Re: [sr-dev] Large memory allocation on module startup

-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com -----Original Message----- From: kthulasizwe@gmail.com kthulasizwe@gmail.com Sent: Friday, August 12, 2022 1:21 PM To: Henning Westerholt hw@gilawa.com Cc: Kamailio (SER) - Development Mailing List sr-dev@lists.kamailio.org Subject: Re: [sr-dev] Large memory allocation on module startup Yes, that has been my precise reaction as well. > On 12 Aug 2022, at 13:14, Henning Westerholt hw@gilawa.com wrote: > > Hello, > > but you are saying you are not using the memory? This is really odd, why should it affect performance if the system itself does enough memory. > > Cheers, > > Henning > > -- > Henning Westerholt – https://skalatan.de/blog/ Kamailio services – > https://gilawa.com > > -----Original Message----- > From: kthulasizwe@gmail.com kthulasizwe@gmail.com > Sent: Friday, August 12, 2022 1:12 PM > To: Henning Westerholt hw@gilawa.com > Cc: Kamailio (SER) - Development Mailing List > sr-dev@lists.kamailio.org > Subject: Re: [sr-dev] Large memory allocation on module startup > > Thanks for the reply, > So previously under load testing, I could do around 240 registrations per seconds and now it’s only around 180. > > Also, forgot to mention, it would perform better (around 228 reps) when the load testing was delayed for 10 to 20 minutes after restarting. > > >> On 12 Aug 2022, at 12:53, Henning Westerholt hw@gilawa.com wrote: >> >> Hello, >> >> can you add a bit more details, e.g. before it took x seconds and now it takes y seconds? >> >> Some modules (e.g. carrierroute) can allocate quite large shared memory segments during startup, and it should work ok. >> >> Cheers, >> >> Henning >> >> -- >> Henning Westerholt - https://skalatan.de/blog/ Kamailio services - >> https://gilawa.com >> >> -----Original Message----- >> From: sr-dev sr-dev-bounces@lists.kamailio.org On Behalf Of >> kthulasizwe@gmail.com >> Sent: Friday, August 12, 2022 11:04 AM >> To: sr-dev@lists.kamailio.org >> Subject: [sr-dev] Large memory allocation on module startup >> >> Hi Guys, >> >> I have recently modified a custom module, where I now shm_mallocxz 2MB, as part of module start up and this memory is not being used as yet. >> >> Previously, the would be smaller chunks(100 bytes at most) shm_malloced during message processing. >> I have observed significant runtime performance degradation from just this single change. I would appreciate any suggestions/thoughts you might have. >> >> Below are some the relevant details. >> >> OS:Alpine Linux >> RAM: 16GB >> Configured Shared memory: 4GB >> shm_force_alloc=1 >> Typical shared memory usage: 1.5GB >> System swapping is disabled, also observed during load testing that no mem is getting swapped. >> >> >> _______________________________________________ >> Kamailio (SER) - Development Mailing List sr-dev@lists.kamailio.org >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev