My centos 5.7 is running Magento. 4GB RAM and 4 Cores. Nginx + spwan-fcgi + memcached (Best performance if you ask me).
Now i'm a little bit concerned about the Memory usage.
[root@adikastyle shipment]# free -m total used free shared buffers cached Mem: 3948 3712 236 0 224 **2377** -/+ buffers/cache: 1109 2839 Swap: 10975 0 10975
I've seen in few forum's this command:
# sync; echo 3 > /proc/sys/vm/drop_caches
the website is fast and handle many cur-connections.
but the cache is really strange..
Is this command is safe for production?
Does the 2377MB of cache is good ?
Do i have to change something?