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2026-09-08 - 13:56
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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 Tue Sep 08, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307682206172,23sleep30-21swapper/319:09:033
305732203170,21sleep20-21swapper/219:06:372
305402201168,22sleep10-21swapper/119:06:121
305082199165,22sleep00-21swapper/019:05:460
630221620,6sleep03113399cyclictest23:40:270
2589321380,7sleep13113499cyclictest00:20:231
138491790,0ptp4l391rcuc/300:35:123
138491780,1ptp4l21168-21ls00:10:283
138491730,1ptp4l391rcuc/323:20:173
31135997135,3cyclictest33-21ksoftirqd/200:35:272
138491650,1ptp4l401ktimersoftd/322:45:243
31135996430,5cyclictest33-21ksoftirqd/222:00:222
31135996130,4cyclictest33-21ksoftirqd/223:20:182
31135996034,6cyclictest33-21ksoftirqd/222:15:002
31135996029,4cyclictest33-21ksoftirqd/223:00:002
31135996029,4cyclictest33-21ksoftirqd/223:00:002
31135996016,4cyclictest33-21ksoftirqd/222:42:542
31135995921,7cyclictest33-21ksoftirqd/219:30:252
138491590,1ptp4l401ktimersoftd/300:05:253
31135995830,7cyclictest33-21ksoftirqd/220:15:272
30752580,4sleep33113699cyclictest22:30:213
31135995727,4cyclictest33-21ksoftirqd/220:15:012
31135995727,4cyclictest33-21ksoftirqd/200:00:002
31135995727,4cyclictest33-21ksoftirqd/200:00:002
31135995723,7cyclictest33-21ksoftirqd/222:25:242
31135995723,3cyclictest33-21ksoftirqd/200:20:212
31135995627,3cyclictest33-21ksoftirqd/221:40:152
31135995626,4cyclictest33-21ksoftirqd/220:25:162
31135995618,10cyclictest33-21ksoftirqd/221:35:192
31135995529,7cyclictest33-21ksoftirqd/200:35:002
31135995526,7cyclictest33-21ksoftirqd/200:20:002
31135995525,3cyclictest33-21ksoftirqd/223:40:232
31135995427,7cyclictest33-21ksoftirqd/220:00:002
31135995425,3cyclictest33-21ksoftirqd/220:35:232
31135995421,7cyclictest33-21ksoftirqd/222:45:202
31135995326,3cyclictest33-21ksoftirqd/223:30:222
31135995326,3cyclictest33-21ksoftirqd/200:15:002
31135995325,7cyclictest33-21ksoftirqd/223:50:002
31135995322,7cyclictest33-21ksoftirqd/219:10:142
31135995321,4cyclictest33-21ksoftirqd/222:30:142
31135995320,4cyclictest33-21ksoftirqd/219:25:182
31135995319,8cyclictest33-21ksoftirqd/223:10:002
31135995225,6cyclictest33-21ksoftirqd/200:25:232
31135995216,5cyclictest33-21ksoftirqd/222:20:122
138491520,0ptp4l401ktimersoftd/323:26:293
3113599517,3cyclictest33-21ksoftirqd/222:40:002
31135995122,3cyclictest33-21ksoftirqd/221:00:182
31135995119,9cyclictest33-21ksoftirqd/219:40:002
31135995116,6cyclictest33-21ksoftirqd/221:10:002
31135995113,6cyclictest33-21ksoftirqd/219:50:182
31135995025,6cyclictest33-21ksoftirqd/221:10:142
31135995025,6cyclictest33-21ksoftirqd/219:25:012
31135995022,6cyclictest33-21ksoftirqd/223:10:282
31135995022,6cyclictest33-21ksoftirqd/222:50:222
31135995016,6cyclictest33-21ksoftirqd/220:20:122
31135994924,6cyclictest33-21ksoftirqd/220:55:182
31135994923,6cyclictest33-21ksoftirqd/223:20:002
31135994917,4cyclictest33-21ksoftirqd/220:00:132
3113599491,3cyclictest33-21ksoftirqd/221:30:002
31135994913,7cyclictest33-21ksoftirqd/219:15:142
31135994913,6cyclictest33-21ksoftirqd/221:20:132
31135994821,4cyclictest33-21ksoftirqd/221:54:042
31135994817,6cyclictest33-21ksoftirqd/220:50:152
3113599474,3cyclictest33-21ksoftirqd/223:25:262
31135994721,3cyclictest33-21ksoftirqd/220:45:402
31135994716,9cyclictest33-21ksoftirqd/219:45:182
31135994716,7cyclictest33-21ksoftirqd/222:15:132
31135994715,6cyclictest33-21ksoftirqd/221:55:222
31135994710,6cyclictest33-21ksoftirqd/223:45:162
3113599465,3cyclictest33-21ksoftirqd/223:35:152
31135994611,4cyclictest33-21ksoftirqd/220:30:212
301782460,1sleep10-21swapper/123:25:191
138491460,0ptp4l401ktimersoftd/321:58:083
135191460,7getstats3113699cyclictest21:13:413
31135994521,6cyclictest33-21ksoftirqd/221:15:222
3113599451,2cyclictest33-21ksoftirqd/221:30:172
3113599451,2cyclictest13779-21tr19:40:112
3113599442,2cyclictest33-21ksoftirqd/200:05:212
31135994415,8cyclictest33-21ksoftirqd/220:45:002
3113599441,2cyclictest33-21ksoftirqd/222:10:012
31135994411,5cyclictest33-21ksoftirqd/220:05:152
31135994411,5cyclictest33-21ksoftirqd/220:05:152
138491440,0ptp4l401ktimersoftd/323:05:173
31135994312,9cyclictest33-21ksoftirqd/200:00:272
138491430,0ptp4l401ktimersoftd/322:20:523
138491430,0ptp4l401ktimersoftd/322:01:343
31135994215,9cyclictest33-21ksoftirqd/223:00:152
31135994215,9cyclictest33-21ksoftirqd/223:00:152
3113499420,1cyclictest0-21swapper/120:46:531
138491420,0ptp4l401ktimersoftd/320:18:153
138491420,0ptp4l401ktimersoftd/300:23:233
3113599413,6cyclictest33-21ksoftirqd/221:45:282
3113499418,3cyclictest179032grep21:55:191
31133994033,3cyclictest420-21rs:main0
138491400,0ptp4l401ktimersoftd/321:45:323
3113499390,1cyclictest0-21swapper/123:58:231
3113499390,1cyclictest0-21swapper/123:58:231
138491390,1ptp4l401ktimersoftd/322:25:233
31134993730,4cyclictest25-21ksoftirqd/122:50:491
3113499370,2cyclictest121rcu_preempt19:50:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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