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2026-06-24 - 08:21
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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 highest latencies:
System rack6slot5.osadl.org (updated Wed Jun 24, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
253569990274786,4238cyclictest14618-21kworker/0:019:11:410
250242837185,203sleep00-21swapper19:08:220
253569947640,249cyclictest23887-21sed20:30:320
253569946835,372cyclictest13-21rcuc/023:15:510
253569944731,363cyclictest8887-21ssh00:38:070
253569941744,188cyclictest26142-21kworker/u2:122:16:480
253569941642,361cyclictest6664-21ssh21:10:550
253569941237,351cyclictest24410-21ssh21:47:590
253569941150,188cyclictest29183-21ssh21:57:540
253569941020,374cyclictest9110-21grep19:50:340
253569940932,377cyclictest22039-21chrt23:57:580
253569940835,367cyclictest12441-21ssh23:37:560
253569940718,374cyclictest32052-21unixbench_singl19:25:320
253569940635,371cyclictest867-21latency_hist23:15:040
253569940632,360cyclictest23978-21cstates00:01:310
253569940631,375cyclictest13436-21ssh21:25:330
253569940631,351cyclictest31036-21cat20:50:250
253569940534,356cyclictest11-21ksoftirqd/021:00:450
253569940434,347cyclictest11988-21fschecks_count21:21:280
253569940340,348cyclictest5697-21diskmemload23:22:310
253569940321,358cyclictest17291-21ssh21:33:190
253569940241,346cyclictest887-21jbd2/sda1-821:05:040
253569940117,361cyclictest30478-21sh23:08:110
253569939934,341cyclictest29975-21ssh22:00:230
253569939930,195cyclictest337050irq/10-eth000:12:520
253569939845,339cyclictest26220-21ssh00:06:190
253569939835,360cyclictest5697-21diskmemload23:45:350
253569939832,351cyclictest5697-21diskmemload00:34:340
253569939531,351cyclictest27845-21sh23:02:120
253569939332,347cyclictest11-21ksoftirqd/021:44:240
253569939322,357cyclictest11-21ksoftirqd/000:17:370
253569939233,296cyclictest2591-21sh19:35:010
253569939216,362cyclictest11607-21ssh22:29:260
253569939035,355cyclictest2850-21kworker/u2:323:29:020
253569938834,354cyclictest0-21swapper22:08:030
253569938831,357cyclictest0-21swapper22:24:550
253569938631,340cyclictest25513-21ssh21:50:500
253569938537,348cyclictest0-21swapper00:29:340
253569938431,340cyclictest26070-21ssh22:59:510
253569938415,308cyclictest19740-21sed20:20:280
253569938135,346cyclictest0-21swapper19:19:420
253569937934,345cyclictest0-21swapper19:36:320
253569937731,346cyclictest0-21swapper22:34:050
253569937731,346cyclictest0-21swapper20:03:460
253569937631,345cyclictest0-21swapper22:13:290
253569937547,269cyclictest17689-21munin-node20:15:120
253569937545,269cyclictest10265-21munin-node19:55:140
253569937444,269cyclictest5920-21timerwakeupswit19:41:000
253569937343,269cyclictest4882-21runrttasks19:21:000
253569937342,271cyclictest4882-21runrttasks22:53:460
253569937335,153cyclictest19864-21sh23:53:520
253569937328,283cyclictest19628-21ssh21:38:060
253569937235,90cyclictest13437-21gltestperf23:40:280
253569937148,261cyclictest17007-21cstates20:11:000
253569937146,88cyclictest25362-21grep20:35:220
253569937129,280cyclictest22270-21munin-node20:25:450
253569937031,162cyclictest7484-21latency19:45:460
253569936635,90cyclictest28834-21latency_hist20:45:030
253569936432,272cyclictest14731-21sed22:35:340
253569935930,91cyclictest1010-21perl00:21:210
253569935829,91cyclictest4882-21runrttasks20:55:560
253569935634,89cyclictest9217-21munin-node23:30:590
253569935533,89cyclictest10391-21runrttasks21:19:380
253569935432,80cyclictest20270-21runrttasks22:46:210
253569933259,259cyclictest30532-21kworker/u2:322:41:260
253569933155,262cyclictest337050irq/10-eth020:05:430
253569932454,255cyclictest29190-21munin-node20:45:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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