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2026-04-13 - 13:17
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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 rackdslot3.osadl.org (updated Mon Apr 13, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491205172,22phc2sys0-21swapper/319:06:203
236252203171,21sleep10-21swapper/119:05:551
236822202169,22sleep00-21swapper/019:06:380
236212202168,23sleep20-21swapper/219:05:512
1394918665,11phc2sys0-21swapper/319:10:013
2424299691,29cyclictest11505-21/usr/sbin/munin19:50:172
2424299671,24cyclictest2444-21cat20:40:002
2424299661,23cyclictest13530-21cstates19:55:122
2424299661,21cyclictest0-21swapper/220:50:282
2424299651,22cyclictest13575-21cat22:10:162
2424299640,31cyclictest29849-21cut19:20:182
2424299640,23cyclictest32557-21sed21:40:242
2424299630,30cyclictest22694-21date20:15:002
2424299620,28cyclictest7917-21irqrtprio23:05:192
2424299620,21cyclictest1705-21df_abs19:30:142
2424299610,24cyclictest30566-21awk20:30:162
2424299610,24cyclictest23327-21smartctl20:15:172
59072580,2sleep10-21swapper/120:45:191
92332570,3sleep09234-21idleruntime-cro23:10:000
2424199550,1cyclictest0-21swapper/100:22:531
139391550,1ptp4l401ktimersoftd/322:42:283
139391540,1ptp4l401ktimersoftd/320:29:533
2424299501,19cyclictest0-21swapper/223:10:112
2424299501,19cyclictest0-21swapper/223:10:112
2424299470,45cyclictest0-21swapper/220:20:232
134491450,1getstats0-21swapper/321:12:393
2424199430,42cyclictest0-21swapper/100:15:441
139391430,1ptp4l401ktimersoftd/321:51:353
139391410,0ptp4l401ktimersoftd/320:48:233
24241994035,3cyclictest11580-21perf23:15:011
24241994035,3cyclictest11580-21perf23:15:011
2424199401,36cyclictest26396-21sh19:15:001
139391400,0ptp4l401ktimersoftd/319:35:473
139391400,0ptp4l401ktimersoftd/319:25:193
24241993933,4cyclictest25-21ksoftirqd/120:05:011
24240993934,3cyclictest9-21ksoftirqd/000:20:010
57898380,4rtkit-daemon17652-21memory23:25:193
2424299381,22cyclictest17588-21cat23:25:182
24240993832,4cyclictest9-21ksoftirqd/020:30:000
139391380,1ptp4l401ktimersoftd/319:24:403
139391380,0ptp4l401ktimersoftd/323:55:163
24243993732,3cyclictest41-21ksoftirqd/320:00:013
24242993733,2cyclictest8298-21idleruntime-cro19:44:592
2424299370,23cyclictest19108-21sed21:14:592
2424299370,23cyclictest17846-21cat00:35:012
24241993731,4cyclictest25-21ksoftirqd/121:40:361
24243993632,2cyclictest41-21ksoftirqd/322:14:593
24243993631,3cyclictest41-21ksoftirqd/323:35:003
24243993630,4cyclictest41-21ksoftirqd/323:22:473
24243993630,4cyclictest41-21ksoftirqd/320:35:353
24243993630,4cyclictest41-21ksoftirqd/319:50:583
24243993630,4cyclictest41-21ksoftirqd/300:11:453
2424299360,22cyclictest28694-21awk22:40:232
24241993631,3cyclictest25-21ksoftirqd/121:50:131
24241993630,4cyclictest25-21ksoftirqd/123:57:511
24241993630,4cyclictest25-21ksoftirqd/123:48:441
24241993630,4cyclictest25-21ksoftirqd/123:01:551
24241993630,4cyclictest25-21ksoftirqd/122:35:151
24241993630,4cyclictest25-21ksoftirqd/121:07:501
24241993630,4cyclictest25-21ksoftirqd/119:47:351
24241993630,4cyclictest25-21ksoftirqd/119:30:571
24241993630,4cyclictest25-21ksoftirqd/100:33:341
24243993530,3cyclictest41-21ksoftirqd/323:50:203
24243993530,3cyclictest41-21ksoftirqd/319:15:193
24243993530,3cyclictest41-21ksoftirqd/300:20:003
24243993529,4cyclictest41-21ksoftirqd/321:25:483
24243993529,4cyclictest41-21ksoftirqd/321:25:483
24243993529,4cyclictest41-21ksoftirqd/300:21:273
24243993528,4cyclictest41-21ksoftirqd/323:39:033
2424299355,28cyclictest20962-21kworker/2:100:15:232
24242993529,4cyclictest33-21ksoftirqd/223:50:412
24242993529,4cyclictest33-21ksoftirqd/223:20:292
24242993528,5cyclictest33-21ksoftirqd/222:25:532
2424299351,31cyclictest19965-21awk22:24:592
24241993529,4cyclictest25-21ksoftirqd/122:08:151
24241993529,4cyclictest25-21ksoftirqd/122:01:291
24241993529,4cyclictest25-21ksoftirqd/119:55:091
24241993529,4cyclictest25-21ksoftirqd/119:41:411
24241993528,5cyclictest25-21ksoftirqd/121:33:211
24241993528,4cyclictest25-21ksoftirqd/120:55:421
24241993528,4cyclictest25-21ksoftirqd/120:55:421
24240993529,4cyclictest9-21ksoftirqd/022:10:520
24240993529,4cyclictest9-21ksoftirqd/019:27:320
57898340,4rtkit-daemon12767-21apache219:30:180
24243993429,3cyclictest41-21ksoftirqd/320:50:203
24243993429,3cyclictest41-21ksoftirqd/320:00:143
24243993428,4cyclictest41-21ksoftirqd/322:05:443
24243993428,4cyclictest41-21ksoftirqd/320:22:513
24243993428,4cyclictest41-21ksoftirqd/319:44:283
24243993428,4cyclictest41-21ksoftirqd/300:36:323
24242993428,4cyclictest33-21ksoftirqd/222:30:302
24242993428,4cyclictest33-21ksoftirqd/221:25:322
24242993428,4cyclictest33-21ksoftirqd/221:25:322
24242993428,4cyclictest33-21ksoftirqd/221:02:172
24242993428,4cyclictest33-21ksoftirqd/220:42:162
24242993428,4cyclictest33-21ksoftirqd/219:28:062
2424299341,31cyclictest0-21swapper/222:55:012
2424299341,20cyclictest0-21swapper/219:35:192
2424299340,19cyclictest4695-21phc2sys21:50:232
2424299340,19cyclictest10799-21/usr/sbin/munin00:20:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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