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https://issues.apache.org/jira/browse/HBASE-10788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Liu Shaohui updated HBASE-10788:
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Attachment: HBASE-10788-trunk-v2.diff
Add an report of min, avg, 95th, 99th, and 99.9th, max atency for each test.
Sample output
{code}
2014-03-20 13:59:27,924 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest latency log (ms), on 10240 measures
2014-03-20 13:59:27,924 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest Min = 0.0
2014-03-20 13:59:27,924 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest Avg = 0.11376953125
2014-03-20 13:59:27,924 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest StdDev = 4.195329193206241
2014-03-20 13:59:27,924 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest 50th = 0.0
2014-03-20 13:59:27,925 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest 95th = 0.0
2014-03-20 13:59:27,925 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest 99th = 0.7100000000000364
2014-03-20 13:59:27,925 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest 99.9th = 45.78200000000015
2014-03-20 13:59:27,925 INFO [TestClient-2] hbase.PerformanceEvaluation:
client-TestClient-2 RandomWriteTest Max = 289.0
{code}
[~ndimiduk][~lhofhansl] [~apurtell]
Please help to review this patch. Thx
> Add 99th percentile of latency in PE
> ------------------------------------
>
> Key: HBASE-10788
> URL: https://issues.apache.org/jira/browse/HBASE-10788
> Project: HBase
> Issue Type: Improvement
> Reporter: Liu Shaohui
> Assignee: Liu Shaohui
> Priority: Minor
> Attachments: HBASE-10788-trunk-v1.diff, HBASE-10788-trunk-v2.diff
>
>
> In production env, 99th percentile of latency is more important than the avg.
> The 99th percentile is helpful to measure the influence of GC, slow
> read/write of HDFS.
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