[Bug 77436] KDE Konsole very slow scrolling with TearFree and QT graphics system native

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77436

--- Comment #144 from Ildar Nurislamov <absorbb at gmail.com> ---
Bare X + NoTearFree:
120000000 trep @   0.0002 msec (4080000.0/sec): Char in 80-char aa line
(Charter 10)
32000000 trep @   0.0009 msec (1100000.0/sec): Char in 30-char aa line (Charter
24)
120000000 trep @   0.0002 msec (4080000.0/sec): Char in 80-char rgb line
(Charter 10)
32000000 trep @   0.0009 msec (1100000.0/sec): Char in 30-char rgb line
(Charter 24)

Bare X + TearFree:
120000000 trep @   0.0002 msec (4040000.0/sec): Char in 80-char aa line
(Charter 10)
32000000 trep @   0.0009 msec (1100000.0/sec): Char in 30-char aa line (Charter
24)
120000000 trep @   0.0002 msec (4040000.0/sec): Char in 80-char rgb line
(Charter 10)
32000000 trep @   0.0009 msec (1100000.0/sec): Char in 30-char rgb line
(Charter 24)

KDE + TearFree + Kwin OpenGL Vsync:
120000000 trep @   0.0002 msec (4130000.0/sec): Char in 80-char aa line
(Charter 10)
32000000 trep @   0.0009 msec (1110000.0/sec): Char in 30-char aa line (Charter
24)
120000000 trep @   0.0002 msec (4130000.0/sec): Char in 80-char rgb line
(Charter 10)
32000000 trep @   0.0009 msec (1110000.0/sec): Char in 30-char rgb line
(Charter 24)

My CPU is Core™ i5-3450. ivb too. Intel® HD Graphics 2500.
And our results are nothing alike.

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