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2025-11-18 - 12:01
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack1slot8.osadl.org (updated Tue Nov 18, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
68212725702,15sleep00-21swapper/019:08:120
703799516436,52cyclictest0-21swapper/021:06:260
703799479400,40cyclictest7434-21df19:10:160
703899463385,48cyclictest0-21swapper/121:06:261
703899405347,42cyclictest0-21swapper/119:10:161
66612232210,14sleep10-21swapper/119:06:351
70389910611,73cyclictest0-21swapper/121:41:591
7038999711,64cyclictest0-21swapper/120:15:001
216899960,3rtkit-daemon377-21ssh00:22:360
7038999211,68cyclictest0-21swapper/119:49:591
7038999013,59cyclictest0-21swapper/122:42:591
216899900,10rtkit-daemon0-21swapper/122:15:030
216899850,4rtkit-daemon2167-21rtkit-daemon23:32:351
216899830,5rtkit-daemon2167-21rtkit-daemon22:46:191
216899810,4rtkit-daemon2167-21rtkit-daemon00:03:251
7037998057,17cyclictest0-21swapper/021:45:000
216899790,4rtkit-daemon2167-21rtkit-daemon23:48:151
216899790,4rtkit-daemon2167-21rtkit-daemon19:27:101
216899780,5rtkit-daemon2167-21rtkit-daemon23:06:581
216899770,4rtkit-daemon2167-21rtkit-daemon22:36:291
216899770,4rtkit-daemon2167-21rtkit-daemon20:55:171
216899760,5rtkit-daemon2167-21rtkit-daemon19:15:251
216899760,13rtkit-daemon0-21swapper/022:54:091
7038997516,38cyclictest0-21swapper/121:59:581
216899710,4rtkit-daemon2167-21rtkit-daemon23:10:340
7038997015,38cyclictest0-21swapper/121:20:591
287452700,5sleep028747-21strings00:15:210
7037996926,9cyclictest592-21ssh23:25:550
7037996911,49cyclictest0-21swapper/000:10:230
7037996813,46cyclictest0-21swapper/021:15:320
7037996712,50cyclictest0-21swapper/023:30:590
7038996615,31cyclictest0-21swapper/120:09:591
7037996639,21cyclictest0-21swapper/021:37:380
7037996619,41cyclictest0-21swapper/023:18:590
7038996512,29cyclictest0-21swapper/120:20:591
7037996533,24cyclictest0-21swapper/023:20:240
7037996525,15cyclictest24343-21df21:20:150
7037996524,33cyclictest22731-21chrt23:09:320
7037996521,37cyclictest18138-21ssh23:56:360
7038996413,31cyclictest0-21swapper/100:17:001
7038996413,30cyclictest0-21swapper/119:52:001
7038996412,30cyclictest0-21swapper/119:22:001
7037996441,16cyclictest0-21swapper/021:50:180
7037996433,24cyclictest0-21swapper/000:00:590
7037996428,29cyclictest18253-21telnet22:05:150
7037996428,29cyclictest12440-21idleruntime-cro19:25:010
7038996313,33cyclictest0-21swapper/119:57:591
7038996312,30cyclictest0-21swapper/120:51:591
7038996310,31cyclictest0-21swapper/123:11:591
703799635,51cyclictest0-21swapper/023:00:130
7037996327,29cyclictest0-21swapper/022:21:440
7037996326,20cyclictest18614-21expr21:10:190
7037996324,32cyclictest25852-21missed_timers20:00:200
7037996324,14cyclictest2763-21ssh00:25:300
7037996312,44cyclictest0-21swapper/019:42:590
703899625,38cyclictest0-21swapper/120:05:001
7038996216,28cyclictest0-21swapper/100:27:591
7038996214,32cyclictest0-21swapper/119:31:591
7038996210,30cyclictest0-21swapper/123:22:591
7037996239,17cyclictest0-21swapper/022:00:190
7037996234,21cyclictest0-21swapper/000:05:190
7037996227,9cyclictest1067-21snmpd22:41:290
7037996226,28cyclictest32442-21munin-node22:30:250
7037996225,9cyclictest3624-21ssh22:35:220
7037996222,15cyclictest9951-21munin-run00:40:000
7037996221,34cyclictest9953-21unixbench_singl22:45:320
