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2026-04-27 - 21:38
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack8slot2.osadl.org (updated Mon Apr 27, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1855243991728,160cyclictest0-21swapper/011:50:190
18552439916915,150cyclictest1963744-21ssh11:00:530
1855243991691,165cyclictest0-21swapper/012:15:210
1855243991659,153cyclictest1936315-21kworker/u16:17+rpciod10:20:010
1855243991652,51cyclictest1871150-21kworker/u16:56+rpciod09:00:060
1855243991651,110cyclictest1905807-21apt-get09:30:120
1855243991651,110cyclictest1905807-21apt-get09:30:120
1855243991631,91cyclictest1951144-21ntpq10:40:570
1855243991631,91cyclictest1951144-21ntpq10:40:570
1855243991631,119cyclictest1967123-21ntpq11:06:140
18552439916122,134cyclictest2016599-21ssh12:25:160
18552439916122,134cyclictest2016599-21ssh12:25:160
185524599148139,3cyclictest0-21swapper/209:00:062
1855243991391,92cyclictest1943899-21ssh10:30:220
185524399138112,22cyclictest85-21hwrng10:13:200
1855243991371,119cyclictest1970295-21ssh11:11:130
1855243991371,119cyclictest1970295-21ssh11:11:130
18552439913620,20cyclictest1954306-21ntpq10:45:560
1855243991322,100cyclictest2013856-21grep12:20:410
185524399130109,16cyclictest85-21hwrng09:20:050
18552439912912,73cyclictest1897214-21ssh09:15:510
1855243991290,118cyclictest1925862-21ntpq10:01:010
1855243991290,118cyclictest1925862-21ntpq10:01:010
18552439912762,59cyclictest171ktimers/011:35:230
1855243991271,104cyclictest2003937-21apt-get12:05:130
1855243991271,104cyclictest2003937-21apt-get12:05:130
185524499126119,3cyclictest0-21swapper/110:05:561
185524599125119,3cyclictest0-21swapper/211:06:142
185524599125117,5cyclictest0-21swapper/209:30:122
185524599125117,5cyclictest0-21swapper/209:30:122
1855243991241,78cyclictest2002902-21sshd12:02:410
18552439912318,14cyclictest0-21swapper/009:51:180
185524499121113,1cyclictest0-21swapper/109:00:061
18552439912116,86cyclictest0-21swapper/007:36:030
18552439912116,86cyclictest0-21swapper/007:36:030
185524599120115,1cyclictest0-21swapper/212:15:212
1855243991192,69cyclictest1894498-21sed09:11:200
185524699118110,5cyclictest85-21hwrng11:28:053
185524699117110,5cyclictest85-21hwrng10:47:083
185524699117107,6cyclictest85-21hwrng11:17:513
185524699117107,6cyclictest85-21hwrng11:17:513
1855243991175,95cyclictest0-21swapper/008:45:220
18552439911718,92cyclictest0-21swapper/011:20:180
18552439911718,92cyclictest0-21swapper/011:20:180
185524499116109,3cyclictest0-21swapper/111:00:531
18552439911528,84cyclictest0-21swapper/010:20:320
185524699114100,11cyclictest85-21hwrng08:23:463
18552439911388,21cyclictest85-21hwrng12:37:430
18552439911361,46cyclictest171ktimers/009:05:190
18552439911361,46cyclictest171ktimers/009:05:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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