From: Wayne Davison (wayned@users.sourceforge.net)
Date: Sun Oct 15 2000 - 15:14:42 EDT
On Sun, 15 Oct 2000 rolf@pointsman.de wrote:
> Playing around I found one very strange behavior. Parsing speed slows
> (dramatically) down, if the chunks of data are big.
I noticed something similar, but I never tried to quantify it. I believe
that the problem is that the code likes to keep shifting the buffer as it
parses it. A while back I removed one such "SHRINK" call (only when the
data was being pushed), but I seem to recall that it didn't eliminate the
shifting. I decided to deal with this by just calling the push function
in a loop with a guaranteed small chunk size and then forgot to bring up
the subject.
Another problem with the code is that it copies all the data that you push
into an input buffer, and then translates all that data into another UTF8
buffer, so you can end up consuming another 2x the size of your push
buffer in memory.
I've thought that the push routine should be modified to only put a small
chunk of memory at a time into the input buffer, effectively moving my
buffer-dividing loop into the xml internals.
..wayne..
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