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2026-08-14 - 14:49
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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 Aug 14, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591228167,49phc2sys0-21swapper/319:06:583
14452204169,23sleep00-21swapper/019:06:460
14762203170,21sleep20-21swapper/219:07:042
13862202168,22sleep10-21swapper/119:06:041
2991321620,6sleep1216199cyclictest20:05:121
2195021610,2sleep00-21swapper/022:00:130
1482921610,2sleep1216199cyclictest21:45:171
2668721490,8sleep2216299cyclictest23:15:012
2163996838,3cyclictest41-21ksoftirqd/319:25:163
2163996731,8cyclictest41-21ksoftirqd/323:50:013
2163996632,9cyclictest41-21ksoftirqd/322:20:193
216299667,21cyclictest412-21/usr/sbin/munin00:30:212
216299661,21cyclictest30196-21cut00:25:202
2163996532,4cyclictest41-21ksoftirqd/320:40:003
2163996532,4cyclictest41-21ksoftirqd/320:40:003
2163996530,8cyclictest41-21ksoftirqd/319:55:013
216299651,29cyclictest3658-21sshd22:27:252
2163996430,8cyclictest41-21ksoftirqd/320:10:203
2163996428,9cyclictest41-21ksoftirqd/323:35:003
2163996428,8cyclictest41-21ksoftirqd/319:20:133
216299640,21cyclictest26806-21date21:05:002
2163996334,7cyclictest41-21ksoftirqd/322:25:243
2163996328,8cyclictest41-21ksoftirqd/323:40:133
2163996328,8cyclictest41-21ksoftirqd/323:20:003
2163996328,4cyclictest41-21ksoftirqd/322:35:143
2163996327,9cyclictest41-21ksoftirqd/322:00:273
2163996324,8cyclictest41-21ksoftirqd/323:50:203
216299631,21cyclictest14155-21/usr/sbin/munin22:50:242
216299630,23cyclictest16931-21cat19:39:592
2163996233,8cyclictest41-21ksoftirqd/300:05:263
2163996233,7cyclictest41-21ksoftirqd/300:35:203
2163996232,4cyclictest41-21ksoftirqd/321:55:293
2163996230,5cyclictest41-21ksoftirqd/320:40:203
2163996230,4cyclictest41-21ksoftirqd/323:15:003
2163996229,4cyclictest41-21ksoftirqd/321:00:013
2163996228,6cyclictest41-21ksoftirqd/320:05:123
216299624,17cyclictest20721-21/usr/sbin/munin20:50:212
216299621,19cyclictest1-21systemd20:57:172
2162996210,22cyclictest6633-21latency_hist21:30:002
216299620,28cyclictest18709-21cat19:40:252
216299620,20cyclictest23978-21date00:15:002
2163996131,7cyclictest41-21ksoftirqd/321:25:273
2163996131,10cyclictest41-21ksoftirqd/321:15:153
2163996130,7cyclictest41-21ksoftirqd/321:20:163
2163996129,8cyclictest41-21ksoftirqd/320:20:003
2163996129,7cyclictest41-21ksoftirqd/321:05:003
2163996129,5cyclictest41-21ksoftirqd/319:10:273
2163996129,4cyclictest41-21ksoftirqd/322:10:133
2163996126,7cyclictest41-21ksoftirqd/322:05:133
2163996125,8cyclictest41-21ksoftirqd/321:15:003
2163996123,10cyclictest41-21ksoftirqd/321:45:213
216299610,21cyclictest7934-21cat21:30:222
216299610,21cyclictest7934-21cat21:30:212
216299610,21cyclictest24179-21grep00:15:132
216299610,21cyclictest13897-21date23:55:012
216299610,20cyclictest19625-21cat00:05:202
216299610,20cyclictest1319-21snmpd21:05:282
216299610,19cyclictest24539-21df_abs22:05:142
2163996031,7cyclictest41-21ksoftirqd/323:25:133
2163996031,7cyclictest41-21ksoftirqd/320:25:013
2163996030,6cyclictest41-21ksoftirqd/320:00:003
2163996029,7cyclictest41-21ksoftirqd/322:55:133
2163996029,10cyclictest41-21ksoftirqd/320:25:193
2163996027,9cyclictest41-21ksoftirqd/320:00:143
2163996027,10cyclictest41-21ksoftirqd/322:15:133
2163996026,7cyclictest41-21ksoftirqd/319:45:143
2163996025,4cyclictest41-21ksoftirqd/321:10:003
2163996025,10cyclictest41-21ksoftirqd/323:10:003
216299600,25cyclictest0-21swapper/222:13:262
216299600,20cyclictest7725-21fschecks_count19:20:162
2163995933,7cyclictest41-21ksoftirqd/321:35:143
2163995931,7cyclictest41-21ksoftirqd/322:40:223
2163995930,8cyclictest41-21ksoftirqd/321:30:263
2163995930,8cyclictest41-21ksoftirqd/321:30:263
2163995930,7cyclictest41-21ksoftirqd/321:55:013
2163995930,7cyclictest41-21ksoftirqd/321:40:253
2163995929,7cyclictest41-21ksoftirqd/300:00:283
2163995928,8cyclictest41-21ksoftirqd/319:30:173
2163995928,7cyclictest41-21ksoftirqd/322:30:143
2163995926,7cyclictest41-21ksoftirqd/322:50:133
2163995926,4cyclictest41-21ksoftirqd/320:30:133
2163995925,9cyclictest41-21ksoftirqd/319:40:163
2162995912,25cyclictest4665-21expr22:30:132
216299590,26cyclictest0-21swapper/220:37:162
216299590,26cyclictest0-21swapper/220:37:162
2159995931,7cyclictest9-21ksoftirqd/022:30:010
2159995926,5cyclictest9-21ksoftirqd/000:05:310
2159995924,6cyclictest9-21ksoftirqd/023:35:130
2163995830,7cyclictest41-21ksoftirqd/322:50:013
2163995829,7cyclictest41-21ksoftirqd/319:15:213
2163995829,7cyclictest41-21ksoftirqd/300:35:003
2163995828,7cyclictest41-21ksoftirqd/300:20:193
2163995827,8cyclictest41-21ksoftirqd/300:10:273
2163995827,7cyclictest41-21ksoftirqd/320:50:133
2163995827,3cyclictest41-21ksoftirqd/319:35:163
2163995826,7cyclictest41-21ksoftirqd/323:55:113
216299580,20cyclictest26842-21date20:00:012
2159995828,4cyclictest9-21ksoftirqd/020:45:290
2159995820,10cyclictest9-21ksoftirqd/022:40:180
2163995733,7cyclictest41-21ksoftirqd/320:50:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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