From mboxrd@z Thu Jan 1 00:00:00 1970 From: Boszormenyi Zoltan Subject: Re: DPM on Radeon HD6570 Date: Wed, 21 Aug 2013 21:05:13 +0200 Message-ID: <52150F69.3060309@pr.hu> References: <5214CF45.40407@pr.hu> <5214FDC1.8010400@pr.hu> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail.cybertec.at (unknown [87.118.86.135]) by gabe.freedesktop.org (Postfix) with ESMTP id 138E0E61AE for ; Wed, 21 Aug 2013 12:05:16 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Alex Deucher Cc: Maling list - DRI developers List-Id: dri-devel@lists.freedesktop.org 2013-08-21 19:55 keltez=E9ssel, Alex Deucher =EDrta: > On Wed, Aug 21, 2013 at 1:49 PM, Boszormenyi Zoltan wrote: >> Hi, >> >> thanks for your response. >> >> 2013-08-21 17:39 keltez=E9ssel, Alex Deucher =EDrta: >> >>> On Wed, Aug 21, 2013 at 10:31 AM, Boszormenyi Zoltan >>> wrote: >>>> Hi, >>>> >>>> I read this Phoronix article: >>>> http://www.phoronix.com/scan.php?page=3Darticle&item=3Damd_hd6000_dpm&= num=3D1 >>>> >>>> Congrats to the progress achieved so far. >>>> >>>> However, I can see an interesting deviation for HD6570 from the >>>> observed trend of other chips. >>>> >>>> r600g can reach 80+ percent of the performance of Catalyst >>>> for most HD6xxx chips except for 6570, where the performance >>>> is around 10-20 percent. >>>> >>>> Do you have a theory about this difference? >>>> Maybe DPM doesn't work as intended on HD6570? >>>> >>> Are you seeing the same results on your board? If so are the results >>> roughly the same with dpm enabled vs. disabled? If so I doubt there >>> is a problem with dpm. On older dGPUs like this one dpm won't really >>> improve performance since the cards come up with relatively high >>> clocks by default. It's mainly for saving power when the GPU is idle. >> I have enabled dpm: >> $ cat /proc/cmdline >> BOOT_IMAGE=3D/vmlinuz-3.11.0-0.rc6.git0.1.fc20.x86_64 >> root=3DUUID=3D00df37a2-be3d-46fe-963a-ca08977fc5f6 ro quiet rhgb radeon.= audio=3D1 >> radeon.dpm=3D1 LANG=3Dhu_HU.UTF-8 >> >> I have just tried "openarena 0.8.5" again with forced "low" performance. >> Results is 26.87fps with low performance, 59.40-59.70fps with forced high >> performance. >> > Sounds like you are refresh rate limited. Try disabling > swapbufferswait in your xorg.conf: > > Section "Device" > Identifier "card0" > Driver "iradeon" > Option "SwapbuffersWait" "false" > EndSection > > and disable vsync in the 3D driver, set env var: > vblank_mode=3D0 vblank_mode was already 0 before: [zozo@localhost ~]$ cat .drirc I have added this: [root@localhost xorg.conf.d]# pwd /etc/X11/xorg.conf.d [root@localhost xorg.conf.d]# cat 99-vblank.conf Section "Device" Identifier "card0" Driver "radeon" Option "SwapbuffersWait" "false" EndSection With forced high performance, I got 118.73 fps. Wow. :-) > Also what does the performance look like with dpm disabled? Same as forced high with dpm enabled. > Anyway, it doesn't sound like dpm is an issue. Indeed, dpm works as intended. Something was misconfigured at Phoronix then. Thanks for resolving this for me, Zolt=E1n B=F6sz=F6rm=E9nyi > > Alex > >>>> I have this kind of video card, so I wanted to test it myself. >>>> The exact model of my card is: >>>> >>>> http://www.sapphiretech.com/presentation/product/?cid=3D1&gid=3D3&sgid= =3D1087&pid=3D1176&psn=3D&lid=3D1&leg=3D0# >>>> >>> Note that a lot of 6570 cards, including yours use DD3 memory rather >>> than GDDR5 so they will have fairly limited memory bandwidth. >> I know. The 6570 tested by Phoronix must be GDDR5 >> but it's not mentioned specifically. >> >> Best regards, >> Zolt=E1n B=F6sz=F6rm=E9nyi >> >> >>> Alex >>> >>>> I have installed kernel 3.11-rc6 on Fedora 19 using this koji kernel: >>>> http://koji.fedoraproject.org/koji/buildinfo?buildID=3D457463 >>>> >>>> I haven't tested Catalyst but my r600g results mostly match >>>> the ones in the article even with a different CPU. >>>> >>>> Best regards, >>>> Zolt=E1n B=F6sz=F6rm=E9nyi >>>> >>>> _______________________________________________ >>>> dri-devel mailing list >>>> dri-devel@lists.freedesktop.org >>>> http://lists.freedesktop.org/mailman/listinfo/dri-devel