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2026-04-12 - 17:19
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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 rack3slot6.osadl.org (updated Sun Apr 12, 2026 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1679228722,53sleep10-21swapper/107:07:091
92012790,5chrt0-21swapper/009:45:410
17251997949,23cyclictest3773-21seq12:35:131
17251997936,37cyclictest26-21ksoftirqd/108:20:181
163372797,59sleep016355-21/usr/sbin/munin07:05:270
17245997756,14cyclictest26565-21apt-get07:35:160
17245997530,40cyclictest14-21ksoftirqd/012:15:350
155562750,6sleep115558-21ntpq11:35:301
17251997447,14cyclictest26-21ksoftirqd/112:30:131
17245997350,9cyclictest14-21ksoftirqd/012:34:560
17245997328,40cyclictest14-21ksoftirqd/011:44:040
17245997246,18cyclictest21020-21apt-get10:20:150
17245997236,23cyclictest14-21ksoftirqd/008:35:160
17245997149,9cyclictest19623-21sshd11:46:190
17245997135,8cyclictest14-21ksoftirqd/008:25:000
17251997052,9cyclictest0-21swapper/107:40:111
93702690,5sleep0171rcuc/008:15:350
17251996940,16cyclictest26-21ksoftirqd/109:55:131
17251996938,18cyclictest0-21swapper/110:40:121
17245996945,8cyclictest14-21ksoftirqd/010:40:150
17245996936,15cyclictest14-21ksoftirqd/007:50:260
17245996936,15cyclictest14-21ksoftirqd/007:50:260
17245996932,30cyclictest14-21ksoftirqd/010:15:310
1725199684,15cyclictest26-21ksoftirqd/111:20:001
1725199684,15cyclictest26-21ksoftirqd/109:00:011
17251996840,19cyclictest26-21ksoftirqd/108:50:121
17251996840,17cyclictest0-21swapper/108:10:131
17245996844,10cyclictest29786-21/usr/sbin/munin10:45:220
17245996841,8cyclictest14-21ksoftirqd/009:55:280
17245996822,18cyclictest14-21ksoftirqd/010:10:160
17245996736,16cyclictest14-21ksoftirqd/009:20:020
17245996724,20cyclictest14-21ksoftirqd/008:05:360
17245996723,23cyclictest415-21awk09:20:470
17245996715,8cyclictest151rcu_preempt12:20:260
17251996638,16cyclictest0-21swapper/107:20:121
17251996637,17cyclictest0-21swapper/109:15:121
17251996636,17cyclictest0-21swapper/107:50:121
17251996636,17cyclictest0-21swapper/107:50:121
17245996633,15cyclictest22754-21/usr/sbin/munin10:25:190
17245996629,16cyclictest14-21ksoftirqd/008:10:240
17245996628,15cyclictest14-21ksoftirqd/009:50:350
17245996614,8cyclictest151rcu_preempt07:25:010
17251996534,21cyclictest0-21swapper/112:20:151
17251996522,39cyclictest26-21ksoftirqd/111:00:251
1725199652,11cyclictest9907-21idleruntime-cro08:20:011
1724599655,38cyclictest30601/usr/sbin/munin08:00:340
17245996533,26cyclictest28608-21telnet07:40:160
17245996527,15cyclictest14-21ksoftirqd/010:50:110
17245996522,12cyclictest14-21ksoftirqd/011:15:120
17251996435,17cyclictest0-21swapper/108:30:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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