On Thursday 08 November 2007 05:56:07 Gregory Haskins wrote: > >>> On Thu, Nov 8, 2007 at 2:34 AM, in message > > <200711072334.40216.dvhltc@xxxxxxxxxx>, Darren Hart <dvhltc@xxxxxxxxxx> wrote: > > Greg, > > > > Here are the results I promised you. > > Darren, > First off, thanks a bunch for running through those tests! > > > I don't think they are particularly interesting > > They *are* interesting in the sense that peaks of 40ish for an 8-way are > excellent IMO ;) But yeah, i see what you mean; theres no interesting > difference between them. > > Do you have any comparative data from runs in -rt1 or earlier kernels? Unfortunately no. > > > perhaps more iterations, say 1000000? > > We generally load the system up a lot more (e.g. "make -j 128") or let it > run for a long time with the make in a loop (or both). For instance, here > is the last data I gathered (with plot attached). This was for a single > pass of "make mrproper; make allmodconfig; time make -j 128" I loosely based my runs off the examples here: http://rt.wiki.kernel.org/index.php/Cyclictest If there are a better set of "start here for cyclictest results" I would really like it if someone would add that to the cyclictest wiki page, complete with command line options, etc. For instance I can see you ran -t 8 below, but how many loops? with what interval? with which timer mechanism? Thanks, Darren > > 23.1-rt7 > ----------------- > real 10m49.312s > user 49m59.674s > sys 16m15.404s > > 26.38 76.02 56.11 1/304 21301 > > T: 0 ( 5959) P:90 I:100 C:7500381 Min: 2 Act: 2 Avg: 4 Max: > 78 T: 1 ( 5960) P:89 I:200 C:3750191 Min: 2 Act: 3 Avg: 5 Max: > 91 T: 2 ( 5961) P:88 I:300 C:2500127 Min: 2 Act: 3 Avg: 4 > Max: 66 T: 3 ( 5962) P:87 I:400 C:1875096 Min: 2 Act: 5 Avg: > 6 Max: 106 T: 4 ( 5963) P:86 I:500 C:1500077 Min: 2 Act: 6 > Avg: 5 Max: 92 T: 5 ( 5964) P:85 I:600 C:1250064 Min: 2 Act: > 5 Avg: 6 Max: 93 T: 6 ( 5965) P:84 I:700 C:1071483 Min: 2 > Act: 3 Avg: 6 Max: 78 T: 7 ( 5966) P:83 I:800 C: 937548 Min: > 2 Act: 5 Avg: 6 Max: 97 > > 23.1-rt10 > ----------------- > > real 10m39.046s > user 56m31.662s > sys 12m51.158s > > 7.64 63.88 62.70 1/291 30774 > > T: 0 (15455) P:90 I:100 C:8001856 Min: 2 Act: 3 Avg: 4 Max: > 65 T: 1 (15456) P:89 I:200 C:4000928 Min: 2 Act: 3 Avg: 4 Max: > 46 T: 2 (15457) P:88 I:300 C:2667286 Min: 2 Act: 3 Avg: 5 > Max: 54 T: 3 (15458) P:87 I:400 C:2000464 Min: 2 Act: 3 Avg: > 5 Max: 46 T: 4 (15459) P:86 I:500 C:1600372 Min: 2 Act: 3 > Avg: 5 Max: 46 T: 5 (15460) P:85 I:600 C:1333643 Min: 2 Act: > 5 Avg: 5 Max: 75 T: 6 (15461) P:84 I:700 C:1143123 Min: 2 > Act: 5 Avg: 6 Max: 52 T: 7 (15462) P:83 I:800 C:1000232 Min: > 2 Act: 4 Avg: 5 Max: 66 > > 23.1-rt11 > ----------------- > > real 10m41.610s > user 55m37.065s > sys 13m16.394s > > 101.92 101.56 61.65 1/308 21349 > > T: 0 ( 6028) P:90 I:100 C:6584414 Min: 2 Act: 3 Avg: 4 Max: > 55 T: 1 ( 6029) P:89 I:200 C:3292207 Min: 2 Act: 6 Avg: 5 Max: > 58 T: 2 ( 6030) P:88 I:300 C:2194805 Min: 2 Act: 5 Avg: 5 > Max: 54 T: 3 ( 6031) P:87 I:400 C:1646104 Min: 2 Act: 5 Avg: > 5 Max: 79 T: 4 ( 6032) P:86 I:500 C:1316883 Min: 2 Act: 5 > Avg: 5 Max: 60 T: 5 ( 6033) P:85 I:600 C:1097403 Min: 2 Act: > 5 Avg: 6 Max: 45 T: 6 ( 6034) P:84 I:700 C: 940631 Min: 2 > Act: 3 Avg: 6 Max: 45 T: 7 ( 6035) P:83 I:800 C: 823052 Min: > 2 Act: 5 Avg: 6 Max: 47 > > As Steven Rostedt pointed out on IRC, numbers coming from me are suspect > ;). But we can at least use them to see if you can repro similar results. > > Thanks again! > > Regards, > -Greg -- Darren Hart IBM Linux Technology Center Realtime Linux Team - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
