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From Tao Xie <xietao.mail...@gmail.com>
Subject ycsb test on hbase
Date Fri, 10 Sep 2010 02:32:35 GMT
hi, all
I use YCSB to measure the insert/read latency of hbase.
I found there will be 0 records inserted in up to 10 seconds during the
insertion procedure.
See the following result at 1514 second. I want to know why this occurs. Is
this due to compaction?
And I also want to know why the ops/sec varies all the time. Seems no a
stable time.
Thanks.

2010-09-10 00:07:29,608   1484 sec: 28786280 operations; 23475.3 current
ops/sec; [INSERT AverageLatency(ms)=8.81]
2010-09-10 00:07:39,610   1494 sec: 28842632 operations; 5634.07 current
ops/sec; [INSERT AverageLatency(ms)=6.68]
2010-09-10 00:07:49,612   1504 sec: 28964728 operations; 12207.16 current
ops/sec; [INSERT AverageLatency(ms)=7.68]
2010-09-10 00:07:59,614   1514 sec: 28964728 operations; 0 current ops/sec;
2010-09-10 00:08:10,778   1525 sec: 29130475 operations; 14846.56 current
ops/sec; [INSERT AverageLatency(ms)=24.45]
2010-09-10 00:08:20,782   1535 sec: 29606967 operations; 47630.15 current
ops/sec; [INSERT AverageLatency(ms)=12.64]
2010-09-10 00:08:30,784   1545 sec: 29908624 operations; 30159.67 current
ops/sec; [INSERT AverageLatency(ms)=0.12]
2010-09-10 00:08:40,786   1555 sec: 30016632 operations; 10798.64 current
ops/sec; [INSERT AverageLatency(ms)=5.66]

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