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Re: Tweaked config for Solaris/sparc == 30% perfomance boost

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From:
Alan Burlison
Date:
January 10, 2001 03:56
Subject:
Re: Tweaked config for Solaris/sparc == 30% perfomance boost
Message ID:
3A5C4E06.A2E47328@uk.sun.com
Tim Bunce wrote:

> > That is a 30% performance improvement, without changing a single line of
> > code.  This is the main reason I intend ditching siglongjmp when I
> > integrate 5.6.1 into Solaris.
> 
> But that 30% is a mix of the effects of -Ud_sigsetjmp and the effects
> of optimize='-xO4 -xdepend'.  How much does performance boost does each
> give by itself?

the setjmp change gives about 18%, the optimiser gives about 12%.  A bit
more can be squeezed out if you use the perl malloc, but it is broken
above 2Gb, so I don't use it.

Alan Burlison

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