>> On Tue, 2012-06-19 at 08:50 -0700, Doug Smythies wrote: > On 2012.06.20 02:45 -0700, Peter Zijlstra wrote: >> My automated 63 hour test has been terminated, the code changed >> and the test re-started. > There's another boo-boo in there: O.K. I let the automated test finish the 3 processes stuff (which is 1/2 way). The newly compiled code is now running, but I only resumed the test, I did not re-start it. A comparative graph of the 1 & 2 process results is attached. (the previous version of this same graph was on another thread). Legend: Control: older kernel compiled with CONFIG_NO_HZ=no c308: Kernel with the earlier commit 5aaa: Basically, Kernel 3.5 RC2 Wang: Charles Wang's first proposed solution. Peter35: Peter Zijlstra's current proposed solution. Summary: Extremely good.