Nicholas Tang wrote a nice little perl script that shows a basic memcached top display for a list of servers. You can specify thresholds, for instance, and it’ll change color to red if you exceed the thresholds. You can also choose the refresh/sleep time, and whether to show immediate (per second) stats, or lifetime stats.
To install it you only need to download the script and make it executable:
$ curl http://memcache-top.googlecode.com/files/memcache-top-v0.6 > ~/bin/memcache-top $ chmod +x ~/bin/memcache-top $ memcache-top --sleep 3 --instances 10.50.11.3,10.50.11.4,10.50.11.5
Here’s some sample output:
memcache-top v0.6 (default port: 11211, color: on, refresh: 3 seconds) INSTANCE USAGE HIT % CONN TIME EVICT/s GETS/s READ/s WRITE/s 10.50.11.3:11211 88.9% 69.7% 1661 0.9ms 0.3 47 13.9K 9.8K 10.50.11.4:11211 88.8% 69.9% 2121 0.7ms 1.3 168 17.6K 68.9K 10.50.11.5:11211 88.9% 69.4% 1527 0.7ms 1.7 48 14.4K 13.6K AVERAGE: 84.7% 72.9% 1704 1.0ms 1.3 69 13.5K 30.3K TOTAL: 19.9GB/ 23.4GB 20.0K 11.7ms 15.3 826 162.6K 363.6K (ctrl-c to quit.)
Project Home
http://code.google.com/p/memcache-top/
Federico Cargnelutti 
4 responses to “Command-line memcached stat reporter”
Did you copy/paste the output without editing? If so, something’s wrong… the averages don’t seem to be computed correctly. Whoops. :)
I removed a couple of servers from the list :) Very handy script BTW, thanks!
geek porn ;-)
If you get an HiRes error when running you might want to install:
sudo yum install perl-Time-HiRes