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2026-01-11 - 08:06
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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 Sun Jan 11, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
974721318,103sleep019676-21snmpd19:08:430
9010212518,44sleep19016-21ntp_states19:05:011
9962991193,77cyclictest23375-40mandb23:59:261
9962991183,83cyclictest13760-21apt-get22:49:391
9962991123,75cyclictest26388-21apt-get00:04:371
9962991089,76cyclictest32021-21apt-get20:14:501
8642210810,66sleep28653-21/usr/sbin/munin19:04:502
99629910257,38cyclictest28636-21sh22:19:571
99579910159,13cyclictest181rcu_preempt22:31:370
2308621010,6sleep20-21swapper/223:04:432
9957999976,17cyclictest23295-21latency_hist19:49:260
9962999733,57cyclictest0-21swapper/119:59:231
9957999663,11cyclictest181rcu_preempt23:04:110
9962999452,37cyclictest9945-21cyclictest00:12:101
9957999473,14cyclictest9945-21cyclictest00:21:530
996299934,34cyclictest9889-21sort20:46:171
996299914,34cyclictest9185-21date20:44:251
9962999141,44cyclictest9188-21idleruntime-cro21:49:231
9962999141,44cyclictest9188-21idleruntime-cro21:49:231
996299913,37cyclictest2815-21acpi20:24:341
9962999133,37cyclictest181rcu_preempt22:05:011
996299903,40cyclictest11368-21ssh23:39:251
996299903,40cyclictest11368-21ssh23:39:251
996299903,37cyclictest352-21runrttasks00:28:221
996299903,37cyclictest352-21runrttasks00:28:221
996299903,33cyclictest2451-21latency_hist23:24:261
996299902,34cyclictest2287-21timerandwakeup22:29:581
9957999072,12cyclictest18285-21sh21:09:560
9957999072,12cyclictest18285-21sh21:09:560
996299894,38cyclictest17519-21wc22:54:561
9962998938,42cyclictest0-21swapper/119:59:471
9962998936,47cyclictest0-21swapper/123:09:581
996299893,35cyclictest6277-21latency_hist00:24:251
996299893,34cyclictest13688-21sed22:49:271
9957998966,17cyclictest12504-21ssh23:40:010
9957998962,19cyclictest15913-21latency_hist21:04:260
9957998937,21cyclictest29281-21kworker/u18:2-events_unbound23:29:580
9966998871,10cyclictest0-21swapper/221:00:022
9966998870,9cyclictest0-21swapper/220:10:372
9966998870,9cyclictest0-21swapper/220:10:372
996299884,35cyclictest28314-21/usr/sbin/munin20:04:561
996299884,35cyclictest16555-21grep21:04:561
996299884,31cyclictest352-21runrttasks00:17:131
996299883,36cyclictest12084-21unixbench_singl20:50:001
996299883,30cyclictest17406-21grep23:49:251
9962998832,49cyclictest298-21in:imuxsock21:23:241
9966998772,8cyclictest0-21swapper/200:14:442
996299874,33cyclictest21664-21/usr/sbin/munin22:09:521
996299874,30cyclictest13255-21/usr/sbin/munin21:54:561
996299874,30cyclictest13255-21/usr/sbin/munin21:54:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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