"Your Redis network connection is performing extremely poorly"

markersocial · February 16, 2026, 7:10am

Apologies for disappearing and thank you for the responses.

I believe that the main issue for Redis being slow, was that THP was still enabled (when I had thought otherwise):

For PG crashing, the main solution for me was adding this to the app.yml:

docker_args:
  - "--shm-size=34g"

With the value set to db_shared_buffers + 2GB, with db_shared_buffers being 25% of the total host machine ram.

Overriding the default 512m:

github.com/discourse/discourse_docker

launcher

4ae1f6914


      
               if [ -z "$SKIP_MAC_ADDRESS" ] ; then
                mac_address="--mac-address $($docker_path run $user_args -i --rm -a stdout -a stderr $image /bin/sh -c "echo $hostname | md5sum | sed 's/^\(..\)\(..\)\(..\)\(..\)\(..\).*$/02:\1:\2:\3:\4:\5/'")"
               fi
          
               if [ ! -z "$START_CMD_ONLY" ] ; then
                 docker_path="true"
               fi
          
               set -x
          
               $docker_path run --shm-size=512m $links $attach_on_run $restart_policy "${env[@]}" "${labels[@]}" -h "$hostname" \
                  -e DOCKER_HOST_IP="$docker_ip" --name $config -t "${ports[@]}" $volumes $mac_address $user_args \
                  $run_image $boot_command
          
             )
             exit 0
          
          }
          
          run_run() {
            set_template_info

github.com/discourse/discourse_docker

launcher

4ae1f6914


      
          
          }
          
          run_run() {
            set_template_info
            set_volumes
            set_links
            set_run_image
          
            unset ERR
            (exec $docker_path run --rm --shm-size=512m $user_args $links "${env[@]}" -e DOCKER_HOST_IP="$docker_ip" -i -a stdin -a stdout -a stderr $volumes $run_image \
              /bin/bash -c "$run_command") || ERR=$?
          
            if [[ $ERR > 0 ]]; then
              exit 1
            fi
          }
          
          run_bootstrap() {
            set_template_info

github.com/discourse/discourse_docker

launcher

4ae1f6914


      
              pups_command="$pups_command git pull && git checkout $pups_version &&"
            fi
            pups_command="$pups_command /pups/bin/pups --stdin"
          fi
          
          echo $pups_command
          
          declare -i BOOTSTRAP_EXITCODE
          rm -f $cidbootstrap
          
          echo "$input" | $docker_path run --shm-size=512m $user_args $links "${env[@]}" -e DOCKER_HOST_IP="$docker_ip" --cidfile "$cidbootstrap" -i -a stdin -a stdout -a stderr $volumes $image \
            /bin/bash -c "$pups_command"
          BOOTSTRAP_EXITCODE=$?
          
          CONTAINER_ID=$(cat "$cidbootstrap")
          rm -f "$cidbootstrap"
          
          # magic exit code that indicates a retry
          if [[ $BOOTSTRAP_EXITCODE -eq 77 ]]; then
            $docker_path rm "$CONTAINER_ID"
            exit 77

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"Your Redis network connection is performing extremely poorly"

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