On 01/22/2011 01:27 AM, Insan Praja SW wrote:
Seems obvious that symux isn't detecting rollover properly for whatever variable you are seeing a graph "spike". It should be fairly easy for them to fix if you report it. The fact that it affects 64bit and not 32bit counters is a damn good clue.
symux reports measurements to rrdtool, and rrdtool tries to detect rollovers. Without looking at any source I would guess that the new pfctl -f zeros the queue stat counts, which would lead to rrdtool making a false overflow detection. This should affect both 32/64 bit archs. Also note that this would be hard to fix in symon/symux; pfctl is right to reset the stats, and rrdtools overflow handling is nice for when you have overflows. I don't see a simple way of second guessing either of them in the symon/symux source.
We already contacted the maintainer, still no reply though.
This is the first mail I received about this subject, or are were you talking about someone else? Cheers, Willem
