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From keith-turner <...@git.apache.org>
Subject [GitHub] accumulo pull request: ACCUMULO-1124 Shorten keys in index and use...
Date Tue, 24 May 2016 19:58:07 GMT
Github user keith-turner commented on the pull request:

    https://github.com/apache/accumulo/pull/100#issuecomment-221384261
  
    @joshelser  I ran some performance test and did not really see a difference.  Below I
compacted the file I have been testing with 3 times using the changes in this PR.
    
    ```
    2016-05-24 15:33:30,598 [tablet.Compactor] DEBUG: Compaction 2<< 24,299,468 read
| 24,299,468 written | 230,337 entries/sec | 105.495 secs |  688,581,526 bytes | 6527148.453
byte/sec
    2016-05-24 15:35:17,940 [tablet.Compactor] DEBUG: Compaction 2<< 24,299,468 read
| 24,299,468 written | 234,137 entries/sec | 103.783 secs |  688,581,526 bytes | 6634820.019
byte/sec
    2016-05-24 15:37:09,738 [tablet.Compactor] DEBUG: Compaction 2<< 24,299,468 read
| 24,299,468 written | 231,960 entries/sec | 104.757 secs |  688,581,526 bytes | 6573131.399
byte/sec
    ```
    
    Below I compacted the same file 3 times using 73b4fbb
    
    ```
    2016-05-24 15:46:19,371 [tablet.Compactor] DEBUG: Compaction 2<< 24,299,468 read
| 24,299,468 written | 233,054 entries/sec | 104.265 secs |  693,539,660 bytes | 6651701.530
byte/sec
    2016-05-24 15:48:07,653 [tablet.Compactor] DEBUG: Compaction 2<< 24,299,468 read
| 24,299,468 written | 235,752 entries/sec | 103.072 secs |  693,539,660 bytes | 6728691.206
byte/sec
    2016-05-24 15:49:59,176 [tablet.Compactor] DEBUG: Compaction 2<< 24,299,468 read
| 24,299,468 written | 233,536 entries/sec | 104.050 secs |  693,539,660 bytes | 6665446.036
byte/sec
    ```



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