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2026-08-07 - 15:31
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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 Fri Aug 07, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
99512230163,23sleep30-21swapper/307:07:563
100612203170,22sleep20-21swapper/207:09:152
97952202169,22sleep10-21swapper/107:05:531
97892202169,22sleep00-21swapper/007:05:470
410221690,6sleep01041099cyclictest11:25:190
1041399630,21cyclictest10460-21cat10:30:253
1041399600,20cyclictest23596-21ptp4l07:35:233
1041399600,19cyclictest10269-21chrt11:40:023
130782580,3sleep30-21swapper/307:15:143
139391560,1ptp4l391rcuc/310:35:243
1041399530,20cyclictest2536-21awk11:20:273
199382520,3sleep125-21ksoftirqd/107:30:111
1041399521,35cyclictest30975-21/usr/sbin/munin09:00:143
1041399520,20cyclictest4515-21/usr/sbin/munin12:35:153
1041399500,20cyclictest27639-21seq11:07:013
1041399490,28cyclictest23169-21taskset08:44:343
1041399490,26cyclictest17270-21/usr/sbin/munin09:40:223
10412994818,28cyclictest23512-21phc2sys-jitter07:35:232
1041399471,18cyclictest1300-21snmpd07:21:113
1041399470,20cyclictest1300-21snmpd08:04:243
1041399470,19cyclictest28641-21runrttasks10:01:553
1041399440,27cyclictest1600-21runrttasks12:29:323
1041399430,28cyclictest1300-21snmpd11:55:563
10412994312,29cyclictest0-21swapper/208:00:232
10412994311,29cyclictest0-21swapper/207:50:222
10412994311,29cyclictest0-21swapper/207:50:222
139391420,0ptp4l401ktimersoftd/308:30:173
1041299422,38cyclictest28955-21kworker/2:109:00:242
139391410,0ptp4l401ktimersoftd/311:49:023
139391410,0ptp4l401ktimersoftd/311:17:503
139391410,0ptp4l401ktimersoftd/311:17:493
1041399401,20cyclictest0-21swapper/307:12:313
1041399400,20cyclictest0-21swapper/309:05:523
1041199404,3cyclictest25-21ksoftirqd/107:20:171
10411994036,3cyclictest25-21ksoftirqd/112:30:011
10411994035,3cyclictest25-21ksoftirqd/110:10:001
10410994036,3cyclictest9-21ksoftirqd/008:20:000
10412993912,26cyclictest0-21swapper/212:30:232
1041199399,4cyclictest25-21ksoftirqd/107:10:241
10411993934,3cyclictest25-21ksoftirqd/112:40:011
10411993934,3cyclictest25-21ksoftirqd/108:39:591
10411993931,3cyclictest25-21ksoftirqd/108:15:001
10411993913,7cyclictest25-21ksoftirqd/107:50:131
10411993913,7cyclictest25-21ksoftirqd/107:50:131
10411993910,4cyclictest25-21ksoftirqd/107:35:161
10411993910,3cyclictest25-21ksoftirqd/112:00:241
57898380,2rtkit-daemon577-21rtkit-daemon07:29:560
1041199386,8cyclictest25-21ksoftirqd/111:25:231
1041199385,8cyclictest25-21ksoftirqd/111:40:141
1041199384,9cyclictest25-21ksoftirqd/112:10:131
1041199383,3cyclictest121rcu_preempt08:20:171
10411993833,3cyclictest25-21ksoftirqd/110:00:001
10411993833,3cyclictest25-21ksoftirqd/108:55:241
10411993824,12cyclictest25-21ksoftirqd/111:54:101
10410993832,3cyclictest9-21ksoftirqd/012:40:000
10410993832,3cyclictest9-21ksoftirqd/008:55:170
1041399370,21cyclictest0-21swapper/311:54:253
1041199375,7cyclictest25-21ksoftirqd/109:40:231
1041199373,3cyclictest121rcu_preempt12:30:231
1041199373,3cyclictest121rcu_preempt08:05:231
10411993733,2cyclictest1317-21runrttasks10:38:451
10411993732,3cyclictest25-21ksoftirqd/111:25:001
10411993732,3cyclictest25-21ksoftirqd/110:45:121
10411993732,3cyclictest25-21ksoftirqd/108:54:331
10411993731,4cyclictest25-21ksoftirqd/109:38:461
10411993731,3cyclictest25-21ksoftirqd/107:15:201
10411993730,5cyclictest25-21ksoftirqd/111:38:401
1041199372,3cyclictest25-21ksoftirqd/111:45:191
10411993712,6cyclictest25-21ksoftirqd/108:25:191
10410993732,3cyclictest9-21ksoftirqd/012:15:210
10410993732,3cyclictest9-21ksoftirqd/010:10:010
10410993732,3cyclictest9-21ksoftirqd/009:10:190
10410993731,3cyclictest9-21ksoftirqd/011:10:170
139391360,0ptp4l401ktimersoftd/308:58:573
10413993614,21cyclictest25637-21kworker/3:210:23:243
1041399360,21cyclictest20769-21taskset10:55:043
10412993631,3cyclictest33-21ksoftirqd/208:45:102
10412993631,3cyclictest33-21ksoftirqd/208:25:122
10412993630,4cyclictest33-21ksoftirqd/209:41:302
10412993629,4cyclictest33-21ksoftirqd/207:18:132
10412993616,19cyclictest0-21swapper/212:25:232
1041299361,32cyclictest31435-21latency_hist12:25:002
1041299361,32cyclictest24298-21latency_hist12:10:012
1041199365,4cyclictest25-21ksoftirqd/107:40:241
1041199364,3cyclictest121rcu_preempt09:25:251
1041199363,2cyclictest121rcu_preempt08:40:141
10411993632,2cyclictest25-21ksoftirqd/112:25:001
10411993631,3cyclictest25-21ksoftirqd/110:25:241
10411993631,3cyclictest25-21ksoftirqd/108:45:131
10411993630,3cyclictest25-21ksoftirqd/109:45:001
10411993629,4cyclictest25-21ksoftirqd/111:05:201
1041199362,2cyclictest121rcu_preempt07:25:281
1041199361,5cyclictest25-21ksoftirqd/111:15:141
1041199361,5cyclictest25-21ksoftirqd/111:15:131
1041199361,11cyclictest25-21ksoftirqd/108:30:221
10410993632,2cyclictest9-21ksoftirqd/011:50:000
10410993632,2cyclictest9-21ksoftirqd/011:40:000
10410993631,3cyclictest9-21ksoftirqd/008:20:260
10410993629,4cyclictest9-21ksoftirqd/008:37:230
10413993529,4cyclictest41-21ksoftirqd/308:13:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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