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2026-06-06 - 22:53
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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 Sat Jun 06, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24772229163,21sleep20-21swapper/219:09:382
138591205170,23phc2sys0-21swapper/319:06:363
22072204172,21sleep00-21swapper/019:06:470
22332202168,23sleep10-21swapper/119:07:081
1839421860,7sleep1279999cyclictest21:50:151
186521560,7sleep0279899cyclictest00:30:210
90352590,4sleep19040-21latency22:35:191
280199594,11cyclictest16953-21ps22:50:233
280199562,15cyclictest17117-21ssh20:40:243
280199553,12cyclictest13027-21date20:35:003
280199502,17cyclictest3621-21/usr/sbin/munin21:20:163
280099481,44cyclictest0-21swapper/222:40:242
280199461,17cyclictest17961-21/usr/sbin/munin00:00:223
138491460,0ptp4l401ktimersoftd/322:01:223
2800994541,2cyclictest12799-21turbostat.cron23:49:592
135191450,9getstats0-21swapper/322:15:503
138491440,0ptp4l401ktimersoftd/319:39:243
2801994338,3cyclictest13536-21fschecks_count20:35:163
280099431,39cyclictest14872-21cron19:35:002
138491430,0ptp4l401ktimersoftd/320:47:043
2800994214,27cyclictest0-21swapper/221:00:232
280099420,40cyclictest0-21swapper/219:10:252
2799994237,3cyclictest25-21ksoftirqd/121:00:011
138491420,35ptp4l0-21swapper/319:10:013
138491420,0ptp4l401ktimersoftd/323:01:463
2800994133,6cyclictest33-21ksoftirqd/223:30:002
2800994133,6cyclictest33-21ksoftirqd/223:29:592
280099410,39cyclictest11607-21ptp4l19:25:232
2799994136,3cyclictest25-21ksoftirqd/123:14:591
138491410,0ptp4l401ktimersoftd/321:37:263
280199402,17cyclictest1319-21snmpd19:30:573
280099409,29cyclictest0-21swapper/200:18:252
2799994035,3cyclictest25-21ksoftirqd/122:15:011
2798993935,2cyclictest9-21ksoftirqd/000:15:010
280199383,7cyclictest30817-21diskstats23:20:163
280199382,16cyclictest1319-21snmpd23:42:143
280099389,27cyclictest0-21swapper/219:55:332
2799993834,3cyclictest25-21ksoftirqd/120:25:011
2799993832,4cyclictest25-21ksoftirqd/119:15:001
2798993834,2cyclictest9-21ksoftirqd/019:20:000
2798993832,4cyclictest9-21ksoftirqd/022:46:070
2798993832,3cyclictest9-21ksoftirqd/019:40:170
2798993830,4cyclictest16057-21grep22:50:150
2800993732,3cyclictest33-21ksoftirqd/200:20:292
2799993732,3cyclictest25-21ksoftirqd/123:50:191
2799993732,3cyclictest25-21ksoftirqd/120:15:131
2799993732,3cyclictest25-21ksoftirqd/119:55:001
2799993732,3cyclictest25-21ksoftirqd/100:00:011
2799993731,4cyclictest25-21ksoftirqd/119:18:271
2799993730,5cyclictest25-21ksoftirqd/100:01:211
2798993733,2cyclictest9-21ksoftirqd/023:10:010
279899373,2cyclictest121rcu_preempt23:55:130
279899373,2cyclictest121rcu_preempt22:25:210
279899373,2cyclictest121rcu_preempt00:15:180
2798993732,3cyclictest9-21ksoftirqd/023:40:000
2798993732,3cyclictest9-21ksoftirqd/023:20:150
2798993732,3cyclictest9-21ksoftirqd/021:30:180
2798993732,3cyclictest9-21ksoftirqd/021:00:230
2798993732,3cyclictest9-21ksoftirqd/019:15:010
2798993731,3cyclictest9-21ksoftirqd/020:40:120
2798993731,3cyclictest9-21ksoftirqd/019:20:120
2801993630,4cyclictest41-21ksoftirqd/320:12:213
2801993630,4cyclictest41-21ksoftirqd/320:12:213
2800993630,4cyclictest33-21ksoftirqd/221:58:182
2800993630,4cyclictest33-21ksoftirqd/200:30:552
2800993630,4cyclictest33-21ksoftirqd/200:14:022
2800993629,4cyclictest33-21ksoftirqd/221:33:112
280099361,13cyclictest16230-21tr23:55:172
2799993631,3cyclictest25-21ksoftirqd/100:19:591
2799993631,2cyclictest25-21ksoftirqd/121:40:001
2799993630,4cyclictest25-21ksoftirqd/122:52:251
2799993630,4cyclictest25-21ksoftirqd/122:06:161
2799993630,4cyclictest25-21ksoftirqd/121:40:171
2799993630,4cyclictest25-21ksoftirqd/120:32:491
2799993630,4cyclictest25-21ksoftirqd/119:36:171
279899364,1cyclictest121rcu_preempt21:25:180
279899363,2cyclictest121rcu_preempt20:45:240
2798993632,3cyclictest9-21ksoftirqd/019:30:180
2798993632,2cyclictest9-21ksoftirqd/021:15:130
2798993632,2cyclictest9-21ksoftirqd/021:15:120
2798993631,3cyclictest9-21ksoftirqd/020:00:010
2798993631,2cyclictest9-21ksoftirqd/000:10:000
2798993630,3cyclictest9-21ksoftirqd/023:41:580
2798993630,3cyclictest9-21ksoftirqd/021:20:150
50798350,6rtkit-daemon28147-21cstates23:15:140
2801993530,3cyclictest41-21ksoftirqd/322:45:113
2801993530,3cyclictest41-21ksoftirqd/319:51:293
2801993529,4cyclictest41-21ksoftirqd/322:36:553
2801993528,4cyclictest41-21ksoftirqd/300:21:323
2800993530,3cyclictest33-21ksoftirqd/222:38:302
2800993529,4cyclictest33-21ksoftirqd/221:13:492
2800993518,14cyclictest33-21ksoftirqd/220:50:002
2800993512,19cyclictest25665-21df_abs22:05:152
2799993531,3cyclictest25-21ksoftirqd/122:29:591
2799993530,3cyclictest25-21ksoftirqd/122:20:171
2799993529,4cyclictest25-21ksoftirqd/123:32:571
2799993529,4cyclictest25-21ksoftirqd/120:48:411
2799993529,4cyclictest25-21ksoftirqd/120:06:411
2799993529,4cyclictest25-21ksoftirqd/100:10:591
2799993529,3cyclictest25-21ksoftirqd/120:40:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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