Just ran the same WebSocket load tests with #SiteJS on a 2 vCPU VPS with 2GB RAM and it started dropping messages (1 message/sec) at around 10K concurrent connections.
I’m more than happy with that as a starting point. (That’s not what we need to optimise. For context, I have 7.24K followers on the fediverse after 3 years. We won’t start hitting those limits on the #SmallWeb for a while.) ;)
Videos, etc., at: https://twitter.com/aral/status/1345734023658745866
Note: I posted those videos on Twitter as my Mastodon personal instance didn’t let me post them as they were too large (my instance of one is hosted on @mastohost and they have limits – which is understandable; they’re not a multi-billion-dollar company).
For longer videos, etc., I use our Vimeo account.
@aral The limits are set by Mastodon https://github.com/tootsuite/mastodon/blob/master/app/models/media_attachment.rb#L153-L157
I believe the reasoning for this is for one instance not allow 1GB video and another 5MB. Besides creating "special" instances it also would not fully federate between an instance where large videos are allowed and an instance with small videos.
This way every Mastodon instance follows the same limits (as long as the admin didn't hardcode a change to those values).
@aral Obviously, the cost of allowing concurrent streaming of large videos is high and would increase the cost for someone running a Mastodon instance.
I do think these limits make sense. Not sure if the values are ideal but there should be a small limit to make possible running a Mastodon instance on a low cost set up.
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