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2026-03-18 - 16:42
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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 376 highest latencies:
System rackdslot4.osadl.org (updated Wed Mar 18, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
298662233165,23sleep30-21swapper/307:05:093
318612199165,23sleep10-21swapper/107:07:121
318032197163,22sleep00-21swapper/007:06:270
298652195162,22sleep20-21swapper/207:05:092
138591148124,13phc2sys0-21swapper/307:10:003
1762721180,3sleep33238099cyclictest07:45:123
64622750,2sleep10-21swapper/109:30:251
262882650,2sleep30-21swapper/310:10:273
5372630,2sleep00-21swapper/007:10:160
120962570,1sleep00-21swapper/011:55:100
321652560,2sleep00-21swapper/009:20:010
51982520,2sleep00-21swapper/008:25:140
138491500,1ptp4l401ktimersoftd/311:22:043
138491490,1ptp4l401ktimersoftd/308:18:513
138491470,0ptp4l401ktimersoftd/308:30:283
231692430,1sleep00-21swapper/010:05:180
138491430,0ptp4l401ktimersoftd/311:43:113
138491430,0ptp4l401ktimersoftd/307:41:523
32380994237,3cyclictest32492-21fschecks_count10:25:133
138491420,0ptp4l401ktimersoftd/309:25:513
138491420,0ptp4l401ktimersoftd/309:13:553
32379994136,3cyclictest33-21ksoftirqd/209:00:022
32379994135,3cyclictest33-21ksoftirqd/208:40:002
138491410,1ptp4l401ktimersoftd/312:05:063
32379994035,3cyclictest16993-21latency_hist08:50:002
138491390,0ptp4l401ktimersoftd/312:25:233
138491390,0ptp4l401ktimersoftd/309:34:563
138491390,0ptp4l401ktimersoftd/307:26:563
32378993833,3cyclictest28410-21uname08:05:181
32380993731,4cyclictest41-21ksoftirqd/312:03:043
32379993732,3cyclictest33-21ksoftirqd/207:55:002
32379993732,3cyclictest29218-21cron11:25:002
32379993731,4cyclictest33-21ksoftirqd/208:17:212
32379993731,4cyclictest33-21ksoftirqd/207:19:202
32378993730,4cyclictest25-21ksoftirqd/109:43:571
32377993730,5cyclictest9-21ksoftirqd/011:10:000
50798360,7rtkit-daemon0-21swapper/010:29:500
32380993632,2cyclictest41-21ksoftirqd/307:25:013
32380993631,3cyclictest41-21ksoftirqd/312:20:013
32380993631,3cyclictest41-21ksoftirqd/309:00:183
32380993630,4cyclictest41-21ksoftirqd/311:01:503
32380993630,4cyclictest41-21ksoftirqd/310:49:463
32380993630,4cyclictest41-21ksoftirqd/310:03:053
32380993630,4cyclictest41-21ksoftirqd/309:08:053
32380993630,4cyclictest41-21ksoftirqd/308:59:063
32380993630,4cyclictest41-21ksoftirqd/308:51:403
32380993630,4cyclictest41-21ksoftirqd/307:33:293
32379993630,4cyclictest33-21ksoftirqd/212:18:182
32379993630,4cyclictest33-21ksoftirqd/209:51:202
32379993630,4cyclictest33-21ksoftirqd/207:33:522
32378993630,4cyclictest25-21ksoftirqd/112:06:551
32378993630,4cyclictest25-21ksoftirqd/110:45:591
32377993630,4cyclictest9-21ksoftirqd/012:26:520
32377993630,4cyclictest9-21ksoftirqd/008:52:410
3237799362,9cyclictest17171-21apt-get09:55:100
32380993530,3cyclictest41-21ksoftirqd/308:45:003
32380993529,4cyclictest41-21ksoftirqd/310:24:193
32380993528,4cyclictest41-21ksoftirqd/310:44:573
