[Xymon] xymonproxy perf issue

[Gautier Begin]

Henrik,

I applied the patch on my test machine that has not pbl => all continues 
to run well

I applied the patch on the machine with the 100%CPU  issue. I get the same 
behaviour, the content of the xymonproxy.log is the following lines 
looping:
1166 2014-01-28 18:09:00 state 0: reading from client
1166 2014-01-28 18:09:00 state 1: reading from client
1166 2014-01-28 18:09:00 state 2: request combining
1166 2014-01-28 18:09:00 state 3: sending to server
1166 2014-01-28 18:09:00 state 4: reading from client
2014-01-28 18:09:00 select() failed: Invalid argument


Could the issue come from the fact that le @IP of the machine in the DNS 
is associated with 2 hostnames (not alias) ?

Cordialement, Regards,Mit freundlichen Grüßen,

Gautier BEGIN

System Tools Team Lead
CACEIS and APERAM accounts
CSC Computer Sciences Luxembourg S.A.
12D Impasse Drosbach
L-1882 Luxembourg

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From:   henrik at hswn.dk
To:     <xymon at xymon.com>
Date:   01/20/2014 11:42 AM
Subject:        Re: [Xymon] xymonproxy perf issue
Sent by:        "Xymon" <xymon-bounces at xymon.com>



Den 17.01.2014 16:14, Gautier Begin skrev:
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))) {
[snip]
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 suspect some kind of error happened with the network socket handling. 
Could you add this patch and try to reproduce the problem? It doesn't 
change the behaviour, but it does add some error-reporting in case the 
core select() call fails.
 
Regards,
Henrik
 
 [attachment "proxyerror.diff" deleted by Gautier Begin/LUX/CSC] 
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