<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Andreas,<div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Thank you for the answer. I took another look and want to clarify what I'm seeing:</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>If one of the hosts that GenericJMX is watching is hung, the plugin will no longer gather data from all the hosts. All other plugins (CPU, swap, memory, etc) work fine.</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Does anyone on the list use GenericJMX to watch multiple hosts and has seen this issue?</div><div><br></div><div><br></div><div><br></div><div><br></div><div>- josh jacob</div><div><br></div><div><br></div><div><br><div><div>On Mar 3, 2012, at 6:00 AM, <<a href="mailto:collectd-request@verplant.org">collectd-request@verplant.org</a>> <<a href="mailto:collectd-request@verplant.org">collectd-request@verplant.org</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Hi.<br><br>Yes we see this quiet often but it is harmless and caused by jitter<br>in your system time. Depending on your collectd interval and the system load<br>this will occur quiet often. We usually see this messages on a VMware<br>under heavy I/O load.<br><br>As said before, this is nothing to worry about.<br><br>HTH,<br><br>Andreas.<br><br>On 03/02/12 15:15, Josh Jacob wrote:<br><blockquote type="cite">I have a collectd 5.0.1 instance monitoring 6 local Tomcat instances with the GenericJMX plugin. One of my Tomcat instances will occasionally run out of heap and essentially become unresponsive. When that happens, collectd/GenericJMX won't collect data from any of the other Tomcat instances even though the other instances are running fine. The collectd log starts to fill with lots of these messages:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">[2012-03-02 06:39:59] rrdtool plugin: rrd_update_r (/opt/collectd/var/lib/collectd/rrd/localhost/GenericJMX-tomcat1-memory_pool-CMS Perm Gen/jmx_memory-init.rrd) failed: /opt/collectd/var/lib/collectd/rrd/localhost/GenericJMX-tomcat1-memory_pool-CMS Perm Gen/jmx_memory-init.rrd: illegal attempt to update using time 1330688269 when last update time is 1330688269 (minimum one second step)<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Has anyone on the list seen or addressed anything like this?<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">- josh<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">collectd mailing list<br></blockquote><blockquote type="cite"><a href="mailto:collectd@verplant.org">collectd@verplant.org</a><br></blockquote><blockquote type="cite"><a href="http://mailman.verplant.org/listinfo/collectd">http://mailman.verplant.org/listinfo/collectd</a><br></blockquote><blockquote type="cite"><br></blockquote></span><br class="Apple-interchange-newline"></blockquote></div><br></div></body></html>