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Re: XML::SAX::PurePerl Performance

by Zaxo (Archbishop)
on Feb 05, 2002 at 16:39 UTC ( [id://143475]=note: print w/replies, xml ) Need Help??


in reply to XML::SAX::PurePerl Performance

For comparison, here are the pre-optimization figures for perl-5.6.1, XML::SAX::PurePerl-0.08 from CPAN:

$ perl -d:DProf t/16large.t 1..3 ok 1 ok 2 parsed 80085 bytes in 13 seconds ok 3 $ dprofpp -O 6 Total Elapsed Time = 11.05672 Seconds User+System Time = 10.67672 Seconds Exclusive Times %Time ExclSec CumulS #Calls sec/call Csec/c Name 36.9 3.940 3.892 115004 0.0000 0.0000 XML::SAX::PurePerl::Reade +r::match_nonext 14.8 1.590 1.547 86892 0.0000 0.0000 XML::SAX::PurePerl::Reade +r::Stream::next 10.8 1.160 8.197 114995 0.0000 0.0001 XML::SAX::PurePerl::Reade +r::match 9.55 1.020 7.152 115004 0.0000 0.0001 XML::SAX::PurePerl::Reade +r::match_nocheck 9.27 0.990 2.450 86891 0.0000 0.0000 XML::SAX::PurePerl::Reade +r::nextchar 9.05 0.966 8.389 17607 0.0001 0.0005 XML::SAX::PurePerl::Reade +r::consume

Same machine, same perl, cvs version of fifteen minutes ago:

$ perl -d:DProf t/16large.t 1..3 ok 1 ok 2 parsed 80085 bytes in 16 seconds ok 3 $ dprofpp -O 6 Total Elapsed Time = 13.08672 Seconds User+System Time = 11.91672 Seconds Exclusive Times %Time ExclSec CumulS #Calls sec/call Csec/c Name 37.5 4.480 4.442 115004 0.0000 0.0000 XML::SAX::PurePerl::Reade +r::match_nonext 13.2 1.580 1.537 86892 0.0000 0.0000 XML::SAX::PurePerl::Reade +r::Stream::next 10.6 1.270 9.037 114995 0.0000 0.0001 XML::SAX::PurePerl::Reade +r::match 10.2 1.220 7.882 115004 0.0000 0.0001 XML::SAX::PurePerl::Reade +r::match_nocheck 9.02 1.075 9.239 17607 0.0001 0.0005 XML::SAX::PurePerl::Reade +r::consume 8.48 1.010 2.460 86891 0.0000 0.0000 XML::SAX::PurePerl::Reade +r::nextchar
It looks like a pessimization for for this machine. Both build directories were on the same spindle and partition.

After Compline,
Zaxo

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