Re: Weird slowdown using complex functions in a loop

where are you storing the information that you are cleaning once it is cleaned? are you appending it to a variable in the script? On Wed, 2003-03-12 at 00:26, pgcd wrote: > Hi, > I'm trying to write a script to do some basic XML validation - nothing > fancy, basically I just close open tags and check the arguments. > The script runs fine, except that, when I use it in a loop (I need to > validate roughly 200.000 posts), it gets progressively slower - like, the > first ten calls to the function need around 0.01 seconds, next ten take > 0.03, then it's 0.1 and so on. > I've tried disabling parts of the code, I've tried profiling with dbg, I've > tried manually optimizing: nothing. I managed to reduce the slowdown a bit, > but it's still there, and very evident (as soon as I reach around a hundred > posts, a single function call takes as long as 10 seconds). > > It may be interesting to note that I had to recode it from scratch: I wrote > a class to do the same processing, and *that* ate memory like crazy, ending > up with nearly 2 GB of used memory (according to XP taskman). > > If anybody has come across a similar problem, I'd love to know what did they > do to solve it, but a suggestion on how to pinpoint the cause of the > slowdown would be great as well. > > Uh, yes: I'm using PHP 4.2.2 and Apache 1.3.24 on an XP machine (but I've > tried using PHP 4.3.0 and Apache 2, with the same results). > > pgcd > > >