32380993528,4cyclictest41-21ksoftirqd/310:15:153
32379993530,3cyclictest33-21ksoftirqd/210:37:392
32379993530,3cyclictest33-21ksoftirqd/209:34:272
32379993530,3cyclictest33-21ksoftirqd/209:03:042
32379993530,3cyclictest33-21ksoftirqd/207:15:012
32379993529,4cyclictest33-21ksoftirqd/210:26:262
32379993529,4cyclictest33-21ksoftirqd/210:06:122
32379993529,4cyclictest33-21ksoftirqd/209:58:342
32379993529,4cyclictest33-21ksoftirqd/207:37:572
3237899357,27cyclictest0-21swapper/109:52:031
32378993529,4cyclictest25-21ksoftirqd/112:35:581
32378993529,4cyclictest25-21ksoftirqd/112:16:501
32378993529,4cyclictest25-21ksoftirqd/111:59:081
32378993529,4cyclictest25-21ksoftirqd/110:55:581
32378993529,4cyclictest25-21ksoftirqd/108:48:051
32378993529,4cyclictest25-21ksoftirqd/108:15:431
32378993529,4cyclictest25-21ksoftirqd/107:19:031
32378993528,4cyclictest25-21ksoftirqd/109:40:001
32377993530,3cyclictest9-21ksoftirqd/012:31:340
32377993530,3cyclictest9-21ksoftirqd/011:43:360
32377993530,3cyclictest9-21ksoftirqd/008:56:260
32377993528,4cyclictest9-21ksoftirqd/011:18:550
32377993514,3cyclictest15050-21fschecks_count12:00:150
32377993513,3cyclictest32161-21cut08:15:000
3238099343,6cyclictest121rcu_preempt09:35:583
32380993429,3cyclictest7130-21sh08:30:003
32380993428,4cyclictest41-21ksoftirqd/309:47:483
32380993427,4cyclictest41-21ksoftirqd/307:20:003
32379993430,3cyclictest33-21ksoftirqd/211:10:132
32379993429,3cyclictest33-21ksoftirqd/211:49:102
32379993429,3cyclictest33-21ksoftirqd/211:30:192
32379993429,3cyclictest33-21ksoftirqd/211:16:322
32379993428,4cyclictest33-21ksoftirqd/212:23:202
32379993428,4cyclictest33-21ksoftirqd/211:43:332
32379993428,4cyclictest33-21ksoftirqd/210:53:382
32379993428,4cyclictest33-21ksoftirqd/210:42:422
32379993428,4cyclictest33-21ksoftirqd/210:30:522
32379993428,4cyclictest33-21ksoftirqd/209:17:182
3237899344,28cyclictest0-21swapper/110:08:331
32378993428,4cyclictest25-21ksoftirqd/110:51:411
32378993428,4cyclictest25-21ksoftirqd/110:16:101
32378993428,4cyclictest25-21ksoftirqd/108:43:361
32378993428,4cyclictest25-21ksoftirqd/108:28:231
32378993428,4cyclictest25-21ksoftirqd/107:42:341
32378993428,4cyclictest25-21ksoftirqd/107:33:111
32377993429,3cyclictest9-21ksoftirqd/011:22:320
32377993429,3cyclictest9-21ksoftirqd/009:09:340
32377993428,4cyclictest9-21ksoftirqd/012:37:150
32377993428,4cyclictest9-21ksoftirqd/012:12:300
32377993428,4cyclictest9-21ksoftirqd/011:54:180
32377993428,4cyclictest9-21ksoftirqd/011:33:080
32377993428,4cyclictest9-21ksoftirqd/009:39:190
32377993428,4cyclictest9-21ksoftirqd/007:49:280
32377993428,4cyclictest9-21ksoftirqd/007:32:180
138491340,0ptp4l401ktimersoftd/312:30:123
32380993328,3cyclictest41-21ksoftirqd/310:53:303
32380993328,3cyclictest41-21ksoftirqd/308:38:333
32380993327,4cyclictest41-21ksoftirqd/312:14:313
32380993327,4cyclictest41-21ksoftirqd/309:58:193
32380993327,4cyclictest41-21ksoftirqd/308:23:363
32379993328,3cyclictest33-21ksoftirqd/208:45:002
