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2026-08-31 - 11:17
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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 rackdslot4.osadl.org (updated Mon Aug 31, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591236168,23phc2sys0-21swapper/319:08:053
182742206174,21sleep20-21swapper/219:07:532
181352201167,22sleep00-21swapper/019:06:090
181312201167,23sleep10-21swapper/119:06:071
325221530,1sleep30-21swapper/300:05:003
1844029069,11sleep20-21swapper/219:10:022
134991770,7getstats1873599cyclictest00:24:013
18733997132,3cyclictest25-21ksoftirqd/122:25:221
1873599627,11cyclictest23044-21cat23:40:003
258392610,4sleep0101ktimersoftd/022:40:000
1873599608,11cyclictest11821-21cut21:05:203
1873599595,11cyclictest16510-21df_abs22:20:153
1873599586,12cyclictest19800-21cut21:20:263
1873599586,11cyclictest24112-21sed20:25:143
1873599586,11cyclictest14885-21cut22:15:223
1873599577,16cyclictest25885-21/usr/sbin/munin23:45:203
1873599576,17cyclictest8363-21latency_hist22:05:013
138491560,1ptp4l25272-21wc19:20:283
1873599556,10cyclictest22834-21sed19:15:243
138491550,1ptp4l391rcuc/323:20:273
1873599546,16cyclictest26028-21/usr/sbin/munin21:35:273
1873599536,19cyclictest30066-21mailstats20:35:233
18733995320,10cyclictest25-21ksoftirqd/121:55:001
1873299530,2cyclictest121rcu_preempt19:50:000
1873599505,16cyclictest5207-21awk00:05:273
18733995014,9cyclictest25-21ksoftirqd/122:15:011
138491490,1ptp4l401ktimersoftd/322:45:133
138491490,1ptp4l401ktimersoftd/322:45:123
18732994818,4cyclictest9-21ksoftirqd/023:55:140
18733994742,3cyclictest25-21ksoftirqd/120:15:001
18733994714,10cyclictest25-21ksoftirqd/100:15:151
18733994714,10cyclictest25-21ksoftirqd/100:15:141
18732994740,5cyclictest17989-21cron23:30:010
18733994632,3cyclictest25-21ksoftirqd/120:39:591
18733994614,11cyclictest25-21ksoftirqd/121:40:181
18733994613,9cyclictest25-21ksoftirqd/123:55:131
18733994612,6cyclictest25-21ksoftirqd/121:59:591
1873599456,8cyclictest22713-21python20:20:263
1873599456,8cyclictest22713-21python20:20:263
1873499450,42cyclictest15551-21grep23:25:002
1873399457,8cyclictest25-21ksoftirqd/123:15:131
18733994526,3cyclictest25-21ksoftirqd/123:25:001
18733994516,8cyclictest25-21ksoftirqd/100:30:161
1873399451,3cyclictest25-21ksoftirqd/121:10:251
18733994513,9cyclictest25-21ksoftirqd/120:55:011
18733994512,7cyclictest25-21ksoftirqd/100:20:131
18733994511,3cyclictest25-21ksoftirqd/100:25:211
18733994414,9cyclictest25-21ksoftirqd/121:45:251
18733994411,7cyclictest25-21ksoftirqd/100:05:001
18733994410,4cyclictest25-21ksoftirqd/123:25:241
1873399439,3cyclictest25-21ksoftirqd/122:20:261
1873399438,4cyclictest25-21ksoftirqd/122:35:331
1873399437,8cyclictest25-21ksoftirqd/119:45:131
18733994331,9cyclictest25-21ksoftirqd/120:30:241
18733994314,9cyclictest25-21ksoftirqd/119:55:011
18733994312,4cyclictest25-21ksoftirqd/122:05:231
1873399430,2cyclictest121rcu_preempt21:30:011
18732994336,4cyclictest8282-21cron21:00:010
138491430,0ptp4l401ktimersoftd/321:48:253
18735994212,28cyclictest25733-21kworker/3:020:42:033
1873399427,9cyclictest25-21ksoftirqd/121:00:241
1873399426,9cyclictest25-21ksoftirqd/123:50:231
1873399426,8cyclictest25-21ksoftirqd/120:05:261
1873399425,8cyclictest25-21ksoftirqd/123:40:151
1873399425,8cyclictest25-21ksoftirqd/119:10:271
1873399424,6cyclictest25-21ksoftirqd/100:35:231
18733994236,3cyclictest25-21ksoftirqd/121:35:011
18733994214,4cyclictest25-21ksoftirqd/122:50:231
18733994212,8cyclictest25-21ksoftirqd/121:05:261
18733994210,3cyclictest25-21ksoftirqd/119:40:131
1873399420,3cyclictest121rcu_preempt00:10:131
1873299428,4cyclictest9-21ksoftirqd/020:00:240
138491420,0ptp4l401ktimersoftd/323:29:353
138491420,0ptp4l401ktimersoftd/320:48:083
18734994136,3cyclictest5746-21cron22:00:002
1873399419,4cyclictest25-21ksoftirqd/120:40:251
1873399418,7cyclictest25-21ksoftirqd/120:45:251
1873399418,4cyclictest25-21ksoftirqd/123:35:141
1873399417,8cyclictest25-21ksoftirqd/123:30:241
1873399417,8cyclictest25-21ksoftirqd/121:35:231
1873399417,7cyclictest25-21ksoftirqd/120:00:161
1873399417,7cyclictest25-21ksoftirqd/119:25:281
1873399416,9cyclictest25-21ksoftirqd/120:55:191
1873399416,8cyclictest25-21ksoftirqd/119:50:231
1873399415,6cyclictest25-21ksoftirqd/122:10:201
18733994136,3cyclictest25-21ksoftirqd/122:35:001
18733994125,5cyclictest25-21ksoftirqd/121:20:291
1873399412,3cyclictest15950-21kworker/1:220:25:221
18732994136,3cyclictest23478-21cron19:20:000
18735994035,3cyclictest15964-21cron20:10:003
18734994011,27cyclictest0-21swapper/221:15:342
1873399409,5cyclictest25-21ksoftirqd/122:55:151
1873399408,9cyclictest25-21ksoftirqd/121:15:221
1873399407,8cyclictest25-21ksoftirqd/123:00:251
1873399406,7cyclictest25-21ksoftirqd/123:45:141
1873399404,8cyclictest25-21ksoftirqd/123:05:151
1873399403,8cyclictest25-21ksoftirqd/119:20:291
18733994035,3cyclictest25-21ksoftirqd/119:19:591
18733994012,7cyclictest25-21ksoftirqd/100:05:131
18733994011,10cyclictest25-21ksoftirqd/123:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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