Re: [Boost-users] [serialization] Solved: baffled by verylong archive loadtime

Subject: Re: [Boost-users] [serialization] Solved: baffled by verylong archive loadtime
From: Martin Weinberg (weinberg_at_[hidden])
Date: 2010-04-01 10:23:03

I tried for some time to generate a small working example but failed.
The class I added instantiates a number of nested STL vector
containers.  I tried all sorts of combinations, large and small.  My
timing tests for the tests showed (sigh) that the polymorphic archives
were always faster than the non-polymorphic case (binary and xml).

So, sorry to report, I'm not sure what is causing the behavior I
observe in my application.  Frustrating.  I'd like to understand this.

On Tue, Mar 30, 2010 at 10:41:57PM -0800, Robert Ramey wrote: 
> Martin Weinberg wrote:
> > Thanks to all for the suggestions.  I did end up using valgrind
> > --tool=callgrind and kcachegrind.  Compiling with -pg was
> > not feasible.
> >
> > Anyway, I found that all the time (80%) was spent in
> > reset_object_address().  Eliminating the polymorphic archives
> > decreased the load time by a factor of 1000!
> 
> I would be interested if you could make a small test case
> which demonstrates this.
> 
> Robert Ramey
> 
> 
> 
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-- 
Martin Weinberg                      Phone: [phone]
Dept. of Astronomy                   FAX:   [phone]
530 Graduate Research Tower	     weinberg_at_[hidden]
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