Error comments on Programming the LW Study Hall - Less Wrong

31 Post author: ShannonFriedman 15 March 2013 06:28PM

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Comment author: Error 14 March 2013 01:54:06PM 3 points [-]

I've dropped in on a couple of these and found them quite worthwhile. One thing I did notice: People were using webcams but not voicecomm, even though tinychat supports it. I'm not sure if that's an intentional norm or not. Given the brevity of the breaks it may not matter much.

As far as looking for developers...I have no javascript experience (I do Python and C mostly), but I'm a fairly competent programmer and I would be willing to step up if no one else better-qualified does. A good programmer can pick up any language they need to. I'll mail you with some evidence that I don't entirely suck at this.

Also, I'm a sysadmin IRL and have a couple servers lying around. If we go with OpenMeetings and have need of a server, that may be of use.

Comment author: BerryPick6 14 March 2013 03:11:17PM 2 points [-]

People were using webcams but not voicecomm, even though tinychat supports it. I'm not sure if that's an intentional norm or not.

I'm pretty sure it's intentional. Chatting is just less disruptive when it's only text-based.

If we go with OpenMeetings and have need of a server, that may be of use.

We tried out mqrius' server and encountered a few difficulties, but I have no idea what was causing them, so it could just be that OM is a bit shaky.

Comment author: Mqrius 15 March 2013 10:15:58AM *  2 points [-]

We tried out mqrius' server and encountered a few difficulties, but I have no idea what was causing them, so it could just be that OM is a bit shaky.

I poked around a bit more.
Basically, I got "java.lang.OutOfMemoryError: PermGen space", so I figured it was a lack of allocated memory and increased the allocated heap space (Xmx and Xms). However, I did some further googling, and apparently the PermGen space is separate from the heap space. If it goes out of memory, it might be caused by either a normal process, or by a memory leak. It might be solved by having java unload its classes. I'm running it with the following flags at the moment:

-Xmx1024m -Xms128m -Xmn512m -Xss512k -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC -XX:MaxPermSize=128m

Since I now applied a fix that might be specific to the problem, it warrants giving it another test.

But honestly, ideally, I should not be the one to test OpenMeetings: I don't have enough knowledge to judge if I'm doing things wrong or if OpenMeetings is. The "fixes" I try are just suggested by random googling, not by careful consideration.

Comment author: Mqrius 15 March 2013 01:45:30PM 1 point [-]

It's working quite well. It's been going all morning without any issues.

Comment author: Error 14 March 2013 03:54:56PM 2 points [-]

I'm pretty sure it's intentional. Chatting is just less disruptive when it's only text-based.

I meant during the breaks (when presumably disruption is allowed) but yes, good point.

Comment author: ShannonFriedman 14 March 2013 11:58:17PM 1 point [-]

Awesome, I'll be in touch shortly. We've had a couple of volunteers so far, so I'm giving it a little time for responses to filter in and then will start organizing.

Comment author: ShannonFriedman 16 March 2013 05:55:57AM 0 points [-]

Okay, sent you a message with the calendar link to schedule a call to discuss.