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2026-06-09 - 08:43
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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 Tue Jun 09, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269902224197,18sleep10-21swapper/119:07:591
139491205172,22phc2sys0-21swapper/319:06:243
269072203169,23sleep00-21swapper/019:07:010
270782201169,21sleep20-21swapper/219:09:082
276221340,3sleep32744099cyclictest19:25:173
2743899616,11cyclictest20229-21sort23:20:251
2743899616,11cyclictest20229-21sort23:20:251
113472600,5sleep02743799cyclictest21:55:250
2743899595,12cyclictest29064-21cat22:35:011
27439995815,9cyclictest33-21ksoftirqd/223:55:002
34592570,1sleep10-21swapper/119:25:241
2743899565,12cyclictest2088-21cut22:45:151
139391560,1ptp4l401ktimersoftd/320:55:153
2743899555,16cyclictest11694-21ptp4l00:10:231
2743899545,12cyclictest29878-21cpu19:15:131
2743899545,11cyclictest25411-21sed22:25:181
2743899535,12cyclictest15660-21sed19:50:201
2743899534,11cyclictest28306-21cpu23:40:131
2743899525,17cyclictest31652-21cpu22:40:121
139391520,1ptp4l401ktimersoftd/300:36:293
2743999515,3cyclictest121rcu_preempt23:40:232
2743899513,17cyclictest0-21swapper/121:35:011
2743899486,13cyclictest3601-21if_enp4s023:55:171
2743899485,16cyclictest12757-21/usr/sbin/munin00:15:201
2743899476,12cyclictest11268-21awk21:55:251
2743899476,11cyclictest13925-21head22:00:261
2743899463,9cyclictest0-21swapper/120:00:161
27439994533,3cyclictest33-21ksoftirqd/222:30:152
27439994515,7cyclictest33-21ksoftirqd/200:20:002
27439994513,4cyclictest33-21ksoftirqd/221:35:192
27439994414,3cyclictest33-21ksoftirqd/220:55:182
2743899444,8cyclictest31655-21meminfo23:45:201
27440994338,3cyclictest23056-21fschecks_count21:15:143
27440994337,3cyclictest41-21ksoftirqd/321:59:593
27439994334,8cyclictest33-21ksoftirqd/221:55:252
27439994332,9cyclictest33-21ksoftirqd/219:15:242
27439994332,9cyclictest33-21ksoftirqd/200:30:262
27439994316,3cyclictest33-21ksoftirqd/223:25:262
2743899435,10cyclictest319-21date20:25:251
139391430,0ptp4l401ktimersoftd/322:16:083
139391430,0ptp4l401ktimersoftd/319:20:013
2743999429,5cyclictest33-21ksoftirqd/223:05:192
27439994236,3cyclictest33-21ksoftirqd/220:44:592
27439994230,9cyclictest33-21ksoftirqd/223:45:242
2743999421,3cyclictest121rcu_preempt22:00:272
27439994212,7cyclictest33-21ksoftirqd/222:19:592
139391420,0ptp4l401ktimersoftd/323:18:583
139391420,0ptp4l401ktimersoftd/323:18:583
2743999416,4cyclictest33-21ksoftirqd/222:20:272
2743999415,5cyclictest33-21ksoftirqd/219:10:242
27439994135,3cyclictest33-21ksoftirqd/222:40:012
27439994130,2cyclictest33-21ksoftirqd/219:20:182
27439994114,7cyclictest33-21ksoftirqd/222:25:252
2743999411,3cyclictest121rcu_preempt21:45:002
27439994111,4cyclictest33-21ksoftirqd/220:35:242
2743899415,8cyclictest27468-21apt-get19:10:111
27438994136,3cyclictest23249-21cron23:30:001
27440994035,3cyclictest41-21ksoftirqd/321:50:013
2743999407,6cyclictest33-21ksoftirqd/223:10:192
27439994035,3cyclictest33-21ksoftirqd/223:15:232
27439994035,3cyclictest33-21ksoftirqd/223:15:232
27439994034,3cyclictest33-21ksoftirqd/219:50:002
27439994015,7cyclictest33-21ksoftirqd/221:30:002
2743899404,8cyclictest22551-21df00:35:131
1394914031,4phc2sys0-21swapper/319:10:013
2743999399,3cyclictest33-21ksoftirqd/219:25:202
2743999397,10cyclictest33-21ksoftirqd/221:00:212
27439993934,3cyclictest33-21ksoftirqd/219:45:012
2743999393,3cyclictest33-21ksoftirqd/222:50:092
27439993928,9cyclictest33-21ksoftirqd/220:45:152
27439993912,7cyclictest33-21ksoftirqd/222:05:242
27439993911,7cyclictest33-21ksoftirqd/222:55:192
2743999391,10cyclictest33-21ksoftirqd/222:10:172
2743899394,9cyclictest12346-21irqstats23:05:211
2743999389,7cyclictest33-21ksoftirqd/220:50:192
2743999389,6cyclictest33-21ksoftirqd/200:00:262
2743999389,6cyclictest33-21ksoftirqd/200:00:262
2743999387,6cyclictest33-21ksoftirqd/200:10:102
2743999387,4cyclictest33-21ksoftirqd/221:30:142
2743999385,5cyclictest33-21ksoftirqd/220:30:232
2743999385,2cyclictest121rcu_preempt20:10:302
27439993833,3cyclictest33-21ksoftirqd/223:40:002
27439993833,3cyclictest33-21ksoftirqd/200:00:012
27439993831,4cyclictest33-21ksoftirqd/200:35:142
2743999383,10cyclictest33-21ksoftirqd/219:35:012
27439993830,5cyclictest3776-21cron22:50:012
27439993828,3cyclictest33-21ksoftirqd/200:21:412
2743999381,6cyclictest33-21ksoftirqd/220:20:212
27439993811,7cyclictest33-21ksoftirqd/220:00:152
2743899384,8cyclictest17456-21perl19:55:161
139391380,0ptp4l401ktimersoftd/323:50:153
27440993732,3cyclictest41-21ksoftirqd/323:00:113
27440993732,3cyclictest41-21ksoftirqd/320:30:003
2743999377,3cyclictest33-21ksoftirqd/221:14:182
27439993733,2cyclictest33-21ksoftirqd/221:10:002
27439993732,3cyclictest33-21ksoftirqd/223:20:132
27439993732,3cyclictest33-21ksoftirqd/223:20:132
27439993732,3cyclictest33-21ksoftirqd/223:05:012
27439993731,3cyclictest33-21ksoftirqd/221:50:012
27439993731,3cyclictest33-21ksoftirqd/220:20:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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