Comment 130 for bug 311895
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#130 |
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bbfa235
(Get the code!)
I applied the patch to 2.6.31rc1 and first tested it with 2 GB of RAM. No noticeable difference, everything continued to work smoothly.
Now I ripped out the second GB RAM bar again, and did some stress testing: kvm -m512 (booting another Ubuntu desktop live system), running glxgears, and do some compiz juggling and VT switches. In previous versions this was a reliable way of triggering underruns quickly (which otherwise just occur after a couple of hours). I had a load of 4.3, and glxgears/compiz froze for some fractional seconds due to the high load, but I didn't get any pipe underrun.
I now continue to use the system for a couple of hours to see the longer-term effects.
What I didn't do yet is exercising the same stress test on 2.6.31 without this patch. Do you need this?