[cgl_discussion] vm strict overcommit question
Fleischer, Julie N
julie.n.fleischer at intel.com
Mon Aug 11 15:59:50 PDT 2003
> From: Zheng, Jeff
> From CGL2.0 requirement, AVF6.1, vm strict overcommit, it
> defines two methods for control of virtual memory:
> + Heuristic overcommit
> + swapless strict overcommit
>
> The POC reference web site has patchs for both linux-2.4.18
> and linux-2.5.26. The patchs define following features:
> + Heuristic overcommit handling.
> + No overcommit handling.
> + Swapless strict overcommit
> + Strict overcommit
> + Paranoid overcommit
>
> But from linux-2.5.28 to newest 2.5 kernel, only three
> features survives:
> + Heuristic overcommit handling.
> + No overcommit handling.
> + Strict overcommit. It is configurable. By applying
> parameter to Strict overcommit, it can implement same
> functionality as Swapless strict overcommit and Paranoid overcommit.
>
> My question is: Does AVF6.1, vm strict overcommit, means
> "Configurable strict overcommit" + "Heuristic overcommit"?
Didn't seem like this has been answered yet (although I may have missed it after the F2F).... My read is that since the requirement is toggleable yes that both swapless strict overcommit and heuristic over-commit just need to be turned on by default, but it's okay if they are configured out later.
I'll add this data to the POC tracking sheet, though.
- Julie
**These views are not necessarily those of my employer.**
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