On Tue, 11 Jun 2013, Alex Thorlton wrote: > This patch adds the ability to control THPs on a per cpuset basis. Please see > the additions to Documentation/cgroups/cpusets.txt for more information. > What's missing from both this changelog and the documentation you point to is why this change is needed. I can understand how you would want a subset of processes to not use thp when it is enabled. This is typically where MADV_NOHUGEPAGE is used with some type of malloc hook. I don't think we need to do this on a cpuset level, so unfortunately I think this needs to be reworked. Would it make sense to add a per-process tunable to always get MADV_NOHUGEPAGE behavior for all of its sbrk() and mmap() calls? Perhaps, but then you would need to justify why it can't be done with a malloc hook in userspace. This seems to just be working around a userspace issue or for a matter of convenience, right? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>