[Spice-devel] spice-gtk client video streaming , strange stuff on different hardware

[nicolas prochazka]

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.

Regards,
Nicolas

2012/8/1 nicolas prochazka <prochazka.nicolas at gmail.com>:
> 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 at gmail.com>:
>> 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 at redhat.com>
>>>
>>> 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