According to the source code, the debug messages come from: DEBUG_MSG which calls: qCDebug(QTMIR_SURFACES).nospace()
So that sounds reasonable. It would appear at some point we will need to define QT_NO_DEBUG_OUTPUT during QtMir builds to stop excess debug messages in release binaries. Or to remove any truly excessive debug messages like those above which can appear on simple cursor movements. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1664151 Title: [performance] unity8.log flooded with debug messages about cursor position and appearance Status in Canonical System Image: New Status in qtmir package in Ubuntu: New Status in unity8 package in Ubuntu: New Bug description: [performance] qtmir.surfaces messages about cursor position and appearance flood unity8.log when dragging a window, or when moving the cursor over some apps: [2017-02-13:14:03:45.132] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(577,109)) [2017-02-13:14:03:45.140] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(580,109)) [2017-02-13:14:03:45.148] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(582,109)) [2017-02-13:14:03:45.148] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(582,107)) [2017-02-13:14:03:45.162] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(586,107)) [2017-02-13:14:03:45.164] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(588,107)) [2017-02-13:14:03:45.172] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(591,107)) [2017-02-13:14:03:45.180] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(593,107)) [2017-02-13:14:03:45.188] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(595,107)) [2017-02-13:14:03:45.196] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(597,107)) [2017-02-13:14:03:45.196] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(597,108)) [2017-02-13:14:03:45.204] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(599,108)) [2017-02-13:14:03:45.220] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(601,108)) [2017-02-13:14:03:45.279] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setRequestedPosition(QPoint(602,108)) [2017-02-13:14:03:53.564] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:53.572] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:53.604] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:53.612] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:53.620] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:53.628] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:54.916] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:54.972] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:54.988] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:55.012] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:55.044] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:55.100] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:55.156] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) [2017-02-13:14:03:55.196] qtmir.surfaces: MirSurface[0x5562bca913b0,"unity8-dash"]::setCursor(Arrow) To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1664151/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

