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2025-08-28 - 22:23
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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 rack8slot4.osadl.org (updated Thu Aug 28, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7164862226193,21sleep40-21swapper/407:08:474
7165002225174,16sleep00-21swapper/007:08:590
7142922225191,22sleep30-21swapper/307:05:093
7143592222188,22sleep20-21swapper/207:06:042
7164832221171,39sleep10-21swapper/107:08:441
7164422215187,17sleep70-21swapper/707:08:107
7162562211181,19sleep60-21swapper/607:06:246
7164872210177,21sleep50-21swapper/507:08:485
716761993227,4cyclictest0-21swapper/012:05:010
71676199320,31cyclictest0-21swapper/010:11:090
716786993128,2cyclictest87-21ksoftirqd/711:36:107
71678699310,30cyclictest807360-21awk09:55:007
71678699310,30cyclictest1202534-21systemd-journal11:35:017
71677299310,29cyclictest0-21swapper/409:05:004
71677299310,29cyclictest0-21swapper/408:26:104
716768993129,1cyclictest769080-21sh08:45:002
71676899310,30cyclictest771774-21idleruntime-cro08:50:002
716761993128,2cyclictest0-21swapper/012:31:100
716761993128,2cyclictest0-21swapper/011:00:000
716761993127,3cyclictest0-21swapper/010:16:120
71676199310,1cyclictest0-21swapper/012:11:130
716786993027,2cyclictest1202534-21systemd-journal08:50:007
71678699300,30cyclictest87-21ksoftirqd/708:43:257
71678699300,30cyclictest749950-21apt08:10:017
71678699300,29cyclictest0-21swapper/710:05:007
71678299300,29cyclictest0-21swapper/609:13:036
71677299300,29cyclictest815679-21turbostat.cron10:10:004
71677199300,29cyclictest895079-21apt-get12:36:133
71677199300,29cyclictest810274-21sh10:00:003
71677199300,29cyclictest0-21swapper/308:08:313
716768993027,2cyclictest839914-21sh10:55:002
71676899300,29cyclictest731070-21latency_hist07:35:012
71676199300,29cyclictest0-21swapper/012:10:010
71676199300,29cyclictest0-21swapper/008:21:580
716786992929,0cyclictest0-21swapper/712:31:107
716786992927,1cyclictest0-21swapper/710:20:477
71678699290,29cyclictest0-21swapper/709:37:467
71678699290,28cyclictest0-21swapper/710:11:067
71678699290,28cyclictest0-21swapper/707:55:017
71678699290,1cyclictest0-21swapper/709:26:117
71678699290,1cyclictest0-21swapper/708:20:217
716782992928,0cyclictest0-21swapper/612:16:106
716782992927,1cyclictest843386-21apt-get11:01:106
71678299290,28cyclictest0-21swapper/608:45:056
716776992927,1cyclictest747760-21apt-get08:06:115
71677699290,28cyclictest0-21swapper/512:22:175
71677699290,28cyclictest0-21swapper/511:46:485
71677699290,28cyclictest0-21swapper/511:25:185
71677699290,28cyclictest0-21swapper/510:51:095
716772992927,1cyclictest0-21swapper/412:15:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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