On 03/09/2018 01:17 PM, Mike Galbraith wrote: > On Fri, 2018-03-09 at 12:45 -0500, Waiman Long wrote: >> On 03/09/2018 11:34 AM, Mike Galbraith wrote: >>> On Fri, 2018-03-09 at 10:35 -0500, Waiman Long wrote: >>>> Given the fact that thread mode had been merged into 4.14, it is now >>>> time to enable cpuset to be used in the default hierarchy (cgroup v2) >>>> as it is clearly threaded. >>>> >>>> The cpuset controller had experienced feature creep since its >>>> introduction more than a decade ago. Besides the core cpus and mems >>>> control files to limit cpus and memory nodes, there are a bunch of >>>> additional features that can be controlled from the userspace. Some of >>>> the features are of doubtful usefulness and may not be actively used. >>> One rather important features is the ability to dynamically partition a >>> box and isolate critical loads. How does one do that with v2? >>> >>> In v1, you create two or more exclusive sets, one for generic >>> housekeeping, and one or more for critical load(s), RT in my case, >>> turning off load balancing in the critical set(s) for obvious reasons. >> This patch just serves as a foundation for cpuset support in v2. I am >> not excluding the fact that more v1 features will be added in future >> patches. We want to start with a clean slate and add on it after careful >> consideration. There are some v1 cpuset features that are not used or >> rarely used. We certainly want to get rid of them, if possible. > If v2 is to ever supersede v1, as is the normal way of things, core > functionality really should be on the v2 boat when it sails. What you > left standing on the dock is critical core cpuset functionality. > > -Mike >From your perspective, what are core functionality that should be included in cpuset v2 other than the ability to restrict cpus and memory nodes. Cheers, Longman -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
