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2025-12-18 - 21:27
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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 Thu Dec 18, 2025 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254582202170,21sleep20-21swapper/207:07:302
139491202168,23phc2sys0-21swapper/307:09:053
253432201168,22sleep10-21swapper/107:06:011
256002200167,22sleep00-21swapper/007:09:210
25942996430,9cyclictest33-21ksoftirqd/208:00:002
25942996331,6cyclictest33-21ksoftirqd/209:40:002
25942996323,7cyclictest33-21ksoftirqd/207:15:232
25942996323,7cyclictest33-21ksoftirqd/207:15:232
139391630,1ptp4l401ktimersoftd/312:01:273
25942996227,8cyclictest33-21ksoftirqd/209:35:002
25942996128,6cyclictest33-21ksoftirqd/211:50:222
25942996030,6cyclictest33-21ksoftirqd/210:50:242
25942996027,5cyclictest33-21ksoftirqd/210:35:232
25942996025,7cyclictest33-21ksoftirqd/208:35:232
25942996023,4cyclictest33-21ksoftirqd/209:30:002
25942996022,7cyclictest33-21ksoftirqd/211:55:182
25942995930,11cyclictest33-21ksoftirqd/210:00:012
25942995921,7cyclictest33-21ksoftirqd/209:10:292
25942995824,5cyclictest33-21ksoftirqd/209:45:002
25942995824,5cyclictest33-21ksoftirqd/209:45:002
25942995820,6cyclictest33-21ksoftirqd/208:00:102
2594199581,55cyclictest0-21swapper/110:35:331
250202580,7sleep1241ktimersoftd/111:35:221
25942995728,9cyclictest33-21ksoftirqd/212:25:262
25942995727,10cyclictest33-21ksoftirqd/207:40:192
25942995725,7cyclictest33-21ksoftirqd/210:20:102
25942995722,5cyclictest33-21ksoftirqd/208:20:152
25942995721,5cyclictest33-21ksoftirqd/211:00:192
223362570,2sleep10-21swapper/111:30:211
139391570,8ptp4l401ktimersoftd/312:33:513
25942995633,7cyclictest33-21ksoftirqd/212:20:182
25942995627,9cyclictest33-21ksoftirqd/210:45:242
25942995624,5cyclictest33-21ksoftirqd/208:15:142
25942995624,5cyclictest33-21ksoftirqd/207:35:192
25942995622,3cyclictest33-21ksoftirqd/208:40:172
25942995620,4cyclictest33-21ksoftirqd/210:15:002
25942995526,9cyclictest33-21ksoftirqd/209:00:002
25942995525,6cyclictest33-21ksoftirqd/211:49:592
25942995524,5cyclictest33-21ksoftirqd/211:10:202
25942995521,5cyclictest33-21ksoftirqd/210:20:002
25942995521,4cyclictest33-21ksoftirqd/207:30:002
139391550,1ptp4l401ktimersoftd/310:53:113
25942995426,7cyclictest33-21ksoftirqd/208:48:132
25942995425,6cyclictest33-21ksoftirqd/212:00:182
25942995423,3cyclictest33-21ksoftirqd/209:05:102
25942995417,5cyclictest33-21ksoftirqd/211:05:122
56992530,2sleep20-21swapper/210:55:202
25942995322,3cyclictest33-21ksoftirqd/208:50:162
25942995320,9cyclictest33-21ksoftirqd/212:17:462
25942995320,6cyclictest33-21ksoftirqd/211:35:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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