Re:Programmers: how to make the systems guy love you
by nailer on Monday October 18, 2010 @09:16AM
(#1803335)
An excellent list, I would add:
* Understand that disk is 300,000 times slower than memory and not an adequate substitute for it.
* Understand your VM. Particularly, if it's Java, that the JVM will eventually 'walk' the entire heap you set with -Xmx. If you have a number of VMs with massive maximum heaps, that exceeds your physical memory, you will be screwed shortly.
* Understand that disk is 300,000 times slower than memory and not an adequate substitute for it.
* Understand your VM. Particularly, if it's Java, that the JVM will eventually 'walk' the entire heap you set with -Xmx. If you have a number of VMs with massive maximum heaps, that exceeds your physical memory, you will be screwed shortly.