i'm wondering is there a way(or standard) to measure that memcached
server in OVERLOAD or not?
if it's in OVERLOAD status. what can i do ? just add more memcached
servers and add more RAM usage?
any tips are appreciated. thank you all!!!
You should upgrade to 1.2.5. The version you are running (1.2.0) doesn't
support eviction tracking.
You need to monitor a few things:
'evictions' - which will happen if all of your items do not have an
expire time, _or_ you are storing too many new items and they don't get
expired fast enough.
- The actual CPU usage on the box. If it's pegged, you're dead.
- If you're swapping. Just disable swap or something...
- If something else on the box is contending for cpu.
- If your network/switch/uplinks are pegged.
Otherwise memcached will happily chew up all of your box's resources.
-Dormando
