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https://issues.apache.org/jira/browse/HBASE-15161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15239215#comment-15239215
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Yu Li commented on HBASE-15161:
-------------------------------
[~enis] I tested with your {{CountersBenchmark}} and the default JMH options
for 1 and 16 threads, and the result looks a little bit different from yours:
* 1 thread
{noformat}
# JMH 1.12 (released 12 days ago)
# VM version: JDK 1.7.0_45, VM 24.45-b08
# VM invoker: /home/hadoop/hadoop_hbase/jdk1.7.0_45/jre/bin/java
# VM options: <none>
# Warmup: 20 iterations, 1 s each
# Measurement: 20 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 1 thread, will synchronize iterations
# Benchmark mode: Throughput, ops/time
{noformat}
||Benchmark||Mode||Cnt||Score||Error||Units||
|CountersBenchmark.testAddHistogramConstantValue|thrpt|200|8021489.491|±|28496.232
ops/s|
|CountersBenchmark.testAddHistogramRandomValue|thrpt|200|7264625.900|±|20687.454
ops/s|
|CountersBenchmark.testAddToBlockingQueue|thrpt|200|15193156.700|±|9852.702
ops/s|
|CountersBenchmark.testIncrementAtomicLong|thrpt|200|61286471.569|±|157590.540
ops/s|
|CountersBenchmark.testIncrementCounter|thrpt|200|40704390.815|±|92169.826
ops/s|
* 16 threads:
{noformat}
# JMH 1.12 (released 12 days ago)
# VM version: JDK 1.7.0_45, VM 24.45-b08
# VM invoker: /home/hadoop/hadoop_hbase/jdk1.7.0_45/jre/bin/java
# VM options: <none>
# Warmup: 20 iterations, 1 s each
# Measurement: 20 iterations, 1 s each
# Timeout: 10 min per iteration
# Threads: 16 threads, will synchronize iterations
# Benchmark mode: Throughput, ops/time
{noformat}
||Benchmark||Mode||Cnt||Score||Error||Units||
|CountersBenchmark.testAddHistogramConstantValue|thrpt|200|7943543.369|±|495590.594
ops/s|
|CountersBenchmark.testAddHistogramRandomValue|thrpt|200|5383866.653|±|96536.075
ops/s|
|CountersBenchmark.testAddToBlockingQueue|thrpt|200|6946474.250|±|44876.268
ops/s|
|CountersBenchmark.testIncrementAtomicLong|thrpt|200|12637791.647|±|107859.658
ops/s|
|CountersBenchmark.testIncrementCounter|thrpt|200|605886122.169|±|2663966.723
ops/s|
>From my result it seems MutableHistogram is much less expensive than
>BlockingQueue, and performs good on heavy load.
> Umbrella: Miscellaneous improvements from production usage
> ----------------------------------------------------------
>
> Key: HBASE-15161
> URL: https://issues.apache.org/jira/browse/HBASE-15161
> Project: HBase
> Issue Type: Umbrella
> Reporter: Yu Li
> Assignee: Yu Li
>
> We use HBase to (mainly) build index for our search engine in Alibaba.
> Recently we are upgrading our online cluster from 0.98.12 to 1.x and I'd like
> to take the opportunity to contribute a bunch of our private patches to
> community (better late than never, I hope :-)). This is an umbrella to track
> this effort.
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