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2026-05-23 - 07:59

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Intel
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 highest latencies:
System rack1slot6s.osadl.org (updated Sat May 23, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14519910342,13cyclictest0-21swapper/221:24:592
135192870,5sleep113522-21latency_hist17:03:571
248599830,5rtkit-daemon2484-21rtkit-daemon21:56:161
248599830,5rtkit-daemon2484-21rtkit-daemon21:56:161
248599770,5rtkit-daemon2484-21rtkit-daemon18:42:012
1452997444,12cyclictest0-21swapper/317:24:133
1452997137,16cyclictest0-21swapper/320:25:093
1452997043,12cyclictest0-21swapper/321:04:183
1452996938,11cyclictest0-21swapper/322:05:383
1451996940,13cyclictest0-21swapper/219:34:132
1451996912,50cyclictest28808-21unixbench_multi21:04:182
1452996840,12cyclictest0-21swapper/318:39:103
1452996838,14cyclictest0-21swapper/319:59:093
1451996841,12cyclictest0-21swapper/219:29:132
1451996729,23cyclictest0-21swapper/219:25:582
1448996739,12cyclictest0-21swapper/021:39:020
145299665,53cyclictest0-21swapper/321:29:103
1452996641,11cyclictest0-21swapper/316:49:273
1452996639,12cyclictest0-21swapper/318:04:113
1452996638,12cyclictest0-21swapper/320:34:153
1452996637,12cyclictest0-21swapper/320:30:473
1452996637,12cyclictest0-21swapper/320:30:473
1452996637,10cyclictest0-21swapper/319:35:563
1452996636,12cyclictest0-21swapper/318:48:363
1452996539,12cyclictest0-21swapper/321:34:133
1452996538,12cyclictest0-21swapper/320:19:013
1452996538,10cyclictest0-21swapper/319:15:423
1451996538,13cyclictest0-21swapper/219:44:222
1451996534,13cyclictest0-21swapper/221:29:012
145299644,52cyclictest0-21swapper/320:59:203
1452996439,11cyclictest0-21swapper/317:19:193
1452996438,12cyclictest0-21swapper/320:17:053
1452996438,12cyclictest0-21swapper/319:29:033
1452996438,11cyclictest0-21swapper/321:44:033
1452996437,13cyclictest0-21swapper/321:19:063
1452996437,11cyclictest0-21swapper/317:04:253
1452996437,11cyclictest0-21swapper/317:04:253
1452996435,12cyclictest0-21swapper/318:49:583
1451996435,23cyclictest23098-21ssh19:21:122
145892630,11sleep0144899cyclictest19:56:360
1452996342,10cyclictest0-21swapper/321:10:143
1452996339,11cyclictest0-21swapper/317:39:063
1452996338,9cyclictest1419-21runrttasks21:24:323
1452996338,12cyclictest0-21swapper/317:14:123
1452996337,11cyclictest0-21swapper/321:54:133
1452996337,11cyclictest0-21swapper/321:54:133
1452996336,12cyclictest0-21swapper/316:59:083
1452996335,12cyclictest0-21swapper/321:39:073
1452996335,10cyclictest1419-21runrttasks19:24:443
145199634,53cyclictest23714-21ssh21:44:422
1451996336,12cyclictest0-21swapper/221:53:552
1451996336,12cyclictest0-21swapper/221:53:552
1451996335,12cyclictest0-21swapper/220:54:182
1451996335,12cyclictest0-21swapper/218:04:212
1451996334,13cyclictest0-21swapper/219:39:202
1452996238,11cyclictest0-21swapper/319:54:173
1452996236,12cyclictest0-21swapper/321:14:153
1452996236,12cyclictest0-21swapper/321:14:153
1452996236,11cyclictest0-21swapper/320:55:453
1452996236,10cyclictest20761-21rm20:04:253
1451996235,12cyclictest0-21swapper/220:39:052
1451996234,13cyclictest0-21swapper/219:59:102
1451996233,13cyclictest0-21swapper/220:58:592
1451996232,12cyclictest0-21swapper/220:44:022
145199623,53cyclictest3126-21ssh21:14:182
145199623,53cyclictest3126-21ssh21:14:182
121262623,11sleep20-21swapper/219:04:232
145299615,48cyclictest2328-21df19:39:053
