I went further by JARring everything (classes+small JARs, except Scala JAR
and GAE Labs JAR). But i don't see big difference :(
>From ~18sec to ~15sec.
On Monday, 25 June 2012 08:00:47 UTC+8, Jeff Schnitzer wrote:
>
> Experiment #1: JARing my classes.
>
> Times are measured by shutting down instance, hitting a URL, looking
> at request time in logs. Repeat until bored.
>
> First, the "control". My app (sandbox appid), normally deployed
> (classes in WEB-INF/classes):
>
> 21118ms
> 23849ms
> 35995ms
> 20556ms
> 21620ms
> 23718ms
> 34446ms
> 42948ms
> 22487ms
> 32722ms
> 34511ms
> 31883ms
>
> Redeployed, same code but with classes JARed instead of in
> WEB-INF/classes:
>
> 19240ms
> 19386ms
> 19912ms
> 27517ms
> 20400ms
> 20483ms
> 20186ms
> 19517ms
> 20352ms
> 19528ms
> 20856ms
>
> What's interesting is that this change didn't improve the best-case
> load times by much, but it almost eliminated the crazy variance. This
> is a huge win.
>
> Conclusion: Use this ant script for deployment:
>
> <target name="deploy">
> <delete dir="${staging.dir}" />
> <mkdir dir="${staging.dir}" />
>
> <copy todir="${staging.dir}">
> <fileset dir="war">
> <exclude name="WEB-INF/classes/**" />
> <exclude
> name="WEB-INF/appengine-generated/**" />
> </fileset>
> </copy>
> <jar destfile="${staging.dir}/WEB-INF/lib/classes.jar"
> basedir="${classes.dir}" />
>
> <appcfg action="update" war="${staging.dir}" />
> </target>
>
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