On Wed, Mar 08, 2017 at 08:17:39PM +0100, Vlastimil Babka wrote: > On 8.3.2017 17:46, Johannes Weiner wrote: > > Is there any other data you would like me to gather? > > If you can enable the extfrag tracepoint, it would be nice to have graphs of how > unmovable allocations falling back to movable pageblocks, etc. Okay, here we go. I recorded 24 hours worth of the extfrag tracepoint, filtered to fallbacks from unmovable requests to movable blocks. I've uploaded the plot here: http://cmpxchg.org/antifrag/fallbackrate.png but this already speaks for itself: 11G alloc-mtfallback.trace 3.3G alloc-mtfallback-patched.trace ;) > Possibly also /proc/pagetypeinfo for numbers of pageblock types. After a week of uptime, the patched (b) kernel has more movable blocks than vanilla 4.10-rc8 (a): Number of blocks type Unmovable Movable Reclaimable HighAtomic CMA Isolate a: Node 1, zone Normal 2017 29763 987 1 0 0 b: Node 1, zone Normal 1264 30850 653 1 0 0 I sampled this somewhat sporadically over the week and it's been reading reliably this way. The patched kernel also consistently beats vanilla in terms of peak job throughput. Overall very cool! -- 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>
