* Bharata B Rao (bharata@xxxxxxxxxxxxxxxxxx) wrote: > On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote: > > * Bharata B Rao (bharata@xxxxxxxxxxxxxxxxxx) wrote: > > > In fact I had successfully done postcopy migration of sPAPR guest with > > > this setup. > > > > Interesting - I'd not got that far myself on power; I was hitting a problem > > loading htab ( htab_load() bad index 2113929216 (14848+0 entries) in htab stream (htab_shift=25) ) > > > > Did you have to make any changes to the qemu code to get that happy? > > I should have mentioned that I tried only QEMU driven migration within > the same host using wp3-postcopy branch of your tree. I don't see the > above issue. > > (qemu) info migrate > capabilities: xbzrle: off rdma-pin-all: off auto-converge: off zero-blocks: off compress: off x-postcopy-ram: on > Migration status: completed > total time: 39432 milliseconds > downtime: 162 milliseconds > setup: 14 milliseconds > transferred ram: 1297209 kbytes > throughput: 270.72 mbps > remaining ram: 0 kbytes > total ram: 4194560 kbytes > duplicate: 734015 pages > skipped: 0 pages > normal: 318469 pages > normal bytes: 1273876 kbytes > dirty sync count: 4 > > I will try migration between different hosts soon and check. I hit that on the same host; are you sure you've switched into postcopy mode; i.e. issued a migrate_start_postcopy before the end of migration? (My current world I have working on x86-64 and I've also tested reasonably well on aarch64, and get to that htab problem on Power). Dave > > Regards, > Bharata. > -- Dr. David Alan Gilbert / dgilbert@xxxxxxxxxx / Manchester, UK -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>