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2026-08-16 - 00:38
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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 rackdslot4.osadl.org (updated Sat Aug 15, 2026 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
496422300,5sleep20-21swapper/207:05:232
56142203169,22sleep10-21swapper/107:08:041
55042203169,22sleep00-21swapper/007:06:380
138591202167,23phc2sys0-21swapper/307:05:053
57702161122,13sleep10-21swapper/107:10:011
115421460,6sleep2606699cyclictest11:20:142
115421460,6sleep2606699cyclictest11:20:142
6065996631,7cyclictest25-21ksoftirqd/109:25:011
138491660,1ptp4l401ktimersoftd/312:20:483
6065996429,6cyclictest25-21ksoftirqd/108:40:141
138491640,0ptp4l401ktimersoftd/310:19:193
6065996222,4cyclictest25-21ksoftirqd/107:20:191
6065996034,4cyclictest25-21ksoftirqd/111:25:171
6065996033,3cyclictest25-21ksoftirqd/111:00:231
6065996030,10cyclictest25-21ksoftirqd/110:10:211
6065995933,3cyclictest25-21ksoftirqd/107:45:231
6065995919,9cyclictest25-21ksoftirqd/109:40:181
6067995840,15cyclictest15511-21cron10:44:593
6065995831,4cyclictest25-21ksoftirqd/111:15:191
6065995829,7cyclictest25-21ksoftirqd/111:21:561
6065995829,7cyclictest25-21ksoftirqd/111:21:551
6065995829,3cyclictest25-21ksoftirqd/111:50:271
6065995829,3cyclictest25-21ksoftirqd/111:50:271
6065995827,4cyclictest25-21ksoftirqd/107:30:271
6065995824,4cyclictest25-21ksoftirqd/109:50:241
6065995824,4cyclictest25-21ksoftirqd/109:50:241
6064995828,4cyclictest9-21ksoftirqd/009:00:130
6065995727,4cyclictest25-21ksoftirqd/109:25:291
6065995629,3cyclictest25-21ksoftirqd/108:35:121
6065995625,6cyclictest25-21ksoftirqd/108:15:001
6065995625,4cyclictest25-21ksoftirqd/107:25:141
6064995624,3cyclictest9-21ksoftirqd/009:25:180
6064995616,4cyclictest9-21ksoftirqd/010:46:090
95852550,5sleep1606599cyclictest08:20:211
81692550,5sleep125-21ksoftirqd/108:19:281
6065995526,4cyclictest25-21ksoftirqd/109:15:141
6065995524,3cyclictest25-21ksoftirqd/110:25:271
606599547,3cyclictest25-21ksoftirqd/108:05:131
6065995425,3cyclictest25-21ksoftirqd/110:00:161
6065995424,4cyclictest25-21ksoftirqd/109:07:311
6064995415,4cyclictest9-21ksoftirqd/012:05:470
606599533,8cyclictest25530-21awk08:55:001
6065995322,9cyclictest25-21ksoftirqd/108:03:101
6064995327,3cyclictest9-21ksoftirqd/009:55:150
606499532,10cyclictest9-21ksoftirqd/008:10:000
138491520,0ptp4l401ktimersoftd/312:37:453
6065995125,4cyclictest25-21ksoftirqd/112:00:251
6065995119,9cyclictest25-21ksoftirqd/107:55:241
6064995130,4cyclictest9-21ksoftirqd/008:45:000
6064995130,12cyclictest9-21ksoftirqd/010:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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