"Your Redis network connection is performing extremely poorly"

[markersocial]

I am consistently getting this in the logs - with values between ~100k to ~1.35m - but the readings near 100k seem to be quite common:

Your Redis network connection is performing extremely poorly. Last RTT readings were [97069, 103986, 98459, 100762, 381617], ideally these should be < 1000. Ensure Redis is running in the same AZ or datacenter as Sidekiq. If these values are close to 100,000, that means your Sidekiq process may be CPU-saturated; reduce your concurrency and/or see https://github.com/mperham/sidekiq/discussions/5039

This indicates that perhaps Redis isn’t able to use enough CPU? There seems to be plenty of breathing room for CPU and ram on the server itself though.

also:
Sidekiq is consuming too much memory (using: 3570.19M) for 'www.example.com', restarting

This is using the all in one app.yml with Discourse stable 3.3.2.

From the app.yml:

UNICORN_SIDEKIQS: 9
DISCOURSE_SIDEKIQ_WORKERS: 5

I added this configuration to the host also:

@mcdanlj

Kernel configuration

Redis (one of the key components on which Discourse is built) strongly recommends disabling transparent huge pages when using on-disk persistence (which Discourse does), and I also allow memory overcommit.

echo 'sys.kernel.mm.transparent_hugepage.enabled=never' > /etc/sysctl.d/10-huge-pages.conf
echo 'vm.overcommit_memory=1' > /etc/sysctl.d/90-vm_overcommit_memory.conf
sysctl --system

Sidekiq dashboard info:

It does seem like Redis is not able to surpass 1024M memory usage.

If anyone has any ideas, I’d appreciate it!