[jboss-dev-forums] [JBoss AS7 Development] - AS 7 startup time showdown

[Jason Greene]

Jason Greene [http://community.jboss.org/people/jason.greene] modified the document:

"AS 7 startup time showdown"

To view the document, visit: http://community.jboss.org/docs/DOC-16971

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How fast does AS 7 start on your computer? This page is a crowdsourced benchmark to see what type of times people are getting. It could also give you an idea if it's time to upgrade your computer to more cores.

When you start the server the first time, it starts slower than subsequent starts. We are interested in your best times  :) 

During the first startup, AS 7 builds caches and indexes and performs precompilations, "getting to know" your installation and libraries. The same optimizations are done on your deployments, so subsequent deployments are typically faster than the first.

On with the showdown! Feel free to edit this page and add your metrics. We ask that you not step on previous entries.

|| *Username* || *Processor / Chipset* || *RAM* || *HardDrive Speed* || *Operating System* || *JVM* || *Startup Time* ||
| dan.j.allen | Quad i7-2620M 2.70GHz 64-bit | 8G 1333MHz | 7200 RPM | Ubuntu 11.04 x86_64 2.6.38 | OpenJDK 1.6.0_22 | 1590ms |
| david bosschaert | Quad i7 2.2GHz 64-bit | 8G 1333MHz | 7200 RPM | Mac OS X 10.6.8 Darwin 10.8.0 x86_64 | Apple Java 1.6.0_26 | 1479ms |
| ssilvert |  Intel ® Core™ 2 Duo i7-620M -i7 
 (2.66GHz, 4MB L3, 1066MHz FSB, 35W) | 8GB 1333MHz | 7200 RPM | Windows 7 Enterprise SP1 | Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode) | 2169ms |
| tkimura | Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz | 8GB 1333MHz | 7200 RPM | Fedora 15
2.6.38.8-32.fc15.x86_64 | OpenJDK 1.6.0_22
fedora-58.1.10.2.fc15-x86_64 | 1450ms |
| jason.greene | i7 Dual Core @ 2.66 GHz | 8GB 1067MHZ | 7200 RPM | Mac OS X 10.6.8 (forced 64 bit kernel) | Apple Java 1.6.0_26 (-d32 bit mode) | 1486ms |
| jason.greene | i7 Dual Core @ 2.66 GHz | 8GB 1067MHZ | 7200 RPM | Mac OS X 10.6.8 (forced 64 bit kernel) | Apple Java 1.6.0_26 (stock settings) | 2041ms |

h3. Optimizations

You get better startup times with 32 bit over 64 bit, because of the smaller integer size. If you are on a 64 bit machine, you can do one of two things to get 32 bit performance:

* Run in 32 bit mode (Mac and Windows)
* Use the compression flag: -XX:+UseCompressedOops

Let the best machine win!
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