OK, please test build #115+ from here https://ci-builds.apache.org/job/OpenMeetings/job/openmeetings/
I would like to confirm if audio/video streams in the room are more stable :) Please NOTE configuration has been changed most valuable configurable parameters are now in ./webapps/openmeetings/WEB-INF/classes/openmeetings.properties :) On Fri, 23 Oct 2020 at 13:50, Denis Noctor <denisnoc...@gmail.com> wrote: > Hi there Maxim, > > I know you've mentioned that you are working on a few alternatives since > this email but I thought it best to get back in touch. > > As you will see from the attached screenshot, I mustered up a few > computers (equally spread over 2 wifi networks in my home... in different > parts to reduce sound feedback etc. as I do not have enough headsets). A > few points to take into consideration... some of these computers are older > than others... varying in RAM and CPU... but ALL were using the latest > version of Chrome. This is what I noticed: > > While you can see from the screenshot, there are 7 users in a room (6 of > which using 120x90 screen res and 1 using 320x240 - audio and vid channels > open)... there had been some issues. I let the room open for about 40 mins > but some video pods "dropped" from some computers... with no indication as > to whether users were still active or not. Sometimes I had to "reconnect" > video and audio on others. Some computers showed all 7 connections... while > others showed 3... but AFTER I added *an 8th user* (via an Amazon Fire > tablet) "Video / Audio" pods began to drop from a lot of the computers... > showing only 3-4 videos pods... and disconnecting users... and sometimes > being unable to reconnect... or refresh their screen (on one computer... > Chrome became unresponsive). > > When I added the "8th user" to the group... sound quality dropped... with > a very "scratchy" interference noise for all users. > > Things were much more stable with 5 users in a room. > > Of course, as you can imagine... this is a "one room" scenario. > > While I have mentioned that I was using older to newer computers and > tablets (based on what is available to me)... all of them were able to > perform okay in Microsoft Teams and Zoom scenarios (tested)... but > obviously with varying degrees of performance due to speed, cpu, ram etc. > > This seems to be a major issue and I am happy to test everything out on > the OM demo sites and give feedback over the next few days if you would > like. My next question would be... if that you had 2 similar rooms / > classes open under the same circumstances... would the overall performance > be even worse? > > I have tested this on a single AWS server, Ubuntu 18.04, 8 gigs ram server > etc (OM 5 M4... yes, I know, I know... will upgrade soon... but assume this > issue has crossed over to other versions - I will retest on the OM demos > online.) > > Hope some of this feedback helps. > > > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > Virus-free. > www.avg.com > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > <#m_-8536094403591139251_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > On Thu, Oct 22, 2020 at 7:08 AM Maxim Solodovnik <solomax...@gmail.com> > wrote: > >> Hello Denis, >> >> please let me know if 10 users in the room will be OK >> we need to change the way cluster works in case current configuration is >> not stable/powerful enough >> >> On Thu, 22 Oct 2020 at 13:33, Denis Noctor <denisnoc...@gmail.com> wrote: >> >>> Actually... this is something that had crossed my mind recently. >>> Previously, I’ve had on average 5 users per group... but on occasion if >>> there more than 5 users (in and around 7-10) some users... some would >>> intentionally drop drop their cam... and sometimes mic... (I thought it >>> might have been due to bandwidth issues on their side)... but I’ve got my >>> own kids taking online classes via their schools... whereby there are a min >>> of 20 attending a class and so on (different platforms etc.) >>> >>> I have about a combination of 5 to 6 computers at home due to home >>> office / covid restrictions etc. and am happy to log in to either the OM >>> demo sites or others to try replicate this scenario. (and my own, of >>> course). >>> >>> Yep, I’ve been reading up on WebRTC and Kurento regarding connectivity >>> limitations regarding audio and video... this has been covered a lot >>> recently in previous posts in this forum... and from memory it is somewhere >>> between 200-300 connections... (per server? / instance?) >>> >>> For example... if you have 5 users in a room (using audio and video) >>> this will result in 5 (users) x 5 audio connections x 5 video >>> connections... giving “125” connections... but if you have 7 users in a >>> room receiving and experiencing audio and vid... that is 7x7x7= 343 >>> connections... which obviously exceeds the connections as per previous >>> posts. >>> >>> I have had a scenario whereby 3 classes were held at the same time on >>> the same AWS instance... and nobody has reported a problem (yet... or they >>> unknowingly downplayed it due to internet bandwidth problems etc.)... but >>> the max number of students per room has been 4-5.... >>> >>> I am happy to test this more with others, if you are up for it and am >>> watching this carefully. >>> >>> I have a scheduled meeting with 10 participants next week and am now >>> nervous... and curious to see how it works out. >>> >>> Talk soon. >>> >>> Denis >>> >>> >>> >>> Sent from my iPhone >>> >>> > On Oct 21, 2020, at 7:57 PM, dww <dwort...