Output the worst SLOWLOG entry from each Redis instance on a server, in descending order from slowest to fastest.

slowlog_all.sh

#!/bin/bash

# Example output:
# ~$ ./slowlog_all.sh
# 1779.2 ms /etc/redis/reports.conf
# 65.934 ms /etc/redis/actions.conf

for file in $(ls -1 /etc/redis/*.conf); do
  name=$(basename $file);
  port=$(awk '/^port/ {print $2}' $file);
  redis-cli -p $port slowlog get 1 2>/dev/null | head -n4 | xargs -n4 echo | awk '{printf $3/1000 " ms "}';
  echo $file;
done | sort -rn