<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [BAT SNB BSW HSW] basic-flip-vs-wf_vblank timestamp vs. seq counter difference" href="https://bugs.freedesktop.org/show_bug.cgi?id=94294#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [BAT SNB BSW HSW] basic-flip-vs-wf_vblank timestamp vs. seq counter difference" href="https://bugs.freedesktop.org/show_bug.cgi?id=94294">bug 94294</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>Potentially related; sometimes [1] we get the same off by one seq vs .ts issue, except with seq_step==1. Not sure if there's some bug in the test or maybe seq_step doesn't always indicate the length of the wait? (kms_flip:6763) DEBUG: name = flip last_ts = 333.745977 usec last_received_ts = 333.745522 usec last_seq = 1706 current_ts = 333.929216 usec current_received_ts = 333.929426 usec current_seq = 1716 count = 51 seq_step = 1 (kms_flip:6763) CRITICAL: Test assertion failure function check_state, file kms_flip.c:692: (kms_flip:6763) CRITICAL: Failed assertion: fabs((((double) diff.tv_usec) - usec_interflip) / usec_interflip) <= 0.005 (kms_flip:6763) CRITICAL: Last errno: 25, Inappropriate ioctl for device (kms_flip:6763) CRITICAL: inter-flip ts jitter: 0s, 183239usec **** END **** [1] /archive/results/CI_IGT_test/Patchwork_1530/</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 assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>