* [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels
@ 2011-02-17 9:12 bugzilla-daemon
2012-11-02 16:37 ` [Bug 34377] " bugzilla-daemon
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: bugzilla-daemon @ 2011-02-17 9:12 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=34377
Summary: Radeon driver PCIe throughput not up to PCIe2.0 levels
Product: Mesa
Version: git
Platform: x86 (IA32)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/R600
AssignedTo: dri-devel@lists.freedesktop.org
ReportedBy: lucvermoesen@gmail.com
Created an attachment (id=43476)
--> (https://bugs.freedesktop.org/attachment.cgi?id=43476)
test data and test program for PCIe gen2 issue
On an HD5450 card, when I load the latest gallium3D driver with kernel
2.6.38-rc4 and firmware I got from
http://people.freedesktop.org/~agd5f/radeon_ucode/ , this together with the
latest git checkouts for X and modules (and thus also xf86-video-ati) and
latest mesa git checkout that has been built with –enable-gallium-r600
installing the radeon kernel module with
modprobe radeon modeset=1 pcie_gen2=1
Then I get 0.5GB/s CPU->GPU
From GPU -> CPU, I get about the same 0.5GB/s.
When I load the fglrx ati proprietary driver (11.1) for the 5450 card, then I
get throughputs of about 2GB/s in both directions.
Running the same test in same environment on the HD5970
with the gallium drivers and kernel mode setting and pcie_gen2 activation, i
get about the same figures as above.
With fglrx for 5970, then 5970 only performs well in CPU->GPU with about 2GB/s
and only 0.5GB/s in GPU->CPU direction
I have included the test and configuration output for both cases (fglrx and
radeon) and also code for the testprogram might you want to reproduce this
case.
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* [Bug 34377] Radeon driver PCIe throughput not up to PCIe2.0 levels
2011-02-17 9:12 [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels bugzilla-daemon
@ 2012-11-02 16:37 ` bugzilla-daemon
2013-05-12 7:38 ` bugzilla-daemon
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2012-11-02 16:37 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=34377
Andreas Boll <andreas.boll.dev@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #1 from Andreas Boll <andreas.boll.dev@gmail.com> ---
Note: classic r600 driver has been abandoned.
Please use r600g (gallium driver) instead.
Is this still an issue with a newer driver/kernel?
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* [Bug 34377] Radeon driver PCIe throughput not up to PCIe2.0 levels
2011-02-17 9:12 [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels bugzilla-daemon
2012-11-02 16:37 ` [Bug 34377] " bugzilla-daemon
@ 2013-05-12 7:38 ` bugzilla-daemon
2013-05-12 7:42 ` bugzilla-daemon
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-05-12 7:38 UTC (permalink / raw)
To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=34377
--- Comment #2 from commiethebeastie@gmail.com ---
It`s all OK, you video card is very limited by GPU perfomance.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 34377] Radeon driver PCIe throughput not up to PCIe2.0 levels
2011-02-17 9:12 [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels bugzilla-daemon
2012-11-02 16:37 ` [Bug 34377] " bugzilla-daemon
2013-05-12 7:38 ` bugzilla-daemon
@ 2013-05-12 7:42 ` bugzilla-daemon
2013-05-12 14:03 ` bugzilla-daemon
2014-07-07 16:04 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-05-12 7:42 UTC (permalink / raw)
To: dri-devel
[-- Attachment #1.1: Type: text/plain, Size: 211 bytes --]
https://bugs.freedesktop.org/show_bug.cgi?id=34377
--- Comment #3 from commiethebeastie@gmail.com ---
2011-02-17 01:12:43 UTC
Ohhh~
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* [Bug 34377] Radeon driver PCIe throughput not up to PCIe2.0 levels
2011-02-17 9:12 [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels bugzilla-daemon
` (2 preceding siblings ...)
2013-05-12 7:42 ` bugzilla-daemon
@ 2013-05-12 14:03 ` bugzilla-daemon
2014-07-07 16:04 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-05-12 14:03 UTC (permalink / raw)
To: dri-devel
[-- Attachment #1.1: Type: text/plain, Size: 473 bytes --]
https://bugs.freedesktop.org/show_bug.cgi?id=34377
--- Comment #4 from Alex Deucher <agd5f@yahoo.com> ---
pcie 2 mode has been enabled by default for a while now. Also, most recent
motherboards bring up the card in pcie 2 mode by default. HD5450 cards tend to
have slower ddr3 vram rather than the faster gddr5 as higher end cards do. Is
this still an issue with a more recent kernel and mesa?
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug 34377] Radeon driver PCIe throughput not up to PCIe2.0 levels
2011-02-17 9:12 [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels bugzilla-daemon
` (3 preceding siblings ...)
2013-05-12 14:03 ` bugzilla-daemon
@ 2014-07-07 16:04 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2014-07-07 16:04 UTC (permalink / raw)
To: dri-devel
[-- Attachment #1.1: Type: text/plain, Size: 697 bytes --]
https://bugs.freedesktop.org/show_bug.cgi?id=34377
Andreas Boll <andreas.boll.dev@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |RESOLVED
Resolution|--- |WONTFIX
--- Comment #5 from Andreas Boll <andreas.boll.dev@gmail.com> ---
The classic r600 driver has been abandoned long ago.
It was replaced by the Gallium driver r600g.
If you have issues with r600g please file a new bug report with component
Drivers/Gallium/r600
Thanks.
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2011-02-17 9:12 [Bug 34377] New: Radeon driver PCIe throughput not up to PCIe2.0 levels bugzilla-daemon
2012-11-02 16:37 ` [Bug 34377] " bugzilla-daemon
2013-05-12 7:38 ` bugzilla-daemon
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