site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On Oct 10, 2006, at 10:24 AM, Justin C. Walker wrote: On Oct 10, 2006, at 10:10 , Alison Cassidy wrote: -- Allie _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... Does anyone know if there is a programmatic way of switching VM on and off, similar to the way Linux does it? I've good reason to do this (honest!) and need some way to disable VM for the duration of running my app or at the least, ensure it doesn't flush to disk at the wrong moment. AFAIK, no OS that supports VM has such a feature. How would you deal, within your app, with this problem: you are running, you "turn off VM", the next instruction to be executed in your app lies at the start of a page that, oops, is paged out? Fair point. However, I'm assuming the kernel memory management will deal accordingly in some sane manner. See; http://unixhelp.ed.ac.uk/ CGI/man-cgi?swapoff+2 There may be more reasonable ways to solve your problem. Can you be more specific about what you are trying to do? I'm trying to quiet disk activity. If I could suspend the OS File Manager temporarily, I would do so :) Right now, I'm even running a separate pthread to sync() on a very regular basis to ensure that the kernel doesn't build up too many dirty blocks which it would otherwise flush in a flurry of disk activity. I'm doing some very strange things indeed! This email sent to site_archiver@lists.apple.com