1452996139,9cyclictest15596-21sed19:09:213
1452996138,10cyclictest0-21swapper/319:49:043
1452996138,10cyclictest0-21swapper/319:49:043
1452996135,11cyclictest24082-21unixbench_singl20:09:223
145199614,40cyclictest0-21swapper/219:14:092
1451996136,20cyclictest0-21swapper/216:49:312
1451996133,12cyclictest0-21swapper/220:49:212
1451996133,12cyclictest0-21swapper/218:54:202
1451996131,12cyclictest0-21swapper/222:02:182
1451996131,11cyclictest0-21swapper/220:17:392
1451996130,19cyclictest0-21swapper/218:30:582
1451996112,43cyclictest16663-21kworker/2:021:48:572
112222615,12sleep30-21swapper/320:39:093
248599600,4rtkit-daemon2484-21rtkit-daemon21:37:542
227952603,49sleep00-21swapper/021:44:090
145299605,48cyclictest14945-21ssh20:44:153
1452996036,9cyclictest15353-21nscd17:33:553
1452996036,11cyclictest0-21swapper/319:19:283
1452996036,10cyclictest0-21swapper/318:54:233
1452996036,10cyclictest0-21swapper/318:34:173
1452996035,12cyclictest0-21swapper/321:50:443
1452996035,12cyclictest0-21swapper/320:50:263
1451996039,8cyclictest2507-21gdm-simple-gree20:20:472
1451996034,12cyclictest0-21swapper/221:39:002
1451996033,12cyclictest0-21swapper/220:34:142
1451996030,12cyclictest0-21swapper/220:28:112
145099605,14cyclictest0-21swapper/121:30:151
145099604,42cyclictest0-21swapper/118:40:081
145099604,15cyclictest0-21swapper/120:28:421
145099604,13cyclictest14352-21taskset18:10:121
1452995941,11cyclictest11205-21df_inode19:04:073
145299594,48cyclictest20690-21munin-node18:29:213
145299594,48cyclictest0-21swapper/319:03:523
1452995935,11cyclictest0-21swapper/322:01:283
1451995935,11cyclictest0-21swapper/218:47:102
1451995933,12cyclictest0-21swapper/218:24:042
1451995931,9cyclictest10110-21ssh19:49:182
1451995931,9cyclictest10110-21ssh19:49:182
1451995930,12cyclictest0-21swapper/220:09:402
145199593,50cyclictest14604-21diskstats19:09:062
145199593,49cyclictest0-21swapper/218:59:162
1451995929,11cyclictest0-21swapper/221:22:262
145099594,14cyclictest0-21swapper/121:11:291
145099594,13cyclictest0-21swapper/118:53:411
1450995921,15cyclictest0-21swapper/119:49:171
1450995921,15cyclictest0-21swapper/119:49:171
13612595,46sleep31287-21snmpd16:38:203
258802580,6sleep10-21swapper/121:00:361
1452995840,12cyclictest0-21swapper/319:44:233
1452995835,11cyclictest0-21swapper/317:59:173
1452995833,10cyclictest18656-21cpuspeed_turbos18:24:063
145299582,50cyclictest0-21swapper/317:58:553
1451995833,11cyclictest0-21swapper/220:29:192
1451995833,11cyclictest0-21swapper/220:29:192
145199583,48cyclictest0-21swapper/221:09:152
145099586,12cyclictest20733-21users20:04:231
145099585,28cyclictest0-21swapper/118:24:231
145099585,15cyclictest0-21swapper/119:11:081
145099585,15cyclictest0-21swapper/118:48:231
145099585,12cyclictest4783-21ntp_states20:29:151
145099585,12cyclictest4783-21ntp_states20:29:151
145099584,39cyclictest0-21swapper/120:11:291
144899583,46cyclictest480-21rm20:24:040
1448995820,25cyclictest0-21swapper/021:04:220
31182573,7sleep13203-21munin-node16:39:271
229132576,44sleep00-21swapper/020:09:070
1451995737,14cyclictest0-21swapper/222:04:032
1451995735,9cyclictest358-21tr18:49:062
1451995734,9cyclictest13848-21aten2.4-expect17:04:062
1451995734,9cyclictest13848-21aten2.4-expect17:04:062
1451995732,11cyclictest0-21swapper/216:39:232
1451995731,10cyclictest1419-21runrttasks16:44:082
145199573,48cyclictest19651-21fschecks_time20:04:082
145099576,12cyclictest10081-21users21:24:191
