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2026-04-24 - 09:58
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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 Fri Apr 24, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
102752204170,22sleep00-21swapper/019:09:330
100432204170,23sleep30-21swapper/319:06:383
102192202169,22sleep10-21swapper/119:08:491
101052200167,21sleep20-21swapper/219:07:212
1031128060,11sleep00-21swapper/019:10:000
138491710,1ptp4l401ktimersoftd/322:34:433
138491560,1ptp4l401ktimersoftd/300:07:543
138491550,1ptp4l401ktimersoftd/320:30:053
1060499543,7cyclictest25123-21latency_hist22:54:592
307772530,1sleep30-21swapper/320:55:133
1060499523,7cyclictest28576-21sed23:00:182
1060499513,7cyclictest14622-21unixbench_multi22:30:262
1060499513,6cyclictest17086-21timerwakeupswit22:35:282
1060499513,6cyclictest10437-21latency_hist21:20:002
1060499511,7cyclictest17602-21cat23:45:012
138491500,8ptp4l401ktimersoftd/322:53:223
1060499502,5cyclictest321ktimersoftd/219:15:212
1060499502,16cyclictest3363-21cpuspeed_turbos20:00:132
1060499500,9cyclictest334-21cstates23:10:142
1060499500,9cyclictest31994-21basename20:55:242
1060499493,5cyclictest18448-21if_enp1s023:45:152
1060499483,6cyclictest5171-21latency_hist00:25:002
1060499481,9cyclictest11230-21irqrtprio21:20:182
1060599476,3cyclictest41-21ksoftirqd/321:19:593
1060499475,5cyclictest27512-21sed23:00:002
1060499473,5cyclictest321ktimersoftd/222:20:132
1060499472,6cyclictest8775-21irqrtprio00:30:182
1060499470,10cyclictest20579-21expr22:45:142
1060499462,5cyclictest0-21swapper/220:20:142
1060499460,9cyclictest18153-21expr22:40:142
1060499460,5cyclictest0-21swapper/223:35:242
138491450,0ptp4l401ktimersoftd/323:46:283
1060499453,6cyclictest11477-21irqrtprio20:15:182
1060499453,5cyclictest321ktimersoftd/221:45:132
1060499452,5cyclictest321ktimersoftd/220:50:002
1060499451,6cyclictest321ktimersoftd/222:05:212
1060499450,7cyclictest10834-21cstates19:10:122
1060499450,5cyclictest0-21swapper/223:05:132
1060399450,43cyclictest0-21swapper/100:33:341
1060299452,2cyclictest121rcu_preempt20:55:510
279792440,2sleep00-21swapper/000:05:130
138491440,0ptp4l401ktimersoftd/320:40:193
10604994438,4cyclictest32655-21cron22:05:002
1060499442,7cyclictest15617-21cstates21:30:152
1060499441,5cyclictest321ktimersoftd/200:10:222
10605994336,4cyclictest5227-21sh22:15:013
1060499433,11cyclictest24494-21unixbench_multi23:55:272
1060499431,5cyclictest321ktimersoftd/220:30:142
138491420,1ptp4l401ktimersoftd/323:39:193
138491420,0ptp4l401ktimersoftd/319:51:003
1060599425,14cyclictest41-21ksoftirqd/322:00:003
1060599425,14cyclictest41-21ksoftirqd/322:00:003
1060499422,6cyclictest0-21swapper/221:35:262
1060499422,5cyclictest321ktimersoftd/200:10:012
1060499421,7cyclictest7518-21latency_hist23:25:002
1060499421,5cyclictest321ktimersoftd/222:15:282
1060499413,5cyclictest3820-21meminfo23:15:192
1060499411,6cyclictest321ktimersoftd/222:10:202
1060499411,6cyclictest10834-21diskstats23:30:152
1060499410,6cyclictest8969-21meminfo23:25:212
10605994035,3cyclictest41-21ksoftirqd/323:25:003
10605994034,3cyclictest41-21ksoftirqd/321:45:003
10605994028,10cyclictest41-21ksoftirqd/319:40:273
1060499404,5cyclictest443-21wc00:15:112
1060499403,5cyclictest25545-21ls00:00:132
1060499401,6cyclictest5957-21hddtemp_smartct00:25:162
1060399402,24cyclictest14827-21kworker/1:021:52:431
10603994010,28cyclictest0-21swapper/119:27:431
10602994036,2cyclictest5583-21cstates00:25:130
138491390,1ptp4l401ktimersoftd/319:14:593
138491390,0ptp4l401ktimersoftd/323:02:003
10605993935,2cyclictest41-21ksoftirqd/321:40:013
10605993933,3cyclictest12581-21sh23:35:003
1060499392,6cyclictest23603-21diskstats20:40:142
1060499391,5cyclictest29153-21meminfo20:50:202
1060499391,4cyclictest321ktimersoftd/219:20:232
1060499390,6cyclictest0-21swapper/221:40:142
10603993917,21cyclictest0-21swapper/119:32:331
138491380,0ptp4l401ktimersoftd/319:26:053
10605993833,3cyclictest41-21ksoftirqd/323:10:253
10605993833,3cyclictest41-21ksoftirqd/322:45:013
10605993833,3cyclictest41-21ksoftirqd/320:00:003
10605993832,3cyclictest41-21ksoftirqd/321:35:013
10605993832,3cyclictest41-21ksoftirqd/320:20:013
10604993831,4cyclictest33-21ksoftirqd/221:02:182
10604993831,4cyclictest33-21ksoftirqd/200:36:002
10603993831,4cyclictest25-21ksoftirqd/121:42:091
10603993816,20cyclictest0-21swapper/119:35:331
10603993815,21cyclictest0-21swapper/122:05:531
10605993732,3cyclictest41-21ksoftirqd/323:50:193
10605993732,3cyclictest41-21ksoftirqd/321:10:013
10605993732,3cyclictest41-21ksoftirqd/321:00:123
10605993732,3cyclictest41-21ksoftirqd/300:40:013
10605993732,3cyclictest41-21ksoftirqd/300:30:013
10605993732,2cyclictest41-21ksoftirqd/323:30:003
10605993732,2cyclictest41-21ksoftirqd/300:15:163
10605993731,4cyclictest41-21ksoftirqd/322:05:123
10605993731,3cyclictest41-21ksoftirqd/323:05:173
10605993731,3cyclictest41-21ksoftirqd/322:50:003
10605993731,3cyclictest41-21ksoftirqd/320:55:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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