<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [sna] Output at last pipe stays black" href="https://bugs.freedesktop.org/show_bug.cgi?id=66494#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [sna] Output at last pipe stays black" href="https://bugs.freedesktop.org/show_bug.cgi?id=66494">bug 66494</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>> (In reply to <a href="show_bug.cgi?id=66494#c3">comment #3</a>) > > Unrelated to this bug: [ 42.584] Unknown CPU cache size > > > > I use /proc/cpuinfo to query the cache size. Is that not accessible on your > > system? Can you please attach it? > > The X server runs in a chroot with a striped down /proc. I've added it now. > Does the lack of it result in any other drawbacks than lesser > optimizations/speed? It's used as a guide (amongst various other heuristics) for when it is preferrable to buffer up small operations versus writing directly into wc (slow) memory. Without knowing the cachesize, it presumes a small cache and so will do more operations inplace. It should just disable a small performance optimisation.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>