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2025-12-19 - 19:44
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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 Fri Dec 19, 2025 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
172322204172,21sleep10-21swapper/107:08:101
139491204170,23phc2sys0-21swapper/307:07:343
172362203170,22sleep00-21swapper/007:08:140
171162202168,23sleep20-21swapper/207:06:392
17674996729,7cyclictest25-21ksoftirqd/112:35:191
17675996624,4cyclictest33-21ksoftirqd/209:10:252
17675996329,5cyclictest33-21ksoftirqd/208:45:172
17675996223,4cyclictest33-21ksoftirqd/209:55:172
17675996114,11cyclictest33-21ksoftirqd/212:25:232
17673996133,4cyclictest9-21ksoftirqd/011:15:210
17673996130,6cyclictest9-21ksoftirqd/011:00:180
17673996129,7cyclictest9-21ksoftirqd/012:30:000
17673996124,9cyclictest9-21ksoftirqd/007:40:300
134391610,7getstats1767699cyclictest10:48:513
17674996019,5cyclictest25-21ksoftirqd/110:20:171
17673996032,7cyclictest9-21ksoftirqd/011:10:230
17673996032,7cyclictest9-21ksoftirqd/007:50:120
17675995926,4cyclictest33-21ksoftirqd/211:05:252
17675995919,7cyclictest33-21ksoftirqd/207:10:232
17673995932,7cyclictest9-21ksoftirqd/008:55:260
17673995931,4cyclictest9-21ksoftirqd/007:25:130
17673995930,7cyclictest9-21ksoftirqd/012:05:250
17675995826,4cyclictest33-21ksoftirqd/207:25:192
17675995822,5cyclictest33-21ksoftirqd/208:24:592
17673995830,7cyclictest9-21ksoftirqd/011:45:240
17673995828,5cyclictest9-21ksoftirqd/010:00:210
17673995826,3cyclictest9-21ksoftirqd/009:45:250
17675995713,10cyclictest33-21ksoftirqd/210:19:442
17674995718,4cyclictest25-21ksoftirqd/111:41:451
17673995730,5cyclictest9-21ksoftirqd/012:30:130
17673995730,5cyclictest9-21ksoftirqd/012:30:130
17673995729,7cyclictest9-21ksoftirqd/008:30:220
17673995728,3cyclictest9-21ksoftirqd/011:20:260
17673995727,3cyclictest9-21ksoftirqd/010:35:120
17673995725,3cyclictest9-21ksoftirqd/007:30:210
139391570,1ptp4l401ktimersoftd/310:20:003
17674995652,2cyclictest231rcuc/112:04:051
17674995652,2cyclictest231rcuc/112:04:041
17674995630,4cyclictest25-21ksoftirqd/110:02:161
17674995618,8cyclictest25-21ksoftirqd/108:13:571
1767399565,10cyclictest9-21ksoftirqd/007:40:010
17673995622,3cyclictest9-21ksoftirqd/011:55:000
17673995618,6cyclictest9-21ksoftirqd/009:40:190
17673995615,4cyclictest9-21ksoftirqd/012:10:500
17675995515,7cyclictest33-21ksoftirqd/208:14:442
17675995514,9cyclictest33-21ksoftirqd/209:31:172
17675995512,9cyclictest33-21ksoftirqd/209:07:272
17673995530,8cyclictest9-21ksoftirqd/010:40:170
17673995529,3cyclictest9-21ksoftirqd/008:15:240
17673995528,6cyclictest9-21ksoftirqd/008:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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