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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Tue, 27 Oct 2009 21:50:54 -0000
Message-ID: <20091027215054.23430.29383@eos.apache.org>
Subject: 
 =?utf-8?q?=5BHadoop_Wiki=5D_Update_of_=22ZooKeeper/ServiceLatencyOverview?=
 =?utf-8?q?=22_by_PatrickHunt?=

Dear Wiki user,

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

The "ZooKeeper/ServiceLatencyOverview" page has been changed by PatrickHunt.
http://wiki.apache.org/hadoop/ZooKeeper/ServiceLatencyOverview?action=3Ddif=
f&rev1=3D13&rev2=3D14

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

  =

  =3D=3D=3D 1 Core - 1 Client =3D=3D=3D
  =

- 110k operations against the server with elapsed time of 18 seconds
+ 110k operations against the server with elapsed time of 22 seconds
  =

  {{{
  host40: created   10000 permanent znodes  in   3705 ms (0.370585 ms/op 26=
98.435645/sec)
@@ -278, +278 @@

  =

  =3D=3D=3D 1 Core - 10 Client =3D=3D=3D
  =

- 1.1 million operations against the server with elapsed time of 58 seconds
+ 1.1 million operations against the server with elapsed time of 52 seconds
  =

  {{{
  host43: created   10000 permanent znodes  in  15068 ms (1.506821 ms/op 66=
3.648755/sec)
@@ -296, +296 @@

  =

  =3D=3D=3D 1 Core - 20 Client =3D=3D=3D
  =

- 2.2 million operations against the server with elapsed time of 150 seconds
+ 2.2 million operations against the server with elapsed time of 93 seconds
  =

  {{{
  host47: created   10000 permanent znodes  in  23807 ms (2.380728 ms/op 42=
0.039583/sec)
@@ -332, +332 @@

  =

  =3D=3D=3D 2 Core - 10 Client =3D=3D=3D
  =

- 1.1 million operations against the server with elapsed time of 53 seconds
+ 1.1 million operations against the server with elapsed time of 35 seconds
  =

  {{{
  host49: created   10000 permanent znodes  in   7788 ms (0.778842 ms/op 12=
83.957982/sec)
@@ -350, +350 @@

  =

  =3D=3D=3D 2 Core - 20 Client =3D=3D=3D
  =

- 2.2 million operations against the server with elapsed time of 108 seconds
+ 2.2 million operations against the server with elapsed time of 65 seconds
  =

  {{{
  host53: created   10000 permanent znodes  in  14369 ms (1.436911 ms/op 69=
5.937229/sec)
@@ -371, +371 @@

  110k operations against the server with elapsed time of 20 seconds
  =

  {{{
+ host40: created   10000 permanent znodes  in   1589 ms (0.158944 ms/op 62=
91.516084/sec)
+ host40: set       10000           znodes  in   1572 ms (0.157295 ms/op 63=
57.472953/sec)
+ host40: get       10000           znodes  in   1713 ms (0.171362 ms/op 58=
35.606165/sec)
+ host40: deleted   10000 permanent znodes  in   1447 ms (0.144768 ms/op 69=
07.623247/sec)
+ host40: created   10000 ephemeral znodes  in   1609 ms (0.160907 ms/op 62=
14.762414/sec)
+ host40: watched   50000           znodes  in   9535 ms (0.190719 ms/op 52=
43.304577/sec)
+ host40: deleted   10000 ephemeral znodes  in   2254 ms (0.225470 ms/op 44=
35.170105/sec)
+ host40: notif     50000           watches in      0 ms (included in prior)
+ host40: Latency test complete
+ host40: 16.95user 8.53system 0:20.27elapsed 125%CPU (0avgtext+0avgdata 0m=
axresident)k
+ host40: 0inputs+0outputs (0major+73094minor)pagefaults 0swaps
  }}}
  =

  =3D=3D=3D 4 Core - 10 Client =3D=3D=3D
  =

- 1.1 million operations against the server with elapsed time of 43 seconds
+ 1.1 million operations against the server with elapsed time of 30 seconds
  =

  {{{
+ host49: created   10000 permanent znodes  in   5470 ms (0.547053 ms/op 18=
27.976119/sec)
+ host49: set       10000           znodes  in   4285 ms (0.428503 ms/op 23=
33.703802/sec)
+ host49: get       10000           znodes  in   1695 ms (0.169513 ms/op 58=
99.249693/sec)
+ host49: deleted   10000 permanent znodes  in   3801 ms (0.380188 ms/op 26=
30.275589/sec)
+ host49: created   10000 ephemeral znodes  in   2953 ms (0.295355 ms/op 33=
85.752729/sec)
+ host49: watched   50000           znodes  in   9185 ms (0.183702 ms/op 54=
43.598826/sec)
+ host49: deleted   10000 ephemeral znodes  in   2229 ms (0.222966 ms/op 44=
84.998745/sec)
+ host49: notif     50000           watches in      0 ms (included in prior)
+ host49: Latency test complete
+ host49: 16.55user 7.69system 0:30.31elapsed 79%CPU (0avgtext+0avgdata 0ma=
xresident)k
+ host49: 0inputs+0outputs (0major+69011minor)pagefaults 0swaps
  }}}
  =

  =3D=3D=3D 4 Core - 20 Client =3D=3D=3D
  =

- 2.2 million operations against the server with elapsed time of 95 seconds
+ 2.2 million operations against the server with elapsed time of 53 seconds
  =

  {{{
+ host47: created   10000 permanent znodes  in  10967 ms (1.096777 ms/op 91=
1.762226/sec)
+ host47: set       10000           znodes  in   7628 ms (0.762822 ms/op 13=
10.922660/sec)
+ host47: get       10000           znodes  in   4896 ms (0.489673 ms/op 20=
42.178396/sec)
+ host47: deleted   10000 permanent znodes  in   9035 ms (0.903586 ms/op 11=
06.701776/sec)
+ host47: created   10000 ephemeral znodes  in   4735 ms (0.473520 ms/op 21=
11.844099/sec)
+ host47: watched   50000           znodes  in  11316 ms (0.226338 ms/op 44=
18.168721/sec)
+ host47: deleted   10000 ephemeral znodes  in   4044 ms (0.404485 ms/op 24=
72.282121/sec)
+ host47: notif     50000           watches in      0 ms (included in prior)
+ host47: Latency test complete
+ host47: 16.13user 6.67system 0:53.31elapsed 42%CPU (0avgtext+0avgdata 0ma=
xresident)k
+ host47: 0inputs+0outputs (0major+69545minor)pagefaults 0swaps
  }}}
 =20