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2025-12-04 - 06:43
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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 Dec 04, 2025 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137191207173,22phc2sys0-21swapper/319:07:473
187892201168,22sleep20-21swapper/219:09:572
187452201168,22sleep10-21swapper/119:09:241
184752201167,23sleep00-21swapper/019:06:010
59298810,12rtkit-daemon0-21swapper/300:30:143
136991780,6ptp4l401ktimersoftd/320:45:213
19087996123,3cyclictest33-21ksoftirqd/219:20:232
71342600,3sleep30-21swapper/320:55:283
19087996027,11cyclictest33-21ksoftirqd/221:20:212
19087996026,6cyclictest33-21ksoftirqd/219:25:252
19087996024,4cyclictest33-21ksoftirqd/223:40:152
19087996024,4cyclictest33-21ksoftirqd/223:20:222
19087996023,4cyclictest33-21ksoftirqd/220:50:232
19087995929,6cyclictest33-21ksoftirqd/222:45:002
19087995924,5cyclictest33-21ksoftirqd/221:40:242
19087995924,4cyclictest33-21ksoftirqd/219:55:232
19087995921,4cyclictest33-21ksoftirqd/200:00:262
19087995921,10cyclictest33-21ksoftirqd/200:35:222
19087995824,6cyclictest33-21ksoftirqd/222:20:262
19087995823,5cyclictest33-21ksoftirqd/223:10:242
19087995823,10cyclictest33-21ksoftirqd/222:55:232
19087995729,5cyclictest33-21ksoftirqd/221:50:172
19087995726,7cyclictest33-21ksoftirqd/223:05:152
19087995726,6cyclictest33-21ksoftirqd/222:25:172
19087995724,5cyclictest33-21ksoftirqd/200:25:202
19087995723,5cyclictest33-21ksoftirqd/221:00:122
19087995629,7cyclictest33-21ksoftirqd/220:45:182
19087995623,5cyclictest33-21ksoftirqd/221:05:282
19087995622,6cyclictest33-21ksoftirqd/220:35:142
19087995622,5cyclictest33-21ksoftirqd/220:15:242
1908799555,6cyclictest33-21ksoftirqd/219:20:002
19087995528,8cyclictest33-21ksoftirqd/221:25:282
19087995525,5cyclictest33-21ksoftirqd/220:05:222
19087995524,5cyclictest33-21ksoftirqd/222:35:152
19087995523,6cyclictest33-21ksoftirqd/223:35:262
19087995522,3cyclictest33-21ksoftirqd/220:00:152
19087995425,9cyclictest33-21ksoftirqd/223:00:262
19087995425,5cyclictest33-21ksoftirqd/200:10:152
19087995423,7cyclictest33-21ksoftirqd/222:15:292
19087995423,7cyclictest33-21ksoftirqd/222:15:292
19087995423,6cyclictest33-21ksoftirqd/223:30:122
19087995422,5cyclictest33-21ksoftirqd/223:15:142
19087995422,5cyclictest33-21ksoftirqd/223:15:142
19087995420,3cyclictest33-21ksoftirqd/221:32:372
19087995325,6cyclictest33-21ksoftirqd/200:33:132
19087995323,7cyclictest33-21ksoftirqd/219:10:132
19087995320,7cyclictest33-21ksoftirqd/221:45:202
19087995320,7cyclictest33-21ksoftirqd/221:45:192
19087995320,6cyclictest33-21ksoftirqd/200:15:262
19087995320,6cyclictest33-21ksoftirqd/200:15:262
19087995320,5cyclictest33-21ksoftirqd/200:05:162
136991530,1ptp4l401ktimersoftd/319:36:503
34772520,2sleep00-21swapper/020:50:200
19087995226,5cyclictest33-21ksoftirqd/220:25:242
19087995223,5cyclictest33-21ksoftirqd/221:55:142
19087995217,7cyclictest33-21ksoftirqd/200:22:052
1908799515,7cyclictest33-21ksoftirqd/219:35:242
19087995124,8cyclictest33-21ksoftirqd/220:20:172
136991510,1ptp4l401ktimersoftd/320:06:033
1908799506,3cyclictest33-21ksoftirqd/222:50:152
1908799503,4cyclictest17590-21latency_hist20:15:002
19087995022,8cyclictest33-21ksoftirqd/221:15:232
19087995018,5cyclictest33-21ksoftirqd/222:05:292
1908799492,8cyclictest33-21ksoftirqd/222:00:232
1908799492,6cyclictest33-21ksoftirqd/222:15:002
1908799491,6cyclictest33-21ksoftirqd/220:55:222
59502470,2sleep35951-21grep19:50:133
1908799475,7cyclictest33-21ksoftirqd/223:50:232
1908799473,8cyclictest33-21ksoftirqd/223:45:212
1908799473,8cyclictest33-21ksoftirqd/223:45:202
1908799473,4cyclictest33-21ksoftirqd/222:30:262
19087994730,6cyclictest33-21ksoftirqd/219:45:222
19087994719,6cyclictest33-21ksoftirqd/219:43:092
19087994717,8cyclictest33-21ksoftirqd/220:40:012
1908799464,5cyclictest33-21ksoftirqd/223:30:012
1908799463,7cyclictest33-21ksoftirqd/219:30:142
1908799462,7cyclictest33-21ksoftirqd/220:30:142
19087994619,9cyclictest33-21ksoftirqd/221:10:262
1908799461,6cyclictest33-21ksoftirqd/223:55:222
1908799442,5cyclictest33-21ksoftirqd/222:45:112
1908799442,5cyclictest33-21ksoftirqd/222:45:112
19087994425,9cyclictest33-21ksoftirqd/219:50:192
136991440,1ptp4l401ktimersoftd/319:45:183
136991430,0ptp4l401ktimersoftd/319:59:173
1908799422,5cyclictest33-21ksoftirqd/221:35:142
136991420,0ptp4l401ktimersoftd/323:41:503
136991410,0ptp4l401ktimersoftd/321:05:273
59298390,28rtkit-daemon41-21ksoftirqd/300:05:283
19086993934,3cyclictest850-21cron19:40:001
19086993930,6cyclictest25-21ksoftirqd/100:25:011
136991390,0ptp4l401ktimersoftd/322:20:013
136991390,0ptp4l401ktimersoftd/320:11:143
19088993834,2cyclictest41-21ksoftirqd/319:19:173
19086993833,3cyclictest25-21ksoftirqd/122:21:411
136991380,1ptp4l401ktimersoftd/322:36:203
19088993631,3cyclictest24928-21cron20:30:013
19088993630,4cyclictest41-21ksoftirqd/322:15:463
19088993630,4cyclictest41-21ksoftirqd/322:15:463
19086993630,4cyclictest25-21ksoftirqd/123:06:471
19086993630,4cyclictest25-21ksoftirqd/121:25:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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