On Mon, 24 Dec 2007 04:29:36 +0530 Balbir Singh <[EMAIL PROTECTED]> wrote: > Rik van Riel wrote:
> > In the real world, users with large JVMs on their servers, which > > sometimes go a little into swap, can trigger this system. All of > > the CPUs end up scanning the active list, and all pages have the > > referenced bit set. Even if the system eventually recovers, it > > might as well have been dead. > > > > Going into swap a little should only take a little bit of time. > > Very fascinating, so we need to scale better with larger memory. > I suspect part of the answer will lie with using large/huge pages. Linus vetoed going to a larger soft page size, with good reason. Just look at how much the 64kB page size on PPC64 sucks for most workloads - it works for PPC64 because people buy PPC64 monster systems for the kinds of monster workloads that work well with a large page size, but it definately isn't general purpose. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
