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2025-12-21 - 01:55
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Sun Dec 21, 2025 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3132821110,6chrt31331-21sed23:00:020
13758991017,74cyclictest0-21swapper/021:40:120
13758999450,25cyclictest14-21ksoftirqd/022:45:150
1285329232,41sleep00-21swapper/019:05:280
118892910,6chrt11893-21needreboot23:35:311
13762998861,18cyclictest26-21ksoftirqd/100:00:131
13762998660,16cyclictest26-21ksoftirqd/120:35:151
13762998558,19cyclictest26-21ksoftirqd/121:25:171
13762998556,20cyclictest26-21ksoftirqd/120:25:161
13762998155,17cyclictest26-21ksoftirqd/122:00:121
316172800,6chrt31618-21/usr/sbin/munin00:30:320
1376299809,57cyclictest16107-21apt-get19:15:151
1376299807,59cyclictest26944-21apt-get19:45:151
13762997950,18cyclictest26-21ksoftirqd/122:45:121
1376299777,59cyclictest2511-21apt-get23:10:131
1376299777,56cyclictest25636-21apt-get00:15:151
1376299776,58cyclictest20832-21apt-get22:30:131
1376299776,55cyclictest19611-21apt-get19:25:161
13762997747,23cyclictest26-21ksoftirqd/120:45:131
13758997713,19cyclictest171rcuc/022:15:000
1355727729,38sleep10-21swapper/119:09:141
1376299768,54cyclictest27399-21apt-get00:20:131
1376299767,55cyclictest17869-21apt-get19:20:161
1376299767,55cyclictest17869-21apt-get19:20:161
13758997612,47cyclictest0-21swapper/022:20:150
1376299757,56cyclictest3287-21apt-get20:10:181
1376299756,54cyclictest24386-21apt-get22:40:141
13762997544,20cyclictest26-21ksoftirqd/123:55:121
1376299746,54cyclictest31415-21apt-get23:00:151
1376299736,53cyclictest28684-21apt-get19:50:151
13762997345,20cyclictest26-21ksoftirqd/120:00:141
13762997312,50cyclictest0-21swapper/122:15:151
1376299727,52cyclictest14123-21apt-get20:40:131
1376299725,60cyclictest0-21swapper/123:40:101
13762997214,46cyclictest0-21swapper/121:35:131
1375899729,47cyclictest0-21swapper/020:15:150
1375899727,48cyclictest0-21swapper/019:40:140
1376299717,50cyclictest27866-21apt-get22:50:161
1376299716,51cyclictest5025-21apt-get20:15:161
1376299715,54cyclictest6786-21apt-get20:20:161
13762997144,19cyclictest26-21ksoftirqd/120:50:121
13762997113,47cyclictest0-21swapper/121:45:131
13762997113,47cyclictest0-21swapper/121:30:141
1375899718,49cyclictest0-21swapper/019:35:160
1375899718,49cyclictest0-21swapper/019:35:160
1375899718,13cyclictest0-21swapper/000:25:140
1376299707,50cyclictest720-21apt-get23:05:151
1376299707,49cyclictest25206-21apt-get19:40:161
1376299706,58cyclictest0-21swapper/119:55:351
1376299706,58cyclictest0-21swapper/119:55:351
1376299706,54cyclictest23398-21apt-get19:35:151
1376299706,54cyclictest23398-21apt-get19:35:141
1376299706,52cyclictest26374-21apt-get21:15:171
1376299706,51cyclictest16823-21apt-get23:50:121
13762997021,40cyclictest448-21dbus-daemon20:10:011
13762997017,44cyclictest0-21swapper/121:05:151
13762997013,44cyclictest0-21swapper/121:40:141
13762997011,49cyclictest0-21swapper/100:25:161
13762997011,48cyclictest0-21swapper/123:30:141
13762997011,48cyclictest0-21swapper/122:55:141
13762997010,48cyclictest19093-21apt-get22:25:161
13758997013,20cyclictest171rcuc/022:39:000
1376299696,48cyclictest22578-21apt-get22:35:141
13762996914,44cyclictest0-21swapper/100:30:131
13762996913,45cyclictest0-21swapper/121:10:131
13762996912,48cyclictest0-21swapper/122:05:161
13758996911,20cyclictest171rcuc/020:10:000
1376299687,49cyclictest6016-21apt-get23:20:161
1376299686,50cyclictest7752-21apt-get23:25:151
13758996843,16cyclictest925-21apt-get21:35:140
13758996823,30cyclictest14-21ksoftirqd/022:00:130
13758996813,48cyclictest171rcuc/023:40:060
1376299675,39cyclictest0-21swapper/120:31:361
13762996723,38cyclictest448-21dbus-daemon22:15:001
13762996714,42cyclictest0-21swapper/119:30:161
13762996712,46cyclictest0-21swapper/121:50:221
13762996712,42cyclictest0-21swapper/122:20:131
1376299667,49cyclictest28134-21apt-get21:20:121
1376299667,47cyclictest13850-21apt-get19:10:151
1376299666,49cyclictest15092-21apt-get23:45:171
1375899668,23cyclictest14-21ksoftirqd/020:55:200
1375899665,13cyclictest0-21swapper/023:30:120
1376299656,47cyclictest8256-21apt-get21:55:151
1376299654,54cyclictest23798-21latency_hist00:10:001
1376299653,54cyclictest4472-21ls23:15:191
13762996512,42cyclictest0-21swapper/121:00:131
1376299645,49cyclictest19343-21apt-get20:55:161
1376299643,55cyclictest32711-21head00:35:151
13762996418,39cyclictest250-21systemd-journal00:12:401
1375899648,43cyclictest0-21swapper/020:30:130
1375899648,23cyclictest14-21ksoftirqd/021:20:010
1375899647,44cyclictest0-21swapper/019:20:140
1375899647,44cyclictest0-21swapper/019:20:130
1375899646,45cyclictest0-21swapper/022:53:080
13758996426,15cyclictest14-21ksoftirqd/023:40:010
13758996426,15cyclictest14-21ksoftirqd/021:09:000
13758996410,41cyclictest0-21swapper/023:15:130
1375899638,23cyclictest14-21ksoftirqd/023:10:350
1375899638,23cyclictest14-21ksoftirqd/019:55:380
1375899638,23cyclictest14-21ksoftirqd/019:55:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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