[forge-dev] Improving the performance of weld for micro-deployments.

[Lincoln Baxter, III]

What kind of information do you need? I was unable to get YourKit to dump a
.snapshot file for some reason. If that's what you need, I can try again.
Which profile mode? This was done using tracing.

Thanks!


On Tue, Jan 29, 2013 at 4:32 PM, Stuart Douglas
<stuart.w.douglas at gmail.com>wrote:

> The screenshot does not really tell us much. We would need to see the
> actual profile information.
>
> Stuart
>
>
> Lincoln Baxter, III wrote:
>
>> Hi Jozef, Stuart, and Weld-devs,
>>
>> In Forge 2 we are using Weld extensively, and one of the things we do is
>> start up many instances simultaneously.
>>
>> We may have anywhere from one to one-hundred or more weld instances.
>> Currently we have only seen around 10-12 instances, and performance is
>> "Okay", but in theory, we could see hundreds of instances, at which
>> point, performance starts to be a concern. We're working around this
>> problem by disabling CDI support on some internal addons, but... it's
>> not really reasonable to expect that everyone will do this.
>>
>> Which means... we need to figure out how to shave as much time off the
>> bootstrap as possible. Currently each weld instance takes anywhere from
>> 80ms to 450ms to start (not really sure why such variation yet,) and
>> we'd hopefully like to get that down even lower, around 10-20ms.
>> Classloading time only would be optimal, but obviously difficult to
>> achieve.
>>
>>
>> How can we get the most speed out of Weld? Most of our deployments have
>> only ~15 bean classes at most. It seems like a lot of time (~30-40%) is
>> being spent in the Google concurrent collections.
>>
>> (Screenshot attached.)
>>
>> Thanks,
>>
>> --
>> Lincoln Baxter, III
>> http://ocpsoft.org
>> "Simpler is better."
>>
>


-- 
Lincoln Baxter, III
http://ocpsoft.org
"Simpler is better."
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