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2026-04-06 - 19:56
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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 rackdslot4.osadl.org (updated Mon Apr 06, 2026 12:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
84892206172,23sleep10-21swapper/107:08:581
84432203170,22sleep20-21swapper/207:08:232
138591201167,23phc2sys0-21swapper/307:09:573
63632199166,22sleep00-21swapper/007:05:110
946321620,6sleep1886899cyclictest08:15:161
946321620,6sleep1886899cyclictest08:15:161
1522921370,4sleep2886999cyclictest09:30:192
138491710,1ptp4l401ktimersoftd/310:59:283
325772600,3sleep10-21swapper/112:15:211
8869995928,6cyclictest33-21ksoftirqd/208:45:162
8869995823,6cyclictest33-21ksoftirqd/210:50:192
886899581,17cyclictest7811-21/usr/sbin/munin08:10:241
8869995729,7cyclictest33-21ksoftirqd/209:45:182
8869995724,6cyclictest33-21ksoftirqd/210:20:132
8869995528,3cyclictest33-21ksoftirqd/211:05:182
8869995524,9cyclictest33-21ksoftirqd/210:45:002
8869995512,12cyclictest33-21ksoftirqd/208:40:262
8869995425,3cyclictest33-21ksoftirqd/208:20:002
8869995425,3cyclictest33-21ksoftirqd/208:20:002
8869995421,6cyclictest33-21ksoftirqd/210:15:002
886999540,2cyclictest121rcu_preempt10:10:002
138491540,1ptp4l20781-21ls09:40:233
8869995326,4cyclictest33-21ksoftirqd/209:35:222
8869995323,7cyclictest33-21ksoftirqd/212:00:182
8869995323,4cyclictest33-21ksoftirqd/210:05:012
8869995322,4cyclictest33-21ksoftirqd/208:50:252
8869995321,10cyclictest33-21ksoftirqd/207:25:262
8869995320,6cyclictest33-21ksoftirqd/211:55:222
8869995320,6cyclictest33-21ksoftirqd/211:40:182
8869995320,5cyclictest33-21ksoftirqd/211:10:272
8869995319,6cyclictest33-21ksoftirqd/209:10:232
8869995319,4cyclictest33-21ksoftirqd/211:15:262
8869995318,7cyclictest33-21ksoftirqd/211:55:012
8869995318,6cyclictest33-21ksoftirqd/210:45:162
8869995318,5cyclictest33-21ksoftirqd/212:20:222
8869995315,6cyclictest33-21ksoftirqd/211:20:242
8869995315,4cyclictest33-21ksoftirqd/208:05:172
117552530,5sleep09-21ksoftirqd/011:35:120
8869995220,6cyclictest33-21ksoftirqd/211:30:242
8869995220,4cyclictest33-21ksoftirqd/207:35:122
8869995219,6cyclictest33-21ksoftirqd/209:05:142
8869995219,6cyclictest33-21ksoftirqd/209:00:012
8869995218,6cyclictest33-21ksoftirqd/211:35:112
8869995218,6cyclictest33-21ksoftirqd/209:25:272
8869995218,6cyclictest33-21ksoftirqd/208:30:192
8869995217,6cyclictest33-21ksoftirqd/212:05:192
8869995215,6cyclictest33-21ksoftirqd/208:15:002
303352520,2sleep30-21swapper/312:10:223
8869995123,3cyclictest33-21ksoftirqd/207:50:082
8869995119,6cyclictest33-21ksoftirqd/208:00:252
8869995118,5cyclictest33-21ksoftirqd/209:15:242
8869995117,5cyclictest33-21ksoftirqd/207:30:252
8869995116,6cyclictest33-21ksoftirqd/207:10:172
8869995116,10cyclictest33-21ksoftirqd/211:45:172
8869995115,6cyclictest33-21ksoftirqd/208:20:242
8869995115,5cyclictest33-21ksoftirqd/210:55:162
147622510,4sleep314768-21irqrtprio10:35:193
134991510,6getstats0-21swapper/309:06:453
8869995022,4cyclictest33-21ksoftirqd/209:00:122
8869995021,4cyclictest33-21ksoftirqd/208:35:232
8869995020,6cyclictest33-21ksoftirqd/211:30:012
8869995019,3cyclictest33-21ksoftirqd/210:25:262
8869995018,6cyclictest33-21ksoftirqd/207:45:142
8869995018,5cyclictest33-21ksoftirqd/209:25:002
8869995018,5cyclictest33-21ksoftirqd/208:25:132
8869995015,6cyclictest33-21ksoftirqd/211:00:132
8869995015,5cyclictest33-21ksoftirqd/209:55:252
314112500,2sleep00-21swapper/010:05:110
8869994921,3cyclictest33-21ksoftirqd/207:20:202
8869994920,4cyclictest33-21ksoftirqd/207:40:242
8869994915,4cyclictest33-21ksoftirqd/212:35:152
8869994914,6cyclictest33-21ksoftirqd/212:15:152
134991490,6getstats0-21swapper/309:11:453
8869994824,6cyclictest33-21ksoftirqd/212:10:152
8869994818,9cyclictest33-21ksoftirqd/210:35:262
8869994818,5cyclictest33-21ksoftirqd/207:55:142
259132480,2sleep30-21swapper/312:00:513
886999472,6cyclictest33-21ksoftirqd/212:25:162
8869994716,6cyclictest33-21ksoftirqd/210:15:292
8869994715,6cyclictest33-21ksoftirqd/207:15:122
8869994615,9cyclictest33-21ksoftirqd/210:30:262
8869994613,4cyclictest33-21ksoftirqd/209:50:142
886899460,9cyclictest21303-21cat11:55:011
8869994513,5cyclictest33-21ksoftirqd/209:40:162
8870994432,10cyclictest41-21ksoftirqd/308:17:593
8870994432,10cyclictest41-21ksoftirqd/308:17:593
886899441,8cyclictest2315-21gnome-shell08:31:581
886999430,4cyclictest8739-21perf12:35:012
138491430,0ptp4l401ktimersoftd/307:53:053
138491420,0ptp4l401ktimersoftd/307:44:563
886899410,8cyclictest9795-21perl09:20:151
886899410,17cyclictest2726-21python08:00:241
138491410,0ptp4l401ktimersoftd/312:20:293
138491410,0ptp4l401ktimersoftd/311:45:053
886899401,8cyclictest27287-21memory07:45:211
886899401,7cyclictest19324-21hddtemp_smartct07:30:151
886899401,7cyclictest16743-21df_inode07:25:141
886899401,16cyclictest2315-21gnome-shell11:11:591
886899400,8cyclictest30784-21users10:00:281
8868993933,3cyclictest11895-21hwlatdetect11:35:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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