<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [BDW Bisected] OglDrvCtx performance reduced by ~30% after use true PPGTT in Gen8+" href="https://bugs.freedesktop.org/show_bug.cgi?id=87726#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [BDW Bisected] OglDrvCtx performance reduced by ~30% after use true PPGTT in Gen8+" href="https://bugs.freedesktop.org/show_bug.cgi?id=87726">bug 87726</a> from <a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> Eero Tamminen</a> <pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=87726#c7">comment #7</a>) > There are a number of patches to address this, with review outstanding. The > regression here is due to the large number of context and list entries > generated by OglDrvCtx. The patches try to compensate by making context > creation quicker (the goal of that particular microbenchmark) and introduce > hashtables to avoid the linear list walks. Note: we stopped tracking that (SynMark v6.0) test last year when switching to SynMark v7.0 which didn't anymore include it. For perf test it had unreasonable amount of variance and it was acting more like a functional test-case for kernel & compositor (particularly Unity/compiz), bugs that would IMHO be better tracked by a specific, functional test-cases e.g. in IGT.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>