[jboss-dev] Small boottime improvement

[Jason T. Greene]

Jason T. Greene wrote:
> Rémy Maucherat wrote:
>> On Fri, Feb 26, 2010 at 1:55 PM, Rémy Maucherat
>> <remy.maucherat at gmail.com> wrote:
>> Results before/after VFS 3.
>>
>>> JBoss Web 2.1: 0.6s / 6.8MB
>>> minimal: 2.6s / 35MB
>>
>> minimal: 2.3s / 30.2MB
>>
>>> jbossweb-standalone (with the jbw release packaging): 3.9s / 65.5MB
>>
>> jbossweb-standalone (with the jbw release packaging): 3.8s / 56.4MB
>> (small gain here, so some of the benefit from VFS 3 probably comes
>> from better handling of the large amount of common JARs, which are
>> heavily trimmed in that packaging)
>>
>> On the plus side, in 2000, it took Tomcat 4 that amount of time to
>> start, and the memory use was relatively much bigger than this ;)
>>
>>> default: 9.5s / 161.5MB
>>
>> default: 8.95s / 144.5MB
>>
>>> all: 20s / 237MB
>>
>> all: 19.2s / 209.8MB
>>
>> So there's an improvement (and the next MC update will also bring
>> another improvement). 
> 
> I got similar numbers after starting each instance 5 times for the pre 
> and post vfs3 integration I saw an average 6.5% improvement. The memory 
> overhead was reduced by 18.8% (33MB) on my system.

This is post-full-gc.

> 
>> Very good job on the lack of huge regressions.

Remy said the above. Thunderbird loves to mangle replies.

> +100 John did a fantastic job on the integration effort. Thanks John!
> 


-- 
Jason T. Greene
JBoss, a division of Red Hat