Since updating to latest yesterday I’ve been seeing this error in the logs constantly. My server has 8gb of ram and only 60% used. I tried running discourse-setup to reset my settings, which gave me this: setting db_shared_buffers = 2048MB setting UNICORN_WORKERS = 4 Logs: Message (781 copies reported) Sidekiq is consuming too much memory (using: 510.87M) for 'community.naturephotographers.network', restarting Backtrace config/unicorn.conf.rb:164:in `check_sidekiq_heartbeat' config/unicorn.conf.rb:244:in `master_sleep' /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/unicorn-6.1.0/lib/unicorn/http_server.rb:295:in `join' /var/www/discourse/vendor/bundle/ruby/3.2.0/gems/unicorn-6.1.0/bin/unicorn:128:in ` ' /var/www/discourse/vendor/bundle/ruby/3.2.0/bin/unicorn:25:in `load' /var/www/discourse/vendor/bundle/ruby/3.2.0/bin/unicorn:25:in ` ' Any ideas what may be going on here?

Increase the Sidekiq memory fixed it for me. [image] Sidekiq is consuming too much memory, restarting Self-hosting Also, if your server has enough total RAM, you can increase the memory allocation for Sidekiq. Place this in the env: section of app.yml: UNICORN_SIDEKIQ_MAX_RSS: 1000 The default maximum is, I believe, 500mb.

That seems to have done the trick, thank you Don!

Is this a case of “not enough headroom” or do we think this is a memory leak of some kind? If the latter then surely this error will pop up anyway and increasing the memory allocated will just reduce the error frequency …

FWIW I still haven’t seen the error and my memory usage went up about 400 MB after changing this setting.

I’m a wondering this: [image]Sidekiq is consuming too much memory, restarting on mega busy multisites you need to adjust UNICORN_SIDEKIQ_MAX_RSS I get same error ( or should it count more as informative?) and mine is not multisite nor busy. Is achitecture changed over the times and we are near old topic do we need more menory than told?

This warning appeared in my /logs after I actived YJIT but there is a note it is increase memory usage. However I think it can also happen busy sites with lots of activity or busy shared servers with shared memory etc… [image]Running Ruby 3.2's YJIT in Production at Discourse Please note that we have opted not to enable YJIT for self-hosted instances as a default due to the increase in memory usage. Self-hosters enabling YJIT should monitor memory usage to ensure that your servers can handle the additional memory requirements.

the Sidekiq dashboard appears to show memory use for Redis, shame it doesn’t do the same for Sidekiq itself?: [image]

Just a little update here, since making the change my memory usage jumped from around 60% to 80% (8 GB) and holding steady. I haven’t seen another error in the logs and some other issues have cleared up as well. [image]

Sidekiq is consuming too much memory

Product Support Self-hosting

merefield (Robert) October 3, 2023, 7:54pm 3

If it’s any consolation I get this too, fairly regularly.

I’ll investigate @Don’s suggestion. I did wonder! Now I know!

Topic		Replies	Views
Sidekiq is consuming too much memory even with UNICORN_SIDEKIQ_MAX_RSS adjusted Self-hosting server-resources	6	916	October 9, 2025
Sidekiq is consuming too much memory (using: 522.12M)..., restarting Product Support sidekiq	3	346	October 15, 2025
Sidekiq warnings Product Support sidekiq	6	408	July 17, 2025
Sidekiq is consuming too much memory, restarting Self-hosting	38	9548	October 13, 2020
Redis used_memory limited to 1024mb? Product Support	2	275	February 16, 2026

Sidekiq is consuming too much memory

Related topics