145099574,39cyclictest0-21swapper/120:42:461
144899575,44cyclictest32018-21cpu21:58:570
144899574,46cyclictest0-21swapper/020:17:450
1448995737,7cyclictest21454-21ssh20:54:100
1448995732,8cyclictest15388-21ssh19:09:180
144899573,47cyclictest3765-21unixbench_singl19:39:240
144899573,46cyclictest25818-21ssh18:39:060
1448995727,13cyclictest0-21swapper/019:25:200
1448995720,23cyclictest6026-21ssh22:08:440
310982563,45sleep20-21swapper/217:39:132
145299562,50cyclictest1930-21switchtime17:44:263
1451995631,13cyclictest0-21swapper/216:55:022
145099565,29cyclictest0-21swapper/117:19:161
145099565,28cyclictest0-21swapper/119:46:111
145099565,14cyclictest0-21swapper/120:54:441
145099565,13cyclictest0-21swapper/119:16:321
145099564,30cyclictest0-21swapper/117:49:041
145099564,30cyclictest0-21swapper/117:49:041
144899564,44cyclictest29030-21ssh21:54:000
144899564,44cyclictest29030-21ssh21:54:000
1448995636,8cyclictest2470-21runrttasks18:50:540
144899563,46cyclictest1419-21runrttasks21:29:140
144899563,44cyclictest14897-21ssh21:33:470
1448995626,14cyclictest0-21swapper/018:54:220
145299553,45cyclictest0-21swapper/318:19:053
1451995530,11cyclictest0-21swapper/217:09:132
145199553,47cyclictest0-21swapper/219:54:192
145199553,46cyclictest27837-21munin-run17:33:552
145099555,27cyclictest0-21swapper/119:23:151
144899559,39cyclictest1676-21nscd20:58:590
1448995535,9cyclictest12147-21kworker/0:220:08:170
1448995535,9cyclictest0-21swapper/021:18:410
1448995535,9cyclictest0-21swapper/021:18:410
144899553,46cyclictest23218-21kworker/0:019:44:180
144899553,45cyclictest23504-21ssh19:22:410
1448995526,13cyclictest0-21swapper/020:44:230
251502543,44sleep20-21swapper/217:25:232
248599540,5rtkit-daemon2484-21rtkit-daemon17:44:192
145299546,40cyclictest0-21swapper/318:14:063
145299544,43cyclictest0-21swapper/317:13:563
1451995433,10cyclictest0-21swapper/217:34:082
1451995429,12cyclictest0-21swapper/217:54:122
1451995427,15cyclictest0-21swapper/216:59:082
145099545,29cyclictest0-21swapper/120:02:411
145099545,29cyclictest0-21swapper/119:33:581
145099545,28cyclictest0-21swapper/121:37:401
145099545,28cyclictest0-21swapper/120:35:181
145099545,27cyclictest0-21swapper/121:44:411
145099545,27cyclictest0-21swapper/118:56:421
145099544,37cyclictest0-21swapper/121:14:561
145099544,37cyclictest0-21swapper/121:14:561
145099544,28cyclictest0-21swapper/122:05:471
145099544,28cyclictest0-21swapper/120:20:281
1450995438,9cyclictest3715-21unixbench_multi19:39:241
1450995422,11cyclictest0-21swapper/119:03:241
144899547,41cyclictest29061-21timerandwakeup19:29:220
1448995436,7cyclictest12774-21ssh19:05:260
1448995433,10cyclictest0-21swapper/017:34:200
144899543,44cyclictest19250-21ssh20:51:000
144899543,44cyclictest12246-21ssh20:40:010
144899543,12cyclictest0-21swapper/020:29:200
144899543,12cyclictest0-21swapper/020:29:200
1448995426,12cyclictest0-21swapper/018:29:040
1448995424,13cyclictest0-21swapper/020:03:500
1448995424,13cyclictest0-21swapper/016:49:200
74842533,43sleep17632-21latency_hist17:58:551
255352533,42sleep00-21swapper/021:49:010
1452995320,14cyclictest0-21swapper/316:54:193
1451995331,9cyclictest20890-21munin-node17:19:182
1451995329,12cyclictest0-21swapper/218:38:082
145099534,29cyclictest0-21swapper/120:15:431
145099534,27cyclictest0-21swapper/121:40:321
1448995330,8cyclictest32394-21ssh21:09:510
1448995329,9cyclictest388-21sshd19:34:570
1448995325,13cyclictest0-21swapper/018:44:110
1448995325,13cyclictest0-21swapper/017:39:110
