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2026-07-05 - 18:41
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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 Sun Jul 05, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591211144,23phc2sys0-21swapper/307:06:073
120912205170,23sleep10-21swapper/107:09:221
120972203169,22sleep20-21swapper/207:09:272
120952200166,22sleep00-21swapper/007:09:250
369721690,6sleep21244099cyclictest12:15:232
1244099660,24cyclictest8524-21ps12:25:232
1244099651,23cyclictest1-21systemd07:20:192
1244099610,25cyclictest6844-21awk08:00:282
138491580,1ptp4l391rcuc/307:20:223
1244099570,22cyclictest15012-21cpuspeed_turbos08:20:122
1244099530,25cyclictest25356-21sed07:35:162
1244099521,24cyclictest1145-21gunzip12:10:262
138491500,0ptp4l401ktimersoftd/310:48:203
1244099500,24cyclictest10462-21sed12:30:192
1214524735,5sleep30-21swapper/307:10:003
138491440,1ptp4l401ktimersoftd/311:30:233
138491440,0ptp4l401ktimersoftd/308:45:483
1244099440,27cyclictest30603-21irqstats09:55:192
1244099440,27cyclictest30603-21irqstats09:55:192
1243899449,6cyclictest9-21ksoftirqd/008:20:000
12438994414,2cyclictest9-21ksoftirqd/010:45:000
12438994412,16cyclictest9-21ksoftirqd/011:40:000
138491430,0ptp4l401ktimersoftd/310:09:433
138491430,0ptp4l401ktimersoftd/309:45:303
138491430,0ptp4l401ktimersoftd/309:10:153
12440994324,17cyclictest33-21ksoftirqd/207:40:122
138491420,0ptp4l401ktimersoftd/312:13:413
12439994237,3cyclictest25-21ksoftirqd/110:40:001
138491410,0ptp4l401ktimersoftd/308:52:303
1385914019,10phc2sys41-21ksoftirqd/311:10:133
138491400,0ptp4l401ktimersoftd/312:03:223
12440994035,3cyclictest9681-21cron08:10:012
1244099400,28cyclictest14918-21/usr/sbin/munin10:30:192
1243899408,6cyclictest9-21ksoftirqd/011:20:000
1243899404,2cyclictest121rcu_preempt09:05:170
12438994035,2cyclictest9-21ksoftirqd/011:35:000
12440993910,26cyclictest0-21swapper/210:25:242
12439993933,4cyclictest25-21ksoftirqd/109:40:011
12439993932,4cyclictest25-21ksoftirqd/109:25:131
1243899396,6cyclictest9-21ksoftirqd/010:50:170
1243899395,4cyclictest9-21ksoftirqd/010:55:160
12438993933,3cyclictest9-21ksoftirqd/009:00:160
12438993912,7cyclictest9-21ksoftirqd/011:55:150
1243899386,6cyclictest9-21ksoftirqd/010:45:130
1243899384,10cyclictest9-21ksoftirqd/007:25:140
12438993834,2cyclictest9-21ksoftirqd/011:05:000
12438993833,3cyclictest9-21ksoftirqd/011:50:000
12438993832,3cyclictest9-21ksoftirqd/012:15:180
12438993832,3cyclictest9-21ksoftirqd/011:10:260
12438993832,3cyclictest9-21ksoftirqd/010:10:000
12438993832,3cyclictest9-21ksoftirqd/010:05:000
12438993832,3cyclictest9-21ksoftirqd/009:50:250
12438993830,5cyclictest9-21ksoftirqd/012:20:110
1243899382,2cyclictest121rcu_preempt10:20:230
1243899381,6cyclictest9-21ksoftirqd/009:30:260
138491370,0ptp4l401ktimersoftd/310:52:233
138491370,0ptp4l401ktimersoftd/310:40:173
138491370,0ptp4l401ktimersoftd/309:35:273
138491370,0ptp4l401ktimersoftd/307:50:213
12441993732,3cyclictest41-21ksoftirqd/311:42:233
12441993731,4cyclictest41-21ksoftirqd/308:00:003
12441993731,4cyclictest41-21ksoftirqd/308:00:003
12441993730,4cyclictest26926-21cron08:45:013
12440993713,21cyclictest1046-21awk11:05:222
1244099370,28cyclictest0-21swapper/211:50:222
12439993733,2cyclictest25-21ksoftirqd/111:00:001
12439993733,2cyclictest25-21ksoftirqd/110:30:171
12439993732,3cyclictest25811-21kworker/1:210:20:131
12439993731,4cyclictest25-21ksoftirqd/112:09:211
12439993731,4cyclictest25-21ksoftirqd/108:11:591
12439993731,4cyclictest25-21ksoftirqd/107:23:131
12439993730,5cyclictest25-21ksoftirqd/110:27:581
1243899375,6cyclictest9-21ksoftirqd/009:15:170
1243899375,2cyclictest121rcu_preempt12:25:170
1243899374,2cyclictest9-21ksoftirqd/008:35:170
12438993733,2cyclictest9-21ksoftirqd/010:40:000
12438993733,2cyclictest9-21ksoftirqd/007:55:000
1243899373,2cyclictest121rcu_preempt07:35:160
12438993732,3cyclictest9-21ksoftirqd/011:30:010
12438993732,3cyclictest9-21ksoftirqd/011:30:010
12438993732,3cyclictest9-21ksoftirqd/007:15:180
12438993732,3cyclictest9-21ksoftirqd/007:15:170
1243899372,4cyclictest9-21ksoftirqd/008:25:230
12438993723,4cyclictest26952-21latency_hist08:45:000
1243899372,2cyclictest121rcu_preempt11:05:280
1243899372,2cyclictest121rcu_preempt07:30:280
138491360,0ptp4l401ktimersoftd/308:25:213
12441993630,4cyclictest41-21ksoftirqd/308:07:283
1244099362,30cyclictest28987-21head12:00:272
12440993616,18cyclictest33-21ksoftirqd/209:00:122
12440993614,20cyclictest24697-21cat10:50:002
12439993631,3cyclictest25-21ksoftirqd/110:45:001
12439993631,3cyclictest25-21ksoftirqd/109:40:121
12439993630,4cyclictest25-21ksoftirqd/110:17:561
12439993630,4cyclictest25-21ksoftirqd/109:53:491
12439993630,4cyclictest25-21ksoftirqd/108:18:571
12439993629,5cyclictest25-21ksoftirqd/111:06:381
1243899364,2cyclictest9-21ksoftirqd/010:25:130
1243899363,2cyclictest121rcu_preempt09:25:240
1243899363,2cyclictest121rcu_preempt08:10:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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