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2026-06-24 - 18:33
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Wed Jun 24, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174442208173,23sleep30-21swapper/307:09:223
173342202169,22sleep00-21swapper/007:07:530
172852202170,22sleep20-21swapper/207:07:232
172542202169,22sleep10-21swapper/107:06:581
777321510,5sleep31779199cyclictest11:05:253
1385918262,11phc2sys0-21swapper/307:10:013
120952790,5sleep212099-21irqrtprio11:15:192
138491740,1ptp4l391rcuc/310:00:003
1779099730,22cyclictest16778-21phc2sys-jitter08:10:222
138491680,1ptp4l31383-21irqstats07:35:203
1779099650,22cyclictest3584-21cut12:05:002
1779099650,22cyclictest29815-21grep08:35:282
1779099650,22cyclictest29815-21grep08:35:282
1779099640,26cyclictest12279-21cat08:00:262
1779099620,20cyclictest21324-21sed10:30:142
1779099610,24cyclictest14872-21vmstat08:05:292
85272600,2sleep30-21swapper/307:55:133
1779099600,19cyclictest16354-21hddtemp_smartct10:20:152
1779099580,24cyclictest24855-21mailstats10:35:252
1779099570,25cyclictest27130-21sshd07:25:432
1779099570,22cyclictest20293-21cat11:30:262
1779099570,18cyclictest7457-21phc2sys12:10:212
138491570,1ptp4l401ktimersoftd/310:15:133
192232560,2sleep20-21swapper/208:15:222
1779099561,19cyclictest0-21swapper/208:40:132
199582550,1sleep10-21swapper/109:20:241
1779099550,22cyclictest1319-21snmpd10:42:022
138491550,1ptp4l401ktimersoftd/309:19:083
134991550,6getstats1779199cyclictest09:27:473
1779099530,20cyclictest4649-21processes08:50:222
138491520,0ptp4l401ktimersoftd/310:40:503
11402520,4sleep2321ktimersoftd/212:00:002
138491480,0ptp4l401ktimersoftd/309:34:573
1778899452,2cyclictest9-21ksoftirqd/012:00:000
138491450,0ptp4l401ktimersoftd/310:32:493
138491450,0ptp4l401ktimersoftd/309:05:293
17790994411,18cyclictest7688-21rt-features11:05:242
1778899446,3cyclictest9-21ksoftirqd/008:35:000
138491440,0ptp4l401ktimersoftd/311:55:253
17790994314,27cyclictest0-21swapper/212:35:232
17790994313,21cyclictest14870-21phc2sys-jitter12:25:212
1778899430,3cyclictest9-21ksoftirqd/011:05:000
17789994225,4cyclictest25-21ksoftirqd/111:15:251
1779099410,18cyclictest0-21swapper/210:45:212
1778999414,11cyclictest25-21ksoftirqd/107:45:011
1779099400,22cyclictest12013-21grep10:10:202
17789994035,3cyclictest25-21ksoftirqd/112:29:591
17789994035,3cyclictest25-21ksoftirqd/110:50:011
17789994035,3cyclictest25-21ksoftirqd/109:45:001
17789994035,3cyclictest25-21ksoftirqd/107:24:591
17789994025,4cyclictest25-21ksoftirqd/108:25:211
138491400,1ptp4l401ktimersoftd/308:04:373
1779099390,26cyclictest13644-21/usr/sbin/munin11:20:192
1779099390,15cyclictest1319-21snmpd09:33:372
17789993933,3cyclictest25-21ksoftirqd/110:30:001
17789993925,4cyclictest25-21ksoftirqd/108:20:271
17789993925,3cyclictest25-21ksoftirqd/111:05:191
17789993923,3cyclictest25-21ksoftirqd/111:10:241
17789993923,3cyclictest25-21ksoftirqd/108:40:271
17789993922,4cyclictest25-21ksoftirqd/109:10:131
17789993922,4cyclictest25-21ksoftirqd/108:45:141
17788993935,3cyclictest9-21ksoftirqd/007:20:000
17788993932,4cyclictest9-21ksoftirqd/011:55:010
17788993925,3cyclictest9-21ksoftirqd/012:15:150
1778899391,3cyclictest9-21ksoftirqd/010:55:220
1778899390,6cyclictest121rcu_preempt11:20:010
1779099380,26cyclictest0-21swapper/211:40:192
17789993834,2cyclictest25-21ksoftirqd/112:40:001
17789993833,3cyclictest25-21ksoftirqd/110:55:161
17789993833,3cyclictest25-21ksoftirqd/109:00:011
17789993828,4cyclictest25-21ksoftirqd/110:35:241
17789993824,3cyclictest25-21ksoftirqd/111:55:261
17789993823,3cyclictest25-21ksoftirqd/111:40:171
17789993823,3cyclictest25-21ksoftirqd/111:35:251
1778899384,2cyclictest121rcu_preempt12:10:250
17788993834,2cyclictest9-21ksoftirqd/010:20:000
1778899383,3cyclictest9-21ksoftirqd/009:40:200
1778899383,3cyclictest121rcu_preempt12:35:120
17788993833,3cyclictest9-21ksoftirqd/009:54:590
1778899382,7cyclictest9-21ksoftirqd/010:05:240
17788993824,3cyclictest9-21ksoftirqd/008:10:220
1778899382,3cyclictest9-21ksoftirqd/012:00:160
1778899382,3cyclictest121rcu_preempt09:15:010
1778899381,3cyclictest9-21ksoftirqd/008:50:120
1778899381,2cyclictest9-21ksoftirqd/007:40:250
1778899380,2cyclictest121rcu_preempt10:33:030
17791993732,3cyclictest17987-21cron10:25:013
17791993730,4cyclictest41-21ksoftirqd/307:50:583
1779099370,25cyclictest0-21swapper/207:15:122
17789993732,3cyclictest25-21ksoftirqd/111:25:211
17789993732,3cyclictest25-21ksoftirqd/111:05:001
17789993732,3cyclictest25-21ksoftirqd/109:45:131
17789993732,3cyclictest25-21ksoftirqd/109:15:181
17789993732,3cyclictest25-21ksoftirqd/109:05:251
17789993732,3cyclictest25-21ksoftirqd/108:35:211
17789993732,3cyclictest25-21ksoftirqd/108:35:211
17789993724,3cyclictest25-21ksoftirqd/108:30:131
17789993723,4cyclictest25-21ksoftirqd/110:50:271
17789993723,4cyclictest25-21ksoftirqd/107:10:181
17789993723,3cyclictest25-21ksoftirqd/112:15:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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