On Wed, 24 Feb 2010 15:28:44 -0500 Rik van Riel <riel@xxxxxxxxxx> wrote: > > Generally it seems like a bad idea to do this sort of thing > > asynchronously. Because it reduces repeatability across runs and > > across machines - system behaviour becomes more dependent on the size > > of the machine and the amount of activity in unrelated jobs? > > Isn't system performance already dependent on the size of > the machine and the amount of activity in unrelated jobs? I said "repeatability". > Using hugepages is a performance enhancement only and > otherwise transparent to userspace. And it's bad that a job run will take a varying amount of CPU time due to unrelated activity. Yes, that can already happen, but it's undesirable and it's undesirable to worsen things. If this work could be done synchronously then runtimes become more consistent, which is a good thing. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>