Server Broadcom updates and Cstates along with update your server patches – Segue to Xen Broadcom update
Saturday, January 05, 2013
With the goal in mind to write articles that are disjointed and break all the rules of proper writing, here is my short rant on performance issues as it relates to updates and Cstates.
There is a lot of conflicting information about weather disabling Cstates in the bios is the right thing to do to remedy performance issues. If you have never felt the pain of a performance issue then you don’t need to read this. This is for the desperate and disheartened, stressed and stretched. When all your logs and traces don’t quite get the picture and your gasping for air and a day off, for your intermittent unresponsive server, take a look at a few basic items to test.
For all those SQL servers, VDI products, and other heavy lifting applications that don’t have a reason for random locking or unresponsiveness. Ill lay it out simple:
1. Update your NIC driver and Firmware.
2. Disable Cstates.
3. Disable Power management
4. Disable turbo mode
5. Update your OS and Applications with the latest fixes and patches.
Of course this is for testing only but all you probably care about at the time you read this is that the server stops being a pain.
This was supposed to be about Xen but I expanded this idea as I have seen this help VMWARE, MS, Xen and others in multiple hardware situations, with all kinds of different applications. The resistance to keeping everything updated simply gets in the way of progress, at the detriment of many a stressed out users and Admins.