Re: merge of real-time 2.6.33.9-rt31 with stable 2.6.33.13

From: John Kacur
Date: Wed May 18 2011 - 03:52:54 EST


On Sat, May 14, 2011 at 5:59 PM, John Kacur <jkacur@xxxxxxxxxx> wrote:
>
> Hi Thomas
>
> I did some light testing merging 2.6.33.13 into real-time 2.6.33.9-rt31.
> In addition I cherry-picked 3c955b407a084810f57260d61548cc92c14bc627
> in order to compile on newer distros.
>
> Please consider picking this up. You can get it from
> git://git.kernel.org/pub/scm/linux/kernel/git/jkacur/jk-2.6.git rt/2.6.33
>
> Thanks
>
> John Kacur
>
> Here is the result of cyclic test on one machine
> sudo ./cyclictest -t32 -p 80 -n -i 10000 -l 10000
> policy: fifo: loadavg: 0.00 0.00 0.00 1/541 3759
>
> T: 0 ( 3728) P:80 I:10000 C:  10000 Min:      7 Act:  104 Avg:  114 Max:     470
> T: 1 ( 3729) P:79 I:10500 C:   9524 Min:      4 Act:   93 Avg:  105 Max:     417
> T: 2 ( 3730) P:78 I:11000 C:   9091 Min:      4 Act:  114 Avg:  125 Max:     420
> T: 3 ( 3731) P:77 I:11500 C:   8696 Min:      4 Act:   58 Avg:   91 Max:     387
> T: 4 ( 3732) P:76 I:12000 C:   8333 Min:      4 Act:   84 Avg:  114 Max:     425
> T: 5 ( 3733) P:75 I:12500 C:   8000 Min:      4 Act:  133 Avg:  112 Max:     385
> T: 6 ( 3734) P:74 I:13000 C:   7692 Min:      3 Act:    8 Avg:   65 Max:     377
> T: 7 ( 3735) P:73 I:13500 C:   7407 Min:      3 Act:   91 Avg:   71 Max:     358
> T: 8 ( 3736) P:72 I:14000 C:   7143 Min:      4 Act:   78 Avg:   98 Max:     323
> T: 9 ( 3737) P:71 I:14500 C:   6897 Min:      7 Act:  133 Avg:  109 Max:     300
> T:10 ( 3738) P:70 I:15000 C:   6667 Min:      5 Act:  115 Avg:   98 Max:     314
> T:11 ( 3739) P:69 I:15500 C:   6452 Min:      3 Act:    6 Avg:   79 Max:     280
> T:12 ( 3740) P:68 I:16000 C:   6250 Min:      3 Act:   68 Avg:   80 Max:     317
> T:13 ( 3741) P:67 I:16500 C:   6061 Min:      4 Act:  142 Avg:   82 Max:     255
> T:14 ( 3742) P:66 I:17000 C:   5882 Min:      4 Act:  132 Avg:  102 Max:     253
> T:15 ( 3743) P:65 I:17500 C:   5714 Min:      4 Act:  135 Avg:  111 Max:     342
> T:16 ( 3744) P:64 I:18000 C:   5556 Min:      4 Act:   16 Avg:   37 Max:     315
> T:17 ( 3745) P:63 I:18500 C:   5405 Min:      3 Act:   12 Avg:   53 Max:     322
> T:18 ( 3746) P:62 I:19000 C:   5263 Min:      3 Act:   62 Avg:   37 Max:     250
> T:19 ( 3747) P:61 I:19500 C:   5128 Min:      3 Act:   65 Avg:   35 Max:     276
> T:20 ( 3748) P:60 I:20000 C:   5000 Min:      3 Act:  180 Avg:   81 Max:     295
> T:21 ( 3749) P:59 I:20500 C:   4878 Min:      3 Act:   76 Avg:   45 Max:     314
> T:22 ( 3750) P:58 I:21000 C:   4762 Min:      3 Act:  133 Avg:   38 Max:     265
> T:23 ( 3751) P:57 I:21500 C:   4651 Min:      3 Act:  132 Avg:   71 Max:     300
> T:24 ( 3752) P:56 I:22000 C:   4546 Min:      3 Act:    6 Avg:   57 Max:     227
> T:25 ( 3753) P:55 I:22500 C:   4445 Min:      3 Act:   72 Avg:   50 Max:     258
> T:26 ( 3754) P:54 I:23000 C:   4348 Min:      4 Act:   97 Avg:  106 Max:     335
> T:27 ( 3755) P:53 I:23500 C:   4255 Min:      3 Act:   67 Avg:   80 Max:     244
> T:28 ( 3756) P:52 I:24000 C:   4167 Min:      3 Act:    7 Avg:   26 Max:     232
> T:29 ( 3757) P:51 I:24500 C:   4082 Min:      3 Act:    6 Avg:   81 Max:     353
> T:30 ( 3758) P:50 I:25000 C:   4000 Min:      3 Act:   11 Avg:   31 Max:     418
> T:31 ( 3759) P:49 I:25500 C:   3922 Min:      3 Act:    6 Avg:   21 Max:     433