7037996219,36cyclictest0-21swapper/021:25:230
7038996114,31cyclictest0-21swapper/120:38:591
7038996113,30cyclictest0-21swapper/121:37:581
7038996111,34cyclictest0-21swapper/122:34:591
7037996137,17cyclictest0-21swapper/020:35:270
7037996131,24cyclictest0-21swapper/021:30:110
7037996128,26cyclictest9210-21ssh23:40:340
7037996125,9cyclictest8023-21ssh21:45:430
7037996124,30cyclictest14614-21ssh22:55:150
7037996123,31cyclictest13210-21ssh23:49:120
7037996122,32cyclictest0-21swapper/022:10:150
7037996122,24cyclictest11691-21aten_r1power_po22:50:130
7037996121,32cyclictest5983-21sendmail_mailqu23:35:240
257522615,14sleep10-21swapper/122:17:341
72052604,13sleep10-21swapper/123:38:191
703899605,40cyclictest0-21swapper/123:16:001
7038996011,31cyclictest0-21swapper/120:35:001
7038996011,29cyclictest0-21swapper/120:25:591
7037996035,20cyclictest0-21swapper/020:45:050
7037996033,20cyclictest0-21swapper/021:55:430
7037996031,23cyclictest18052-21diskmemload22:25:300
7037996025,27cyclictest17923-21latency_hist19:40:010
7037996024,30cyclictest1427-21runrttasks19:51:270
7037996021,21cyclictest1067-21snmpd20:50:290
703899599,33cyclictest0-21swapper/120:48:591
703899596,34cyclictest0-21swapper/119:36:591
7038995913,26cyclictest0-21swapper/122:14:001
703799596,45cyclictest0-21swapper/020:20:160
703799595,35cyclictest0-21swapper/000:30:010
703799595,32cyclictest0-21swapper/020:10:020
7037995929,24cyclictest78950irq/46-eth0-tx-23:51:190
7037995929,24cyclictest78950irq/46-eth0-tx-23:51:190
7037995919,33cyclictest0-21swapper/021:00:190
7037995919,23cyclictest32288-21latency_hist20:20:020
7037995917,30cyclictest0-21swapper/019:45:320
321762596,16sleep10-21swapper/100:20:291
7038995812,30cyclictest0-21swapper/121:49:581
7038995812,29cyclictest0-21swapper/121:05:001
703799586,35cyclictest0-21swapper/021:00:010
7037995828,22cyclictest1067-21snmpd20:10:200
7037995826,25cyclictest10633-21crond19:20:010
7037995825,24cyclictest0-21swapper/019:55:180
7037995819,24cyclictest2414-21if_err_eth020:25:190
310692584,12sleep10-21swapper/122:26:191
194792584,13sleep10-21swapper/121:10:381
159692584,12sleep10-21swapper/122:56:191
7038995720,24cyclictest0-21swapper/100:06:591
7038995715,30cyclictest0-21swapper/122:25:001
7038995713,30cyclictest0-21swapper/120:16:001
7038995713,29cyclictest0-21swapper/100:30:591
7038995712,28cyclictest0-21swapper/121:53:591
7038995710,29cyclictest0-21swapper/122:08:581
7037995722,27cyclictest14660-21df_abs19:30:150
703899562,41cyclictest17316-21sh22:02:591
7037995621,21cyclictest9012-21crond20:45:010
269902564,11sleep10-21swapper/100:12:171
216899560,4rtkit-daemon2167-21rtkit-daemon20:33:460
178612564,12sleep10-21swapper/119:40:021
9672554,12sleep10-21swapper/123:26:531
89222554,12sleep10-21swapper/120:44:081
86652554,11sleep10-21swapper/100:36:001
233482550,5sleep123349-21sh21:18:271
184132544,12sleep10-21swapper/123:57:321
7038995313,28cyclictest0-21swapper/121:28:591
7037995321,26cyclictest0-21swapper/019:28:590
7038995112,26cyclictest0-21swapper/123:53:001
7038995112,26cyclictest0-21swapper/123:53:001
314682494,12sleep10-21swapper/121:30:451
7038994810,26cyclictest0-21swapper/123:02:591
703899435,31cyclictest0-21swapper/123:43:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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