Monthly Archives: March 2009

Adding a new disk to a linux VM on an ESX server…

yes, sometimes this happens – you create a VM without enough disk space… here’s how you do it for a Linux guest: * In the VMWare Infrastructure client, Edit Settings -> Add (Hard Disk) * In the linux VM:   * … Continue reading →

Posted in Linux, VMWare | 2 Comments

OpenSSL Key and CSR Notes

This has come up quite a bit lately – it doesn’t have a lot to do with performance, but for whatever reason I’ve found myself doing a lot of it lately. Generate a new 1024 bit RSA server key: openssl … Continue reading →

Posted in AIX, Apache, Linux, Solaris, UNIX, WebSphere | Tagged , , , , | Comments Off

Linear Regression for system resource utilization forecasts

So… You have your performance data. you load it into a spread sheet, and you draw a line through the data points and use that to forecast when your system resources *should* expire. That’s great, but does your system performance … Continue reading →

Posted in Legacy, Linux, Models, Sizing, Tuning, UNIX | 1 Comment