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2026-03-21 - 12:06
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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
Characteristics of the 50 highest latencies:
System rackeslot2.osadl.org (updated Sat Mar 21, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140370321570,2sleep30-21swapper/323:58:513
102968021050,1sleep00-21swapper/020:06:280
102968021050,1sleep00-21swapper/020:06:280
98508421030,1sleep0985085-21cut19:26:320
98195221020,1sleep10-21swapper/119:26:291
12499652980,2sleep30-21swapper/322:31:263
14653832320,2sleep30-21swapper/300:34:343
96034899307,12cyclictest960342-21cyclictest21:21:290
960348993013,12cyclictest1428126-21cut00:11:330
960348993010,12cyclictest0-21swapper/000:26:360
960348992718,8cyclictest1108566-21gpgconf21:10:010
960348992617,8cyclictest1095981-21ls21:00:000
96034899261,20cyclictest1996-21runrttasks22:18:110
96034899260,11cyclictest1237931-21kworker/u16:0+rpciod23:13:230
96034899258,12cyclictest4114978-21snmpd21:31:060
960348992512,9cyclictest960342-21cyclictest19:35:000
960348992415,8cyclictest1215799-21ps22:11:310
960348992415,8cyclictest1120020-21kthreadcore21:16:310
96034899241,15cyclictest1299369-21sh22:58:280
96034899240,12cyclictest1186002-21runrttasks21:53:250
96034899240,10cyclictest1343917-21kworker/u16:1+rpciod23:26:120
96034899240,10cyclictest1343917-21kworker/u16:1+rpciod23:26:120
96034899240,10cyclictest1237931-21kworker/u16:0+rpciod22:26:160
96034899240,10cyclictest1126546-21kworker/u16:1+rpciod21:27:530
96034899235,12cyclictest1172039-21irqstats21:46:290
96034899234,13cyclictest1161657-21sh21:40:420
960348992313,9cyclictest1256997-21latency_hist22:35:010
960348992312,9cyclictest993316-21aten_repower_vo19:36:260
960348992311,7cyclictest0-21swapper/019:46:310
96034899230,17cyclictest1317688-21ssh23:09:590
96034899230,13cyclictest1474224-21sh00:39:540
96034899230,13cyclictest1457892-21taskset00:31:040
96034899230,13cyclictest1281520-21taskset22:47:390
96034899230,13cyclictest1257654-21sh22:35:410
96034899230,13cyclictest1237165-21python322:21:360
96034899230,13cyclictest1052803-21python320:21:370
960350992219,1cyclictest0-21swapper/221:40:002
96034899225,9cyclictest0-21swapper/023:22:360
96034899225,9cyclictest0-21swapper/000:16:260
96034899224,12cyclictest1996-21runrttasks00:00:070
960348992213,8cyclictest1065734-21apt-key20:35:010
960348992212,9cyclictest1376289-21unixbench-2d23:41:380
96034899220,17cyclictest1996-21runrttasks23:33:530
96034899220,17cyclictest1395289-21taskset23:54:080
96034899220,17cyclictest1308553-21runrttasks23:04:150
96034899220,17cyclictest1289720-21sh22:51:560
96034899220,17cyclictest1272323-21sh22:41:450
96034899220,17cyclictest1211588-21sh22:06:450
96034899220,17cyclictest1159961-21runrttasks21:38:500
96034899220,17cyclictest1041685-21taskset20:15:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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