Hi there Maxim... I did a test with 8 computers and 2 tablets last night (spread across 2 WiFis)... please don’t delete the logs on the OM demo server (next)... I will come back to you all with some feedback and pics later tomorrow (if that’s okay)... however, for reference... I started the process in the public room #7...start time around 8.22pm (12th Nov) (México... 6 hrs behind) and end time 9.50pm... (if you want to check the logs) .... the short version is that 8 users experienced relatively stable performance. Will give you a more detailed feedback once I deal with a personal issue. All the best, Denis.
Sent from my iPhone > On Nov 11, 2020, at 9:09 PM, Maxim Solodovnik <[email protected]> wrote: > > Hello All, > > I'll try to answer in one email :) > >> On Wed, 11 Nov 2020 at 20:32, dww <[email protected]> wrote: >> However, Denis, I think your experiment with multiple devices would be >> valuable as then there is only one browser tab or window with the OM >> room open as a guest on each device. Perhaps that will make a >> difference. > > yes, this would be better test (even if "fake" camera is used) > >> >> Dennis >> >> On Wed, 2020-11-11 at 08:24 -0500, dww wrote: >> > Thanks, Denis, >> > >> > Back on Oct. 17 Maxim provided the following Bash script to be run on >> > the machine with a client side browser for the psuedo guest users. ( >> > Use another machine to create the room administratively and send >> > invitations) This is a far simpler way to stress test the client side >> > browser. >> > >> > Dennis >> > >> > Hello, >> > >> > i just have tried the following script >> > started as `./run10.sh 5` >> > >> > everything seems to work, but my CPU was 800% busy (all cores were >> > 100% >> > busy) >> > >> > without `--use-fake-device-for-media-stream` parameter I had lots of >> > permission errors due to camera was "captured" by first browser >> > other have reported "Camera busy" error >> > >> > >> > _HASH_HERE_ - should be replaced with real hash (I have created >> > endless >> > invitation hash to the private conference room) >> > >> > the script >> > =============================================== >> > #!/bin/bash >> > >> > i=$1 >> > >> > if [ -z "${i}" ]; then >> > i=30 >> > fi >> > let "i += 0" >> > >> > rm -rf /tmp/delme* >> > >> > while ((i--)); do >> > #echo "${i}" >> > mkdir /tmp/delme${i} >> > >> > #local conference >> > chromium-browser --user-data-dir=/tmp/delme${i} --disable-infobars >> > --no-default-browser-check --allow-insecure-localhost >> > --use-fake-device-for-media-stream ' >> > https://localhost:5443/openmeetings/hash?invitation=_HASH_HERE_&language=1' >> > & >> > done >> > >> > >> > On Wed, 2020-11-11 at 01:53 -0600, Denis Noctor wrote: >> > > Hi there everyone, this seems to be the “elephant in the room” >> > > discussion, while there has been a HUGE amount of development and >> > > progress in OM since March (thank you so much @Maxim) ... there is >> > > the whole issue of, for example, the number of users per room... >> > > which seems to be about 5-6 (and maybe even to 7) when pushed to >> > > the >> > > limit... with both audio and video being broadcasted from all >> > > users... and, something else.. if there are simultaneous >> > > classes/sessions being held on the same server... will this >> > > restrict >> > > things even further? Is this an overall limitation > > Sebastian did some AWS based testing > And, if i'm not mistaken, the server with 4GB RAM was able to handle at least > 3 rooms of 5 people > (5.1.0-SNAPSHOT should behave better than 5.0.1) > > to increase the number of rooms you can use cluster > >> to using a >> > > browser >> > > based approach... or should we be taking approach? > > well, > there is "The Limit" > KMS can handle only certain amount of multimedia connections > additionally there are other limits: > - bandwidth > - CPU > - RAM > - open files (network socket is a file) > > "The Limit" is something I'm not sure how to deal with (yet) > >> > > >> > > It was my intention to test out the OM “demo servers” over the last >> > > 2 >> > > weeks but will take today off and try to test 10 real device >> > > connections... with a combination of desktops, laptops, android >> > > tablets and maybe even the odd iPhone or two. > > Apple devices has issues with sound (outgoing) > I'm still investigating this one > >> > > >> > > My million dollar question is... prior to WebRTC and Kurento... was >> > > it possible to have 5-10 users in a room with audio and video >> > > working >> > > seamlessly in previous versions (for example, the old “flash” setup >> > > (which will be redundant after Christmas... Chrome etc >> > > notifications) >> > > and if so, what has changed? > > Yes this was possible > OM_before_5 was based on Red5 media server > Unfortunately it's open source version has no WebRTC support > >> > > >> > > If there is anyone out there that has no problem with user numbers >> > > (using audio and vid)... exceeding a body of 7-10+, please let us >> > > know. >> > > >> > > In the meantime, I’ll give you my feedback on my tests. >> > > >> > > I really appreciate everything that has been done to date. >> > > >> > > Thanks. >> > > >> > > Sent from my iPhone >> > > >> > > > On Nov 9, 2020, at 4:50 PM, dww <[email protected]> wrote: >> > > > >> > > > Hello Maxim, >> > > > >> > > > A couple of weeks ago there was an email thread about the 5 total >> > > > users >> > > > for one room, each user with video/microphone under the >> > > > Subject: "docker container clustering experiments #1". > > For whatever reason you love to start new mail threads :)))) > >> In this >> > > > case >> > > > it >> > > > appears the bottleneck is the CPU usage on the client machine >> > > > with >> > > > the >> > > > browser. >> > > > >> > > > In a response to Denis Noctor on a similar thread you mentioned >> > > > to >> > > > try >> > > > the following: >> > > > >> > > > "please check allowed amount of opened files for the user who >> > > > starts >> > > > OM/KMS/TURN >> > > > increasing it might help" >> > > > >> > > > Might this help with the issue we discussed? Where approximately >> > > > do >> > > > I >> > > > set the allowed amount of opened files? > > KMS seems to drop connections when there is not enough files > (network socket is a file) > you can check the limit for current user using `ulimit -n` (`ulimit -a` to > see all limits) > > to check limit for `nobody` user `su nobody --shell /bin/bash --command > "ulimit -n"` > > to increase the limit i'm changing `/etc/security/limits.conf` file > https://github.com/openmeetings/openmeetings-docker/blob/48b72f4d0f38a0fab2021a0a2e4d6693c61c00be/scripts/om_euser.sh#L35 > > (seems to work at Ubuntu) > > >> > > > >> > > > Also are there any other things that can be tried to improve this >> > > > scalability? Are there areas in the code that can be examined to >> > > > investigate how to improve this? > > KMS cluster would be ultimate solution, I guess > >> > > > >> > > > Thanks, >> > > > Dennis >> > > > >> > > > >> > > > -- > Best regards, > Maxim
