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2026-05-15 - 18:53
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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 50 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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