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2026-08-22 - 14:08
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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 Sat Aug 22, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224682210166,32sleep20-21swapper/219:06:552
224682210166,32sleep20-21swapper/219:06:542
224042205170,23sleep30-21swapper/319:06:033
224042205170,23sleep30-21swapper/319:06:033
224322202169,22sleep10-21swapper/119:06:251
224322202169,22sleep10-21swapper/119:06:241
224312202168,22sleep00-21swapper/019:06:240
224312202168,22sleep00-21swapper/019:06:230
1961021540,2sleep32300699cyclictest20:05:273
2271128464,11sleep30-21swapper/319:10:013
138491730,2ptp4l391rcuc/322:25:203
138491730,2ptp4l391rcuc/322:25:203
23005997035,5cyclictest33-21ksoftirqd/220:00:012
23005996528,10cyclictest33-21ksoftirqd/219:25:112
23005996431,5cyclictest33-21ksoftirqd/222:05:002
23005996429,7cyclictest33-21ksoftirqd/220:25:232
23005996424,11cyclictest33-21ksoftirqd/222:55:212
2300399640,3cyclictest30632-21hddtemp_smartct21:35:160
23005996330,7cyclictest33-21ksoftirqd/220:55:222
23005996330,4cyclictest33-21ksoftirqd/221:35:122
23005996330,4cyclictest33-21ksoftirqd/219:20:232
23005996329,6cyclictest33-21ksoftirqd/223:55:182
23005996327,7cyclictest33-21ksoftirqd/220:40:212
23005996230,4cyclictest33-21ksoftirqd/222:50:002
23005996229,5cyclictest33-21ksoftirqd/200:15:122
23005996228,10cyclictest33-21ksoftirqd/200:30:262
23005996225,6cyclictest33-21ksoftirqd/220:35:232
23005996027,9cyclictest33-21ksoftirqd/223:40:192
23005996026,7cyclictest33-21ksoftirqd/222:35:142
23005996026,4cyclictest33-21ksoftirqd/221:35:012
23005996023,5cyclictest33-21ksoftirqd/223:15:212
23005996022,6cyclictest33-21ksoftirqd/221:25:132
23005996021,4cyclictest33-21ksoftirqd/221:05:232
23005995928,8cyclictest33-21ksoftirqd/200:00:272
23005995928,4cyclictest33-21ksoftirqd/221:20:192
23005995830,7cyclictest33-21ksoftirqd/221:15:182
23005995828,6cyclictest33-21ksoftirqd/221:40:012
23005995828,4cyclictest33-21ksoftirqd/220:05:142
23005995827,9cyclictest33-21ksoftirqd/223:50:162
23005995827,7cyclictest33-21ksoftirqd/222:35:002
23005995826,8cyclictest33-21ksoftirqd/222:25:132
23005995826,8cyclictest33-21ksoftirqd/222:25:132
23005995825,4cyclictest33-21ksoftirqd/219:35:112
23005995825,17cyclictest33-21ksoftirqd/219:50:252
23005995823,3cyclictest33-21ksoftirqd/223:35:162
192912580,6sleep02300399cyclictest21:10:240
23005995726,9cyclictest33-21ksoftirqd/200:10:142
23005995725,6cyclictest33-21ksoftirqd/221:55:262
23005995720,9cyclictest33-21ksoftirqd/222:40:242
23005995718,6cyclictest33-21ksoftirqd/200:35:252
23005995627,6cyclictest33-21ksoftirqd/223:00:182
23005995627,5cyclictest33-21ksoftirqd/200:20:232
23005995627,3cyclictest33-21ksoftirqd/220:45:182
23005995624,6cyclictest33-21ksoftirqd/221:10:162
23005995624,3cyclictest33-21ksoftirqd/223:50:002
23005995623,6cyclictest33-21ksoftirqd/222:15:162
23005995623,3cyclictest33-21ksoftirqd/220:15:182
23005995622,4cyclictest33-21ksoftirqd/220:10:112
23005995621,5cyclictest33-21ksoftirqd/223:20:152
23005995620,4cyclictest33-21ksoftirqd/222:15:002
23005995527,8cyclictest33-21ksoftirqd/200:05:182
23005995527,7cyclictest33-21ksoftirqd/220:50:172
23005995524,10cyclictest33-21ksoftirqd/221:50:212
23005995522,4cyclictest33-21ksoftirqd/220:30:262
23005995522,4cyclictest33-21ksoftirqd/220:30:252
23005995425,7cyclictest33-21ksoftirqd/222:05:192
23005995424,4cyclictest33-21ksoftirqd/223:26:112
23005995423,9cyclictest33-21ksoftirqd/221:00:122
23005995420,5cyclictest33-21ksoftirqd/221:45:252
2300399540,3cyclictest25021-21taskset19:12:160
23005995323,8cyclictest33-21ksoftirqd/222:20:152
2300599524,6cyclictest33-21ksoftirqd/222:50:172
23005995223,9cyclictest33-21ksoftirqd/219:17:202
2300599515,7cyclictest33-21ksoftirqd/220:20:132
2300599515,4cyclictest33-21ksoftirqd/220:00:152
23005995123,8cyclictest33-21ksoftirqd/219:32:402
2300599504,5cyclictest33-21ksoftirqd/223:05:132
23005995020,6cyclictest33-21ksoftirqd/200:25:212
23005995018,5cyclictest33-21ksoftirqd/223:30:112
159982500,2sleep10-21swapper/120:00:161
23005994925,6cyclictest33-21ksoftirqd/219:10:232
23005994924,3cyclictest33-21ksoftirqd/223:11:512
23006994832,13cyclictest41-21ksoftirqd/322:55:093
2300599484,5cyclictest33-21ksoftirqd/219:40:172
23005994712,7cyclictest33-21ksoftirqd/219:46:402
277102450,1sleep30-21swapper/323:40:103
23004994540,3cyclictest25-21ksoftirqd/123:00:001
23006994329,12cyclictest41-21ksoftirqd/300:22:553
23004994331,10cyclictest241ktimersoftd/100:10:241
138491430,0ptp4l401ktimersoftd/320:11:073
134991430,1getstats0-21swapper/322:48:323
23004994230,10cyclictest25-21ksoftirqd/120:50:271
138491420,0ptp4l401ktimersoftd/319:57:143
138491420,0ptp4l401ktimersoftd/319:45:163
138491420,0ptp4l401ktimersoftd/300:11:413
23004994137,2cyclictest25-21ksoftirqd/123:40:001
23004994136,3cyclictest25-21ksoftirqd/120:20:001
138491410,0ptp4l401ktimersoftd/319:15:223
23004994034,3cyclictest25-21ksoftirqd/120:15:011
2300499397,3cyclictest25-21ksoftirqd/121:05:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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