[Xymon] xymonproxy perf issue

[Gautier Begin]

Hello,

Could it comes from how the xymonproxy program handles the MACHINE 
variable ?

I say that because when the process becomes nuts, he makes only 'gettimer' 
action. Then I have a look in the source file and found this line (line 
452) that could correspond:

if (proxyname && ((now = gettimer()) >= (laststatus+300))) {


proxyname comes from $MACHINE

Cordialement, Regards,Mit freundlichen Grüßen,

Gautier BEGIN


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From:   Gautier Begin/LUX/CSC at CSC
To:     xymon at xymon.com
Date:   01/17/2014 02:42 PM
Subject:        Re: [Xymon] xymonproxy perf issue
Sent by:        "Xymon" <xymon-bounces at xymon.com>



Henrik, 

I managed to reproduce the issue: 
- I start the XYMON as a proxy server => Non pbl 
- Stop the XYMON                                     =>  Process remains 
alive (xymonlaunch) 
- Kill the xymonlaunch 
- Start the XYMON as aproxy server   => The pbl occurs again 

Could some files in the ./tmp of XYMON influence this ? 
  

Cordialement, Regards,Mit freundlichen Grüßen,

Gautier BEGIN




From:        henrik at hswn.dk 
To:        <xymon at xymon.com> 
Date:        01/14/2014 03:00 PM 
Subject:        Re: [Xymon] xymonproxy perf issue 
Sent by:        "Xymon" <xymon-bounces at xymon.com> 



Den 14.01.2014 14:23, Gautier Begin skrev: 
Last Sunday, I wanted to start a xymonproxy (vers 4.3.12) on a Solaris 
10.5 with 900 targets . I had a performance issue: 
- The xymonproxy process used 100% of only one CPU (no multithread seen). 
- On the main XYMON server, data from this proxy (I have one other on 
Ubuntu with 50 targets working fine) came with difficulties (delays and 
lacks). 

I tried to used the -lqueue option for the proxy with no success. 
Nothing special seen in any logs. 
The UNIX admin said me that the xymonproxy was just making 'time()' 
command all the time. 
I've had the proxy handling about 5000 hosts simultaneously. On Linux, 
though. 
I have not heard of such behaviour before, and I am sure there must be 
others running the proxy on Solaris in a similar setup. If you can make it 
happen again, please do a "kill -USR2" on the xymonproxy process to toggle 
debugging on/off. 
None of the Xymon tools are multithreaded - so far I have stuck to the 
traditional Unix way of doing things. 
 
Regards, 
Henrik 
 
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