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2026-03-22 - 17:47
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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 rackfslot7.osadl.org (updated Sun Mar 22, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95276399855,59cyclictest1-21systemd09:50:002
95276499844,79cyclictest0-21swapper/311:50:163
952763997719,39cyclictest1005573-21munin-run08:45:012
952763997235,18cyclictest1064573-21load10:30:172
952763996810,39cyclictest1012390-21ntpq08:55:192
95276399657,39cyclictest1010932-21/usr/sbin/munin08:55:012
952763996525,20cyclictest960835-21latency_hist07:25:012
95276399636,38cyclictest1103249-21ldconfig11:40:192
952763996224,19cyclictest1069617-21perl10:40:152
95276399613,39cyclictest965931-21/usr/sbin/munin07:30:232
952763995836,19cyclictest952760-21cyclictest09:30:192
952763995836,19cyclictest952760-21cyclictest09:30:182
952763995816,40cyclictest1063241-21cat10:30:012
95276399580,39cyclictest1034384-21ps09:35:212
952763995718,39cyclictest1075650-21ntpq10:50:192
952763995637,0cyclictest973983-21cat07:45:252
952763995618,38cyclictest1074133-21munin-run10:50:012
952763995618,37cyclictest0-21swapper/211:46:472
952763995517,19cyclictest1116579-21irqstats12:05:172
952763995516,38cyclictest871-21mta-sts-daemon10:14:512
952765995453,1cyclictest591rcuc/409:35:164
952763995416,19cyclictest1095734-21users11:25:252
952763995415,39cyclictest0-21swapper/208:36:092
952763995415,39cyclictest0-21swapper/208:34:412
95276399540,54cyclictest0-21swapper/209:14:192
952763995331,0cyclictest0-21swapper/209:50:172
952763995319,15cyclictest0-21swapper/210:56:252
952763995319,15cyclictest0-21swapper/209:25:072
952763995319,15cyclictest0-21swapper/207:10:552
952763995314,39cyclictest872-21mta-sts-daemon12:35:242
952763995314,39cyclictest1122618-21python312:15:232
952763995314,39cyclictest0-21swapper/212:31:092
952763995314,39cyclictest0-21swapper/212:10:292
952763995314,39cyclictest0-21swapper/212:02:452
952763995314,39cyclictest0-21swapper/211:52:392
952763995314,39cyclictest0-21swapper/211:38:112
952763995314,39cyclictest0-21swapper/211:31:372
952763995314,39cyclictest0-21swapper/211:12:022
952763995314,39cyclictest0-21swapper/211:00:332
952763995314,39cyclictest0-21swapper/210:39:022
952763995314,39cyclictest0-21swapper/209:22:282
952763995314,39cyclictest0-21swapper/209:06:512
952763995314,39cyclictest0-21swapper/208:25:412
952763995314,39cyclictest0-21swapper/208:21:062
952763995314,39cyclictest0-21swapper/208:17:192
952763995314,39cyclictest0-21swapper/208:08:532
952763995314,39cyclictest0-21swapper/207:56:212
952763995314,39cyclictest0-21swapper/207:54:442
952763995314,39cyclictest0-21swapper/207:35:092
952763995314,39cyclictest0-21swapper/207:16:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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