32379993328,3cyclictest33-21ksoftirqd/207:44:352
32379993327,4cyclictest33-21ksoftirqd/210:23:462
32379993327,4cyclictest33-21ksoftirqd/209:47:552
32379993327,4cyclictest33-21ksoftirqd/208:09:022
32378993328,3cyclictest25-21ksoftirqd/111:55:011
32378993328,3cyclictest25-21ksoftirqd/110:31:261
32378993327,4cyclictest25-21ksoftirqd/109:18:421
32378993327,4cyclictest25-21ksoftirqd/108:54:511
32378993326,5cyclictest25-21ksoftirqd/108:11:461
32378993326,4cyclictest25-21ksoftirqd/107:45:061
32377993328,3cyclictest9-21ksoftirqd/008:08:080
32377993327,4cyclictest9-21ksoftirqd/012:19:160
32377993327,4cyclictest9-21ksoftirqd/010:50:390
32377993327,4cyclictest9-21ksoftirqd/008:43:300
32377993327,4cyclictest9-21ksoftirqd/007:38:350
32377993326,5cyclictest9-21ksoftirqd/011:25:090
32377993326,4cyclictest9-21ksoftirqd/009:50:300
32380993227,3cyclictest41-21ksoftirqd/311:49:073
32380993227,3cyclictest41-21ksoftirqd/311:10:273
32380993227,3cyclictest41-21ksoftirqd/307:55:163
32379993228,3cyclictest33-21ksoftirqd/210:00:182
32379993227,3cyclictest33-21ksoftirqd/212:12:562
32379993227,3cyclictest33-21ksoftirqd/212:09:142
32379993227,3cyclictest33-21ksoftirqd/208:20:232
32379993226,4cyclictest33-21ksoftirqd/212:33:112
32379993226,4cyclictest33-21ksoftirqd/212:02:342
32379993226,4cyclictest33-21ksoftirqd/211:56:492
32379993226,4cyclictest33-21ksoftirqd/208:54:072
32379993226,4cyclictest33-21ksoftirqd/207:58:432
32379993226,4cyclictest33-21ksoftirqd/207:26:382
32379993226,3cyclictest33-21ksoftirqd/208:10:582
32379993225,5cyclictest33-21ksoftirqd/209:11:082
32379993225,4cyclictest33-21ksoftirqd/209:40:452
32379993222,9cyclictest33-21ksoftirqd/211:05:232
3237999320,30cyclictest3692-21/usr/sbin/munin09:25:232
32378993226,4cyclictest25-21ksoftirqd/112:01:331
32378993226,4cyclictest25-21ksoftirqd/111:25:011
32378993226,4cyclictest25-21ksoftirqd/110:21:041
32378993226,4cyclictest25-21ksoftirqd/110:10:331
32378993226,4cyclictest25-21ksoftirqd/109:27:161
32378993226,4cyclictest25-21ksoftirqd/109:10:071
32378993225,5cyclictest25-21ksoftirqd/109:22:141
32377993227,3cyclictest9-21ksoftirqd/011:48:400
32377993227,3cyclictest9-21ksoftirqd/009:19:330
32377993227,3cyclictest9-21ksoftirqd/008:34:200
32377993226,4cyclictest9-21ksoftirqd/011:36:530
32377993226,4cyclictest9-21ksoftirqd/009:33:530
32377993226,4cyclictest9-21ksoftirqd/009:01:240
32377993226,4cyclictest9-21ksoftirqd/008:38:330
32377993226,4cyclictest9-21ksoftirqd/008:23:410
138491320,0ptp4l401ktimersoftd/309:15:263
32380993126,3cyclictest41-21ksoftirqd/309:50:463
32380993126,3cyclictest41-21ksoftirqd/308:45:193
32380993126,3cyclictest41-21ksoftirqd/307:37:093
32380993125,4cyclictest41-21ksoftirqd/312:37:543
32380993125,4cyclictest41-21ksoftirqd/311:05:473
32379993127,3cyclictest33-21ksoftirqd/211:36:332
32379993127,3cyclictest33-21ksoftirqd/209:35:192
32379993127,2cyclictest33-21ksoftirqd/211:50:172
32379993126,3cyclictest33-21ksoftirqd/210:15:472
