<font size=2 face="sans-serif">Hello,</font>
<br>
<br>
<br><font size=2 face="sans-serif">Thanks for sharing your experiences.</font>
<br>
<br><font size=2 face="sans-serif">Here, I can't use any SSD disk but SAN
ones with cache before. What do you think about it?</font>
<br>
<br><font size=2 face="sans-serif">Cordialement, Regards,Mit freundlichen
Grüßen,<br>
<br>
Gautier BEGIN<br>
<br>
Admin and Tools Team<br>
CSC Computer Sciences Luxembourg S.A.<br>
12D Impasse Drosbach<br>
L-1882 Luxembourg<br>
<br>
Global Outsourcing Service | p:+352 24 834 276 | m:+352 621 229 172 | gbegin@csc.com
| </font><a href=www.csc.com><font size=2 face="sans-serif">www.csc.com</font></a><font size=2 face="sans-serif"><br>
<br>
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<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">From:</font>
<td><font size=1 face="sans-serif">Nicolas LIENARD <nicolas@lienard.name></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">To:</font>
<td><font size=1 face="sans-serif"><xymon@xymon.com></font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Date:</font>
<td><font size=1 face="sans-serif">10/05/2011 09:03 AM</font>
<tr valign=top>
<td><font size=1 color=#5f5f5f face="sans-serif">Subject:</font>
<td><font size=1 face="sans-serif">Re: [Xymon] Big Environment</font></table>
<br>
<hr noshade>
<br>
<br>
<br><font size=3>Hello</font>
<p><font size=3>In our company, we got ~10 000 devices split into 10 countries
:</font>
<p><font size=3>19 hobbit clusters in total. (1 hobbit cluster in each
Datacenter).</font>
<p><font size=3>we use bbproxy to report to one single hobbit cluster (central):</font>
<p><font size=4><b>Wed Oct 5 07:37:25 2011</b></font>
<p><font size=3>Statistics: Hosts total : 10866</font>
<p><tt><font size=3>Incoming messages/sec :
478 (average last 300 seconds)<br>
</font></tt>
<p><font size=3>The maximum of hosts for a local hobbit cluster is 3655
:</font>
<p><font size=3> </font>
<p><font size=3>Here the stat of this local cluster :</font>
<p><tt><font size=3>Statistics:<br>
Hosts total : 3655<br>
Hosts with no tests : 60<br>
Total test count : 9809<br>
Status messages : 10151<br>
Alert status msgs : 0<br>
Transmissions : 326<br>
</font></tt>
<br><tt><font size=3>TCP test statistics:<br>
# TCP tests total : 6214<br>
# HTTP tests : 2342<br>
# Simple TCP tests : 3872<br>
# Connection attempts : 6214<br>
# bytes written : 396441<br>
# bytes read : 24395876<br>
</font></tt>
<br><tt><font size=3>TCP tests completed
134011.876173
30.657820 <br>
PING test completed (3650 hosts)
134012.458682 0.582508 </font></tt>
<br><tt><font size=3>TIME TOTAL
44.107030 <br>
</font></tt>
<br><tt><font size=3>Incoming messages/sec :
173 (average last 300 seconds)<br>
</font></tt>
<br><tt><font size=3>The hardware is a cluster of 2 HP DL360 G7 with 4
SSD drives in raid5 for /opt/xymon/data.<br>
<br>
We chose SSD for I/O performances.<br>
<br>
<br>
load average: 0.74, 0.84, 0.82<br>
<br>
We use heartbeat for VIP and DRBD for replication.<br>
<br>
We didnt disabled hostdata but maybe we should do (we have a couple of
scripts to clean up the hostdata, histfiles, etc).<br>
<br>
On the local cluster<br>
/dev/drbd0 34078720 11545129 22533591
34% /opt/xymon/data<br>
/dev/drbd0 122G 69G
47G 60% /opt/xymon/data<br>
<br>
-> 11 millions of files<br>
<br>
<br>
On the central cluster<br>
/dev/drbd0 89522176 77497570 12024606
87% /opt/hobbit/data<br>
/dev/drbd0 673G 458G 181G
72% /opt/hobbit/data<br>
<br>
-> 77 millions of files<br>
<br>
it becomes high.<br>
<br>
sometimes we experienced ASR on hobbit servers :/<br>
<br>
Cheers<br>
Nico<br>
<br>
<br>
</font></tt>
<p><font size=3> </font>
<p><font size=3> </font>
<p><font size=3>On Tue, 4 Oct 2011 10:12:57 -0400, Brand, Thomas R. wrote:</font>
<p><font size=2 color=#004080>I have 7363 hosts being monitored in my environment.</font>
