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2026-01-08 - 18:27
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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 50 highest latencies:
System rack4slot6.osadl.org (updated Thu Jan 08, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
734921520,1sleep50-21swapper/510:45:195
17764521360,129pltrace0-21swapper/707:10:017
14975521260,122pltrace0-21swapper/607:08:536
14975521000,92pltrace0-21swapper/507:08:405
1497552990,78pltrace0-21swapper/207:08:562
1497552960,92pltrace0-21swapper/107:07:581
1763727041,10sleep30-21swapper/307:08:213
1756927042,10sleep00-21swapper/007:07:220
1751725945,10sleep40-21swapper/407:06:374
1791199230,22cyclictest0-21swapper/007:30:490
1791699210,15cyclictest0-21swapper/111:54:071
1233352200,13pltrace0-21swapper/612:00:206
2715852190,3pltrace0-21swapper/709:25:157
2715852190,3pltrace0-21swapper/709:25:157
1965052190,1pltrace21862-21timerwakeupswit11:15:197
772352180,2pltrace7727-21pltrace-run10:49:541
482052180,13pltrace54-21ksoftirqd/408:48:494
3261452180,2pltrace0-21swapper/707:35:177
2424852180,2pltrace0-21swapper/707:20:007
1793999180,17cyclictest0-21swapper/610:02:116
1793999180,14cyclictest0-21swapper/608:50:166
1791699181,16cyclictest0-21swapper/112:32:291
1791699181,16cyclictest0-21swapper/111:01:111
1791699181,13cyclictest0-21swapper/108:54:541
1781852180,6pltrace78-21ksoftirqd/710:12:527
1233352180,14pltrace54-21ksoftirqd/412:00:004
760552170,3pltrace54-21ksoftirqd/408:52:454
3164552170,12pltrace54-21ksoftirqd/408:37:534
300052170,11pltrace5684-21chrt07:43:430
1878152170,11pltrace54-21ksoftirqd/409:11:524
17943991711,5cyclictest0-21swapper/707:20:237
1794399170,16cyclictest0-21swapper/710:36:037
1794399170,11cyclictest11745-21aten_r4power_vo11:00:087
1793999171,15cyclictest0-21swapper/610:13:036
1793999171,15cyclictest0-21swapper/610:06:426
1793499171,15cyclictest0-21swapper/507:15:125
1793499170,5cyclictest4259-21tune2fs09:40:135
1233352170,4pltrace14155-21ntp_offset12:00:172
1222152170,10pltrace0-21swapper/210:00:012
397852160,0pltrace0-21swapper/711:47:587
3187952160,4pltrace2021-21chrt12:36:452
2994552160,12pltrace54-21ksoftirqd/409:33:564
17943991612,3cyclictest0-21swapper/708:03:127
17943991610,5cyclictest0-21swapper/707:25:197
1794399160,8cyclictest1589-21perl09:35:137
1794399160,4cyclictest0-21swapper/708:10:087
1794399160,3cyclictest0-21swapper/707:49:567
1794399160,15cyclictest0-21swapper/708:51:477
1794399160,15cyclictest0-21swapper/707:50:557
1794399160,14cyclictest25079-21taskset11:23:037
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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