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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Fri, 21 May 2010 13:56:57 -0000
Message-ID: <20100521135657.27203.18962@eos.apache.org>
Subject: 
 =?utf-8?q?=5BHadoop_Wiki=5D_Update_of_=22BookKeeperPerfPage=22_by_FlavioJ?=
 =?utf-8?q?unqueira?=

Dear Wiki user,

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

The "BookKeeperPerfPage" page has been changed by FlavioJunqueira.
http://wiki.apache.org/hadoop/BookKeeperPerfPage?action=3Ddiff&rev1=3D10&re=
v2=3D11

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

  =

  The numbers we present in this page have been obtained in a cluster of ma=
chines with the following characteristics: one Xeon dual-core 2.1GHz proces=
sor, 4GB of RAM, gigabit ethernet, and two SATA hard drives. Each one of th=
e values below correspond to the average over 10 different runs, and in eac=
h run a client writes 400k times.
  =

- =3D=3D Single-client experiments =3D=3D
+ =3D=3D Single-client experiments (writes) =3D=3D
  =

  We run one client writing to an ensemble of bookies. We use ''x-y'' to th=
e 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 ||
  =

+ =3D=3D Single-client experiments (reads) =3D=3D
+ =

+ 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 ||
+=20