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RE: [PROGRAMMERING] Ineffektiv perlcode



> -----Original Message-----
> From: Thomas Rasmussen [mailto:sslug@sslug 
> Sent: 22. september 2005 19:07
> To: sslug@sslug
> Subject: Re: [PROGRAMMERING] Ineffektiv perlcode
> 
> 
> Peter Makholm wrote:
> 
> >Peter Maersk-Moller <sslug@sslug> writes:
> >
> >  
> >
> >>>Er det reelt et problem?
> >>>      
> >>>
> >>Ja, for 100 records tager det måske 10 sekunder at generere siden.
> >>For 200 records tager det måske 40 sekunder uden at det er præcist
> >>angivet. for 300 records tager det lang tid og for flere timer
> >>forbindelsen ud.
> >>    
> >>
> >
> >Har du sikret dig at det er strenghåndteringen der giver dig denne
> >slemme køretid?
> >
> >  
> >
> Den manglende hastighed kunne jo også skyldes din database struktur?
> Fx. kan manglende index godt være noget af en performance killer.
> Eller ineffektiv sql, hvis du trækker unødigt mange data med ud og 
> joiner tabeller på kryds og tværs.
> 

For lidt ram? check HD lys / top
Dårlige tabeller? udkomenter streng behandling
Dårlige strenge? erstat tabelopslag med en streng på samme størrelse som et opslag.


 
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