Bug 453742
Summary: | DRI acceleration is slow | ||||||
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Product: | [Fedora] Fedora | Reporter: | Zdenek Kabelac <zkabelac> | ||||
Component: | mesa | Assignee: | Adam Jackson <ajax> | ||||
Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
Severity: | low | Docs Contact: | |||||
Priority: | low | ||||||
Version: | 10 | CC: | lordmorgul, mcepl, vedran, xgl-maint | ||||
Target Milestone: | --- | ||||||
Target Release: | --- | ||||||
Hardware: | All | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2009-09-21 14:24:46 UTC | Type: | --- | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Attachments: |
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Description
Zdenek Kabelac
2008-07-02 09:51:43 UTC
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue. Please attach your X server config file (/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below. Could you please also try to run without any /etc/X11/xorg.conf whatsoever and let X11 autodetect your display and video card? Attach to this bug /var/log/Xorg.0.log from this attempt as well, please. We will review this issue again once you've had a chance to attach this information. Thanks in advance. Created attachment 311241 [details]
Log from Xorg server without any xorg.conf
This log is from the Xorg server running without any configuration file - and
as this also give the same 'speed' result I guess it's enough.
I'd like to note, that even plain Xorg :0 -ac without any other fancy tool -
just glxgears - gives the same speed.
Ok - I've additional information about this problem: It looks like glxgears are 'slow' so they will not make a significant load on CPU - thus my ondemand CPU governor actually doesn't increase CPU speed. This explains why I've seen several times higher numbers with glxgears - happend with CPU load caused by ff3... So with 'perfomance' cpu governor - and my debug kernel I get ~630FPS - (this shows, that there might be some problem with data exchange between CPU & GPU and both are waitting for each other. This gives estimated 760fps with non-debug fullspeed kernel - which is still slower than F8. Those >1000fps were achieved with slightly faster C2D 2.4GHz - mine is just 2.2GHz - and with current Xorg head that machine achieves just 900fps. So there is certainly a MESA problem most probably as well. For me to be able to still use ondemand governor while having better gears speed, I have done this: echo 30>/sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold This seems to push CPU into faster Cx state under smaller load and makes glxgears to archive maximal speed. So, OK, let's blame mesa. This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle. Changing version to '10'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping *** This bug has been marked as a duplicate of bug 444328 *** |