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2022-07-06 - 06:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Intel

x86 Intel Atom D510 @1667 MHz, Linux 3.12.61-rt81 (Profile)

Latency plot of shadow in rack #1, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack1slot6s.osadl.org (updated Wed Jul 06, 2022 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1769299915,27cyclictest0-21swapper/219:26:562
1769299903,28cyclictest0-21swapper/217:12:082
17692998627,20cyclictest13799-21latency_hist18:06:442
1769299844,28cyclictest0-21swapper/218:06:532
1769299834,27cyclictest0-21swapper/222:31:532
17692998330,10cyclictest12040-21grep21:26:462
17692998017,10cyclictest29308-21sed22:01:512
1769399706,41cyclictest0-21swapper/318:41:423
271752640,4sleep327373-21grep19:41:553
1769399645,50cyclictest0-21swapper/321:52:053
17693996335,18cyclictest0-21swapper/320:11:393
17690996221,22cyclictest29489-21open_files18:37:071
17687996243,12cyclictest0-21swapper/017:56:430
17693996120,25cyclictest4247-21if_eth022:16:523
238199600,7rtkit-daemon0-21swapper/321:39:283
238199600,7rtkit-daemon0-21swapper/321:39:283
238199600,4rtkit-daemon2380-21rtkit-daemon17:09:013
1769399605,31cyclictest0-21swapper/321:26:593
1769399603,39cyclictest1333-21snmpd22:26:483
89432593,48sleep00-21swapper/021:17:090
238199590,8rtkit-daemon0-21swapper/318:15:363
238199590,4rtkit-daemon2380-21rtkit-daemon19:07:123
238199590,4rtkit-daemon2380-21rtkit-daemon18:30:213
238199590,10rtkit-daemon0-21swapper/322:33:263
1769099595,12cyclictest0-21swapper/118:57:091
1769099595,12cyclictest0-21swapper/118:57:091
17690995939,13cyclictest12668-21gltestperf21:26:521
99222584,11sleep10-21swapper/119:06:421
238199580,5rtkit-daemon0-21swapper/317:10:242
238199580,4rtkit-daemon2380-21rtkit-daemon20:43:383
238199580,4rtkit-daemon2380-21rtkit-daemon17:43:083
1769399584,15cyclictest0-21swapper/319:32:053
17693995837,13cyclictest30605-21crond22:06:343
1769099585,12cyclictest0-21swapper/122:01:581
1769099584,12cyclictest0-21swapper/122:07:031
1769399573,38cyclictest0-21swapper/320:17:063
17693995722,15cyclictest0-21swapper/321:01:543
17693995722,15cyclictest0-21swapper/321:01:543
1769099574,13cyclictest0-21swapper/121:41:501
1769099574,13cyclictest0-21swapper/121:16:531
1769099574,12cyclictest0-21swapper/121:56:361
1769099574,12cyclictest0-21swapper/120:31:011
238199560,4rtkit-daemon2380-21rtkit-daemon19:12:343
238199560,4rtkit-daemon2380-21rtkit-daemon18:03:373
1769399566,29cyclictest0-21swapper/320:01:523
1769399565,31cyclictest0-21swapper/319:01:413
1769399565,31cyclictest0-21swapper/319:01:413
1769099565,13cyclictest0-21swapper/117:22:041
1769099564,31cyclictest0-21swapper/120:57:041
1769099564,28cyclictest0-21swapper/119:55:121
1768799564,44cyclictest0-21swapper/022:36:330
17687995637,13cyclictest0-21swapper/018:42:120
238199550,5rtkit-daemon2380-21rtkit-daemon20:06:542
208952553,45sleep30-21swapper/319:27:073
1769399554,39cyclictest23480-21gltestperf17:17:033
17693995535,12cyclictest1159-21crond19:56:393
1769099555,29cyclictest0-21swapper/118:41:551
1769099554,30cyclictest0-21swapper/122:26:471
1769099554,27cyclictest0-21swapper/118:23:061
17690995521,13cyclictest0-21swapper/118:27:081
17690995520,14cyclictest0-21swapper/119:22:071
17690995517,13cyclictest0-21swapper/118:47:021
1768799554,43cyclictest6914-21crond21:16:360
167902552,9sleep30-21swapper/319:18:413
238199540,5rtkit-daemon2380-21rtkit-daemon18:46:582
238199540,5rtkit-daemon2380-21rtkit-daemon17:37:003
232502543,9sleep10-21swapper/119:32:051
1769399545,29cyclictest0-21swapper/318:55:163
17693995435,11cyclictest0-21swapper/317:22:103
17693995410,25cyclictest9046-21crond17:56:433
17692995412,25cyclictest0-21swapper/222:16:352
1769099548,40cyclictest0-21swapper/121:06:371
1769099548,40cyclictest0-21swapper/121:06:371
1769099547,22cyclictest0-21swapper/120:06:401
1769099545,28cyclictest0-21swapper/121:11:461
1769099544,30cyclictest0-21swapper/119:27:091
37242533,8sleep13799-21grep22:16:481
247272533,12sleep00-21swapper/021:51:560
238199530,5rtkit-daemon2380-21rtkit-daemon19:37:033
238199530,5rtkit-daemon2380-21rtkit-daemon19:37:033
238199530,5rtkit-daemon2380-21rtkit-daemon19:06:423
1769399535,29cyclictest0-21swapper/320:47:053
1769399535,29cyclictest0-21swapper/318:46:523
1769399534,39cyclictest0-21swapper/318:41:593
17693995322,13cyclictest0-21swapper/322:21:463
17693995322,13cyclictest0-21swapper/322:21:463
17693995322,13cyclictest0-21swapper/317:47:023
17693995321,15cyclictest0-21swapper/320:51:513
17693995317,9cyclictest31213-21kworker/u8:221:56:453
1769299534,41cyclictest0-21swapper/222:26:472
1769299533,32cyclictest0-21swapper/221:17:032
17692995313,31cyclictest0-21swapper/221:21:512
1769099535,29cyclictest0-21swapper/119:41:491
1769099535,28cyclictest0-21swapper/119:37:011
1769099535,28cyclictest0-21swapper/119:37:011
1769099535,28cyclictest0-21swapper/117:12:531
1769099535,27cyclictest0-21swapper/120:25:061
1769099534,30cyclictest0-21swapper/117:42:101
1769099534,29cyclictest0-21swapper/120:51:501
1769099534,27cyclictest1649-21sed22:11:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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