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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "ZooKeeper/ServiceLatencyOverview" by PatrickHunt
Date Tue, 27 Oct 2009 05:58:23 GMT
Dear Wiki user,

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

The "ZooKeeper/ServiceLatencyOverview" page has been changed by PatrickHunt.
http://wiki.apache.org/hadoop/ZooKeeper/ServiceLatencyOverview?action=diff&rev1=7&rev2=8

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

  
  === 2 Core - 1 Client ===
  
+ 110k operations against the server with elapsed time of 18 seconds
+ 
+ {{{
+ host40: Testing latencies on server host60:2181 using asynchronous calls
+ host40: created   10000 permanent znodes  in   2420 ms (0.242055 ms/op 4131.292291/sec)
+ host40: set       10000           znodes  in   1613 ms (0.161318 ms/op 6198.940227/sec)
+ host40: get       10000           znodes  in   1694 ms (0.169480 ms/op 5900.384144/sec)
+ host40: deleted   10000 permanent znodes  in   1440 ms (0.144013 ms/op 6943.822193/sec)
+ host40: created   10000 ephemeral znodes  in   1589 ms (0.158944 ms/op 6291.516084/sec)
+ host40: watched   50000           znodes  in   9442 ms (0.188850 ms/op 5295.203361/sec)
+ host40: deleted   10000 ephemeral znodes  in   2272 ms (0.227226 ms/op 4400.912310/sec)
+ host40: notif     50000           watches in      0 ms (included in prior)
+ host40: Latency test complete
+ host40: 16.97user 8.17system 0:20.96elapsed 119%CPU (0avgtext+0avgdata 0maxresident)k
+ host40: 0inputs+0outputs (2major+73972minor)pagefaults 0swaps
+ }}}
+ 
+ === 1 Core - 10 Client ===
+ 
+ 1.1 million operations against the server with elapsed time of 58 seconds
+ 
+ {{{
+ host49: Testing latencies on server host60:2181 using asynchronous calls
+ host49: created   10000 permanent znodes  in   5316 ms (0.531661 ms/op 1880.897081/sec)
+ host49: set       10000           znodes  in   4549 ms (0.454980 ms/op 2197.897811/sec)
+ host49: get       10000           znodes  in   3273 ms (0.327330 ms/op 3055.021880/sec)
+ host49: deleted   10000 permanent znodes  in   9378 ms (0.937850 ms/op 1066.268703/sec)
+ host49: created   10000 ephemeral znodes  in   5195 ms (0.519526 ms/op 1924.832170/sec)
+ host49: watched   50000           znodes  in  17633 ms (0.352667 ms/op 2835.533635/sec)
+ host49: deleted   10000 ephemeral znodes  in   7606 ms (0.760661 ms/op 1314.646067/sec)
+ host49: notif     50000           watches in      0 ms (included in prior)
+ host49: Latency test complete
+ host49: 16.26user 6.74system 0:53.65elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k
+ host49: 0inputs+0outputs (2major+71633minor)pagefaults 0swaps
+ }}}
+ 
+ === 1 Core - 20 Client ===
+ 
+ 2.2 million operations against the server with elapsed time of 150 seconds
+ 
+ {{{
+ host46: Testing latencies on server host60:2181 using asynchronous calls
+ host46: created   10000 permanent znodes  in  10765 ms (1.076519 ms/op 928.920312/sec)
+ host46: set       10000           znodes  in  13262 ms (1.326232 ms/op 754.015764/sec)
+ host46: get       10000           znodes  in  17171 ms (1.717179 ms/op 582.350402/sec)
+ host46: deleted   10000 permanent znodes  in  10307 ms (1.030792 ms/op 970.127826/sec)
+ host46: created   10000 ephemeral znodes  in   9636 ms (0.963677 ms/op 1037.692397/sec)
+ host46: watched   50000           znodes  in  31042 ms (0.620850 ms/op 1610.695533/sec)
+ host46: deleted   10000 ephemeral znodes  in  13254 ms (1.325475 ms/op 754.446396/sec)
+ host46: notif     50000           watches in      0 ms (included in prior)
+ host46: Latency test complete
+ host46: 18.18user 6.09system 1:48.16elapsed 22%CPU (0avgtext+0avgdata 0maxresident)k
+ host46: 0inputs+0outputs (0major+73188minor)pagefaults 0swaps
+ }}}
+ 

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