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2026-06-10 - 03:37
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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 Wed Jun 10, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
68319911321,46cyclictest0-21swapper/021:05:300
68319911321,46cyclictest0-21swapper/021:05:300
6842999854,9cyclictest181rcu_preempt21:05:292
6842999854,9cyclictest181rcu_preempt21:05:292
683699973,47cyclictest25437-21apt-get19:54:341
6831999765,27cyclictest2628-21kworker/u19:3-events_unbound23:54:490
6831999725,28cyclictest11623-21ntp_states20:51:060
6831999725,28cyclictest11623-21ntp_states20:51:060
540929710,61sleep25461-21expr18:54:442
683699966,28cyclictest1375-21ssh23:19:341
6842999572,16cyclictest6819-21cyclictest22:40:002
6831999414,63cyclictest10060-21apt-get23:34:380
6836999348,37cyclictest0-21swapper/121:05:371
6836999348,37cyclictest0-21swapper/121:05:371
6831999317,44cyclictest1180-21/usr/sbin/munin22:24:470
64952936,64sleep10-21swapper/118:57:041
6831999259,26cyclictest21745-21latency_hist22:59:270
6831999223,30cyclictest22191-21apt-get19:44:390
6836999150,34cyclictest0-21swapper/123:31:541
683699913,37cyclictest31498-21latency_hist00:09:271
683699913,37cyclictest31498-21latency_hist00:09:271
6831999120,28cyclictest24905-21/usr/sbin/munin23:04:410
6836999033,52cyclictest0-21swapper/122:14:261
6831999022,29cyclictest25302-21/usr/sbin/munin22:10:010
6831999018,38cyclictest4178-21taskset00:17:360
6831998914,44cyclictest28239-21interrupts23:09:490
6831998914,44cyclictest28239-21interrupts23:09:490
597328941,26sleep015-21ksoftirqd/018:55:070
6842998871,11cyclictest898-21cpuspeed22:24:392
683699883,30cyclictest13923-21cron20:59:231
6831998824,28cyclictest9113-21apt-get20:44:390
6831998813,42cyclictest8366-21cat23:30:000
6842998766,14cyclictest13949-21diskmemload21:45:012
683699874,37cyclictest30835-21ntpq22:19:521
683699874,37cyclictest30835-21ntpq22:19:521
683699873,35cyclictest352-21runrttasks20:03:031
683699864,40cyclictest25293-21ssh23:59:241
683699864,37cyclictest11977-21latency_hist21:49:271
683699864,35cyclictest12295-21grep21:49:441
683699863,39cyclictest989-21timerwakeupswit21:30:001
683699863,36cyclictest6760-21find21:39:561
683699863,36cyclictest6760-21find21:39:561
683699863,36cyclictest24577-21find19:49:581
683699863,35cyclictest10657-21latency_hist19:09:271
6831998625,35cyclictest15902-21seq19:24:460
6831998625,35cyclictest15902-21seq19:24:460
6831998624,20cyclictest31387-21awk23:14:510
6831998612,48cyclictest13985-21systemd-run20:59:250
6842998553,10cyclictest181rcu_preempt00:16:452
683699854,35cyclictest18822-21/usr/sbin/munin22:54:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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