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2026-11-05 - 15:24
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot1.osadl.org (updated Thu Nov 05, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3824286211959,20sleep30-21swapper/307:09:213
3824203211958,21sleep20-21swapper/207:08:152
3818371211959,20sleep10-21swapper/107:05:161
382417429654,33sleep00-21swapper/007:07:530
382452899211,18cyclictest115614-21cat12:20:263
40335402200,1sleep3471rcuc/309:39:393
41039032190,1sleep30-21swapper/310:20:263
39756632190,1sleep30-21swapper/309:00:323
38532312190,1sleep2391ktimers/207:30:262
382452899199,5cyclictest4081129-21grep10:05:293
382452899198,5cyclictest3825153-21cpuspeed_turbos07:10:213
382452899188,6cyclictest90049-21kthreadcore12:05:303
382452899188,5cyclictest3958810-21cut08:50:263
382452899188,5cyclictest3925079-21grep08:25:273
382452899188,5cyclictest10610-21ssh11:20:033
382452899182,10cyclictest4070023-21cut10:00:263
3824527991817,1cyclictest4118786-21ssh10:29:452
3824526991816,2cyclictest301ktimers/108:21:501
3824525991815,3cyclictest151ktimers/012:00:050
382452899178,4cyclictest3855838-21grep07:30:273
382452899177,4cyclictest3842568-21grep07:20:263
382452899176,4cyclictest4111149-21cpuspeed_turbos10:25:233
382452899174,7cyclictest3877573-21aten2.4-expect07:50:093
382452899173,8cyclictest3950627-21cat08:45:233
382452899172,6cyclictest112620-21cut12:20:033
3824527991710,6cyclictest4074165-21grep10:00:352
3824526991715,2cyclictest301ktimers/110:34:341
3824526991710,2cyclictest137955-21apt12:35:011
382452699170,16cyclictest0-21swapper/109:26:471
3824525991715,2cyclictest151ktimers/008:37:140
382452599170,6cyclictest4144404-21munin-plugin-st10:45:020
382452899169,5cyclictest4091303-21unixbench_singl10:10:343
382452899169,2cyclictest65351-21grep11:50:273
382452899169,2cyclictest4129132-21cat10:35:253
382452899169,2cyclictest4053470-21cat09:50:263
382452899169,2cyclictest3984690-21cat09:10:273
382452899169,2cyclictest3910720-21expr08:15:233
382452899169,2cyclictest138092-21wc12:35:033
382452899168,6cyclictest4037703-21tr09:40:273
382452899167,4cyclictest124551-21grep12:25:263
382452899166,5cyclictest4151916-21sh10:47:563
382452899166,4cyclictest38413-21grep11:35:273
382452899164,7cyclictest98845-21cut12:10:253
382452899164,7cyclictest4061910-21cut09:55:283
382452899164,3cyclictest4174915-21cut11:00:263
382452899164,3cyclictest4174915-21cut11:00:253
382452899163,8cyclictest4191552-21grep11:10:283
382452899163,8cyclictest4191552-21grep11:10:273
382452899163,8cyclictest4049848-21runrttasks09:48:043
382452899162,8cyclictest3859279-21kthreadcore07:35:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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