28914 - GenericFactory : can we bypass it to get space/time savings

Status: VERIFIED WONTFIX

(Core :: XPCOM, defect, P2)

Description

[Suresh Duddi (gone)]

Total starup time: 26 secs
Function                                  #calls       time+descendents (secs)
-------------------------------------------------------------------------------
CreateInstance()                           2000         14.59
 - GenericFactory::CreateInstance()        1596          4.34 (15% of startup)
 - dll loading                               50         11.29
 
consumes 14.59 secs out of 26 secs of startup

Yeah the numbers are slightly off. I think that is because of the deletion of a 
lot of nt dll function timings to eliminate noise. Roughly these are on the 
same order.

I think we can special case this and get rid of this all together. This would 
be a memory saving too as we wont be creating about 1600 factory objects

Comment 1

[Suresh Duddi (gone)]

This is bogus. Generic Factory's createinstance just calls into all the other 
object create functions. No way we can even get a microsecond of this.

Morphing bug to evaluation of generic factory since about 1500 of these are 
used. If we can refrain from creation of this object, we may get some space and 
time savings. Only some.

Comment 2

[Suresh Duddi (gone)]

This wont help. No point trying it.

Comment 3

[leger]

Marking Verified/Won't Fix.