Daniel, I did a little measurement of Lift and did some tuning. On my Core 920 machine with 12GB of RAM running Ubuntu 9.04 and the JDK 1.6.0_13 in 64 bit mode with Tomcat 6.0.18 (I ran into some bugs in Jetty while measuring with ab). My baseline running (both locally and across the network)
ab -c 10 -n 20000 http://yak.local:8080/user_mgt/login I was seeing about 1,500 pages/second. I used YourKit to do some profiling and improved performance on my box to about 2,200 pages/second. Here are the steps I went through. I created a new project: d...@yak:~/benchmark$ mvn archetype:create -U -DarchetypeGroupId=net.liftweb -DarchetypeArtifactId=lift-archetype-basic -DarchetypeVersion=1.1-SNAPSHOT -DremoteRepositories= http://scala-tools.org/repo-snapshots -DgroupId=com.liftcode -DartifactId=benchmark I cd'ed into benchmark and typed "mvn clean install" I copied the "target/benchmark-1.0-SNAPSHOT" directory into Tomcat's webapps directory and renamed the directory "ROOT". I did export JAVA_OPTS="-Drun.mode=production" to make sure Lift runs in production mode. I started Tomcat with ./bin/startup.sh Then I ran: d...@yak:~/tmp$ ab -c 10 -n 20000 http://localhost:8080/user_mgt/login I did this and discarded the results because this will "warm up" the HotSpot compiler. At the end of this run, the JVM should have optimized most of the Lift-related classes. Next, I re-ran the command: d...@yak:~/tmp$ ab -c 10 -n 20000 http://localhost:8080/user_mgt/login This is ApacheBench, Version 2.3 <$Revision: 655654 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient) Completed 2000 requests Completed 4000 requests Completed 6000 requests Completed 8000 requests Completed 10000 requests Completed 12000 requests Completed 14000 requests Completed 16000 requests Completed 18000 requests Completed 20000 requests Finished 20000 requests Server Software: Apache-Coyote/1.1 Server Hostname: localhost Server Port: 8080 Document Path: /user_mgt/login Document Length: 3768 bytes Concurrency Level: 10 Time taken for tests: 9.156 seconds Complete requests: 20000 Failed requests: 0 Write errors: 0 Total transferred: 83620000 bytes HTML transferred: 75360000 bytes Requests per second: 2184.33 [#/sec] (mean) Time per request: 4.578 [ms] (mean) Time per request: 0.458 [ms] (mean, across all concurrent requests) Transfer rate: 8918.62 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 1 0.9 0 8 Processing: 1 4 18.5 3 788 Waiting: 0 4 18.4 2 788 Total: 1 5 18.5 3 788 WARNING: The median and mean for the initial connection time are not within a normal deviation These results are probably not that reliable. Percentage of the requests served within a certain time (ms) 50% 3 66% 4 75% 4 80% 5 90% 6 95% 8 98% 11 99% 16 100% 788 (longest request) d...@yak:~/tmp$ I also ran the command remotely over a gigabit LAN: d...@horse:~$ ab -c 10 -n 20000 http://yak.local:8080/user_mgt/login This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0 Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/ Copyright 2006 The Apache Software Foundation, http://www.apache.org/ Benchmarking yak.local (be patient) Completed 2000 requests Completed 4000 requests Completed 6000 requests Completed 8000 requests Completed 10000 requests Completed 12000 requests Completed 14000 requests Completed 16000 requests Completed 18000 requests Finished 20000 requests Server Software: Apache-Coyote/1.1 Server Hostname: yak.local Server Port: 8080 Document Path: /user_mgt/login Document Length: 3768 bytes Concurrency Level: 10 Time taken for tests: 10.305721 seconds Complete requests: 20000 Failed requests: 0 Write errors: 0 Total transferred: 83620000 bytes HTML transferred: 75360000 bytes Requests per second: 1940.67 [#/sec] (mean) Time per request: 5.153 [ms] (mean) Time per request: 0.515 [ms] (mean, across all concurrent requests) Transfer rate: 7923.75 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.6 0 4 Processing: 1 4 25.9 3 840 Waiting: 1 3 25.6 2 816 Total: 1 4 25.9 3 840 Percentage of the requests served within a certain time (ms) 50% 3 66% 4 75% 4 80% 4 90% 6 95% 8 98% 11 99% 17 100% 840 (longest request) I'm currently setting up a test machine with a 2 core AMD processor, 1GB of RAM and Ubuntu. I'll re-run the tests on this box and let you know. Thanks, David On Sat, May 2, 2009 at 1:32 PM, Dunsun <dun...@gmail.com> wrote: > > Hi, > > I'm very new to lift and scala. > > I have made some Grails intranet applications but sadly Grails or > better say GSP rendering part which is completely written in Groovy is > a very slow beast (even in comparison with Rails or Django). > > For my future big project (heavy loaded site) I need something much > faster. > > So I have made some quick and dirty Lift benchmarks using ApacheBench > + Tomcat, GlassFish (from netbeans) and even Jetty. > My machine - AMD X2 @ 2500Mhz, 4 GB RAM > > LIFT BASIC SAMPLE: > ab -c 10 -n 3000 > http://localhost:8080/liftbasic-1.0-SNAPSHOT/user_mgt/login > 50 req/s > > LIFT BLANK SAMPLE: > ab -c 10 -n 3000 http://localhost:8080/liftblank-1.0/ > 120 req/s > > Obtained numbers were similar for all 3 servers. > > Using Stripes and rendering similar simple pages I'm getting much much > higher scores (600 req/s). > Using Grails I'm getting little worse results but I would say it is > same league. > I would expect much better performance from Lift which is written in > scala. > > Why am I getting these low numbers ? > Am I doing something wrong ? > Any suggestion is very welcome. > > regards > Daniel > > > > -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. 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