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2026-08-18 - 11:08
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Tue Aug 18, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293999910245,51cyclictest14-21ksoftirqd/000:10:120
293999910011,17cyclictest0-21swapper/021:15:140
29399999614,18cyclictest0-21swapper/020:15:140
29399999613,18cyclictest0-21swapper/023:35:130
29399999516,17cyclictest0-21swapper/000:15:120
29399999515,18cyclictest0-21swapper/020:35:130
29399999514,19cyclictest0-21swapper/023:50:160
29399999412,18cyclictest0-21swapper/022:50:140
29399999316,17cyclictest0-21swapper/021:35:140
29399999315,17cyclictest0-21swapper/019:30:220
29399999315,17cyclictest0-21swapper/019:30:220
29399999313,17cyclictest0-21swapper/019:35:130
29399999312,74cyclictest0-21swapper/023:05:110
29399999311,18cyclictest0-21swapper/023:00:140
304682920,7chrt30466-21grep20:40:370
29399999215,16cyclictest0-21swapper/000:20:150
29399999213,18cyclictest0-21swapper/023:25:140
29399999116,67cyclictest0-21swapper/023:40:110
29399999114,19cyclictest0-21swapper/019:50:130
29399999112,17cyclictest0-21swapper/021:30:110
2922929119,28sleep00-21swapper/019:09:380
2939999907,21cyclictest21842-21apt-get21:50:140
29399999015,18cyclictest0-21swapper/023:20:150
29399999012,18cyclictest0-21swapper/020:00:140
29399998814,19cyclictest0-21swapper/022:00:130
29399998813,19cyclictest0-21swapper/022:25:260
29399998714,16cyclictest0-21swapper/020:20:140
29399998712,18cyclictest0-21swapper/019:45:140
29399998614,17cyclictest0-21swapper/019:10:130
29399998515,17cyclictest0-21swapper/022:35:120
29399998514,16cyclictest0-21swapper/023:15:100
29399998512,30cyclictest503-21snmpd23:30:120
2940399846,22cyclictest25686-21apt-get23:30:121
2939999847,26cyclictest31220-21apt-get22:15:120
2939999847,23cyclictest8408-21apt-get19:40:140
29399998418,23cyclictest14-21ksoftirqd/021:55:140
29399998416,22cyclictest243-21systemd-journal00:37:130
29399998413,17cyclictest0-21swapper/000:25:160
29399998413,16cyclictest0-21swapper/021:40:130
29399998411,16cyclictest0-21swapper/021:20:160
2940399836,20cyclictest20654-21apt-get20:15:161
29399998314,16cyclictest0-21swapper/020:05:110
2940399825,19cyclictest27424-21apt-get23:35:121
2939999829,19cyclictest0-21swapper/000:30:130
2939999826,24cyclictest20107-21apt-get21:45:160
29399998220,20cyclictest1-21systemd23:55:050
29399998218,22cyclictest503-21snmpd19:15:070
2939999818,25cyclictest27683-21apt-get22:05:250
2939999816,24cyclictest6170-21apt-get00:05:160
2939999814,40cyclictest7828-21apt-get21:10:090
79812800,13chrt7980-21tail21:10:281
2940399805,19cyclictest4852-21apt-get19:30:221
2940399805,19cyclictest4852-21apt-get19:30:221
2940399804,20cyclictest29484-21apt-get19:10:131
2939999807,24cyclictest2814-21apt-get19:25:150
2939999807,24cyclictest13080-21apt-get21:25:150
2939999807,24cyclictest13080-21apt-get21:25:150
2939999807,23cyclictest8194-21apt-get22:40:240
2939999807,20cyclictest29478-21apt-get22:10:110
29403997933,30cyclictest26-21ksoftirqd/119:55:131
29403997930,42cyclictest11673-21apt-get22:50:131
29403997912,58cyclictest0-21swapper/121:55:161
2939999797,22cyclictest30979-21apt-get23:45:130
2940399788,61cyclictest0-21swapper/119:25:131
2939999787,21cyclictest550-21apt-get22:20:160
2939999786,20cyclictest4341-21apt-get22:30:140
29399997829,18cyclictest32758-21idleruntime-cro20:50:000
2940399779,60cyclictest0-21swapper/121:50:121
2940399779,12cyclictest0-21swapper/122:20:151
2940399776,19cyclictest11879-21apt-get19:50:121
2940399775,18cyclictest2599-21apt-get22:25:251
29403997712,57cyclictest0-21swapper/120:10:151
29403997711,57cyclictest0-21swapper/120:45:141
2939999778,32cyclictest0-21swapper/020:30:220
2939999776,23cyclictest9934-21apt-get22:45:150
2939999776,23cyclictest24154-21apt-get20:25:160
2939999775,42cyclictest0-21swapper/000:00:430
2939999775,41cyclictest0-21swapper/020:54:110
2939999775,41cyclictest0-21swapper/020:54:110
29399997712,17cyclictest0-21swapper/022:55:130
29399997712,17cyclictest0-21swapper/022:55:130
2940399766,21cyclictest14816-21apt-get21:30:121
2940399765,18cyclictest9576-21apt-get21:15:131
29403997634,29cyclictest26-21ksoftirqd/119:15:121
29403997613,55cyclictest0-21swapper/122:15:111
29403997612,56cyclictest0-21swapper/119:35:141
29403997610,12cyclictest0-21swapper/121:05:141
2939999765,24cyclictest5740-21apt-get21:05:160
155742760,4sleep10-21swapper/123:00:231
2940399759,11cyclictest0-21swapper/119:20:121
2940399758,12cyclictest0-21swapper/120:55:151
2940399757,13cyclictest0-21swapper/100:05:161
2940399757,12cyclictest0-21swapper/123:20:141
2940399756,20cyclictest13415-21apt-get22:55:131
2940399756,20cyclictest13415-21apt-get22:55:131
2940399756,13cyclictest0-21swapper/123:55:241
2940399755,23cyclictest32719-21apt-get23:50:141
2940399755,20cyclictest15389-21apt-get20:00:151
2940399753,15cyclictest79582sleep100:10:131
29403997522,48cyclictest20395-21wc21:45:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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