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2025-12-13 - 19:23
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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
Characteristics of the 50 highest latencies:
System rackdslot3.osadl.org (updated Sat Dec 13, 2025 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220502225192,22sleep20-21swapper/207:09:302
220932218186,22sleep10-21swapper/107:09:561
218502213179,22sleep30-21swapper/307:06:533
218522208175,22sleep00-21swapper/007:06:550
2020521420,2sleep30-21swapper/308:10:273
139391780,1ptp4l401ktimersoftd/310:25:333
25332640,6sleep22239299cyclictest08:40:472
139391550,1ptp4l401ktimersoftd/310:34:103
139391530,1ptp4l401ktimersoftd/308:24:333
139391530,1ptp4l401ktimersoftd/308:24:333
139391420,0ptp4l401ktimersoftd/312:33:363
139391420,0ptp4l401ktimersoftd/308:15:333
22392994035,3cyclictest33-21ksoftirqd/212:40:002
139391400,1ptp4l401ktimersoftd/309:27:443
139391390,0ptp4l401ktimersoftd/307:53:423
22393993826,10cyclictest41-21ksoftirqd/309:20:223
22392993826,10cyclictest33-21ksoftirqd/210:55:282
22391993832,4cyclictest25-21ksoftirqd/110:23:591
57898370,2rtkit-daemon577-21rtkit-daemon08:04:212
22392993732,3cyclictest33-21ksoftirqd/212:00:012
22392993732,3cyclictest33-21ksoftirqd/211:55:012
22391993733,3cyclictest25-21ksoftirqd/108:55:001
22391993729,5cyclictest25-21ksoftirqd/107:41:591
139391370,1ptp4l0-21swapper/310:53:533
22393993631,3cyclictest41-21ksoftirqd/311:09:593
22393993630,4cyclictest41-21ksoftirqd/311:35:173
22393993630,3cyclictest41-21ksoftirqd/309:55:253
22392993629,4cyclictest33-21ksoftirqd/209:48:422
22391993631,3cyclictest25-21ksoftirqd/112:00:011
22391993630,4cyclictest25-21ksoftirqd/110:00:241
22391993630,4cyclictest25-21ksoftirqd/108:14:341
22391993630,4cyclictest25-21ksoftirqd/107:45:151
22391993630,3cyclictest30629-21cron10:50:011
22391993630,3cyclictest25-21ksoftirqd/110:19:591
22391993629,4cyclictest25-21ksoftirqd/111:40:001
139391360,0ptp4l401ktimersoftd/307:45:173
22393993531,3cyclictest41-21ksoftirqd/312:30:003
22393993531,2cyclictest41-21ksoftirqd/312:40:003
22393993529,4cyclictest41-21ksoftirqd/307:19:413
22393993527,5cyclictest41-21ksoftirqd/308:45:173
22392993530,3cyclictest33-21ksoftirqd/211:43:502
22392993530,3cyclictest33-21ksoftirqd/208:50:232
22392993530,3cyclictest33-21ksoftirqd/207:45:222
22392993529,4cyclictest33-21ksoftirqd/210:14:382
22392993523,10cyclictest33-21ksoftirqd/208:05:302
22391993530,3cyclictest25-21ksoftirqd/112:25:001
22391993529,4cyclictest25-21ksoftirqd/110:11:431
22391993529,4cyclictest25-21ksoftirqd/109:01:561
22391993529,4cyclictest25-21ksoftirqd/108:42:021
22391993529,4cyclictest25-21ksoftirqd/108:29:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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