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The "ZooKeeper/ServiceLatencyOverview" page has been changed by PatrickHunt. http://wiki.apache.org/hadoop/ZooKeeper/ServiceLatencyOverview?action=diff&rev1=9&rev2=10 -------------------------------------------------- All systems had 16gig memory available, however unless specifically noted the JVM's -Xmx option was used to limit the size of the JVM heap to 512m. All systems had 7200RPM SATA drives. + + All systems are interconnected with 1gig ethernet, approximate ping time is steady at 0.09ms roundtrip. === Operating System === @@ -46, +48 @@ The client was run as follows unless otherwise noted: {{{ - zk-latencies.py --servers \"host60:2181\" --root_znode=/`hostname` --znode_size=100 --znode_count=10000 --timeout=5000 --watch_multiple=5 + zk-latencies.py --servers "host60:2181" --root_znode=/`hostname` --znode_size=100 --znode_count=10000 --timeout=5000 --watch_multiple=5 }}} This means each client: * has a 5 second timeout * creates 10k znodes of size 100 bytes * sets 5 watches on each of the znodes it creates, for 50k znodes by each client + + As a result, each client will send ~110,000 requests to the server during each test. == Results == @@ -121, +125 @@ === 2 Core - 1 Client === - 110k operations against the server with elapsed time of 18 seconds + 110k operations against the server with elapsed time of 20 seconds {{{ host40: Testing latencies on server host60:2181 using asynchronous calls @@ -140, +144 @@ === 2 Core - 10 Client === - 1.1 million operations against the server with elapsed time of 58 seconds + 1.1 million operations against the server with elapsed time of 53 seconds {{{ host49: Testing latencies on server host60:2181 using asynchronous calls @@ -159, +163 @@ === 2 Core - 20 Client === - 2.2 million operations against the server with elapsed time of 150 seconds + 2.2 million operations against the server with elapsed time of 108 seconds {{{ host46: Testing latencies on server host60:2181 using asynchronous calls @@ -178, +182 @@ === 4 Core - 1 Client === - 110k operations against the server with elapsed time of 18 seconds + 110k operations against the server with elapsed time of 20 seconds {{{ host40: Testing latencies on server host60:2181 using asynchronous calls @@ -197, +201 @@ === 4 Core - 10 Client === - 1.1 million operations against the server with elapsed time of 58 seconds + 1.1 million operations against the server with elapsed time of 43 seconds {{{ host43: Testing latencies on server host60:2181 using asynchronous calls @@ -216, +220 @@ === 4 Core - 20 Client === - 2.2 million operations against the server with elapsed time of 150 seconds + 2.2 million operations against the server with elapsed time of 95 seconds {{{ host65: Testing latencies on server host60:2181 using asynchronous calls
