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2025-12-23 - 22:42
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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 rackdslot3.osadl.org (updated Tue Dec 23, 2025 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59022233168,21sleep30-21swapper/307:07:263
59022233168,21sleep30-21swapper/307:07:253
59012202169,22sleep20-21swapper/207:07:252
59012202169,22sleep20-21swapper/207:07:252
58482202169,21sleep10-21swapper/107:06:431
58482202169,21sleep10-21swapper/107:06:421
58992201168,22sleep00-21swapper/007:07:230
58992201168,22sleep00-21swapper/007:07:230
682321520,5sleep0639199cyclictest08:15:250
639299611,58cyclictest0-21swapper/111:36:131
134391570,8getstats639499cyclictest08:17:233
42492560,1sleep20-21swapper/211:35:182
639299530,17cyclictest7501-21chrt10:35:111
6391995044,3cyclictest207-21systemd-journal09:19:590
306702490,1sleep20-21swapper/211:20:242
639299481,16cyclictest8006-21ls07:10:291
6392994741,4cyclictest25-21ksoftirqd/108:45:001
639299471,14cyclictest12676-21ls07:20:261
639299462,8cyclictest6365-21apt-get09:25:141
139391460,0ptp4l401ktimersoftd/310:00:273
639399450,43cyclictest0-21swapper/212:15:032
639299450,13cyclictest13550-21apt-get07:25:111
139391430,0ptp4l401ktimersoftd/310:49:353
139391430,0ptp4l401ktimersoftd/309:10:213
139391420,1ptp4l401ktimersoftd/309:15:553
139391420,0ptp4l401ktimersoftd/312:35:173
139391420,0ptp4l401ktimersoftd/312:35:173
139391420,0ptp4l401ktimersoftd/309:50:133
639299412,38cyclictest0-21swapper/112:33:331
639299411,7cyclictest639-21df_inode10:20:151
639299410,8cyclictest13703-21apt-get09:40:111
139391410,1ptp4l401ktimersoftd/309:27:273
639299402,7cyclictest19775-21diskstats11:00:151
6393993934,3cyclictest33-21ksoftirqd/210:35:012
639299391,35cyclictest2601-21cron12:40:001
639299391,35cyclictest2601-21cron12:40:001
639299390,8cyclictest6163-21meminfo10:30:181
639299381,8cyclictest26486-21irqstats10:05:201
6391993832,4cyclictest9-21ksoftirqd/007:45:360
139391380,0ptp4l401ktimersoftd/311:15:193
6393993732,3cyclictest33-21ksoftirqd/211:00:012
6393993731,4cyclictest33-21ksoftirqd/208:08:262
639399370,1cyclictest0-21swapper/211:16:232
639299371,15cyclictest2518-21gnome-shell09:35:581
6394993630,4cyclictest41-21ksoftirqd/311:40:433
6394993630,4cyclictest41-21ksoftirqd/311:09:223
6393993630,4cyclictest33-21ksoftirqd/208:14:402
6393993630,4cyclictest33-21ksoftirqd/208:14:402
6392993630,4cyclictest25-21ksoftirqd/111:11:411
6392993629,4cyclictest25-21ksoftirqd/107:36:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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