> On Apr 21, 2017, at 3:57 AM, Pavol Vaskovic via swift-dev > <swift-dev@swift.org> wrote: > > Hi swift-dev! > > I was working over the Easter holiday weekend on script that reports the > benchmark results comparison. I wasn’t always up-to-date with the master, but > I have noticed a mysterious change in MAX_RSS value reported from benchmarks. > The change went away again in later builds. > > For example the AngryPhonebook benchmark usually reports MAX_RSS of 10 543 > 104 - so around 10 MB. But my local builds from 2017-04-15 had all similar > tests drop to around 3 MB (AngryPhonebook reported 3 506 176). > > That seems like a significant and positive change, but later builds returned > to previous values. I have tried to look through the commits around that > time, but nothing there strikes me as obvious cause. > > Forgive my cluelessness, I lack proper visibility into the projects current > development, but is there some work going on in this area, that got merged > and reverted?
The value of MAX_RSS depends on OS behavior. Other activity on the same machine may change MAX_RSS of the benchmark. The changes you saw might not be "real". If you re-run the 2017-04-15 builds today, do you still see 3 MB instead of 10 MB? -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev