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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "BookKeeperPerfPage" by FlavioJunqueira
Date Fri, 21 May 2010 13:56:57 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "BookKeeperPerfPage" page has been changed by FlavioJunqueira.
http://wiki.apache.org/hadoop/BookKeeperPerfPage?action=diff&rev1=10&rev2=11

--------------------------------------------------

  
  The numbers we present in this page have been obtained in a cluster of machines with the
following characteristics: one Xeon dual-core 2.1GHz processor, 4GB of RAM, gigabit ethernet,
and two SATA hard drives. Each one of the values below correspond to the average over 10 different
runs, and in each run a client writes 400k times.
  
- == Single-client experiments ==
+ == Single-client experiments (writes) ==
  
  We run one client writing to an ensemble of bookies. We use ''x-y'' to the denote the configuration
used, where ''x'' is the total number of bookies and ''y'' is the quorum size.
  
@@ -30, +30 @@

  || 4-3 || 128.97 Kops/s || 53.25 Kops/s ||
  || 6-3 || 146.72 Kops/s || 56.22 Kops/s ||
  
+ == Single-client experiments (reads) ==
+ 
+ We create a ledger, write 400k 128-byte entries, and read from the ledger.
+ 
+ || || 128 bytes per entry written || 1024 bytes written per entry ||
+ || 3-2 || 74.31 Kops/s || NA Kops/s ||
+ || 4-2 || 105.19 Kops/s || NA Kops/s ||
+ || 5-2 || 119.78 Kops/s || NA Kops/s ||
+ || 6-2 || 121.58 Kops/s || NA Kops/s ||
+ 

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