[Spce-user] CPU spike when navigating UI?

[Kalen Krueger]

We've been running sip:wise since mr3.3.1 on the same virtual hardware for almost a year and have never had the problem... as soon as we upgraded from 3.5.1 -> 3.7.2 a few weeks ago this problem began... and it appears to be intermittent.   Previously we thought it was only occurring if we were in the GUI making adjustments, which is when I started this thread.   In this particular case we weren't doing anything in the GUI... it was actually after business hours for us.  We had a subscriber contact us to report the problem with calls... and our only short term fix was the restart the system.

Also, we haven't added any new subscribers of significance since the recent upgrade.   It certainly could be that the new version requires more resources, but I looked through our performance monitoring over for the last several weeks, and it appears that the CPU requirements have generally gone down since the upgrade.   So a bit stumped right now....

-----Original Message-----
From: Spce-user [mailto:spce-user-bounces at lists.sipwise.com] On Behalf Of Raúl Alexis Betancor Santana
Sent: Thursday, April 9, 2015 11:27 PM
To: spce-user at lists.sipwise.com
Subject: Re: [Spce-user] CPU spike when navigating UI?

That's and under-powered-system situation ... could be that you are running the SCPE on a system without the enought resources ... or could be the 'maniatic' collecd eating all the CPU, I seen that on various SPCE installations.

Take a look at the output of the top command and see who is eating the CPU.


----- Mensaje original -----
> De: "Dustin Rollins" <dustin at npinfo.com>
> Para: "Alex Lutay" <alutay at sipwise.com>, spce-user at lists.sipwise.com
> Enviados: Viernes, 10 de Abril 2015 6:00:20
> Asunto: Re: [Spce-user] CPU spike when navigating UI?

> After Kalen (my co-worker) wrote this the system appeared to return to 
> normal operation, fairly quick and responsive.
> 
> Today we experienced an issue where calls were failing.  Upon logging in to the
> web interface the performance was extremely poor.   I did a little
> troubleshooting and found that at the bottom of 'dmesg' output we had 
> a line that read:
> 
> [sched_delayed] sched: RT throttling activated
> 
> After a few moments of googling found posts that would lead me to 
> believe this may be effecting the call processing and the Web UI performance.
> 
> Any thoughts or advice would be greatly appreciated.
> 
> Dustin
> 
> 
> 
> -----Original Message-----
> From: Spce-user [mailto:spce-user-bounces at lists.sipwise.com] On Behalf 
> Of Alex Lutay
> Sent: Thursday, April 2, 2015 4:50 AM
> To: spce-user at lists.sipwise.com
> Subject: Re: [Spce-user] CPU spike when navigating UI?
> 
> Dear Kalen,
> 
> This is true, Perl-based fast-cgi process "ngcp-panel" is quit heavy.
> We have a plans to optimize it but nothing ready for release yet.
> 
> Feel free to profile it from your side and send pull requests to 
> https://github.com/sipwise/ngcp-panel
> 
> Pull requests are welcome! Tnx!
> 
> On 31/03/15 02:17, Kalen Krueger wrote:
>> All of a sudden when we navigate the UI we're seeing CPU spike.
>> Without navigating around the system runs great... but as soon as we 
>> do that it spikes.
>>
>> The process that spikes is perl-fcgi by user www-data.
>>
>> iotop shows I/O as very low... we're running with 4GB of RAM.    Thoughts?
> 
> --
> Alexander Lutay
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