OK, I cleared out everything under /var/lib/ganglia/rrds/. Now I see the problem. In the short term I guess gmond/sflow.c could just submit zeros for the missing metrics instead of leaving them out altogether(?) However in the long term it would seem more elegant to fix this in the place where the RRD is constructed. After all, for most of these metrics posting a value of 0 is just plain wrong. When the value is really "dunno" or "not applicable" or "undefined" then leaving it out seems more correct.
Neil On Feb 10, 2011, at 5:21 PM, Bernard Li wrote: > Hi Neil: > > On Thu, Feb 10, 2011 at 5:05 PM, Neil McKee <neil.mc...@inmon.com> wrote: > >> That's odd, the CPU and MEM charts are working OK for me. It's just the >> load-avg that is missing (which causes the host to be marked "down"). > > You'll likely need to nuke your old rrd files to see the error. > > For Windows, mem_shared, mem_buffers and cpu_nice are missing, and > they are needed by the respective mem_ and cpu_ reports. I guess we > could fix to frontend code to only include them if they exist. Do > these metrics exist in Windows-land? > >> How frequently would we need to poll the Processor Queue Length to get a >> reasonable load-average estimate? If we could get away with only doing it >> every few seconds then it might be worthwhile (perhaps a random delay would >> be appropriate) but I suspect you might have to poll much faster than that >> to get something worthwhile? > > I will defer to Nick for answering that question :-) > > Cheers, > > Bernard ------------------------------------------------------------------------------ The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: Pinpoint memory and threading errors before they happen. Find and fix more than 250 security defects in the development cycle. Locate bottlenecks in serial and parallel code that limit performance. http://p.sf.net/sfu/intel-dev2devfeb _______________________________________________ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
