Randy Fishel: > I am sponsoring this case for Rafael Vanoni and Aubrey Li. It proposes > a kstat module for observing turbo mode on Intel processors. It proposes > a micro/patch binding and a commited module. I believe that this case > qualifies as a self-review, should someone request, it can be turned > into a fasttrack. > > > Template Version: @(#)sac_nextcase %I% %G% SMI > This information is Copyright 2009 Sun Microsystems > 1. Introduction > 1.1. Project/Component Working Name: > Turbo mode observability > 1.2. Name of Document Author/Supplier: > Author: Rafael Vanoni > 1.3 Date of This Document: > 12 February, 2009 > 4. Technical Description > This RFE proposes to integrate observability features for Intel's > "Turbo Mode" feature. This functionality improves system performance > by raising the operating frequency of a subset of the system's cores > when at least half of the total amount of cores are idle and there's > is thermal headroom to do so. > I think the transition is controlled by some firmware, and the OS can only read the state instead of controlling this behavior. How often does the OS read the register to refresh the kstats?
-- Best Regards, Ming. ------------------------------------------ -Edward Shu -Solaris x86 Engineering, Sun Microsystems -tele: +86-10-62673100 __________________________________________
