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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We are having issues with rrd leaving 5-10 minute intervals
of no data for items such as cpu load on various systems. Most of the time it
happens three times in a row like at 2, 3 and 4 pm. I am not finding anything
is the logs on either the client or server. Some googling indicated that the
issue may go away by using the no-cache option for RRD. I have added it to the hobbitlaunch.cfg
as such:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>hobbitlaunch.cfg: CMD
hobbitd_channel --channel=status --log=$BBSERVERLOGS/rrd-status.log hobbitd_rrd
--no-cache --extra-tests=cpucisco,ifaload,ifload,vload,wphlstat,wperrors
--extra-script=/home/xymon/server/ext/extra-rrd.pl --rrddir=$BBVAR/rrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>hobbitlaunch.cfg: CMD
hobbitd_channel --channel=data --log=$BBSERVERLOGS/rrd-data.log
hobbitd_rrd --no-cache --extra-tests=mpstat,zonestat
--extra-script=/home/xymon/server/ext/rrd_data.pl --rrddir=$BBVAR/rrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>This is on a 32 bit red hat system and when I do a ps –ef
| grep rrd I show the following:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>xymon 7635 7599 0 14:26
? 00:00:01 hobbitd_channel
--channel=status --log=/home/xymon/logs/rrd-status.log hobbitd_rrd --no-cache
--extra-tests=cpucisco,ifaload,ifload,vload,wphlstat,wperrors
--extra-script=/home/xymon/server/ext/extra-rrd.pl --rrddir=/home/xymon/data/rrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>xymon 7636 7599 0 14:26
? 00:00:00 hobbitd_channel
--channel=data --log=/home/xymon/logs/rrd-data.log hobbitd_rrd --no-cache
--extra-tests=mpstat,zonestat --extra-script=/home/xymon/server/ext/rrd_data.pl
--rrddir=/home/xymon/data/rrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>xymon 7672 7635 0 14:26
? 00:00:07 hobbitd_rrd --no-cache
--extra-tests=cpucisco,ifaload,ifload,vload,wphlstat,wperrors
--extra-script=/home/xymon/server/ext/extra-rrd.pl --rrddir=/home/xymon/data/rrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>xymon 7681 7636 0 14:26
? 00:00:03 hobbitd_rrd --no-cache
--extra-tests=mpstat,zonestat --extra-script=/home/xymon/server/ext/rrd_data.pl
--rrddir=/home/xymon/data/rrd<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>So it looks like it is in effect, but looking at the tmp
file I still see the following:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>srw-rw-rw- 1 xymon
xymon 0 Nov 13 14:26 rrdctl.7672<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>srw-rw-rw- 1 xymon
xymon 0 Nov 13 14:26 rrdctl.7681<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When I stop and restart xymon I still get messages such as:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>rrd-status.log:2009-11-13 14:26:09 Cache flush completed<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>rrd-status.log:2009-11-13 14:26:18 Peer not up, flushing
message queue<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>So my question is have I placed the –no-cache in the
wrong sequence on the startup command or is that been taken out of beta-2?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thank you,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Tom<o:p></o:p></span></font></p>
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