Jose Pascual wrote:
> Hi Gilles,
>
> thank you for your answer,
>
> Could you send your benchmark results? (what mherz are your PLLA working?
> and your Master Clock?)?
The clock settings of the CSB637 board I am using, displayed by the
kernel are:
Clocks: CPU 184 MHz, master 46 MHz, main 3.686 MHz
Running a 2.6.20 I-pipe kernel, setting the nucleus latency
(/proc/xenomai/latency) to 70us, I get a worst case latency of 175 us
over 8 hours, under dd if=/dev/zero of=/dev/null load.
Here are the latency histogram results.
---|--param|----range-|--samples
HSD| min| 10 - 11 | 22
HSD| min| 11 - 12 | 746
HSD| min| 12 - 13 | 397
HSD| min| 13 - 14 | 206
HSD| min| 15 - 16 | 1
HSD| min| 20 - 21 | 31
HSD| min| 21 - 22 | 3524
HSD| min| 22 - 23 | 18810
HSD| min| 23 - 24 | 3496
HSD| min| 24 - 25 | 1135
HSD| min| 25 - 26 | 429
HSD| min| 26 - 27 | 1
HSD| min| 74 - 75 | 1
---|--param|----range-|--samples
HSD| avg| 10 - 11 | 22
HSD| avg| 11 - 12 | 746
HSD| avg| 12 - 13 | 397
HSD| avg| 13 - 14 | 206
HSD| avg| 15 - 16 | 1
HSD| avg| 17 - 18 | 2
HSD| avg| 18 - 19 | 137
HSD| avg| 19 - 20 | 116
HSD| avg| 20 - 21 | 74
HSD| avg| 21 - 22 | 3525
HSD| avg| 22 - 23 | 18907
HSD| avg| 23 - 24 | 4070
HSD| avg| 24 - 25 | 1686
HSD| avg| 25 - 26 | 1195
HSD| avg| 26 - 27 | 326
HSD| avg| 27 - 28 | 971
HSD| avg| 28 - 29 | 7377
HSD| avg| 29 - 30 | 17482
HSD| avg| 30 - 31 | 1602
HSD| avg| 31 - 32 | 561
HSD| avg| 32 - 33 | 261
HSD| avg| 33 - 34 | 263
HSD| avg| 34 - 35 | 271
HSD| avg| 35 - 36 | 115
HSD| avg| 36 - 37 | 29
HSD| avg| 55 - 56 | 64
HSD| avg| 56 - 57 | 1047
HSD| avg| 57 - 58 | 222
HSD| avg| 58 - 59 | 37
HSD| avg| 59 - 60 | 1
HSD| avg| 63 - 64 | 1
HSD| avg| 70 - 71 | 10
HSD| avg| 71 - 72 | 584
HSD| avg| 72 - 73 | 9495
HSD| avg| 73 - 74 | 18874
HSD| avg| 74 - 75 | 122506
HSD| avg| 75 - 76 | 687030
HSD| avg| 76 - 77 | 685654
HSD| avg| 77 - 78 | 1235930
HSD| avg| 78 - 79 | 97036
HSD| avg| 79 - 80 | 33766
HSD| avg| 80 - 81 | 2983
HSD| avg| 81 - 82 | 496
HSD| avg| 88 - 89 | 3
HSD| avg| 89 - 90 | 2
HSD| avg| 90 - 91 | 9
HSD| avg| 91 - 92 | 16
HSD| avg| 92 - 93 | 29
HSD| avg| 93 - 94 | 144
HSD| avg| 94 - 95 | 167
HSD| avg| 95 - 96 | 681
HSD| avg| 96 - 97 | 906
HSD| avg| 97 - 98 | 11302
HSD| avg| 98 - 99 | 13198
HSD| avg| 99 -100 | 14670
HSD| avg| 100 -101 | 26229
HSD| avg| 101 -102 | 7286
HSD| avg| 102 -103 | 27906
HSD| avg| 103 -104 | 173187
HSD| avg| 104 -105 | 1694570
HSD| avg| 105 -106 | 830944
HSD| avg| 106 -107 | 613763
HSD| avg| 107 -108 | 81959
HSD| avg| 108 -109 | 41967
HSD| avg| 109 -110 | 45206
HSD| avg| 110 -111 | 45041
HSD| avg| 111 -112 | 3748510
HSD| avg| 112 -113 | 10275799
HSD| avg| 113 -114 | 21326133
HSD| avg| 114 -115 | 5278953
HSD| avg| 115 -116 | 6019472
HSD| avg| 116 -117 | 1740063
