I upgraded from bb/bbgen to hobbitd and I am very pleased with the new
server. However, I had a few problems with the iostat graph definition
in hobbitgraph.cfg as included in the hobbit-4.0.4 distribution.
Here is the definition as distributed:
===== hobbitgraph.cfg fragment =====
[iostat]
TITLE I/O Utilization
YAXIS Stats
FNPATTERN iostat.(.*).rrd
DEF:p at RRDIDX@B=@RRDFN@:b:AVERAGE
DEF:p at RRDIDX@A=@RRDFN@:asvc_t:AVERAGE
DEF:p at RRDIDX@W=@RRDFN@:wsvc_t:AVERAGE
CDEF:p at RRDIDX@t=p at RRDIDX@B,5,GT,p at RRDIDX@B,UNKN,IF
(1) LINE2:p at RRDIDX@t#@COLOR:@RRDPARAM@
COMMENT:\n
(3) COMMENT:@RRDPARAM@\n
GPRINT:p at RRDIDX@B:LAST:B \: %5.1lf (cur)
(2) GPRINT:p at RRDIDX@B:MAX: \: %5.1lf (max)\n
GPRINT:p at RRDIDX@B:MIN: \: %5.1lf (min)
GPRINT:p at RRDIDX@B:AVERAGE: \: %5.1lf (avg)
GPRINT:p at RRDIDX@A:LAST:asvc_t \: %5.1lf (cur)
(2) GPRINT:p at RRDIDX@A:MAX: \: %5.1lf (max)\n
GPRINT:p at RRDIDX@A:MIN: \: %5.1lf (min)
GPRINT:p at RRDIDX@A:AVERAGE: \: %5.1lf (avg)
GPRINT:p at RRDIDX@W:LAST:wsvc_t \: %5.1lf (cur)
(2) GPRINT:p at RRDIDX@W:MAX: \: %5.1lf (max)\n
GPRINT:p at RRDIDX@W:MIN: \: %5.1lf (min)
GPRINT:p at RRDIDX@W:AVERAGE: \: %5.1lf (avg)
(4)
=====
I listed my problems in order of decreasing severity:
(1) There is a syntax error in the LINE2 definition for iostat: @COLOR
should be @COLOR@
(2) The legenda has linebreaks at the end of GPRINT lines for (max).
This means you get a legenda like this (simplified to save space):
B <B-cur> <B-max>\n
<B-min> <B-avg> asvc_t <A-cur> <A-max>\n
<A-min> <A-avg> wsvc_t <W-cur> <W-max>\n
<W-min> <W-avg>
By moving the linebreaks to the end of the GPRINT line for (avg) you
would get a better lay-out:
B <B-cur> <B-max> <B-min> <B-avg>\n
asvc_t <A-cur> <A-max> <A-min> <A-avg>\n
wsvc_t <W-cur> <W-max> <W-min> <W-avg>\n
(3) The line COMMENT:@RRDPARAM@\n is not really needed since it only
repeats the text already shown in the LINE2 line (unless you add more
graphs for the same filesystem).
(4) on the other hand, a COMMENT:\n as separator after the GPRINT lines
would improve the lay-out of the legenda
I attached a patch file that fixes these problems. It can be applied
against either the source copy in hobbit-4.0.4/hobbitd/etcfiles or the
active copy in ~hobbit/server/etc. I hope this helps someone,
Regards,
E. Furth
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