Recently I noticed some of our machines are getting sluggish, mainly after boot-up. Using the Resource Monitor I detected excessive disk access from the system process with PID 4. Following some tips, ...
I have a rather old Linux machine with 2GB of ram, no swap, and it's working very well, with the system using every unused piece of memory for caching with great effect. However, when I'm close to ...
I have a server running Ubuntu 8.04. It's a web server (mysql/php/apache2) and mail server (dovecot/postfix/spam assassin). Normally, memory usage is nominal and everything runs smoothly. Every once ...
How do I accurately observe and measure the amount of virtual memory utilization and activity on Linux? I know there is vmstat, but how do I interpret the results? Or, what is better?