Yeah, the numbers are a bit weird. I unfortunately choose odd hardware
to report numbers on, since it is known to have problems with -rt.
It was more a correctness test than an -rt performance test.
However, here are the numbers with 2.6.33.9-rt31 to compare and contrast.

uname -r
2.6.33.9-rt31-00001-g76582bb

sudo ./cyclictest -t32 -p 80 -n -i 10000 -l 10000
policy: fifo: loadavg: 0.10 0.31 0.15 1/543 3471

T: 0 ( 3440) P:80 I:10000 C: 5442 Min: 4 Act: 88 Avg: 138 Max: 486
T: 1 ( 3441) P:79 I:10500 C: 5183 Min: 6 Act: 70 Avg: 133 Max: 462
T: 2 ( 3442) P:78 I:11000 C: 4947 Min: 4 Act: 86 Avg: 127 Max: 399
T: 3 ( 3443) P:77 I:11500 C: 4732 Min: 5 Act: 120 Avg: 105 Max: 368
T: 4 ( 3444) P:76 I:12000 C: 4535 Min: 5 Act: 90 Avg: 126 Max: 424
T: 5 ( 3445) P:75 I:12500 C: 4354 Min: 4 Act: 89 Avg: 113 Max: 419
T: 6 ( 3446) P:74 I:13000 C: 4186 Min: 4 Act: 14 Avg: 89 Max: 428
T: 7 ( 3447) P:73 I:13500 C: 4031 Min: 3 Act: 9 Avg: 55 Max: 402
T: 8 ( 3448) P:72 I:14000 C: 3887 Min: 3 Act: 84 Avg: 65 Max: 375
T: 9 ( 3449) P:71 I:14500 C: 3753 Min: 4 Act: 68 Avg: 101 Max: 271
T:10 ( 3450) P:70 I:15000 C: 3628 Min: 3 Act: 130 Avg: 82 Max: 334
T:11 ( 3451) P:69 I:15500 C: 3511 Min: 3 Act: 110 Avg: 79 Max: 310
T:12 ( 3452) P:68 I:16000 C: 3401 Min: 3 Act: 9 Avg: 71 Max: 280
T:13 ( 3453) P:67 I:16500 C: 3298 Min: 3 Act: 7 Avg: 70 Max: 255
T:14 ( 3454) P:66 I:17000 C: 3201 Min: 5 Act: 112 Avg: 97 Max: 296
T:15 ( 3455) P:65 I:17500 C: 3110 Min: 4 Act: 69 Avg: 92 Max: 312
T:16 ( 3456) P:64 I:18000 C: 3023 Min: 4 Act: 138 Avg: 94 Max: 311
T:17 ( 3457) P:63 I:18500 C: 2942 Min: 4 Act: 86 Avg: 108 Max: 289
T:18 ( 3458) P:62 I:19000 C: 2864 Min: 3 Act: 15 Avg: 31 Max: 335
T:19 ( 3459) P:61 I:19500 C: 2791 Min: 4 Act: 71 Avg: 89 Max: 274
T:20 ( 3460) P:60 I:20000 C: 2721 Min: 4 Act: 8 Avg: 74 Max: 287
T:21 ( 3461) P:59 I:20500 C: 2655 Min: 3 Act: 68 Avg: 62 Max: 339
T:22 ( 3462) P:58 I:21000 C: 10000 Min: 3 Act: 186 Avg: 94 Max: 407
T:23 ( 3463) P:57 I:21500 C: 10000 Min: 3 Act: 93 Avg: 64 Max: 373
T:24 ( 3464) P:56 I:22000 C: 10000 Min: 4 Act: 132 Avg: 82 Max: 356
T:25 ( 3465) P:55 I:22500 C: 10000 Min: 3 Act: 133 Avg: 93 Max: 323
T:26 ( 3466) P:54 I:23000 C: 10000 Min: 3 Act: 97 Avg: 64 Max: 333
T:27 ( 3467) P:53 I:23500 C: 10000 Min: 3 Act: 134 Avg: 70 Max: 320
T:28 ( 3468) P:52 I:24000 C: 10000 Min: 3 Act: 123 Avg: 59 Max: 226
T:29 ( 3469) P:51 I:24500 C: 10000 Min: 3 Act: 143 Avg: 73 Max: 241
T:30 ( 3470) P:50 I:25000 C: 10000 Min: 3 Act: 15 Avg: 82 Max: 241
T:31 ( 3471) P:49 I:25500 C: 10000 Min: 3 Act: 10 Avg: 49 Max: 294
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