On Thu, Nov 23, 2017 at 7:35 AM, Eshcar Hillel <esh...@oath.com.invalid> wrote:
> Happy Thanksgiving all, > And to you Eshcar. > In recent benchmarks I ran in HBASE-18294 I discovered major performance > degradation of master code w.r.t 2-alpha-1 code.I am running write-only > workload (similar to the one reported in HBASE-16417). I am using the same > hardware and same configuration settings (specifically, I testes both basic > memstore compaction with optimal parameters, and no memsore > compaction).While in 2-alpha-1 code I see throughput of ~110Kops for basic > compaction and ~80Kops for no compaction, in the master code I get only > 60Kops and 55Kops, respectively. *This is almost 50% reduction in > performance*. > (1) Did anyone else noticed such degradation?(2) Do we have any systematic > automatic/semi-automatic method to track the sources of this performance > issue? > Thanks,Eshcar > On #1, no. I've not done perf compare. I wonder if later alpha versions include the regression (I'll have to check and see). On #2, again no. I intend to do a bit of perf tuning and compare before release. If you don't file an issue, I will do so later for myself as a task to compare at least to alpha-1. Thanks Eshcar, St.Ack
