My Discourse is doing great, but I’ve been checking my logs and sometimes the connection times out. I know this is not a Discourse problem per se, and more of a Docker one, but it might be useful for newbies (like me) to know how to tune our Nginx, Docker or Discourse to avoid this. I already remov…

That’s an indication that you don’t have enough Unicorn workers for the number of requests your site is seeing. Consider increasing the UNICORN_WORKERS setting in your app.yml and rebuilding (you might need to get more RAM to accommodate the larger number of workers).

Thanks! I have 8GB of RAM, what amount of workers do you suggest? I do have other sites running it on, a few. It’s set now to the default that’s commented out: env: LANG: en_US.UTF-8 ## TODO: How many concurrent web requests are supported? ## With 2GB we recommend 3-4 workers, with 1GB only 2…

General advice is one worker per CPU core (real or logical). I would allow at least 512mb ram per worker as well, so here is hoping you have at least 512mb times the number of logical cores on your server :wink:

Thanks! Just did it. Hope it works :smiley:

Ok I just set it to 6 workers (as I have a Linode 8096: 8 GB RAM, 6 CPU Cores, 192 GB SSD Storage https://www.linode.com/pricing ) env: LANG: en_US.UTF-8 ## TODO: How many concurrent web requests are supported? ## With 2GB we recommend 3-4 workers, with 1GB only 2 UNICORN_WORKERS: 6 ## #…

[image] codinghorror: Not sure message bus polling timeouts really matter though. Message bus is used to poll for updates (e.g. new posts, threads) and update the page?

Yes but a “failure” there would never be visible to the user, and may not matter. Since the bus is always active, more messages will arrive later…

Based on your feedback I added a line to clarify that Unicorns should scale with CPU cores, when possible ## TODO: How many concurrent web requests are supported? ## With 2GB we recommend 3-4 workers, with 1GB only 2 ## If you have lots of memory, use one or two workers per logical CPU core #UNICOR…

(This is an old topic, but it still seems like where this belongs) [image] codinghorror: one worker per CPU core (real or logical). I would allow at least 512mb ram per worker So the “ram per worker” is db_work_mem? That seems right, but the comments there don’t seem to say what you said abo…

How to avoid upstream timeouts?

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codinghorror (Jeff Atwood) November 12, 2015, 7:09am 7

Make sure you have upped database ram in app.yml. Other than that and adjusting number of unicorn workers, that’s about all I can think of. Not sure message bus polling timeouts really matter though.

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How to avoid upstream timeouts?

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