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2025-12-09 - 04:35
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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 rackcslot4.osadl.org (updated Tue Dec 09, 2025 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9248152267185,28sleep00-21swapper/019:09:580
9247822258179,64sleep10-21swapper/119:09:401
924919991194,95cyclictest1109434-21expr00:20:160
125899760,20rtkit-daemon1257-21rtkit-daemon21:55:261
125899590,4rtkit-daemon1257-21rtkit-daemon21:50:270
125899550,3rtkit-daemon1257-21rtkit-daemon21:25:070
125899510,5rtkit-daemon939770-21apt-get19:45:121
125899490,4rtkit-daemon1257-21rtkit-daemon23:07:220
125899480,3rtkit-daemon1257-21rtkit-daemon22:21:320
125899470,4rtkit-daemon1257-21rtkit-daemon22:26:570
10300252460,4sleep10-21swapper/122:26:211
9585132400,2sleep10-21swapper/120:30:201
125899390,3rtkit-daemon0-21swapper/022:42:400
125899380,3rtkit-daemon0-21swapper/121:43:131
9295562370,19sleep10-21swapper/119:20:121
924919993710,4cyclictest13-21ksoftirqd/000:30:000
125899370,5rtkit-daemon1102059-21munin-run00:10:011
125899370,3rtkit-daemon0-21swapper/119:27:551
125899370,3rtkit-daemon0-21swapper/021:16:010
924919993610,4cyclictest13-21ksoftirqd/000:00:010
125899360,5rtkit-daemon1066581-21ssh23:18:051
125899360,4rtkit-daemon984429-21ssh21:24:380
125899360,3rtkit-daemon0-21swapper/022:12:570
125899350,3rtkit-daemon0-21swapper/122:09:201
125899350,3rtkit-daemon0-21swapper/020:20:041
125899350,1rtkit-daemon1257-21rtkit-daemon22:52:320
924919993411,6cyclictest13-21ksoftirqd/023:02:280
125899340,4rtkit-daemon1257-21rtkit-daemon19:51:200
125899340,4rtkit-daemon0-21swapper/120:30:250
125899340,3rtkit-daemon1257-21rtkit-daemon23:48:061
125899340,3rtkit-daemon0-21swapper/100:06:100
125899340,3rtkit-daemon0-21swapper/022:21:471
125899340,3rtkit-daemon0-21swapper/022:07:120
125899340,3rtkit-daemon0-21swapper/021:04:590
125899330,4rtkit-daemon1257-21rtkit-daemon21:53:131
125899330,4rtkit-daemon1257-21rtkit-daemon20:38:051
125899330,4rtkit-daemon1257-21rtkit-daemon20:18:150
125899330,3rtkit-daemon0-21swapper/100:38:551
125899330,3rtkit-daemon0-21swapper/020:12:501
924919993216,14cyclictest13-21ksoftirqd/023:20:000
924919993212,4cyclictest13-21ksoftirqd/020:05:000
125899320,3rtkit-daemon1257-21rtkit-daemon23:13:580
125899320,3rtkit-daemon0-21swapper/123:49:320
125899320,3rtkit-daemon0-21swapper/119:58:250
125899320,3rtkit-daemon0-21swapper/119:32:540
125899320,3rtkit-daemon0-21swapper/020:09:361
92491999318,6cyclictest13-21ksoftirqd/021:10:150
125899310,4rtkit-daemon1257-21rtkit-daemon21:45:311
125899310,3rtkit-daemon1257-21rtkit-daemon23:55:051
125899310,3rtkit-daemon1257-21rtkit-daemon20:22:030
125899310,3rtkit-daemon1257-21rtkit-daemon19:18:330
125899310,3rtkit-daemon0-21swapper/100:12:490
125899310,3rtkit-daemon0-21swapper/022:34:181
125899310,3rtkit-daemon0-21swapper/021:36:041
924925993027,2cyclictest63750irq/132-enp2s000:00:261
92492599302,14cyclictest1116304-21taskset00:30:151
92491999309,4cyclictest13-21ksoftirqd/019:25:000
924919993017,2cyclictest1080083-21ssh23:36:450
924919993016,2cyclictest1097463-21ssh00:01:430
924919993015,5cyclictest994179-21ssh21:36:330
125899300,3rtkit-daemon0-21swapper/121:43:190
125899300,3rtkit-daemon0-21swapper/023:27:561
125899300,3rtkit-daemon0-21swapper/022:58:081
92491999298,4cyclictest13-21ksoftirqd/000:39:020
92491999294,4cyclictest13-21ksoftirqd/022:35:010
924919992916,2cyclictest1083004-21kworker/u8:223:42:150
125899290,4rtkit-daemon1012388-21ssh22:01:411
125899290,3rtkit-daemon0-21swapper/119:28:360
125899290,3rtkit-daemon0-21swapper/023:14:191
125899290,3rtkit-daemon0-21swapper/023:02:031
125899290,3rtkit-daemon0-21swapper/020:56:481
125899290,3rtkit-daemon0-21swapper/020:53:411
92492599281,8cyclictest0-21swapper/121:11:261
924919992825,2cyclictest63750irq/132-enp2s021:08:080
125899280,4rtkit-daemon1257-21rtkit-daemon21:07:461
125899280,3rtkit-daemon1257-21rtkit-daemon19:12:500
125899280,3rtkit-daemon0-21swapper/121:45:190
125899280,3rtkit-daemon0-21swapper/023:08:271
125899280,3rtkit-daemon0-21swapper/019:40:331
924925992721,4cyclictest977586-21ssh21:15:051
92491999278,9cyclictest13-21ksoftirqd/021:55:030
92491999278,4cyclictest13-21ksoftirqd/023:24:170
924919992710,2cyclictest141rcu_preempt21:30:200
125899270,22rtkit-daemon924914-21cyclictest22:51:491
92492599262,17cyclictest1042355-21apt-get22:45:121
924925992614,7cyclictest1088648-21apt-get23:50:161
92492599261,23cyclictest970170-21diskstats21:00:181
924925992611,9cyclictest927603-21apt-get19:15:161
924925992611,13cyclictest1077952-21latency_hist23:35:011
92491999268,2cyclictest141rcu_preempt22:56:580
924919992616,6cyclictest13-21ksoftirqd/019:45:130
924919992610,2cyclictest141rcu_preempt22:16:320
924919992610,2cyclictest141rcu_preempt22:16:320
125899260,3rtkit-daemon0-21swapper/022:38:171
125899260,21rtkit-daemon924914-21cyclictest21:28:441
125899260,1rtkit-daemon1257-21rtkit-daemon22:31:160
92492599253,15cyclictest1017452-21apt-get22:10:151
92492599251,6cyclictest925389-21fschecks_time19:10:191
92492599250,8cyclictest945927-21cat20:00:011
92491999259,9cyclictest965623-21apt-get20:50:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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