Hi,
On 08/14/2012 03:35 PM, nicolas prochazka wrote:
hello,
this problem is correct by update to libjpeg-turbo 1.2.1
libjepg-turbo changelog
[5] Worked around a severe performance issue with "Bobcat" (AMD Embedded APU)
34 processors. The MASKMOVDQU instruction, which was used by the libjpeg-turbo
35 SSE2 SIMD code, is apparently implemented in microcode on AMD processors, and
36 it is painfully slow on Bobcat processors in particular. Eliminating the use
37 of this instruction improved performance by an order of magnitude on Bobcat
38 processors and by a small amount (typically 5%) on AMD desktop processors.
Thanks for letting us know, that is great news! Since F-17 has libjpeg-turbo 1.2.1
available as an update, I've closed the corresponding Fedora bug:
https://bugzilla.redhat.com/show_bug.cgi?id=827381
Regards,
Hans
Regards,
Nicolas
2012/8/1 nicolas prochazka <prochazka.nicolas@xxxxxxxxx>:
hello again,
I've do these tests and I obtain the same result.
spicy gtk2 cairo backend
spicy gtk3 cairo bachend
spicy gtk2 x11 backend
Nicolas
2012/8/1 nicolas prochazka <prochazka.nicolas@xxxxxxxxx>:
hello,
I also tests with wyse Z90 which include AMD APU 52R ,
the performance are good , just limited by cpu performance.
The strange stuff seems that spicy seems to do different thing on this
hardware (log) , compare to all other harware client I've tested.
spicy runs on my own distribution based on gentoo.
Regards,
Nicolas
2012/7/31 Hans de Goede <hdegoede@xxxxxxxxxx>
Hi,
On 07/31/2012 11:11 AM, nicolas prochazka wrote:
Hello,
I'm using spice-gtk ( ver 0.12) with a lot of diferrents hardware (
cpu, network card ... ) and video streaming is often good.
But with this one ( HP t610 , with amd T56N processsor ) video
streaming is not working.
Theses tests have done in the same conditions ( same network, same
video , test with different spicy version )
This sound like exactly the same issue as this one:
https://bugzilla.redhat.com/show_bug.cgi?id=827381
It seems that there is something in the Fedora-17 xorg / gtk
stack which makes spice video performance bad on AMD brazos APU-s
Regards,
Hans
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