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

[David Bosschaert]

David Bosschaert [http://community.jboss.org/people/bosschaert] 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 |

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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