[rrd-users] Error from rrdtool: 'libpng error: stream error'

Daniellek daniel at fenert.net
Tue May 20 16:55:19 MEST 2003

I wrote here in the begining of April about my problem.

Problem: While viewing rrdtool generated graphs, from time
to time (usually at least once a day), rrdtool starts 
printing endlessly 'libpng error: stream error'.

I use Cacti for generating graphs, and rrdtool is run from
php, so all such logs go to apache and are directed to 

After the logfile is 2GB full of such messages it stops
writing (2GB file limit), load drops to normal level (0.1-0.4)
and everything from now is working perfectly.
I could live with 2GB file, but when it's full and i need to restart
apache it refuses to start (I need to delete the file, and then start

I've tried till now:
1) Recompiling apache+php
2) Recompiling libgd (but as far as I can see rrdtool uses it's 
   own version of GD library...)
3) Using different versions of rrdtool (now using 1.0.42).

Starting of error_log flood looks like this:
libpng error: Write Error
libpng error: stream error
libpng error: stream error
libpng error: stream error

Any suggestions?

Daniel Fenert                       --==> daniel at fenert.net <==--
====-P o w e r e d--b y--S l a c k w a r e-===-ICQ #37739641-====
==========- http://daniel.fenert.net/ -==========< +48604628083 >

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