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2026-09-17 - 11:52
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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 100 highest latencies:
System rackdslot3.osadl.org (updated Thu Sep 17, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1541423540,6sleep30-21swapper/319:09:213
75322710,5sleep2718-21sh19:08:282
1191622240,4sleep1241ktimersoftd/119:09:161
210022170,7sleep02108-21tee19:09:580
1878521430,2sleep3466699cyclictest19:11:593
3108321410,5sleep231088-21tee19:10:422
293372830,3sleep129295-21sh19:12:121
4665996520,4cyclictest33-21ksoftirqd/219:51:212
466399656,57cyclictest0-21swapper/121:00:331
236932630,6sleep3466699cyclictest00:30:153
4665996030,3cyclictest33-21ksoftirqd/219:45:252
4665996026,9cyclictest33-21ksoftirqd/220:25:132
299542600,2sleep00-21swapper/021:20:180
299542600,2sleep00-21swapper/021:20:180
4665995929,6cyclictest33-21ksoftirqd/219:30:142
4665995921,6cyclictest33-21ksoftirqd/200:35:222
4665995825,4cyclictest33-21ksoftirqd/200:05:302
4665995823,4cyclictest33-21ksoftirqd/222:20:212
285072580,1sleep00-21swapper/020:10:170
285072580,1sleep00-21swapper/020:10:170
4665995725,6cyclictest33-21ksoftirqd/219:40:142
4665995725,3cyclictest33-21ksoftirqd/223:50:122
4665995724,5cyclictest33-21ksoftirqd/219:20:012
4665995722,6cyclictest33-21ksoftirqd/220:00:142
4666995612,28cyclictest1317-21runrttasks21:58:333
4665995625,4cyclictest33-21ksoftirqd/220:40:122
466399560,54cyclictest0-21swapper/122:10:331
4665995530,7cyclictest33-21ksoftirqd/222:05:132
4665995527,3cyclictest33-21ksoftirqd/220:50:202
4665995524,3cyclictest33-21ksoftirqd/221:30:112
4665995425,3cyclictest33-21ksoftirqd/223:00:142
4665995423,10cyclictest33-21ksoftirqd/222:50:252
4665995423,10cyclictest33-21ksoftirqd/222:50:252
4665995422,5cyclictest33-21ksoftirqd/219:20:252
4665995419,4cyclictest33-21ksoftirqd/222:30:122
466599532,2cyclictest33-21ksoftirqd/219:30:002
4665995322,5cyclictest33-21ksoftirqd/221:25:162
4665995227,8cyclictest33-21ksoftirqd/219:55:132
4665995223,4cyclictest33-21ksoftirqd/221:55:232
466599517,3cyclictest33-21ksoftirqd/221:45:202
466599516,3cyclictest33-21ksoftirqd/223:35:002
466599516,3cyclictest33-21ksoftirqd/223:35:002
4665995121,6cyclictest33-21ksoftirqd/219:35:132
466699501,47cyclictest6947-21kworker/3:023:31:333
466699501,47cyclictest6947-21kworker/3:023:31:333
4665995025,6cyclictest33-21ksoftirqd/220:20:132
4665995025,3cyclictest33-21ksoftirqd/222:04:512
4665995020,4cyclictest33-21ksoftirqd/223:55:122
4665995018,12cyclictest33-21ksoftirqd/223:24:592
4665995017,5cyclictest33-21ksoftirqd/222:25:162
4665994822,3cyclictest33-21ksoftirqd/200:10:242
4665994820,6cyclictest33-21ksoftirqd/221:40:142
4665994820,6cyclictest33-21ksoftirqd/220:55:182
4665994820,4cyclictest33-21ksoftirqd/220:10:172
4665994820,4cyclictest33-21ksoftirqd/220:10:172
4665994816,5cyclictest33-21ksoftirqd/220:05:132
4665994813,6cyclictest33-21ksoftirqd/221:20:132
4665994813,6cyclictest33-21ksoftirqd/221:20:132
466699472,42cyclictest27628-21latency_hist20:10:003
4665994717,8cyclictest33-21ksoftirqd/220:30:172
4665994717,7cyclictest33-21ksoftirqd/223:05:122
4665994714,5cyclictest33-21ksoftirqd/222:40:152
4665994714,3cyclictest33-21ksoftirqd/223:10:142
4665994713,3cyclictest33-21ksoftirqd/200:25:192
134391470,7getstats466699cyclictest00:11:103
466599469,7cyclictest33-21ksoftirqd/200:20:012
466599466,2cyclictest33-21ksoftirqd/223:25:152
466599465,3cyclictest33-21ksoftirqd/222:45:132
466599464,3cyclictest33-21ksoftirqd/222:55:022
4665994640,3cyclictest29030-21turbostat.cron21:20:002
466599463,2cyclictest33-21ksoftirqd/223:40:272
4665994618,3cyclictest33-21ksoftirqd/221:00:102
4665994617,6cyclictest33-21ksoftirqd/200:30:152
466599455,6cyclictest33-21ksoftirqd/220:15:162
466599455,3cyclictest33-21ksoftirqd/221:35:142
466599454,2cyclictest33-21ksoftirqd/223:45:232
4665994521,8cyclictest33-21ksoftirqd/222:15:232
466599444,2cyclictest33-21ksoftirqd/221:05:202
466599443,2cyclictest33-21ksoftirqd/222:35:222
4665994414,6cyclictest33-21ksoftirqd/223:35:152
4665994410,8cyclictest33-21ksoftirqd/221:12:282
466399440,42cyclictest0-21swapper/122:00:341
466599435,2cyclictest33-21ksoftirqd/223:15:422
4665994318,7cyclictest33-21ksoftirqd/220:45:182
466599431,2cyclictest121rcu_preempt20:35:272
4663994326,14cyclictest25-21ksoftirqd/122:43:591
4663994316,25cyclictest0-21swapper/119:19:031
4663994313,28cyclictest0-21swapper/123:30:431
4663994313,28cyclictest0-21swapper/123:30:431
139391430,0ptp4l401ktimersoftd/322:45:213
466599425,2cyclictest33-21ksoftirqd/200:00:222
466599424,3cyclictest33-21ksoftirqd/200:20:152
4663994237,3cyclictest27627-21sh20:10:001
4663994213,27cyclictest0-21swapper/100:10:431
139391420,0ptp4l401ktimersoftd/322:05:273
466599415,5cyclictest33-21ksoftirqd/221:50:102
466599415,5cyclictest33-21ksoftirqd/221:50:092
57898400,2rtkit-daemon0-21swapper/120:20:121
4666994010,28cyclictest18957-21kworker/3:222:02:343
466699400,37cyclictest3791-21cron21:35:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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