Hello Maxim. I did this here in order to permanently set the value to 65535: https://medium.com/@muhammadtriwibowo/set-permanently-ulimit-n-open-files-in-ubuntu-4d61064429a
After a reboot, the server displays the increased value after I enter the command: su nobody --shell /bin/bash --command "ulimit -n" è 65535 Here’s the description of how to increase the values, according to the website mentioned above: # To increase the available limit to say 65535 user@ubuntu:~$ sudo vim /etc/sysctl.conf # add the following line to it fs.file-max = 65535 # run this to refresh with new config user@ubuntu:~$ sudo sysctl -p # edit the following file user@ubuntu:~$ sudo vim /etc/security/limits.conf # add following lines to it * soft nproc 65535 * hard nproc 65535 * soft nofile 65535 * hard nofile 65535 root soft nproc 65535 root hard nproc 65535 root soft nofile 65535 root hard nofile 65535 # edit the following file user@ubuntu:~$ sudo vim /etc/pam.d/common-session # add this line to it session required pam_limits.so # logout and login and try the following command user@ubuntu:~$ ulimit -n 65535 Mit vielen freundlichen Grüßen, Alexander Ninnig Rechnungshof Rheinland-Pfalz Gerhart-Hauptmann-Straße 4 67346 Speyer Phone: +49(0)6232/617-285 Fax: +49(0)6232/617-100 Mail: alexander.nin...@rechnungshof.rlp.de<mailto:alexander.nin...@rechnungshof.rlp.de> Web: https://rechnungshof.rlp.de/ Von: Maxim Solodovnik <solomax...@gmail.com> Gesendet: Donnerstag, 12. November 2020 16:35 An: Openmeetings user-list <user@openmeetings.apache.org> Betreff: Re: optimize performance It displays current value from mobile (sorry for typos ;) On Thu, Nov 12, 2020, 22:16 Ninnig, Alexander <alexander.nin...@rechnungshof.rlp.de<mailto:alexander.nin...@rechnungshof.rlp.de>> wrote: Hi, uhm, ok, so it seems like my command didn’t really change anything but just displayed the default-value? Best regards, Alex Von: Maxim Solodovnik <solomax...@gmail.com<mailto:solomax...@gmail.com>> Gesendet: Donnerstag, 12. November 2020 13:50 An: Openmeetings user-list <user@openmeetings.apache.org<mailto:user@openmeetings.apache.org>> Betreff: Re: optimize performance 1024 is the default and it seems to be not enough for 1 room with 5 users .... On Thu, 12 Nov 2020 at 19:16, Ninnig, Alexander <alexander.nin...@rechnungshof.rlp.de<mailto:alexander.nin...@rechnungshof.rlp.de>> wrote: Hi, ok, got it. Ubuntu Server cannot use „root“, unless you activate it by setting a password. So I typed sudo root passwd and set a password. Still, su nobody --shell /bin/bash --command "ulimit -n" was asking for a password, and it wasn’t root nor the password of my linux-user. So I typed su and my new root-password. That worked. After that, I could use the command su nobody --shell /bin/bash --command "ulimit -n". I got the response 1024, I hope that means all is well. Never used „su“ before, always used „sudo“, so I just learned something new. Best regards, let’s see if „ulimit“ changes the behaviour. Alex Von: Maxim Solodovnik <solomax...@gmail.com<mailto:solomax...@gmail.com>> Gesendet: Donnerstag, 12. November 2020 10:08 An: Openmeetings user-list <user@openmeetings.apache.org<mailto:user@openmeetings.apache.org>> Betreff: Re: optimize performance On Thu, 12 Nov 2020 at 16:05, Ninnig, Alexander <alexander.nin...@rechnungshof.rlp.de<mailto:alexander.nin...@rechnungshof.rlp.de>> wrote: Hello Maxim, sorry to bother again, but i wanted to check out this „ulimit“-option, since it looks promising to me. Unfortunately I don’t seem to get it; I always get „su: Authentication failure“ after the command: su nobody --shell /bin/bash --command "ulimit -n" `su` is a way to run command as different user it works as `sudo` to use it you need to authenticate yourself i.e. enter your current Linux password I am using username/password from the configuration file (sudo nano /opt/open501/webapps/openmeetings/WEB-INF/classes/applicationContext.xml; turnUser:userpassword) – copy & paste, so there can’t be a typo. Now, I am kind of stumped here. It should be username/password from the applicationContext.xml, right? this is the user/password for TURN, I doubt you can use it Best regards, Alex Von: Maxim Solodovnik <solomax...@gmail.com<mailto:solomax...@gmail.com>> Gesendet: Donnerstag, 12. November 2020 03:43 An: Openmeetings user-list <user@openmeetings.apache.org<mailto:user@openmeetings.apache.org>> Betreff: Re: optimize performance Hello Alex, On Wed, 11 Nov 2020 at 19:57, Ninnig, Alexander <alexander.nin...@rechnungshof.rlp.de<mailto:alexander.nin...@rechnungshof.rlp.de>> wrote: Hello, again, I have to say, that I really like OpenMeetings 5. When using OM5 inhouse, everything works really well. The webcam-picture is extremely sharp and fluent. Problem is: because of Covid19, a lot of our employees are working from their home and they don't have the best internet-bandwith (and sometimes, they don't know it and blame the system). Using OM5 with people who are working from home seems to be a little bit more unstable, than OM4. Somehow I guess, that OM5 transmits more data than OM4. So when using OM5, people get constantly disconnected from the media server. Please ensure ulimit for the user who run OM/KMS/TURN on server since "everything is a file" it should be possible to open lot's of files here is an example command `su nobody --shell /bin/bash --command "ulimit -n"` Except for the webcam-videosize: is there anything more I can do to decrease the transmitted data? Can I reduce the framerate? you can try cam.fps (Admin->Config https://openmeetings.apache.org/GeneralConfiguration.html) Can I activate some sort of higher compression? unfortunately browser will "auto-deside" all these parameters and we can only _try_to_change_anything_ Best regards, Alex -- Best regards, Maxim -- Best regards, Maxim -- Best regards, Maxim
