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2026-03-24 - 17:23
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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 Mar 24, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312402206173,22sleep10-21swapper/107:08:141
312792205171,22sleep30-21swapper/307:08:443
312812203169,22sleep00-21swapper/007:08:450
311542201168,22sleep20-21swapper/207:07:062
941721330,5sleep13168099cyclictest08:35:261
941721330,5sleep13168099cyclictest08:35:261
323322620,1sleep00-21swapper/007:10:160
31680996016,10cyclictest25-21ksoftirqd/111:20:001
3168299578,17cyclictest1300-21snmpd10:27:363
139391570,1ptp4l391rcuc/311:40:193
44502540,3sleep30-21swapper/307:20:143
3168299549,17cyclictest31366-21cat10:30:193
3168299547,16cyclictest12582-21/usr/sbin/munin08:45:163
190332540,1sleep00-21swapper/008:55:270
3168299537,10cyclictest0-21swapper/311:55:243
139391530,1ptp4l391rcuc/309:10:163
31682994810,8cyclictest29357-21appstreamcli11:35:003
31680994717,4cyclictest25-21ksoftirqd/108:40:191
31680994717,2cyclictest25-21ksoftirqd/109:27:401
3168099467,7cyclictest25-21ksoftirqd/110:43:531
3168099466,7cyclictest25-21ksoftirqd/109:54:391
3168299459,15cyclictest1300-21snmpd08:39:493
3168299459,15cyclictest1300-21snmpd08:39:493
3168299458,7cyclictest15398-21hddtemp_smartct11:05:173
3168299458,17cyclictest16350-21systemctl08:50:253
3168099457,7cyclictest25-21ksoftirqd/109:30:041
3168099457,7cyclictest25-21ksoftirqd/109:30:041
3168099457,6cyclictest25-21ksoftirqd/107:49:361
3168099457,5cyclictest25-21ksoftirqd/110:05:001
3168099457,5cyclictest25-21ksoftirqd/110:05:001
3168099456,6cyclictest25-21ksoftirqd/109:13:311
31680994514,5cyclictest25-21ksoftirqd/112:10:191
139391450,0ptp4l401ktimersoftd/312:36:183
3168299448,15cyclictest1300-21snmpd08:17:083
3168099447,5cyclictest25-21ksoftirqd/110:10:011
3168099446,6cyclictest25-21ksoftirqd/112:22:061
31680994413,6cyclictest25-21ksoftirqd/111:20:221
3168099437,6cyclictest25-21ksoftirqd/111:29:051
31680994328,12cyclictest25-21ksoftirqd/109:20:001
31680994312,9cyclictest25-21ksoftirqd/110:45:221
139391430,0ptp4l401ktimersoftd/309:57:213
3168099427,7cyclictest25-21ksoftirqd/109:40:251
3168099426,4cyclictest25-21ksoftirqd/107:25:001
31680994236,3cyclictest207-21systemd-journal07:35:001
31680994236,3cyclictest207-21systemd-journal07:35:001
3168099421,5cyclictest25-21ksoftirqd/107:15:151
139391420,0ptp4l401ktimersoftd/308:29:153
31682994135,3cyclictest13478-21cron09:55:003
3168099419,4cyclictest25-21ksoftirqd/111:45:241
3168099419,4cyclictest25-21ksoftirqd/111:45:241
3168099418,4cyclictest25-21ksoftirqd/112:35:001
31680994126,3cyclictest25-21ksoftirqd/108:00:151
3167999413,2cyclictest121rcu_preempt11:20:180
31679994110,3cyclictest9-21ksoftirqd/010:40:010
3168299408,10cyclictest31715-21egrep07:10:133
3168099405,6cyclictest25-21ksoftirqd/112:09:591
3168099405,4cyclictest25-21ksoftirqd/108:15:241
31680994035,3cyclictest25-21ksoftirqd/109:40:001
31680994035,3cyclictest25-21ksoftirqd/109:00:001
31680994029,3cyclictest25-21ksoftirqd/111:40:151
31680994026,3cyclictest25-21ksoftirqd/110:25:161
31680994026,3cyclictest25-21ksoftirqd/107:40:151
3168099401,3cyclictest121rcu_preempt12:00:011
3168099397,10cyclictest25-21ksoftirqd/109:55:161
31680993935,2cyclictest25-21ksoftirqd/107:55:001
31680993934,3cyclictest25-21ksoftirqd/108:54:221
31680993934,3cyclictest25-21ksoftirqd/107:40:001
3168099391,8cyclictest25-21ksoftirqd/107:55:151
3167999394,2cyclictest121rcu_preempt09:50:000
3167999393,2cyclictest121rcu_preempt09:50:180
3168299387,15cyclictest7755-21/usr/sbin/munin10:50:253
3168299387,15cyclictest1300-21snmpd07:42:073
31681993834,3cyclictest33-21ksoftirqd/208:10:012
31681993826,9cyclictest33-21ksoftirqd/207:10:262
3168099385,9cyclictest25-21ksoftirqd/110:50:251
31680993833,3cyclictest25-21ksoftirqd/111:10:201
31680993810,8cyclictest25-21ksoftirqd/111:00:151
3167999389,4cyclictest9-21ksoftirqd/012:00:140
31679993833,2cyclictest9-21ksoftirqd/011:45:000
31681993731,4cyclictest33-21ksoftirqd/212:27:462
31680993732,3cyclictest25-21ksoftirqd/109:50:001
31680993731,3cyclictest25-21ksoftirqd/108:45:221
3168099372,4cyclictest25-21ksoftirqd/110:10:131
3168099372,4cyclictest25-21ksoftirqd/108:20:171
3168099371,6cyclictest121rcu_preempt10:55:151
3168099371,5cyclictest25-21ksoftirqd/107:10:271
3167999377,3cyclictest9-21ksoftirqd/007:25:260
3167999374,8cyclictest9-21ksoftirqd/008:45:260
3167999374,3cyclictest121rcu_preempt11:40:000
31679993733,3cyclictest9-21ksoftirqd/012:10:000
31679993733,2cyclictest9-21ksoftirqd/012:40:010
31679993733,2cyclictest9-21ksoftirqd/010:20:000
31679993732,3cyclictest9-21ksoftirqd/011:50:000
31679993732,3cyclictest9-21ksoftirqd/011:50:000
31679993722,3cyclictest9-21ksoftirqd/012:10:230
134491370,2getstats0-21swapper/311:32:573
31681993631,3cyclictest33-21ksoftirqd/211:00:002
31681993630,3cyclictest33-21ksoftirqd/208:20:002
3168099367,5cyclictest25-21ksoftirqd/110:15:131
3168099366,6cyclictest25-21ksoftirqd/109:00:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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