Andres Salomon wrote: > On Mon, 24 Sep 2007 16:51:07 -0400 > Bernardo Innocenti <[EMAIL PROTECTED]> wrote: > >> Cool! Andrew picked up the patch I liked. >> >> Andres, how about adding it to olpc-2.6 too? Along with the >> latest Memphis patch, it would give use us invaluable stats >> for those trying to reduce memory usage. >> > > Is it useful for the sugar folks' memory donut? I'm certainly not opposed > to including the patch (though I'd want to look over the lkml thread before > committing), if people find it useful.
"PSS" is basically the same measure we're currently calculating (a little more accurate in some ways, a little less in others). Having the kernel calculate PSS would let us draw the ring faster (which would be good), but wouldn't affect the accuracy. The biggest problem the ring has right now is that it doesn't take into account the fact that code pages can be swapped back out to disk to create more RAM, and so it needs to count inactive pages differently from active pages if we want the free-space wedge in the donut to be an accurate estimation of the user's ability to launch another activity. AFAIK the PSS kernel patch doesn't help with this. -- Dan _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
