On Tuesday 01 May 2007 05:29, Bill Davidsen wrote: > System: Intel 6600 Core2duo, 2GB RAM, X nice 0 for all tests, display > using i945G framebuffer
Bill thanks for testing. > > Test: playing a 'toon with mplayer while kernel build -j20 running. Umm I don't think make -j20 is a realistic load on 2 cores. Not only does it raise your load to 20 but your I/O bandwidth will even be struggling. If video playback was to be smooth at that size a load it would suggest some serious unfairness. I'm not just pushing the fairness barrow here; I mean it would need to be really really unfair unless your combined X and video playback cpu combined added up to less than 1/20th of your total cpu power (which is possible but I kinda doubt it). Do you really use make -j20 to build regularly? > Tuning: not yet, all scheduler parameters were default > > Result: base 2.6.21 showed some pauses and after the pause the sound got > louder for a short time (<500ms). With sd-0.46 the playback had many > glitches and finally just stopped with the display looping on a small > number of frames and no sound. The skips were repeatable, the hang was > only two of five runs, I didn't let them go until the make finished > (todo list) but killed the mplayer after 10-15 sec. No glitches observed > with cfsv7, I thought I saw one but repeating with granularity set to > 500000 and then with no make running convinced me that it's just a > crappy piece of animation at that point. I did notice on your followup email that nice +10 of the 20 makes fixed the playback which sounds pretty good. > I ran glxgears, again sd-0.46 had frequent pauses and uneven fps > reported. Stock 2.6.21 had a visible pause when the frame rate was > output, otherwise minimal pauses. CFSv7 appeared smooth at about 250 fps. I assume you mean glxgears when you're running make -j20 again here. > All tests gave acceptable typing echo, it seems that X is getting enough > time at that load to echo without major issues. That's nice; shows stability under load. > I will be doing tests with server load later this week, have to add disk > for the database. Great. > Hope this initial report is useful, I may be able to update ctxbench > later today and try that. Also good. -- -ck - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
