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2026-07-04 - 09:57
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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 Jul 04, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11342204170,22sleep30-21swapper/319:08:223
9322202170,22sleep20-21swapper/219:06:282
11122201167,23sleep10-21swapper/119:08:041
11932200166,22sleep00-21swapper/019:09:070
1169721240,4sleep3157899cyclictest19:30:043
138491770,1ptp4l391rcuc/322:20:223
1577996631,9cyclictest33-21ksoftirqd/222:55:002
1577996430,4cyclictest33-21ksoftirqd/219:45:012
1577996429,8cyclictest33-21ksoftirqd/200:05:232
1577996331,4cyclictest33-21ksoftirqd/220:00:232
1577996330,4cyclictest33-21ksoftirqd/220:25:242
1577996329,7cyclictest33-21ksoftirqd/200:25:142
1577996328,4cyclictest33-21ksoftirqd/221:40:222
1577996326,4cyclictest33-21ksoftirqd/222:15:232
157599638,18cyclictest0-21swapper/021:46:030
1577996232,4cyclictest33-21ksoftirqd/221:50:172
1577996230,4cyclictest33-21ksoftirqd/220:45:222
1577996227,7cyclictest33-21ksoftirqd/200:20:202
1577996226,5cyclictest33-21ksoftirqd/222:10:012
157599628,16cyclictest24946-21cstates22:05:120
157599628,16cyclictest24946-21cstates22:05:120
157599625,16cyclictest0-21swapper/000:20:200
1577996127,4cyclictest33-21ksoftirqd/223:00:002
1577996126,11cyclictest33-21ksoftirqd/222:05:002
1577996029,4cyclictest33-21ksoftirqd/222:30:122
1577996029,4cyclictest33-21ksoftirqd/221:05:152
1577996028,10cyclictest33-21ksoftirqd/219:10:242
1577996027,6cyclictest33-21ksoftirqd/223:20:132
1577996027,4cyclictest33-21ksoftirqd/223:50:012
1577996027,4cyclictest33-21ksoftirqd/222:25:132
1577996027,4cyclictest33-21ksoftirqd/220:40:132
1577996026,4cyclictest33-21ksoftirqd/223:10:122
1577996020,10cyclictest33-21ksoftirqd/222:10:142
286772590,4sleep1157699cyclictest22:10:241
1577995929,4cyclictest33-21ksoftirqd/219:35:202
1577995928,9cyclictest33-21ksoftirqd/222:10:012
1577995928,6cyclictest33-21ksoftirqd/223:35:182
1577995928,3cyclictest33-21ksoftirqd/223:55:112
1577995926,4cyclictest33-21ksoftirqd/220:30:122
1577995925,8cyclictest33-21ksoftirqd/220:20:182
1577995921,7cyclictest33-21ksoftirqd/200:15:272
157599599,11cyclictest14136-21grep22:45:250
1577995826,9cyclictest33-21ksoftirqd/223:30:122
1577995826,5cyclictest33-21ksoftirqd/223:25:172
1577995826,4cyclictest33-21ksoftirqd/223:05:132
1577995822,6cyclictest33-21ksoftirqd/219:50:162
1577995822,5cyclictest33-21ksoftirqd/219:20:142
1577995822,4cyclictest33-21ksoftirqd/219:30:122
1577995731,10cyclictest33-21ksoftirqd/221:55:222
1577995729,9cyclictest33-21ksoftirqd/220:50:162
1577995728,10cyclictest33-21ksoftirqd/222:40:272
1577995727,9cyclictest33-21ksoftirqd/219:45:132
1577995726,10cyclictest33-21ksoftirqd/223:55:012
1577995724,6cyclictest33-21ksoftirqd/219:55:202
1577995723,6cyclictest33-21ksoftirqd/220:15:132
1577995720,6cyclictest33-21ksoftirqd/200:30:232
157599576,17cyclictest0-21swapper/019:10:190
157599576,16cyclictest0-21swapper/019:20:200
1577995628,4cyclictest33-21ksoftirqd/220:55:002
1577995627,9cyclictest33-21ksoftirqd/219:25:152
1577995625,9cyclictest33-21ksoftirqd/200:35:192
1577995624,6cyclictest33-21ksoftirqd/221:00:192
1577995621,5cyclictest33-21ksoftirqd/222:45:212
1577995621,5cyclictest33-21ksoftirqd/221:15:262
157599568,7cyclictest6432-21ps21:25:260
157599566,17cyclictest0-21swapper/000:15:240
157599566,16cyclictest0-21swapper/020:15:120
1577995526,10cyclictest33-21ksoftirqd/221:35:252
1577995526,10cyclictest33-21ksoftirqd/221:35:242
157599558,11cyclictest12550-21cstates20:35:120
157599555,15cyclictest0-21swapper/019:15:180
1577995426,8cyclictest33-21ksoftirqd/219:15:122
1577995419,7cyclictest33-21ksoftirqd/221:30:232
157599549,7cyclictest8895-21ptp4l21:30:220
157599549,17cyclictest24785-21expr19:55:130
138491540,1ptp4l401ktimersoftd/323:30:243
138491540,1ptp4l401ktimersoftd/320:06:543
63252530,4sleep341-21ksoftirqd/321:25:253
1577995326,9cyclictest33-21ksoftirqd/222:20:172
1577995325,9cyclictest33-21ksoftirqd/220:10:012
1577995325,7cyclictest33-21ksoftirqd/200:10:192
1577995319,7cyclictest33-21ksoftirqd/220:35:152
157599538,14cyclictest29386-21grep20:05:110
157599536,15cyclictest0-21swapper/022:40:150
157599535,16cyclictest0-21swapper/022:35:150
157599535,16cyclictest0-21swapper/022:35:150
1575995310,7cyclictest2874-21fw_packets00:35:140
1577995215,5cyclictest33-21ksoftirqd/220:10:112
157599529,7cyclictest22578-21df23:05:130
157599527,15cyclictest21254-21mailstats21:55:240
138491520,0ptp4l401ktimersoftd/319:41:453
157799513,6cyclictest33-21ksoftirqd/223:20:002
157799513,5cyclictest33-21ksoftirqd/221:10:162
1577995117,6cyclictest33-21ksoftirqd/221:25:002
157599518,8cyclictest5320-21fschecks_time22:30:150
157599518,8cyclictest13819-21ps21:40:220
157599518,7cyclictest6291-21ps20:20:220
157599518,15cyclictest18706-21grep20:45:250
157599517,10cyclictest22852-21cat20:55:130
157599516,7cyclictest31602-21apt-get20:10:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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