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2026-08-11 - 13:38
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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 Tue Aug 11, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5032207174,22sleep10-21swapper/119:07:171
138591207173,23phc2sys0-21swapper/319:05:033
3912204171,22sleep00-21swapper/019:06:060
4992201169,21sleep20-21swapper/219:07:132
1141421760,4sleep2103299cyclictest19:30:162
1179221720,6sleep0103099cyclictest21:40:160
15622640,1sleep10-21swapper/122:25:141
138652600,3sleep113867-21df_abs19:35:121
103212600,1sleep20-21swapper/220:30:252
138491580,1ptp4l401ktimersoftd/323:46:273
244882560,1sleep00-21swapper/022:05:190
138491560,1ptp4l401ktimersoftd/323:15:423
214502550,4sleep2321ktimersoftd/219:50:132
74942510,2sleep20-21swapper/219:20:252
138491440,0ptp4l401ktimersoftd/321:34:583
138491440,0ptp4l401ktimersoftd/300:10:173
138491430,0ptp4l401ktimersoftd/322:40:333
1032994338,3cyclictest33-21ksoftirqd/200:40:002
50798400,8rtkit-daemon0-21swapper/020:48:580
50798390,6rtkit-daemon0-21swapper/123:44:291
50798390,6rtkit-daemon0-21swapper/021:27:560
138491390,0ptp4l401ktimersoftd/323:30:213
103299391,2cyclictest121rcu_preempt23:11:582
1031993934,3cyclictest31751-21fschecks_count22:20:151
1031993934,3cyclictest31751-21fschecks_count22:20:151
1033993832,4cyclictest41-21ksoftirqd/323:55:003
1033993831,5cyclictest41-21ksoftirqd/320:01:343
1033993831,5cyclictest41-21ksoftirqd/319:41:283
1033993830,5cyclictest41-21ksoftirqd/321:50:103
1033993830,5cyclictest41-21ksoftirqd/321:50:103
1032993833,3cyclictest33-21ksoftirqd/200:30:002
1031993832,4cyclictest25-21ksoftirqd/119:51:411
1031993831,5cyclictest25-21ksoftirqd/120:38:431
1030993832,4cyclictest9-21ksoftirqd/022:27:250
1030993831,4cyclictest9-21ksoftirqd/019:40:010
50798370,4rtkit-daemon0-21swapper/123:07:441
138491370,0ptp4l401ktimersoftd/320:55:193
1033993731,3cyclictest41-21ksoftirqd/320:05:203
1033993729,5cyclictest41-21ksoftirqd/321:40:583
1033993725,9cyclictest41-21ksoftirqd/323:05:163
1032993732,2cyclictest33-21ksoftirqd/222:30:182
1032993731,4cyclictest33-21ksoftirqd/222:08:462
1031993730,4cyclictest25-21ksoftirqd/122:35:011
1033993630,4cyclictest41-21ksoftirqd/323:22:043
1033993630,4cyclictest41-21ksoftirqd/323:13:383
1033993630,4cyclictest41-21ksoftirqd/322:32:103
1033993630,4cyclictest41-21ksoftirqd/322:19:423
1033993630,4cyclictest41-21ksoftirqd/321:46:483
1033993630,4cyclictest41-21ksoftirqd/319:29:043
1033993629,5cyclictest41-21ksoftirqd/323:58:473
1033993629,5cyclictest41-21ksoftirqd/322:29:053
1033993629,5cyclictest41-21ksoftirqd/321:11:153
1033993629,5cyclictest41-21ksoftirqd/320:33:153
1033993629,4cyclictest41-21ksoftirqd/319:20:123
1032993631,3cyclictest33-21ksoftirqd/223:15:132
1032993630,4cyclictest33-21ksoftirqd/223:36:482
1032993630,4cyclictest33-21ksoftirqd/221:38:462
1032993623,10cyclictest33-21ksoftirqd/222:40:122
1031993631,3cyclictest25-21ksoftirqd/122:55:001
1031993631,3cyclictest25-21ksoftirqd/122:19:591
1031993631,3cyclictest25-21ksoftirqd/119:55:201
1031993631,3cyclictest25-21ksoftirqd/119:45:001
1031993631,3cyclictest25-21ksoftirqd/100:07:471
1031993630,4cyclictest25-21ksoftirqd/122:05:111
1031993630,3cyclictest25-21ksoftirqd/123:20:001
1031993629,5cyclictest25-21ksoftirqd/123:33:571
1030993629,4cyclictest9-21ksoftirqd/019:41:490
138491350,0ptp4l401ktimersoftd/322:38:553
138491350,0ptp4l401ktimersoftd/321:05:263
1033993529,4cyclictest41-21ksoftirqd/321:56:523
1033993529,4cyclictest41-21ksoftirqd/300:09:023
1033993528,4cyclictest41-21ksoftirqd/300:23:543
1032993531,3cyclictest33-21ksoftirqd/200:16:322
1032993529,4cyclictest33-21ksoftirqd/223:31:392
1032993529,4cyclictest33-21ksoftirqd/222:21:462
1032993529,4cyclictest33-21ksoftirqd/222:21:452
1032993529,4cyclictest33-21ksoftirqd/221:30:072
1032993529,4cyclictest33-21ksoftirqd/220:43:202
1032993529,4cyclictest33-21ksoftirqd/200:24:212
1032993528,5cyclictest33-21ksoftirqd/220:15:572
1031993530,3cyclictest25-21ksoftirqd/123:25:011
1031993530,3cyclictest25-21ksoftirqd/122:40:001
1031993530,3cyclictest25-21ksoftirqd/120:32:111
1031993530,3cyclictest25-21ksoftirqd/120:05:111
1031993529,4cyclictest25-21ksoftirqd/123:51:511
1031993529,4cyclictest25-21ksoftirqd/121:15:181
1031993529,3cyclictest25-21ksoftirqd/119:30:001
1031993529,3cyclictest25-21ksoftirqd/100:25:411
1031993529,3cyclictest25-21ksoftirqd/100:00:151
1031993528,5cyclictest25-21ksoftirqd/119:48:481
1030993529,4cyclictest9-21ksoftirqd/023:47:410
1030993529,4cyclictest9-21ksoftirqd/023:42:000
1030993529,4cyclictest9-21ksoftirqd/022:24:090
1030993529,4cyclictest9-21ksoftirqd/022:24:090
1030993529,4cyclictest9-21ksoftirqd/019:56:250
1030993529,4cyclictest9-21ksoftirqd/000:22:190
1030993529,4cyclictest9-21ksoftirqd/000:09:080
317982340,5sleep031801-21if_enp1s020:10:180
138491340,0ptp4l401ktimersoftd/319:45:133
1033993428,4cyclictest41-21ksoftirqd/322:47:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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