Prog on ubuntu to monitor peak memory loads?

Question

ubuntu

There is: Ubuntu Lucid Lynx 32, apache, mysql and periodically popping out of all holes out of memory (and this is on the cloud, where, in general, this should not be), which I learn about after the fact from Apache and muscle logs.
Objective: To trace what kind of infection eats up memory so hard.
The question is, how can this be done?

Answer 1

atop

Answer 2

htop

Answer 3

Well, then you need to install a monitoring tool, with scheduling, for example, I use Zabbix in the infrastructure - it can warn by mail or by Jabber / SMS what is wrong. True, you will also have to spend time studying it. And bursts can be done simply: a
script like:
#!/bin/bash
{
date
ps uax
echo
} >> /var/log/memory.log
And put in kroner for every minute, for example. A lot of logs will be generated. But it will allow you to make an analysis - who, how much and when ate and what resources.

Answer 4

Look here:
habrahabr.ru/blogs/linux/71020/
habrahabr.ru/blogs/linux/49204/