This has happened to me at both places where I've used Ganglia, one
running 3.0.7 on RHEL 5 and the other running 3.1.0 on CentOS 4.
Occasionally, the graphs for a particular time range (like, say, day)
look blocky, as if there isn't enough resolution in the data.  It's as
if they were being taken from the RRAs for the next-higher time range,
but I'm not sure that's what is actually happening.

Usually, only one time range is affected at any given time, and graphs
for any other time range look good.  Usually, it just goes away after
a minute or a few minutes.  But then, perhaps another time range
starts looking blocky.

Anyone else get this?

Any ideas about why it is happening?

P.S. In case it had to do with trying to view data for a range of time
that's just barely longer than what's in the appropriate RRA because
maybe gmetad is a second or two behind in putting in the data, I tried
an experiment: I changed the $time_ranges array in conf.php, added a
-2 to the end of each time range to make it 2 seconds shorter than
what should be available in the RRA.  Then when that didn't make the
problem go away, I tried -1000.  But it still happened.
  -- Cos

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