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2026-04-18 - 12:12
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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
Characteristics of the 100 highest latencies:
System rack6slot6 (updated Sat Apr 18, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324379910732953396,53844cyclictest31575-21kworker/u2:023:00:190
324379910723853432,53711cyclictest1374-21rm23:49:540
324379910704953400,53585cyclictest2183-1kworker/u2:221:29:230
324379910693853468,53405cyclictest9-21ksoftirqd/022:32:010
324379910667353418,53164cyclictest0-21swapper21:04:160
324379910664553423,53131cyclictest0-21swapper22:36:530
324379910660253478,53124cyclictest0-21swapper23:22:160
324379910657153444,53062cyclictest9-21ksoftirqd/021:14:190
324379910656353451,53112cyclictest0-21swapper19:49:440
324379910656153397,53074cyclictest0-21swapper00:20:020
324379910656153395,53076cyclictest0-21swapper22:41:340
324379910653053381,53086cyclictest0-21swapper22:16:070
324379910652553475,53050cyclictest0-21swapper00:05:580
324379910651553476,53039cyclictest0-21swapper21:52:400
324379910649753456,53041cyclictest0-21swapper20:08:200
324379910645853406,53052cyclictest0-21swapper00:16:410
324379910644853443,53005cyclictest0-21swapper22:10:150
324379910643353394,53039cyclictest0-21swapper21:37:350
324379910642253430,52992cyclictest0-21swapper00:02:170
324379910632553429,52896cyclictest0-21swapper21:31:440
324379910631553258,53003cyclictest14289-21munin-node19:30:190
324379910629153448,52750cyclictest0-21swapper22:47:260
324379910626253389,52808cyclictest0-21swapper22:51:470
324379910624053474,52766cyclictest0-21swapper20:57:440
324379910623953426,52693cyclictest0-21swapper20:16:020
324379910622853473,52755cyclictest0-21swapper20:48:410
324379910618953444,52710cyclictest0-21swapper21:45:380
324379910617353452,52721cyclictest0-21swapper20:21:540
324379910616153403,52758cyclictest0-21swapper20:03:580
324379910614853396,52752cyclictest0-21swapper19:55:060
324379910592453010,52912cyclictest13030-21ssh21:43:070
324379910513353032,52099cyclictest0-21swapper22:08:440
32437995353126,0cyclictest0-21swapper23:18:040
32437995317728,162cyclictest0-21swapper21:06:370
32437995311527,53088cyclictest0-21swapper20:29:060
324379925031073,1302cyclictest7782-21ssh22:22:580
324379923911098,1226cyclictest3950irq/9-acpi23:32:590
324379923911045,1244cyclictest28502-21ssh21:18:200
324379923181065,1186cyclictest3950irq/9-acpi23:53:350
324379922051009,1104cyclictest3950irq/9-acpi22:57:280
324379921721043,1004cyclictest1907-21snmpd23:43:320
324379920781094,885cyclictest23155-21ssh21:58:010
324379920141032,860cyclictest0-21swapper23:29:380
32437992007949,1024cyclictest0-21swapper19:22:470
324379920001028,877cyclictest0-21swapper19:36:200
32437991995975,999cyclictest0-21swapper23:12:130
324379919851033,862cyclictest0-21swapper20:35:480
324379919821028,934cyclictest0-21swapper21:22:310
324379919651010,921cyclictest0-21swapper00:14:100
32437991923926,963cyclictest0-21swapper19:50:350
32437991917937,960cyclictest0-21swapper20:33:470
324379919131040,782cyclictest0-21swapper20:14:010
32437991789917,847cyclictest26884-21ssh00:26:340
32437991782925,823cyclictest0-21swapper23:39:200
324379917171071,579cyclictest3950irq/9-acpi20:50:220
324379916831017,573cyclictest11-21rcu_preempt22:04:430
324379916511016,599cyclictest1994-21sendmail00:38:170
324379916411094,456cyclictest23981-21kworker/0:022:25:490
324379916201083,445cyclictest5632-21kworker/0:020:42:190
32437991614830,760cyclictest7645-21ssh23:58:260
324379916071092,418cyclictest5146-21ssh23:06:110
324379916031034,504cyclictest3950irq/9-acpi19:27:080
324379914841064,355cyclictest0-21swapper19:42:020
324379914241064,360cyclictest0-21swapper00:32:560
3243799994543,448cyclictest7863-21hwlatdetect-tra19:19:560
3243799862481,378cyclictest30488-21hwlatdetect-tra19:14:340
178872850,2sleep017883-21grep19:09:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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