1448995325,13cyclictest0-21swapper/017:08:560
1448995325,13cyclictest0-21swapper/017:08:560
1448995325,12cyclictest0-21swapper/017:14:170
248599520,5rtkit-daemon2484-21rtkit-daemon17:59:182
145942523,43sleep114600-21ssh19:56:381
145299527,38cyclictest0-21swapper/316:44:303
145099526,26cyclictest0-21swapper/119:07:181
145099523,42cyclictest0-21swapper/120:49:221
144899524,42cyclictest0-21swapper/016:44:140
1448995230,9cyclictest9078-21telnet16:54:080
1448995224,13cyclictest0-21swapper/017:09:100
1448995220,13cyclictest0-21swapper/019:15:060
144899522,44cyclictest9605-21ssh19:01:150
276162512,42sleep00-21swapper/017:31:090
145099516,31cyclictest0-21swapper/122:03:011
1450995135,9cyclictest25341-21needreboot19:24:161
144899514,41cyclictest0-21swapper/017:24:070
144899514,40cyclictest0-21swapper/018:38:530
144899513,42cyclictest10906-21ssh19:50:280
144899513,42cyclictest10906-21ssh19:50:280
144899513,41cyclictest7852-21ssh20:34:090
1448995124,12cyclictest0-21swapper/018:14:190
1448995123,12cyclictest0-21swapper/020:19:100
1448995122,13cyclictest0-21swapper/017:59:060
1448995121,9cyclictest5831-21sed21:19:080
122472513,41sleep00-21swapper/018:08:540
58652503,8sleep15967-21users16:44:311
26182502,9sleep00-21swapper/017:47:500
145299504,40cyclictest0-21swapper/316:39:303
1451995017,10cyclictest14999-21telnet18:14:052
145099505,36cyclictest0-21swapper/121:50:061
1450995037,8cyclictest8551-21head17:59:131
144899503,41cyclictest1287-21snmpd17:20:020
144899503,40cyclictest8211-21ssh21:23:530
1448995022,13cyclictest0-21swapper/016:59:270
248599490,5rtkit-daemon2484-21rtkit-daemon17:18:572
201622495,7sleep00-21swapper/018:25:100
1450994932,9cyclictest10715-21unixbench_singl16:54:291
1448994928,9cyclictest12517-21telnet18:09:040
1448994920,13cyclictest0-21swapper/017:58:540
1452994813,28cyclictest0-21swapper/317:49:103
1452994813,28cyclictest0-21swapper/317:49:103
145199485,35cyclictest0-21swapper/218:19:052
145099484,14cyclictest0-21swapper/118:29:121
1450994830,10cyclictest28846-21unixbench_singl21:04:181
1450994829,12cyclictest23273-21munin-node17:24:231
1450994829,12cyclictest13991-21sh20:44:011
1451994733,9cyclictest0-21swapper/217:49:252
1451994733,9cyclictest0-21swapper/217:49:252
1450994728,11cyclictest0-21swapper/121:18:581
1450994727,13cyclictest0-21swapper/119:29:181
1448994720,12cyclictest0-21swapper/017:49:040
1448994720,12cyclictest0-21swapper/017:49:040
250352463,9sleep10-21swapper/118:36:161
204322463,9sleep10-21swapper/117:16:071
145099463,36cyclictest10460-21tr18:04:061
1448994626,8cyclictest1287-21snmpd18:20:560
12232464,6sleep10-21swapper/116:36:411
11422464,6sleep00-21swapper/016:35:400
37202452,37sleep00-21swapper/016:41:030
178472453,36sleep10-21swapper/118:21:041
145299454,24cyclictest0-21swapper/317:34:083
1451994517,22cyclictest132082chrt18:09:112
300302443,35sleep10-21swapper/117:36:341
256612443,9sleep10-21swapper/117:29:051
1452994426,13cyclictest0-21swapper/318:09:053
145099444,33cyclictest0-21swapper/118:14:151
1450994426,11cyclictest14569-21gltestperf17:04:131
1450994426,11cyclictest14569-21gltestperf17:04:131
1450994423,11cyclictest30606-21aten_r1power_vo17:39:071
145199433,34cyclictest0-21swapper/216:38:592
1450994323,13cyclictest1626-21needreboot17:44:191
145099425,29cyclictest0-21swapper/117:09:181
145099425,28cyclictest0-21swapper/116:49:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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