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2026-03-16 - 17:21
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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 rack5slot2.osadl.org (updated Mon Mar 16, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275162192175,12sleep00-21swapper/007:06:140
277242191176,10sleep10-21swapper/107:08:561
276542188170,13sleep30-21swapper/307:08:023
274732173156,12sleep20-21swapper/207:05:392
239722510,0sleep20-21swapper/211:45:272
292262460,0sleep00-21swapper/011:16:440
56472100,0sleep20-21swapper/209:16:162
20976290,0sleep20-21swapper/212:31:442
1244290,0sleep20-21swapper/212:38:092
279989985,0cyclictest40-21ksoftirqd/308:00:003
279919982,3cyclictest8597-21awk07:34:590
279929961,3cyclictest0-21swapper/108:30:101
279929961,3cyclictest0-21swapper/107:50:101
18046260,0sleep10-21swapper/108:55:201
279989955,0cyclictest30571-21kworker/3:110:10:363
279989955,0cyclictest30571-21kworker/3:108:41:033
279989955,0cyclictest30571-21kworker/3:107:22:413
279989955,0cyclictest0-21swapper/307:50:193
279989951,4cyclictest8262-21ssh12:10:113
279989950,4cyclictest3832-21apt-get08:30:093
279989950,4cyclictest10212-21ssh09:50:023
279989950,4cyclictest10212-21ssh09:50:013
279949950,5cyclictest0-21swapper/212:02:302
279949950,5cyclictest0-21swapper/211:14:462
279949950,5cyclictest0-21swapper/210:22:462
279949950,5cyclictest0-21swapper/210:15:122
279949950,4cyclictest28819-21apt-get08:15:112
279949950,0cyclictest0-21swapper/209:30:432
279929951,3cyclictest0-21swapper/110:05:121
279929951,2cyclictest0-21swapper/109:05:121
279929951,2cyclictest0-21swapper/108:25:121
279929951,2cyclictest0-21swapper/108:00:121
279919950,5cyclictest0-21swapper/012:01:450
279919950,5cyclictest0-21swapper/010:50:280
279919950,5cyclictest0-21swapper/010:11:530
279919950,5cyclictest0-21swapper/008:45:010
279919950,0cyclictest25218-21ssh12:34:200
2787250,0sleep00-21swapper/012:23:060
318240,0sleep10-21swapper/110:15:401
279989944,0cyclictest40-21ksoftirqd/307:40:153
279989943,1cyclictest30147-21/usr/sbin/munin10:15:173
279989943,1cyclictest22232-21cut08:00:133
279989942,1cyclictest814-21snmpd10:52:503
279989942,1cyclictest17418-21ssh11:10:483
279989941,3cyclictest0-21swapper/311:05:523
279989941,1cyclictest0-21swapper/312:00:113
279989941,1cyclictest0-21swapper/311:55:113
279989941,1cyclictest0-21swapper/307:25:123
279989941,1cyclictest0-21swapper/307:15:113
279989940,4cyclictest6343-21apt-get07:30:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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