<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [BDW]90% CPU usage at on one of the CPU cores when run Synmark2_v5_3_0_OglDrvCtx" href="https://bugs.freedesktop.org/show_bug.cgi?id=80784#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [BDW]90% CPU usage at on one of the CPU cores when run Synmark2_v5_3_0_OglDrvCtx" href="https://bugs.freedesktop.org/show_bug.cgi?id=80784">bug 80784</a> from <a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> Eero Tamminen</a> <pre>The bug here isn't CPU utilization, but BDW performance compared to HSW. DrvCtx tests mainly GL context (re-)creation speed, so large CPU usage and test being CPU bound is *expected*. CPU utilization just provides clue what could be the cause for bad performance. Mengmeng, if the CPU utilization is 90% on BDW, is it lower or higher on HSW (when you use same GPU & CPU speed for both)? If CPU utilization on BDW is higher, issue is on CPU side, if it's lower on BDW, issue is GPU side.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>