Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

Re^3: 5.10.0 regex slowdown

by demerphq (Chancellor)
on Feb 21, 2008 at 11:34 UTC ( #669243=note: print w/ replies, xml ) Need Help??


in reply to Re^2: 5.10.0 regex slowdown
in thread 5.10.0 regex slowdown

It would neat to see the re=debug dump of your pattern, piped into grep TRIE to see whats going on. I suspect that you can do it easiest with perl -c on code with a use re 'debug'.

perl -c -Mre=debug SCRIPT 2>&1 | grep TRIE

Should do it.

Actually if you could grep for JUMP and JMP too it would be good.

---
$world=~s/war/peace/g


Comment on Re^3: 5.10.0 regex slowdown
Download Code
Re^4: 5.10.0 regex slowdown
by BrowserUk (Pope) on Feb 21, 2008 at 12:21 UTC

    With -c -Mre=debug, I get no output other than 668954.p10 syntax OK, but as the regex is built at runtime, I wouldn't expect to?

    Running the code on the non-pathological case with use re 'debug'; I get 2 million lines of log of which 11,282 contain 'TRIE'; and the are no 'JUMP's or 'JMP's.

    The pathological case is running (and has already reached 10 million+ lines), but it looks like it is going to take quite a while. Can you /msg me your email and we can take this off line.


    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.
Re^4: 5.10.0 regex slowdown
by shmem (Canon) on Feb 21, 2008 at 13:00 UTC
    greetings demerphq,

    I've run both cases with -D512, see Re^3: 5.10.0 regex slowdown. Do you want more of that? ;-)

    --shmem

    _($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                                  /\_¯/(q    /
    ----------------------------  \__(m.====·.(_("always off the crowd"))."·
    ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://669243]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (9)
As of 2014-07-23 08:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite superfluous repetitious redundant duplicative phrase is:









    Results (137 votes), past polls