Hi Thomas...
Den 19-08-2016 kl. 03:19 skrev Thomas Keffer:
Python itself is garbage collected, so it doesn't "leak" memory. Weewx
is also pretty careful about avoiding circular references, which can
slow down the GC process, leading to something that looks like an
erratic slow leak.
So, when memory use grows without bounds, the problem is usually in some
low-level library, probably written in C, that is misbehaving.
If your problems started when you switched from the default font to a
CentOS specific font, the problem is almost sure in some CentOS library
that deals with your new font.
No, the problem started, when I switched from Weewx 2.7.x to 3.0
The only reason I know it is font related, is because i created a
virtual PC with same OS and same byteweather theme with weewx in
simulator mode - just to see, if it was any of my mods. It didn't leak;
but I forgot fixing the font paths used in the theme (i uses debian
paths - on Centos, they are slightly different).
After I fixed the font paths, it was leaking, just as my real system.
There are a few Python tools to help you find a memory leak, but I have
not found any of them very easy to use.
Sorry, but this will take some careful sleuthing on your part. Try
experimenting with different font types --- it may help you figure out
which of the low-level libraries is the culprit.
First of all, I'm pretty new to linux, so that will not be easy :-)
Then again - this didn't happen in same config with WeeWx 2.7 , it
started the second I updated to V3.0
As mentioned earlier, I reproduced this in a VM , running same Centos 7
and same Weewx and Byteweather theme running simulator - where the only
thing I changed was the font path i byteweather theme.
If you are a master of debugging this,(:-)) I can easily give you access
to this VM (SSH/VNC or whatever), in case you do not want to setup such
an equal env.
Allan.
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