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2026-04-23 - 06:14
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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 Thu Apr 23, 2026 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
230999981394272,3807cyclictest7777-21kworker/0:219:14:130
230999973323907,3411cyclictest7777-21kworker/0:219:26:240
230999966073426,3167cyclictest16143-21kworker/0:120:53:040
230999964923281,3188cyclictest7777-21kworker/0:219:42:320
230999963543308,3031cyclictest16143-21kworker/0:120:56:360
230999962843397,2882cyclictest7777-21kworker/0:219:20:330
230999961983300,2846cyclictest7777-21kworker/0:219:38:510
230999959233215,2697cyclictest7777-21kworker/0:219:16:060
225882824185,177sleep00-21swapper19:06:250
230999948929,445cyclictest7270-21apt-get21:17:040
230999948858,257cyclictest22092-21cstates00:22:210
230999948662,248cyclictest4540-21python23:41:210
230999948534,436cyclictest23778-21ssh23:11:060
230999946422,381cyclictest28375-21ps00:36:380
230999946322,379cyclictest7332-21hddtemp_smartct19:50:590
230999946318,384cyclictest31638-21ssh23:30:230
230999945257,213cyclictest0-21swapper19:57:310
230999945221,370cyclictest10690-21unixbench_singl22:40:480
230999944723,354cyclictest11101-21fschecks_time23:56:280
230999944320,353cyclictest12574-21df_inode00:00:400
230999944163,211cyclictest0-21swapper00:32:520
23099994384,373cyclictest20587-21ssh21:49:160
23099994362,420cyclictest0-21swapper20:03:360
230999943557,211cyclictest0-21swapper23:37:110
230999943555,213cyclictest0-21swapper23:52:390
23099994352,372cyclictest0-21swapper22:27:360
230999943455,364cyclictest0-21swapper20:34:190
230999943358,360cyclictest15545-21munin-node20:15:520
230999943158,358cyclictest6500-21strings23:46:020
230999943156,361cyclictest11629-21ssh21:27:220
230999943037,210cyclictest29643-21awk22:10:260
230999942948,367cyclictest9779-21kworker/0:000:07:030
230999942941,373cyclictest13054-21seq21:30:560
230999942554,357cyclictest15936-21ssh22:52:520
230999942553,87cyclictest0-21swapper20:12:330
230999942547,95cyclictest2907-21ssh22:22:500
23099994241,248cyclictest20094-21ssh00:17:410
23099994236,357cyclictest4253-21lldpd19:46:470
230999942157,350cyclictest0-21swapper21:37:350
23099994191,357cyclictest0-21swapper22:32:410
230999941754,348cyclictest4514-21ssh21:11:100
230999941652,349cyclictest0-21swapper23:03:260
230999941633,368cyclictest17659-21munin-node22:56:330
230999941552,303cyclictest0-21swapper23:19:190
230999941532,360cyclictest28679-21ssh23:22:040
230999941333,361cyclictest25856-19scsi_id20:40:590
230999941234,363cyclictest4894-21runrttasks22:36:260
230999941151,347cyclictest345450irq/10-yenta21:59:140
230999940894,137cyclictest18342-21ssh00:14:410
230999940837,357cyclictest26024-21ssh22:01:070
230999940340,301cyclictest0-21swapper00:27:040
230999940135,351cyclictest17744-21tune2fs21:41:280
230999940038,293cyclictest30206-21strings23:26:040
230999939956,343cyclictest0-21swapper20:37:030
230999939937,87cyclictest28724-21ssh22:06:480
230999939936,340cyclictest26664-21munin-node20:45:130
230999939838,360cyclictest0-21swapper22:49:500
230999939637,359cyclictest0-21swapper20:21:300
230999939635,361cyclictest0-21swapper22:18:150
230999939558,276cyclictest32522-21gltestperf21:00:240
230999939217,360cyclictest11-21ksoftirqd/021:51:370
230999938320,349cyclictest99072sleep021:24:390
230999937536,278cyclictest4894-21runrttasks19:34:390
230999937335,278cyclictest0-21swapper20:29:330
230999936934,274cyclictest4894-21runrttasks20:05:160
230999936633,279cyclictest3392-21diskmemload23:09:410
230999936435,268cyclictest3395-21latency_hist21:10:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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