@mykolab.com> wrote: >>> > >>> > Does anyone have an idea why the client browser seems to limited to 5 >>> > video pods when each user connects with both video and microphone. >>> > >>> > It seems to definitely max out the CPU(s) on the client computer. How >>> > do other applications like Zoom or Microsoft Teams get around this >>> > issue. Do they throttle back the streaming of the video pods or views >>> > of many or most of the pods and do it in some kind of round-robin >>> > update? >>> > >>> > Am I just doing something wrong. >>> > >>> > Any response would be appreciated. I would like to start uses OM for >>> > meetings next month. >>> > >>> > Thanks, >>> > Dennis >>> > >>> > >>> >> On Sun, 2020-10-18 at 17:40 -0400, dww wrote: >>> >> When creating 3 guests on each of 2 other laptops that I run into the >>> >> same issues,so it seems that the main limitation is the number of >>> >> video/audio pods within a client. Is there anyway to get around that >>> >> as >>> >> it implies that one annot have more than 4 or 5 guests with both >>> >> video >>> >> and audio? >>> >> >>> >> Dennis >>> >> >>> >> >>> >> >>> >>> On Sun, 2020-10-18 at 13:00 -0400, dww wrote: >>> >>> Yes I get the same result, however, this does not appear to be a >>> >>> valid >>> >>> stress test of kms. This stress tests a client machine with >>> >>> multiple >>> >>> tabs or browser windows each with connections and determines that >>> >>> it >>> >>> is >>> >>> CPU bound. >>> >>> >>> >>> It seems the only way to stress test kms is to do this with >>> >>> multiple >>> >>> client machines. I have 3 laptops here and a couple of smart phones >>> >>> so >>> >>> I will try distributing the client windows among all of them. >>> >>> >>> >>> Dennis >>> >>> >>> >>>> On Sun, 2020-10-18 at 10:56 +0700, Maxim Solodovnik wrote: >>> >>>> I'm on Ubuntu 20.04 desktop? so i can use UI >>> >>>> if you are using server I would recommend `htop` >>> >>>> >>> >>>>> On Sun, 18 Oct 2020 at 10:54, dww <dwort...@mykolab.com> wrote: >>> >>>>> May I ask for your linux command line that got the CPU >>> >>>>> percentage >>> >>>>> for all cores? >>> >>>>> thanks, >>> >>>>> Dennis >>> >>>>> >>> >>>>> >>> >>>>> >>> >>>>>> On Sat, 2020-10-17 at 12:59 +0700, Maxim Solodovnik wrote: >>> >>>>>> 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 Fri, 16 Oct 2020 at 09:10, dww <dwort...@mykolab.com> >>> >>>>>> wrote: >>> >>>>>>> I mentioned earlier that I wanted to experiment with >>> >>>>>>> clustering >>> >>>>>>> using >>> >>>>>>> docker swarm for the kms service. >>> >>>>>>> >>> >>>>>>> I wanted to establish a base line using one container for >>> >>>>>>> kms. >>> >>>>>>> All the >>> >>>>>>> components are in one Linode with 8 GB of RAM. >>> >>>>>>> >>> >>>>>>> For this experiment. I start entering the video and >>> >>>>>>> whiteboard >>> >>>>>>> room >>> >>>>>>> from my admin login from Firefox on one laptop. I allowed >>> >>>>>>> both >>> >>>>>>> video >>> >>>>>>> and microphone and the video pod was the lowest resolution. >>> >>>>>>> I >>> >>>>>>> generate >>> >>>>>>> a guest url to the room. >>> >>>>>>> >>> >>>>>>> On another laptop also on the same connection to the >>> >>>>>>> internet >>> >>>>>>> I >>> >>>>>>> enter >>> >>>>>>> the room on firefox and allow both video ( lowest >>> >>>>>>> resolution) >>> >>>>>>> and >>> >>>>>>> microphone on a new tab each time. >>> >>>>>>> >>> >>>>>>> Up to 4 guest clients load quickly and the pods are created >>> >>>>>>> almost >>> >>>>>>> immediately on all 5 tabs. On the first attempt on the 5th >>> >>>>>>> guest the >>> >>>>>>> pod for this guest on the admin laptop took a couple of >>> >>>>>>> minutes >>> >>>>>>> to load >>> >>>>>>> the video. On the 5th guest tab, the pods for guest 1, 2 >>> >>>>>>> and >>> >>>>>>> 4 >>> >>>>>>> would >>> >>>>>>> not refresh( pod frames present but no video. >>> >>>>>>> >>> >>>>>>> RAM and CPU usage was not significant on the server. >>> >>>>>>> >>> >>>>>>> I closed the tabs for all the guests and redid the >>> >>>>>>> experiment, >>> >>>>>>> The >>> >>>>>>> first 4 guests again loaded quickly without any issues. The >>> >>>>>>> 5th >>> >>>>>>> guest >>> >>>>>>> loaded to completion but took about 40 seconds for all 6 >>> >>>>>>> tabs >>> >>>>>>> to >>> >>>>>>> complete. On the 6th guest there were multiple connection >>> >>>>>>> drops >>> >>>>>>> and >>> >>>>>>> retries and the tabs were reduced to about 3 pods working, >>> >>>>>>> the >>> >>>>>>> others >>> >>>>>>> gone, this was on all tabs. >>> >>>>>>> >>> >>>>>>> So based on this it seems that up to 5 users using both >>> >>>>>>> video >>> >>>>>>> and >>> >>>>>>> microphone seem to work fine. >>> >>>>>>> >>> >>>>>>> Does this agree with anyone else's experience? I had from >>> >>>>>>> other >>> >>>>>>> posts >>> >>>>>>> that we can expect 14-15 users per kms instance. Does both >>> >>>>>>> laptop on >>> >>>>>>> the same network have any influence on this? >>> >>>>>>> >>> >>>>>>> I will try a swarm next after I gets some feedback. >>> >>>>>>> >>> >>>>>>> >>> > >>> >> >> >> -- >> Best regards, >> Maxim >> > > > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > Virus-free. > www.avg.com > <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> > <#m_-8536094403591139251_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > -- Best regards, Maxim
