Munroe Sollog wrote: >It looks like I'm running up against an RPN limitation. I'm trying to add >~1600 values, but the >rrdgraph function dies with: > >invalid rpn expression in: <spits out the first 4081 chars for the string> > >My full CDEF function is ~20379 chars long > >Is this a known bug? Any suggestions on how to work around it?
Three things come to mind ... 1) Can you split the expression into smaller chunks ? 2) How are you doing the add ? If you do a,b,c, ...,+,+,+ then that's going to need an awful lot of stack to execute. While a,b,+,c,+,... shouldn't. But I don't know how RRD processes the expression - logically it should just work left-right adding things to the stack or executing operators as it find them. 3) How are you passing the instructions ? Could you be hitting an OS limitation - eg shells often have a limit on the length of command+paramters that will fit in a buffer. I suspect it's not a specific limit in RRD, just a limit in <something in teh system>. I have graphs with 510 graph elements and 1020 legend items - so RRD can certainly handle large definitions. What I don't have is any particualrly large RPN expressions. _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
