Hi Peter, > I took a look at the AB and Rubis numbers. Honestly I don't > understand the rubis graphs.
You can find an explanation about the httperf numbers on the man page of Httperf, or looking at http://www.hpl.hp.com/personal/David_Mosberger/httperf.html. Rubis is the dynamic application used for the test. If you are interested on the Rubis benchmark we can send to you a war archive with the aplication and the file with the request distribution used to generate the workload. > From the AB results, it looks like the > connect, processing and wait times are lower for the hybrid. That's a > good achievement and congrats to you on that. > I'm not convinced of the benefit of the hybrid approach over APR. if > both are equal, then it might be good to have both as options. it's > nice to be able to support /. effect, but in reality that's achieved > by distributing servers across multiple hosting facilities. It's not > achieved through hosting a website on a single quad server supporting > 10K concurrent connections. I'm not a committer, so I don't have a say > in what goes into tomcat. thanks for researching NIO and taking time > to post these results. > It has been a pleasure to post this information, and to receive constructive and technically-reasoned answers like yours. Deciding which parameters define the performance of a server is a great and never-ending discussion topic. Anyway, feel free to send my any questions you may have about the benchmarking environment I've used for my experiments. By the way, this is my last post about this topic. I've perfectly understood Remy's messages (in the list and in my personal address), so I will not waste your time anymore. Sincerely, Vicenç > peter lin > > > On 5/25/05, Vicenc Beltran Querol <[EMAIL PROTECTED]> wrote: > > Hi, > > > > The results of the AB benchmark configured with 20 concurrent clients are > > posted below, > > If somebody is interested in more configurations (from 20 to 10000 > > concurrent clients) > > they are available at http://www.bsc.es/edragon/pdf/TestAb.tgz > > > > BTW, there is also available a comparison between Tomcat and the Hybrid > > (Tomcat+NIO) > > web servers at http://www.bsc.es/edragon/pdf/TestRubisDynamic.tgz. The > > comparison is > > based on the RUBiS benchmark and the httperf workload generator. > > > > > > Regards, > > > > -Vicenç > > > > > > ./ab -k -c 20 -n 2000000 http://pcbosch:8080/tomcat.gif > > > > Client: 2 way Xeon 2.4Ghz, 2GB RAM > > Server: 4 way Xeon 1.4Ghz, 2GB RAM > > Network: Gbit > > Java: build 1.5.0_03-b07 > > > > > > Tomcat 5.5.9 > > ------------------------------------------------------------- > > ------------------------------------------------------------- > > cument Path: /tomcat.gif > > Document Length: 1934 bytes > > > > Concurrency Level: 20 > > Time taken for tests: 122.460403 seconds > > Complete requests: 2000000 > > Failed requests: 0 > > Write errors: 0 > > Keep-Alive requests: 1980006 > > Total transferred: 32937062 bytes > > HTML transferred: -426963428 bytes > > Requests per second: 16331.81 [#/sec] (mean) > > Time per request: 1.225 [ms] (mean) > > Time per request: 0.061 [ms] (mean, across all concurrent requests) > > Transfer rate: 262.66 [Kbytes/sec] received > > > > Connection Times (ms) > > min mean[+/-sd] median max > > Connect: 0 0 0.0 0 14 > > Processing: 0 0 2.5 0 636 > > Waiting: 0 0 2.4 0 636 > > Total: 0 0 2.5 0 636 > > > > Percentage of the requests served within a certain time (ms) > > 50% 0 > > 66% 1 > > 75% 1 > > 80% 1 > > 90% 1 > > 95% 2 > > 98% 6 > > 99% 11 > > 100% 636 (longest request) > > ------------------------------------------------------------- > > ------------------------------------------------------------- > > > > > > > > > > Tomcat Hybrid 5.5.9 > > ------------------------------------------------------------- > > ------------------------------------------------------------- > > Document Path: /tomcat.gif > > Document Length: 1934 bytes > > > > Concurrency Level: 20 > > Time taken for tests: 282.264843 seconds > > Complete requests: 2000000 > > Failed requests: 0 > > Write errors: 0 > > Keep-Alive requests: 2000000 > > Total transferred: 33032704 bytes > > HTML transferred: -426967296 bytes > > Requests per second: 7085.54 [#/sec] (mean) > > Time per request: 2.823 [ms] (mean) > > Time per request: 0.141 [ms] (mean, across all concurrent requests) > > Transfer rate: 114.28 [Kbytes/sec] received > > > > Connection Times (ms) > > min mean[+/-sd] median max > > Connect: 0 0 0.0 0 1 > > Processing: 0 2 1.7 2 24 > > Waiting: 0 2 1.7 2 24 > > Total: 0 2 1.7 2 24 > > > > Percentage of the requests served within a certain time (ms) > > 50% 2 > > 66% 3 > > 75% 4 > > 80% 4 > > 90% 5 > > 95% 5 > > 98% 6 > > 99% 6 > > 100% 24 (longest request) > > ------------------------------------------------------------- > > ------------------------------------------------------------- > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
