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2026-07-22 - 08:57
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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
Characteristics of the 50 highest latencies:
System rackeslot2.osadl.org (updated Wed Jul 22, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
349909321050,1sleep10-21swapper/123:53:101
35322482670,1sleep03532251-21cut00:16:060
33529242330,1sleep10-21swapper/122:16:031
3106203993214,10cyclictest0-21swapper/021:15:580
34686622300,2sleep30-21swapper/323:31:123
310620399267,14cyclictest0-21swapper/021:50:590
3240591241,2phc2sys0-21swapper/323:36:073
3106204992219,2cyclictest3514883-21grep00:05:021
3106203992211,6cyclictest0-21swapper/023:01:080
3106204992118,2cyclictest3314023-21grep21:50:021
3106204992114,3cyclictest1053-21snmpd22:46:081
3106203992118,2cyclictest3218071-21sh20:40:020
3106203992112,4cyclictest664-21dbus-daemon22:55:010
3106203992111,6cyclictest0-21swapper/023:45:020
3106203992110,6cyclictest0-21swapper/023:58:030
3106203992110,6cyclictest0-21swapper/021:41:010
3106204992017,2cyclictest3471711-21irqcore23:36:041
3106204992017,2cyclictest3106201-21cyclictest00:20:031
3106204992013,3cyclictest3341977-21pmu-power22:06:121
3106203992017,2cyclictest3388508-21systemd-run22:40:010
3106203992012,7cyclictest0-21swapper/021:40:010
31894822190,1sleep00-21swapper/020:16:070
3106205991916,1cyclictest0-21swapper/222:26:092
3106205991916,1cyclictest0-21swapper/220:45:032
3106204991916,2cyclictest3485551-21/usr/sbin/munin23:46:011
3106204991916,2cyclictest3462690-21grep23:30:011
3106204991916,2cyclictest0-21swapper/122:05:031
3106203991917,1cyclictest3508646-21sshd00:01:040
3106203991916,2cyclictest664-21dbus-daemon20:00:010
3106203991916,2cyclictest3307286-21aten2.4-expect21:46:000
3106203991916,2cyclictest0-21swapper/023:30:010
3240591180,2phc2sys0-21swapper/300:23:523
3106205991816,1cyclictest0-21swapper/222:15:022
3106205991815,1cyclictest0-21swapper/223:00:012
3106205991815,1cyclictest0-21swapper/222:51:192
3106205991815,1cyclictest0-21swapper/220:58:282
3106205991815,1cyclictest0-21swapper/219:21:052
3106205991815,1cyclictest0-21swapper/219:15:032
3106205991815,1cyclictest0-21swapper/200:19:552
3106205991814,2cyclictest0-21swapper/221:26:012
3106205991814,2cyclictest0-21swapper/221:11:002
310620499189,4cyclictest0-21swapper/121:56:021
3106204991816,1cyclictest3366304-21/usr/sbin/munin22:25:001
3106204991815,2cyclictest3438305-21grep23:11:101
3106204991815,2cyclictest3199776-21sh20:25:011
3106204991814,2cyclictest0-21swapper/123:20:031
3106204991810,3cyclictest0-21swapper/100:25:031
310620399188,5cyclictest0-21swapper/021:11:040
310620399188,5cyclictest0-21swapper/000:34:240
310620399186,6cyclictest0-21swapper/021:21:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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