Context switches per second

Hi all, On your most overloaded (cpu/fork rate/context switches - ignoring memory network, disk and swap etc), what is the maximum number of context switches per second per core (ie divide sar -w output by 16 if you have a 16 core box) you measure? Does anyone know what the maximum number of context switches per core you can expect on xeon level hardware? I'm trying to claim we get overloaded when we reach a little less than 10,000 cswch/s per second, but we've lost all the historical data. -- Tim Connors