RANDOM FAIL IN EMAIL SENDING on AWS EC2
EC2 users face a weird problem some times. They observe random fails in email sending via smtp when they try to send more than 3-4 emails at a time. You can also say it in another word -
Understanding memory usage/health in linux server
Command: watch -n 5 free -m Every 5.0s: free -m Total Used Free Shared Buffers Cached Mem 3951 2690 1261 11 169 2298 -/+ buffers/cache 222 3729 Swap 0 0 0 total used free shared buffers cached Mem: