Re: Parse::RecDescent and need for speed


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Re: Parse::RecDescent and need for speed

by VSarkiss (Monsignor)

on Feb 15, 2005 at 22:48 UTC ( [id://431371]=note: print w/replies, xml )

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in reply to Parse::RecDescent and need for speed

If I was to use Parse::RecDescent, would it go faster?

Maybe.

(is Parse::RecDescent all in perl?)

Yes, but that may be irrelevant.

Before proceeding, you may want to try figuring out exactly where your file parsing script is spending its time. Packages like Devel::Timer and Devel::Profiler can help with that. The thing is that you may be surprised by the results -- the slow part may not be your parsing logic, but something else.

Do not rebuke them with harsh words ... but rather lead them gently - with URLs - so that they may learn wisdom.

Comment on Re: Parse::RecDescent and need for speed

Replies are listed 'Best First'.
Re^2: Parse::RecDescent and need for speed by EchoAngel (Pilgrim) on Feb 15, 2005 at 23:08 UTC
it's in the functions where I am processing comment statements	[reply]
Re^3: Parse::RecDescent and need for speed by EchoAngel (Pilgrim) on Feb 16, 2005 at 15:11 UTC
my script tries to preserve the whole file within a structure hash , including comments.	[reply]
Re^4: Parse::RecDescent and need for speed by fglock (Vicar) on Feb 16, 2005 at 15:22 UTC
Hve you checked the memory usage? Big hashes may eat up memory until you start using virtual memory - which is very slow.	[reply]

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