On 2/26/2010 12:11 PM, Dominik Zyla wrote:
On Fri, Feb 26, 2010 at 09:57:52AM -0800, John R Pierce wrote:
Dominik Zyla wrote:
But it'll not give information about temperature in server room.
actually, it sorta can. find the lowest reading sensor on the system, probably one on the mainboard... use a manual thermometer to read the intake air temp and calculate the delta.
i think you'll find under normal operating conditions that delta is pretty constant if the server is under a reasonably consistent workload.
True.. We're also doing like this in some of server rooms. But sometimes we had strange values. So this sort of stuff can be not good enough. :)
If you can get graphs from two different pieces of equipment on the same page you can pretty much see the trend. A single device might have a fan go bad or something - but that should probably be fixed anyway. On servers that have variable CPU power you might see temperature variations depending on the load.