Debug unstable Apache server under Debian
- by almo
Since yesterday my Apache server that runs on a Debian machine runs very unstable. Sometiems my websites load and sometimes not. I think it has to do with the memory since my Apache log is full of Out of memory (allocated 262144) (tried to allocate 4480 bytes). I also attached a screenshot of the memory graph.
A server restart resolves the problem temporarily. I looked at the processes that are using memory but the biggest one is MySQL with 6.5%.
Where else can look for the problem?
Edit: I did a free -m right after rebooting and one about 2 hours later. I think the trend is visible:
root@xxx:~# free -m
total used free shared buffers cached
Mem: 4016 731 3284 0 80 200
-/+ buffers/cache: 449 3566
Swap: 459 0 459
root@xxx:~# free -m
total used free shared buffers cached
Mem: 4016 2466 1550 0 92 473
-/+ buffers/cache: 1900 2115
Swap: 459 0 459
