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2026-04-09 - 19:53
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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 rack6slot0.osadl.org (updated Thu Apr 09, 2026 13:03:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
226399213208,3cyclictest7645-21systemd-cgroups09:20:156
226399213208,3cyclictest7645-21systemd-cgroups09:20:156
225999206200,3cyclictest0-21swapper/1110:45:153
225999206200,3cyclictest0-21swapper/1110:45:153
224899205184,16cyclictest0-21swapper/109:35:201
224899205184,16cyclictest0-21swapper/109:35:201
224899205184,16cyclictest0-21swapper/109:35:201
227099203190,12cyclictest0-21swapper/1911:32:0211
227099203190,12cyclictest0-21swapper/1911:32:0211
227499199179,17cyclictest0-21swapper/2309:59:4916
227499199179,17cyclictest0-21swapper/2309:59:4816
227499199179,17cyclictest0-21swapper/2309:59:4816
226699198136,50cyclictest0-21swapper/1609:25:288
226699198136,50cyclictest0-21swapper/1609:25:288
224899195175,12cyclictest0-21swapper/110:58:311
224899195175,12cyclictest0-21swapper/110:58:311
228499191156,33cyclictest0-21swapper/3211:18:4726
228499191156,33cyclictest0-21swapper/3211:18:4726
226699190123,54cyclictest0-21swapper/1611:02:538
226699190123,54cyclictest0-21swapper/1611:02:538
226699190123,54cyclictest0-21swapper/1611:02:538
225499189179,8cyclictest0-21swapper/710:12:4537
225499189179,8cyclictest0-21swapper/710:12:4537
227399188181,5cyclictest0-21swapper/2210:20:2315
227399188181,5cyclictest0-21swapper/2210:20:2315
227399188181,5cyclictest0-21swapper/2210:20:2315
224999188174,11cyclictest8469-21kworker/u80:0-ext4-rsv-conversion12:37:0212
224999188174,11cyclictest8469-21kworker/u80:0-ext4-rsv-conversion12:37:0112
224999188174,11cyclictest8469-21kworker/u80:0-ext4-rsv-conversion12:37:0112
229099187183,2cyclictest0-21swapper/3610:49:1530
229099187183,2cyclictest0-21swapper/3610:49:1530
224899186179,5cyclictest0-21swapper/111:59:281
224899186179,5cyclictest0-21swapper/111:59:281
224899186179,5cyclictest0-21swapper/111:59:281
224899186177,5cyclictest0-21swapper/109:19:581
224899186177,5cyclictest0-21swapper/109:19:581
228099185181,2cyclictest0-21swapper/2809:20:1921
228099185181,2cyclictest0-21swapper/2809:20:1921
228599184171,9cyclictest0-21swapper/3312:28:0527
228599184171,9cyclictest0-21swapper/3312:28:0527
228599184171,9cyclictest0-21swapper/3312:28:0527
227099182174,6cyclictest0-21swapper/1911:50:0411
227099182174,6cyclictest0-21swapper/1911:50:0311
224899181169,9cyclictest0-21swapper/110:23:331
224899181169,9cyclictest0-21swapper/110:23:331
224899181169,9cyclictest0-21swapper/110:23:331
226899180172,6cyclictest0-21swapper/1712:20:069
226899180172,6cyclictest0-21swapper/1712:20:069
226899180172,6cyclictest0-21swapper/1712:20:069
226699180144,34cyclictest0-21swapper/1610:44:268
226699180144,34cyclictest0-21swapper/1610:44:258
225099180167,12cyclictest0-21swapper/312:21:1023
225099180167,12cyclictest0-21swapper/312:21:1023
225099180167,12cyclictest0-21swapper/312:21:1023
224899180164,7cyclictest0-21swapper/109:44:501
224899180164,7cyclictest0-21swapper/109:44:501
224899179148,28cyclictest0-21swapper/109:45:181
224899179148,28cyclictest0-21swapper/109:45:181
224899179148,28cyclictest0-21swapper/109:45:181
229199178141,15cyclictest0-21swapper/3710:03:0631
229199178141,15cyclictest0-21swapper/3710:03:0631
229199178141,15cyclictest0-21swapper/3710:03:0631
224899178169,6cyclictest0-21swapper/109:11:041
224899178169,6cyclictest0-21swapper/109:11:031
229199177160,8cyclictest0-21swapper/3711:13:3931
229199177160,8cyclictest0-21swapper/3711:13:3831
229199177160,8cyclictest0-21swapper/3711:13:3831
228499177149,25cyclictest0-21swapper/3209:35:2426
228499177149,25cyclictest0-21swapper/3209:35:2426
228499177149,25cyclictest0-21swapper/3209:35:2426
227399177108,28cyclictest0-21swapper/2209:57:3715
227399177108,28cyclictest0-21swapper/2209:57:3615
227399177108,28cyclictest0-21swapper/2209:57:3615
225099177168,8cyclictest0-21swapper/310:29:3723
225099177168,8cyclictest0-21swapper/310:29:3723
225099177168,8cyclictest0-21swapper/310:29:3723
225099177168,8cyclictest0-21swapper/310:29:3723
227199176167,8cyclictest0-21swapper/2008:31:2513
224899175149,20cyclictest2454-21CPU1
224899175149,20cyclictest2454-21CPU1
229299174167,4cyclictest0-21swapper/3811:11:5032
229299174167,4cyclictest0-21swapper/3811:11:5032
229299174167,4cyclictest0-21swapper/3811:11:5032
228499174134,33cyclictest0-21swapper/3211:23:1126
228499174134,33cyclictest0-21swapper/3211:23:1126
227399174164,9cyclictest0-21swapper/2212:11:4515
227399174164,9cyclictest0-21swapper/2212:11:4515
224899174167,4cyclictest22016-21kworker/u81:3-events_unbound12:38:021
224899174167,4cyclictest22016-21kworker/u81:3-events_unbound12:38:021
224899174167,4cyclictest22016-21kworker/u81:3-events_unbound12:38:021
229199173157,11cyclictest0-21swapper/3708:03:4831
229199173157,11cyclictest0-21swapper/3708:03:4831
228299173140,7cyclictest0-21swapper/3007:30:2624
228299173140,7cyclictest0-21swapper/3007:30:2624
2266991731,70cyclictest0-21swapper/1609:15:198
2266991731,70cyclictest0-21swapper/1609:15:198
225899173166,3cyclictest0-21swapper/1011:45:182
225899173166,3cyclictest0-21swapper/1011:45:182
224899173165,6cyclictest0-21swapper/109:54:111
224899173165,6cyclictest0-21swapper/109:54:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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