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The following page has been changed by stack: http://wiki.apache.org/hadoop/Hbase/PerformanceEvaluation The comment on the change is: Add anchor ------------------------------------------------------------------------------ * [#description Tool Description] * [#first_test First Evaluation of Region Server] -- June 8th, 2007 * [#second_test Second Evaluation of Region Server] -- September 16th, 2007 + * [#0_1_2 HBase Performance Evaluation Run] -- April 25th, 2008 [[Anchor(description)]] == Tool Description == @@ -138, +139 @@ Subsequently I profiled the mapfile PerformanceEvaluation. Turns out generation of the values and keys to insert were taking a bunch of CPU time. After making a fix key and value generations were between 15-25% (the alternative was precompiling keys and values which would take loads of memory). Rerunning tests, it looks like there can be a pretty broad range of fluctuation in mapfile numbers between runs. I also noticed that the 0.15.x random reads seem to be 50% faster than TRUNK. Investigate. + [[Anchor(0_1_2)]] == HBase 0.1.2 (Candidate) 04/25/2008 == Numbers for the 0.1.2 candidate. The 'mapfile', '20071219', and '!BigTable' columns are copied from the 'TRUNK 12/19/2007' above. The new columns are for 0.1.2 and for mapfile in 0.16.3 hadoop (This latter test uses new MapFilePerformanceTest script).
