ankitsinghal commented on issue #722: HBASE-23065 [hbtop] Top-N heavy hitter user and client drill downs URL: https://github.com/apache/hbase/pull/722#issuecomment-547723781 > Need to take this down locally and play with it too :) > > Probably not a bad idea to also run this through a quick perf test to make sure no regressions come in (same way as the dependent user metrics change) `./bin/ycsb run hbase20 -P workloads/workloada -s -threads 10 -p columnfamily=family` ycsb shows performance similar on single server cluster with and without patch. **without patch** [OVERALL], RunTime(ms), 52493 [OVERALL], Throughput(ops/sec), 19050.159068828223 [TOTAL_GCS_PS_Scavenge], Count, 73 [TOTAL_GC_TIME_PS_Scavenge], Time(ms), 123 [TOTAL_GC_TIME_%_PS_Scavenge], Time(%), 0.23431695654658716 [TOTAL_GCS_PS_MarkSweep], Count, 1 [TOTAL_GC_TIME_PS_MarkSweep], Time(ms), 32 [TOTAL_GC_TIME_%_PS_MarkSweep], Time(%), 0.06096050902025032 [TOTAL_GCs], Count, 74 [TOTAL_GC_TIME], Time(ms), 155 [TOTAL_GC_TIME_%], Time(%), 0.2952774655668375 [READ], Operations, 468618 [READ], AverageLatency(us), 518.8190018309156 [READ], MinLatency(us), 144 [READ], MaxLatency(us), 105983 [READ], 95thPercentileLatency(us), 815 [READ], 99thPercentileLatency(us), 1395 [READ], Return=OK, 468618 [READ], Return=NOT_FOUND, 31339 [CLEANUP], Operations, 20 [CLEANUP], AverageLatency(us), 122.7 [CLEANUP], MinLatency(us), 0 [CLEANUP], MaxLatency(us), 2081 [CLEANUP], 95thPercentileLatency(us), 263 [CLEANUP], 99thPercentileLatency(us), 2081 [UPDATE], Operations, 500043 [UPDATE], AverageLatency(us), 513.8964949014385 [UPDATE], MinLatency(us), 171 [UPDATE], MaxLatency(us), 118143 [UPDATE], 95thPercentileLatency(us), 780 [UPDATE], 99thPercentileLatency(us), 1448 [UPDATE], Return=OK, 500043 [READ-FAILED], Operations, 31339 [READ-FAILED], AverageLatency(us), 401.0351957624685 [READ-FAILED], MinLatency(us), 122 [READ-FAILED], MaxLatency(us), 22671 [READ-FAILED], 95thPercentileLatency(us), 633 [READ-FAILED], 99thPercentileLatency(us), 1195 **With Patch** [OVERALL], RunTime(ms), 51625 [OVERALL], Throughput(ops/sec), 19370.46004842615 [TOTAL_GCS_PS_Scavenge], Count, 77 [TOTAL_GC_TIME_PS_Scavenge], Time(ms), 133 [TOTAL_GC_TIME_%_PS_Scavenge], Time(%), 0.2576271186440678 [TOTAL_GCS_PS_MarkSweep], Count, 1 [TOTAL_GC_TIME_PS_MarkSweep], Time(ms), 25 [TOTAL_GC_TIME_%_PS_MarkSweep], Time(%), 0.048426150121065374 [TOTAL_GCs], Count, 78 [TOTAL_GC_TIME], Time(ms), 158 [TOTAL_GC_TIME_%], Time(%), 0.30605326876513317 [READ], Operations, 383745 [READ], AverageLatency(us), 492.0543016847125 [READ], MinLatency(us), 119 [READ], MaxLatency(us), 124479 [READ], 95thPercentileLatency(us), 752 [READ], 99thPercentileLatency(us), 1380 [READ], Return=OK, 383745 [READ], Return=NOT_FOUND, 116557 [CLEANUP], Operations, 20 [CLEANUP], AverageLatency(us), 122.8 [CLEANUP], MinLatency(us), 0 [CLEANUP], MaxLatency(us), 2019 [CLEANUP], 95thPercentileLatency(us), 309 [CLEANUP], 99thPercentileLatency(us), 2019 [READ-FAILED], Operations, 116557 [READ-FAILED], AverageLatency(us), 420.47432586631436 [READ-FAILED], MinLatency(us), 122 [READ-FAILED], MaxLatency(us), 89279 [READ-FAILED], 95thPercentileLatency(us), 654 [READ-FAILED], 99thPercentileLatency(us), 1274 [UPDATE], Operations, 499698 [UPDATE], AverageLatency(us), 535.2963730092977 [UPDATE], MinLatency(us), 173 [UPDATE], MaxLatency(us), 135935 [UPDATE], 95thPercentileLatency(us), 801 [UPDATE], 99thPercentileLatency(us), 1561 [UPDATE], Return=OK, 499698
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