Re: Re: Re: Speed of 5.8.0 versus 5.6.1

Around the time 5.8.0 came out there were threads on perl5-porters analyzing the performance of 5.8.0 relative to earlier releases. My foggy memory of the discussion features the "50%" figure prominently.

-sam

Comment on Re: Re: Re: Speed of 5.8.0 versus 5.6.1

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Re^4: Speed of 5.8.0 versus 5.6.1 by adrianh (Chancellor) on Jul 03, 2003 at 10:03 UTC
The only performance issues that I'm aware of in 5.8 are: The debugger can be a lot slower in 5.8. I think this has already been fixed in bleadperl. There is a new hashing algorithm which may give worse behaviour in some circumstances. In general however it should give better performance. The pervasive unicode support can slow things down (e.g. regexes on unicode are slower than regexes on ASCII) - but you can switch that off. There were, of course, a lot of performance enhancements in 5.8 too. So it comes down to what you do. Personally I've not noticed any performance difference.	[reply]

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Re^4: Speed of 5.8.0 versus 5.6.1
by adrianh (Chancellor) on Jul 03, 2003 at 10:03 UTC

The only performance issues that I'm aware of in 5.8 are:

The debugger can be a lot slower in 5.8. I think this has already been fixed in bleadperl.
There is a new hashing algorithm which may give worse behaviour in some circumstances. In general however it should give better performance.
The pervasive unicode support can slow things down (e.g. regexes on unicode are slower than regexes on ASCII) - but you can switch that off.

There were, of course, a lot of performance enhancements in 5.8 too.

So it comes down to what you do. Personally I've not noticed any performance difference.

[reply]