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2026-05-15 - 19:59
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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 the 100 highest latencies:
System rackbslot7.osadl.org (updated Fri May 15, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13484991112,76cyclictest16576-21apt-get11:36:240
1308121046,15sleep10-21swapper/106:57:381
134849910370,22cyclictest26958-21latency_hist07:41:110
134849910263,31cyclictest2374-21systemd-journal11:16:290
134969910077,16cyclictest13475-21cyclictest11:21:411
13504999980,13cyclictest13175-21processes08:36:402
1349699982,56cyclictest15637-21cut10:41:101
13496999759,31cyclictest13942-21idleruntime-cro08:41:071
1348499963,66cyclictest24994-21ssh10:56:240
13504999577,11cyclictest5907-21cron09:31:072
125752958,62sleep012582-21awk06:56:470
1348499946,49cyclictest15-21ksoftirqd/008:33:400
13484999416,43cyclictest15-21ksoftirqd/009:39:280
13496999355,32cyclictest297-21systemd-logind08:21:081
13496999269,15cyclictest14185-21/usr/sbin/munin08:41:281
1349699923,53cyclictest21270-21seq11:43:281
1349699923,53cyclictest21270-21seq11:43:281
1349699923,49cyclictest15158-21seq11:33:401
1349699913,51cyclictest32348-21ssh11:07:421
13496999117,39cyclictest20419-21diskmemload11:29:391
13496999117,39cyclictest20419-21diskmemload11:29:391
1349699903,52cyclictest25102-21seq09:07:301
1349699902,48cyclictest5992-21ssh10:24:381
1349699902,48cyclictest5992-21ssh10:24:381
1349699894,74cyclictest0-21swapper/112:11:221
1349699894,74cyclictest0-21swapper/112:11:221
1349699893,51cyclictest16834-21seq08:47:091
1349699893,51cyclictest16834-21seq08:47:091
1349699893,49cyclictest25057-21seq07:35:081
1349699892,50cyclictest960-21seq12:04:111
1349699892,50cyclictest21862-21seq07:25:401
1349699892,46cyclictest0-21swapper/109:29:311
1348499896,71cyclictest29806-21apt-get10:11:220
13504998864,18cyclictest21874-21cstates10:51:242
1349699882,50cyclictest8911-21seq08:24:091
1349699882,46cyclictest522-21seq07:58:171
13484998834,27cyclictest15-21ksoftirqd/007:12:040
1349699873,54cyclictest24301-21seq11:48:391
1349699872,51cyclictest12037-21seq08:32:351
1349699872,48cyclictest28640-21seq10:07:521
1349699872,48cyclictest28640-21seq10:07:521
1349699872,48cyclictest23456-21seq07:30:301
1349699872,47cyclictest26466-21runrttasks10:57:531
1349699872,46cyclictest32370-21seq09:21:041
1349699872,46cyclictest32370-21seq09:21:041
13484998711,44cyclictest15-21ksoftirqd/010:41:100
13496998666,11cyclictest0-21swapper/107:41:281
1349699862,49cyclictest2163-21seq08:03:351
1349699862,47cyclictest20127-21seq08:57:421
1349699862,47cyclictest20127-21seq08:57:421
1349699862,46cyclictest29412-21seq11:02:481
1349699862,46cyclictest29412-21seq11:02:481
1349699858,46cyclictest26183-21seq10:04:201
13496998546,32cyclictest0-21swapper/112:21:061
1349699853,51cyclictest16721-21seq07:06:531
1349699852,47cyclictest19864-21seq09:53:181
13484998559,16cyclictest20468-21latency_hist07:21:100
13484998552,12cyclictest181rcu_preempt08:41:280
1348499853,73cyclictest4519-21apt-get08:11:500
13504998466,11cyclictest2374-21systemd-journal11:44:272
13504998466,11cyclictest2374-21systemd-journal11:44:272
13496998462,12cyclictest0-21swapper/110:31:301
13496998462,12cyclictest0-21swapper/110:31:301
13496998437,23cyclictest26943-21kworker/u17:1-nfsiod11:15:181
13496998437,23cyclictest26943-21kworker/u17:1-nfsiod11:15:181
1349699842,43cyclictest23922-21runrttasks10:54:451
13496998341,35cyclictest0-21swapper/108:11:071
1349699832,46cyclictest352-21runrttasks12:06:551
1348499833,43cyclictest15-21ksoftirqd/008:37:050
13496998267,8cyclictest0-21swapper/107:51:421
13496998267,8cyclictest0-21swapper/107:51:421
13496998259,14cyclictest2374-21systemd-journal12:22:261
13496998214,36cyclictest352-21runrttasks11:54:311
13496998141,33cyclictest0-21swapper/111:37:211
13496998112,45cyclictest18629-21seq08:54:101
13484998159,14cyclictest2374-21systemd-journal09:48:270
1348499814,52cyclictest15-21ksoftirqd/007:46:420
1348499812,43cyclictest15-21ksoftirqd/008:47:330
1348499812,43cyclictest15-21ksoftirqd/008:47:330
13504998063,12cyclictest11891-21latency_hist09:41:092
13504998059,10cyclictest0-21swapper/207:46:292
13484998010,44cyclictest15-21ksoftirqd/008:07:080
13504997963,9cyclictest0-21swapper/212:06:292
13504997962,11cyclictest25240-21/usr/sbin/munin11:51:072
13504997953,20cyclictest16032-21latency_hist11:36:102
13496997960,10cyclictest0-21swapper/112:26:401
13496997960,10cyclictest0-21swapper/112:26:401
1349699793,63cyclictest15202-21ssh09:46:191
1349699792,44cyclictest29945-21runrttasks07:51:001
13484997915,35cyclictest15-21ksoftirqd/007:24:510
1351099784,35cyclictest0-21swapper/310:11:293
13504997862,8cyclictest0-21swapper/207:01:322
13504997860,9cyclictest0-21swapper/208:16:292
1349699783,61cyclictest25417-21apt-get07:36:181
1349699783,46cyclictest352-21runrttasks09:02:031
13484997858,15cyclictest790-21kworker/u19:0+events_unbound10:01:060
13484997853,18cyclictest13475-21cyclictest12:21:280
13484997813,39cyclictest15-21ksoftirqd/010:07:560
13484997813,39cyclictest15-21ksoftirqd/010:07:560
13504997762,8cyclictest0-21swapper/211:37:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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