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2025-10-31 - 14:38
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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 Oct 31, 2025 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248782202169,22sleep00-21swapper/019:08:470
246362202167,23sleep10-21swapper/119:05:461
246582200167,22sleep30-21swapper/319:06:043
246372195162,22sleep20-21swapper/219:05:482
134991640,1ptp4l401ktimersoftd/321:25:183
253062620,6sleep02526499cyclictest22:25:000
134991550,1ptp4l401ktimersoftd/323:40:303
134991540,1ptp4l401ktimersoftd/323:22:493
134991530,1ptp4l401ktimersoftd/322:00:143
80662520,2sleep00-21swapper/021:50:130
25264995120,4cyclictest9-21ksoftirqd/023:10:170
163702510,2sleep00-21swapper/019:55:200
25264995021,7cyclictest9-21ksoftirqd/023:05:000
25264995015,4cyclictest9-21ksoftirqd/019:45:000
25264994920,3cyclictest9-21ksoftirqd/019:40:200
25264994914,7cyclictest9-21ksoftirqd/023:50:000
242412490,3sleep00-21swapper/023:25:220
208442490,2sleep20-21swapper/223:20:142
270652480,2sleep30-21swapper/323:30:263
2526499489,6cyclictest9-21ksoftirqd/021:25:240
2526499489,6cyclictest9-21ksoftirqd/020:44:590
25264994816,3cyclictest9-21ksoftirqd/020:35:180
25264994811,6cyclictest9-21ksoftirqd/000:00:260
2526499479,6cyclictest9-21ksoftirqd/021:30:200
2526499479,5cyclictest9-21ksoftirqd/021:35:260
25264994714,5cyclictest9-21ksoftirqd/019:35:280
25264994710,6cyclictest9-21ksoftirqd/000:35:260
2526599461,43cyclictest24237-21kworker/1:119:10:281
25264994618,7cyclictest9-21ksoftirqd/000:20:220
25264994616,4cyclictest9-21ksoftirqd/020:05:220
25264994613,7cyclictest9-21ksoftirqd/020:50:230
25264994610,6cyclictest9-21ksoftirqd/023:35:120
134991460,0ptp4l401ktimersoftd/323:29:033
25265994532,10cyclictest25-21ksoftirqd/119:34:591
2526499459,6cyclictest9-21ksoftirqd/023:05:240
2526499458,6cyclictest9-21ksoftirqd/022:05:140
25264994516,4cyclictest9-21ksoftirqd/020:25:410
2526499451,3cyclictest9-21ksoftirqd/019:30:000
2526499448,6cyclictest9-21ksoftirqd/019:30:180
2526499448,5cyclictest9-21ksoftirqd/021:10:140
2526499448,4cyclictest9-21ksoftirqd/023:30:220
25264994415,3cyclictest9-21ksoftirqd/022:25:240
25264994411,6cyclictest9-21ksoftirqd/021:55:140
2526599438,22cyclictest22488-21seq21:11:221
2526499438,6cyclictest9-21ksoftirqd/022:15:270
2526499438,5cyclictest9-21ksoftirqd/023:15:160
2526499438,4cyclictest9-21ksoftirqd/022:50:240
2526499433,6cyclictest9-21ksoftirqd/020:15:290
25264994314,4cyclictest9-21ksoftirqd/000:18:040
25264994313,4cyclictest9-21ksoftirqd/021:18:280
25264994312,4cyclictest9-21ksoftirqd/021:24:260
25264994310,4cyclictest9-21ksoftirqd/023:40:190
25266994232,8cyclictest33-21ksoftirqd/223:50:002
2526499428,6cyclictest9-21ksoftirqd/023:55:180
25264994217,7cyclictest9-21ksoftirqd/020:45:230
25264994215,4cyclictest9-21ksoftirqd/020:23:120
25264994213,4cyclictest9-21ksoftirqd/021:41:320
25264994213,4cyclictest9-21ksoftirqd/000:32:020
25264994212,3cyclictest9-21ksoftirqd/021:45:170
25266994135,3cyclictest32685-21cron22:40:002
25266994135,3cyclictest12904-21cron23:05:002
2526499417,5cyclictest9-21ksoftirqd/022:40:140
25264994132,2cyclictest9-21ksoftirqd/022:10:190
25264994114,6cyclictest9-21ksoftirqd/022:35:310
2526499411,3cyclictest9-21ksoftirqd/021:05:230
25264994113,3cyclictest9-21ksoftirqd/000:10:140
134991410,0ptp4l401ktimersoftd/322:21:433
134991410,0ptp4l401ktimersoftd/319:49:183
134991410,0ptp4l401ktimersoftd/300:15:223
25266994034,4cyclictest32516-21grep19:25:002
2526599409,29cyclictest24237-21kworker/1:120:20:471
2526499408,4cyclictest9-21ksoftirqd/020:30:230
25264994034,3cyclictest9-21ksoftirqd/022:50:010
2526499402,2cyclictest13294-21cron00:10:010
25264994010,4cyclictest9-21ksoftirqd/000:29:350
134991400,1ptp4l401ktimersoftd/320:23:553
2526499396,4cyclictest9-21ksoftirqd/019:10:140
25266993833,3cyclictest33-21ksoftirqd/220:00:012
2526499382,2cyclictest121rcu_preempt21:00:140
134991380,0ptp4l401ktimersoftd/323:39:023
36998370,3rtkit-daemon25873-21apt-get00:35:151
36998370,2rtkit-daemon0-21swapper/119:20:291
25267993731,4cyclictest41-21ksoftirqd/323:03:593
25266993732,3cyclictest33-21ksoftirqd/223:20:002
25266993732,3cyclictest33-21ksoftirqd/220:30:012
25266993731,4cyclictest33-21ksoftirqd/222:06:132
25266993730,5cyclictest33-21ksoftirqd/200:38:502
25266993725,10cyclictest33-21ksoftirqd/222:20:262
25265993731,4cyclictest25-21ksoftirqd/122:27:581
25265993730,4cyclictest27743-21dump-pmu-power21:25:011
25265993730,4cyclictest25-21ksoftirqd/121:46:061
2526499373,2cyclictest9-21ksoftirqd/022:55:160
25264993732,3cyclictest9-21ksoftirqd/019:25:000
25264993732,2cyclictest9-21ksoftirqd/020:05:010
25264993730,4cyclictest9-21ksoftirqd/023:51:130
25267993631,3cyclictest41-21ksoftirqd/320:15:133
25267993630,4cyclictest41-21ksoftirqd/323:45:033
25267993630,4cyclictest41-21ksoftirqd/322:57:283
25267993630,4cyclictest41-21ksoftirqd/322:51:313
25267993630,4cyclictest41-21ksoftirqd/321:47:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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