<br><font size=4><b>Tue Oct 4 10:05:58 2011</b></font>
<br><tt><font size=3>Statistics:</font></tt>
<br><tt><font size=3> Hosts
: 7363</font></tt>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080>OS: SuSE Linux Enterprise v11.0</font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080>I found network I/O a challenge, and had
to set up a bbproxy server and split the ping test over two Xymon servers,
each server handling about ½ the load. Time spent on ping tests (on each
server) is about 170 seconds. </font>
<p><font size=2 color=#004080> </font>
<p><font size=2>Proxy statistics</font>
<p><font size=2>Incoming messages : 3332629
(48 msgs/second)</font>
<p><font size=2>Outbound messages : 1778658</font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080>The disk i/o with this many hosts is also
difficult – at least on my hardware (IBM x225 server). </font>
<p><font size=2 color=#004080>I also disabled [hostdata] in hobbitlaunch.cfg
– my systems could not keep up with the i/o.</font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080>I cut down on message traffic by using a
the ‘ignore’ and ‘trigger’ capability of the logfile checker in</font>
<p><font size=2 color=#004080>client-local.cfg, thereby filtering at the
client; eg: </font>
<p><font size=2 color=#004080>log:/var/log/daemon.log:4096</font>
<p><font size=2 color=#004080> ignore (upsd.*: Set variable|apcsmart.*enum
|dhcpd: |xinetd.*: |squid.*: |ntpd.*: |Connection from |logged out)</font>
<p><font size=2 color=#004080> trigger shutdown</font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080> </font>
<p><font size=2 color=#004080> </font>
<p><font size=2><b>From:</b> xymon-bounces@xymon.com [</font><a href="mailto:xymon-bounces@xymon.com"><font size=2>mailto:xymon-bounces@xymon.com</font></a><font size=2>]
<b>On Behalf Of </b>Josh Luthman<b><br>
Sent:</b> Tuesday, October 04, 2011 8:29 AM<b><br>
To:</b> Gautier Begin<b><br>
Cc:</b> xymon@xymon.com<b><br>
Subject:</b> Re: [Xymon] Big Environment</font>
<p><font size=3> </font>
<p><font size=3>I saw a ~7250 host quickly scrolling through it<br>
</font><font size=3 color=blue><u><br>
</u></font><a href=http://en.wikibooks.org/wiki/System_Monitoring_with_Xymon/User_Guide/The_Xymon_Users_list><font size=3 color=blue><u>http://en.wikibooks.org/wiki/System_Monitoring_with_Xymon/User_Guide/The_Xymon_Users_list</u></font></a><font size=3><br>
<br>
Josh Luthman<br>
Office: 937-552-2340<br>
Direct: 937-552-2343<br>
1100 Wayne St<br>
Suite 1337<br>
Troy, OH 45373<br>
</font>
<p><font size=3>On Tue, Oct 4, 2011 at 8:24 AM, Gautier Begin <</font><a href=mailto:gbegin@csc.com><font size=3 color=blue><u>gbegin@csc.com</u></font></a><font size=3>>
wrote:</font>
<p><font size=2>Hello,</font><font size=3> <br>
</font><font size=2><br>
I'm planning to use XYMON with a big amount of clients: 1000 and then 4000.</font><font size=3>
<br>
</font><font size=2><br>
Is it possible ?</font><font size=3> </font><font size=2><br>
Are there some tipps and limitations to know ?</font><font size=3> <br>
</font><font size=2><br>
Cordialement, Regards,Mit freundlichen Grüßen,<br>
<br>
Gautier BEGIN<br>
<br>
Admin and Tools Team<br>
CSC Computer Sciences Luxembourg S.A.<br>
12D Impasse Drosbach<br>
L-1882 Luxembourg<br>
<br>
Global Outsourcing Service | p:+352 24 834 276 | m:+352 621 229 172 | </font><a href=mailto:gbegin@csc.com><font size=2 color=blue><u>gbegin@csc.com</u></font></a><font size=2>
| </font><a href=http://www.csc.com/><font size=2 color=blue><u>www.csc.com</u></font></a><font size=2><br>
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<p><font size=3> </font>
<p><font size=3> </font>
<p><font size=3> </font><tt><font size=2>_______________________________________________<br>
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