This is a reminder and agenda of the HotPlug SIG conference call tomorrow, Tuesday August 30, 2005 at 11:00am Pacific (2:00pm East Coast). Phone information: Toll-Free:1-800-211-0633 Toll:1-719-867-0485 Participant Code: 902493 This is a moderated line. Conference will not start until the moderator enters with a special pass code. Agenda: * Discussion on memory hotplug common regressions Mary had a couple of questions regarding memory migration: 1. Assume we trigger a memory migration for a segment in user space, and we have a (test) kernel module looking at the behavior. Is it possible that the memory segment does not migrate to physical memory while the originating segment goes away, i.e. the segment contents (or parts) are written to the swap space? Or is it possible that some pages get swapped out quickly so by the time the kernel module looks at the contents, they are not in physical memory? 2. And related to the above, could swapping behavior be an indication of a problem, assuming that we take care to have a small memory footprint capable of avoiding swap altogether? 3. Finally, assuming we write a test kernel module, how does it know what is target physical memory? Is the target memory a contiguous memory location, or can it be a bunch of randomly placed pages (possibly in swap, see above) adding up to a memory segment? * Behavior of statistics tools in VM environment. * Progress report on testing (CPU and memory) * Last meeting's ARs * Other topics Thanks for your participation. Martine J. Silbermann
