depending on the user and what their
requirements are. What is unclear about that?
It is unclear whether we should have hard limits, or just nice like
priority levels. Whether virtualisation (+/- containers) could be a
good solution, etc.
Look, that was actually answered in the paragraph you're responding to.
Once again, give me a set of possible requirements and I'll find you a
set of users that have them. I am finding this sub-thread quite redundant.
If you want to *completely* isolate N groups of users, surely you
have to use virtualisation, unless you are willing to isolate memory
management, pagecache, slab caches, network and disk IO, etc.
No, you have to use separate hardware. Try to claim otherwise and you're
glossing over the corner cases.
Sam.
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