<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native" href="https://bugs.freedesktop.org/show_bug.cgi?id=77436#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - KDE Konsole very slow scrolling with TearFree and QT graphics system native" href="https://bugs.freedesktop.org/show_bug.cgi?id=77436">bug 77436</a> from <a class="email" href="mailto:absorbb@gmail.com" title="Ildar Nurislamov <absorbb@gmail.com>"> Ildar Nurislamov</a> <pre>Created <a href="attachment.cgi?id=97394" name="attach_97394" title="High iowait">attachment 97394</a> <a href="attachment.cgi?id=97394&action=edit" title="High iowait">[details]</a> High iowait So i grab scroll bar and start to move it like ∞ (to exclude disk io from reading scrollback buffer) very fast. after some time it gets very laggy till display stops to redraw completely (even mouse cursor hangs) after that i can witness spike of iowait for 1 core for a moment. sometimes to 100%. it depends on window size. If Konsole size is small e.g. 869,653 - everything is fast - and i cannot reproduce problem no matter how hard i try.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>