On 20 Apr 2015, at 11:49, Daniel-Constantin Mierla <[email protected]> wrote:
> IIRC, the issue appeared to be related to virtualization, because the > the process should have been blocked in I/O state by recvfrom(). > > Anyhow, to confirm this, look at the process using lot of cpu with gdb > and get the backtrace: Funny enough we don't see any process with a specific high load, just the load average. We'll try chasing a particular process. Running top kamailio doesn't even show. /O > > gdb /path/to/kamailio PID > bt > > Cheers, > Daniel > > On 20/04/15 11:24, Alex Balashov wrote: >> I encountered the identical condition inside VirtualBox and remarked upon it >> to the list previously. This is why I had to revert to rtimer + mqueue + >> tm_suspend/continue manual approaches. >> >> -- >> Alex Balashov | Principal | Evariste Systems LLC >> 303 Perimeter Center North, Suite 300 >> Atlanta, GA 30346 >> United States >> >> Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct) >> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ >> >> Sent from my BlackBerry. >> Original Message >> From: Olle E. Johansson >> Sent: Monday, April 20, 2015 03:58 >> To: Kamailio (SER) - Development Mailing List >> Reply To: Kamailio (SER) - Development Mailing List >> Subject: [sr-dev] ASYNC module - CPU load >> >> Good morning! >> >> In one installation where Kamailio runs in a VMware virtual machine we use >> Async in a registrar. >> >> There's no traffic - only one SIP device registred - but the CPU load goes >> up. >> >> If we change the workers to 1 CPU load goes down, if we set it to 8 CPU load >> average quickly goes up to 3. If we add a second CPU, nothing changes. >> Again, with no traffic. The CPU load is directly related to number of >> workers, but not if they are used or not. >> >> My conclusion is that something in the Async module is causing CPU load >> regardless of traffic - primarily depending on the number of workers. >> >> I don't think that's the correct behaviour ;-) >> >> Kamailio 4.2.0 >> >> Cheers, >> /O >> _______________________________________________ >> sr-dev mailing list >> [email protected] >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev >> >> _______________________________________________ >> sr-dev mailing list >> [email protected] >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev > > -- > Daniel-Constantin Mierla > http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda > Kamailio World Conference, May 27-29, 2015 > Berlin, Germany - http://www.kamailioworld.com > > > _______________________________________________ > sr-dev mailing list > [email protected] > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev _______________________________________________ sr-dev mailing list [email protected] http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