HSD| avg| 117 -118 | 1281249
HSD| avg| 118 -119 | 829744
HSD| avg| 119 -120 | 30357
HSD| avg| 120 -121 | 3123
HSD| avg| 121 -122 | 465
HSD| avg| 122 -123 | 1906
HSD| avg| 123 -124 | 2173
HSD| avg| 124 -125 | 3728
HSD| avg| 125 -126 | 8888
HSD| avg| 126 -127 | 25723
HSD| avg| 127 -128 | 120826
HSD| avg| 128 -129 | 49583
HSD| avg| 129 -130 | 86632
HSD| avg| 130 -131 | 33987
HSD| avg| 131 -132 | 95449
HSD| avg| 132 -133 | 16782
HSD| avg| 133 -134 | 5143
HSD| avg| 134 -135 | 1717
HSD| avg| 135 -136 | 109
HSD| avg| 136 -137 | 181
HSD| avg| 137 -138 | 54
HSD| avg| 138 -139 | 26
HSD| avg| 139 -140 | 1
HSD| avg| 140 -141 | 2
HSD| avg| 142 -143 | 1
HSD| avg| 143 -144 | 7
HSD| avg| 144 -145 | 36
HSD| avg| 145 -146 | 79
HSD| avg| 146 -147 | 33
HSD| avg| 147 -148 | 84
HSD| avg| 148 -149 | 9
HSD| avg| 149 -150 | 3
HSD| avg| 150 -151 | 2
HSD| avg| 152 -153 | 8
HSD| avg| 153 -154 | 5
HSD| avg| 154 -155 | 60
HSD| avg| 155 -156 | 86
HSD| avg| 156 -157 | 469
HSD| avg| 157 -158 | 339
HSD| avg| 158 -159 | 566
HSD| avg| 159 -160 | 1962
HSD| avg| 160 -161 | 1441
HSD| avg| 161 -162 | 4948
HSD| avg| 162 -163 | 2681
HSD| avg| 163 -164 | 3713
HSD| avg| 164 -165 | 1345
HSD| avg| 165 -166 | 3059
HSD| avg| 166 -167 | 1758
HSD| avg| 167 -168 | 2036
HSD| avg| 168 -169 | 2543
HSD| avg| 169 -170 | 286
HSD| avg| 170 -171 | 112
HSD| avg| 171 -172 | 6
HSD| avg| 172 -173 | 1
HSD| avg| 174 -175 | 1
---|--param|----range-|--samples
HSD| max| 122 -123 | 1
HSD| max| 131 -132 | 243
HSD| max| 132 -133 | 423
HSD| max| 133 -134 | 320
HSD| max| 134 -135 | 118
HSD| max| 135 -136 | 4
HSD| max| 136 -137 | 10
HSD| max| 137 -138 | 3
HSD| max| 138 -139 | 2
HSD| max| 143 -144 | 6
HSD| max| 144 -145 | 36
HSD| max| 145 -146 | 78
HSD| max| 146 -147 | 33
HSD| max| 147 -148 | 84
HSD| max| 148 -149 | 9
HSD| max| 149 -150 | 3
HSD| max| 150 -151 | 2
HSD| max| 152 -153 | 8
HSD| max| 153 -154 | 5
HSD| max| 154 -155 | 60
HSD| max| 155 -156 | 86
HSD| max| 156 -157 | 469
HSD| max| 157 -158 | 339
HSD| max| 158 -159 | 566
HSD| max| 159 -160 | 1962
HSD| max| 160 -161 | 1441
HSD| max| 161 -162 | 4948
HSD| max| 162 -163 | 2681
HSD| max| 163 -164 | 3713
HSD| max| 164 -165 | 1345
HSD| max| 165 -166 | 3059
HSD| max| 166 -167 | 1758
HSD| max| 167 -168 | 2035
HSD| max| 168 -169 | 2543
HSD| max| 169 -170 | 286
HSD| max| 170 -171 | 112
HSD| max| 171 -172 | 6
HSD| max| 172 -173 | 1
HSD| max| 174 -175 | 1
HSH|--param|--samples-|--average--|---stddev--
HSS| min| 28799| 21.626| 2.387
HSS| avg| 57599720| 36.359| 75.112
HSS| max| 28799| 161.719| 6.860
---|------------|------------|------------|--------|-------------------------
RTS| 10.416| 111.111| 174.305| 0| 08:00:02/08:00:00
--
Gilles Chanteperdrix.
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