32379993125,4cyclictest33-21ksoftirqd/209:20:072
32379993125,4cyclictest33-21ksoftirqd/209:07:112
32379993125,4cyclictest33-21ksoftirqd/207:49:532
32378993126,3cyclictest25-21ksoftirqd/110:35:101
32378993126,3cyclictest25-21ksoftirqd/110:26:171
32378993125,4cyclictest25-21ksoftirqd/112:10:361
32378993125,4cyclictest25-21ksoftirqd/107:54:171
32378993125,4cyclictest25-21ksoftirqd/107:24:281
32378993125,4cyclictest25-21ksoftirqd/107:14:331
32378993124,5cyclictest25-21ksoftirqd/111:37:061
32377993125,4cyclictest9-21ksoftirqd/011:12:420
32377993125,4cyclictest9-21ksoftirqd/007:50:110
32377993124,4cyclictest9-21ksoftirqd/010:16:000
138491310,1ptp4l401ktimersoftd/310:55:193
32380993026,3cyclictest41-21ksoftirqd/311:51:553
32380993026,3cyclictest41-21ksoftirqd/311:25:183
32380993026,3cyclictest41-21ksoftirqd/307:50:183
32380993025,3cyclictest41-21ksoftirqd/309:23:203
32380993025,3cyclictest41-21ksoftirqd/308:05:143
32379993025,3cyclictest33-21ksoftirqd/211:28:302
32379993024,4cyclictest33-21ksoftirqd/208:31:332
32379993022,6cyclictest33-21ksoftirqd/208:02:532
32378993025,3cyclictest25-21ksoftirqd/111:00:171
32378993023,5cyclictest25-21ksoftirqd/107:58:181
32377993025,3cyclictest9-21ksoftirqd/010:56:390
32377993025,3cyclictest9-21ksoftirqd/010:13:170
32377993025,3cyclictest9-21ksoftirqd/008:45:030
32377993024,4cyclictest9-21ksoftirqd/012:24:030
32377993024,4cyclictest9-21ksoftirqd/010:22:150
32377993024,4cyclictest9-21ksoftirqd/009:48:530
138491300,11ptp4l0-21swapper/308:01:593
138491300,0ptp4l401ktimersoftd/311:30:023
138491300,0ptp4l401ktimersoftd/308:14:043
32379992923,4cyclictest33-21ksoftirqd/212:28:342
32379992923,4cyclictest33-21ksoftirqd/210:45:102
32378992924,4cyclictest25-21ksoftirqd/109:59:321
32378992924,3cyclictest25-21ksoftirqd/112:23:281
32378992923,4cyclictest25-21ksoftirqd/109:07:021
32378992923,3cyclictest25-21ksoftirqd/111:05:101
32378992923,3cyclictest25-21ksoftirqd/110:02:051
32377992924,3cyclictest9-21ksoftirqd/010:45:410
32377992923,4cyclictest9-21ksoftirqd/010:30:090
32377992923,4cyclictest9-21ksoftirqd/008:15:460
32380992823,3cyclictest41-21ksoftirqd/311:55:123
32380992823,3cyclictest41-21ksoftirqd/310:36:313
32380992822,4cyclictest41-21ksoftirqd/309:40:163
32379992823,3cyclictest33-21ksoftirqd/211:01:432
32379992823,3cyclictest33-21ksoftirqd/208:29:002
32379992822,4cyclictest33-21ksoftirqd/210:59:042
32378992823,3cyclictest25-21ksoftirqd/111:40:101
32378992823,3cyclictest25-21ksoftirqd/111:12:441
32378992822,4cyclictest25-21ksoftirqd/109:49:191
32377992823,3cyclictest9-21ksoftirqd/011:04:590
32380992722,3cyclictest41-21ksoftirqd/310:30:173
32379992723,3cyclictest33-21ksoftirqd/210:10:142
32379992716,9cyclictest33-21ksoftirqd/212:35:232
32378992722,3cyclictest25-21ksoftirqd/112:25:081
32378992721,4cyclictest25-21ksoftirqd/110:42:141
32377992722,3cyclictest9-21ksoftirqd/012:09:590
32377992721,4cyclictest9-21ksoftirqd/008:00:340
138491270,0ptp4l401ktimersoftd/311:38:353
32380992621,3cyclictest41-21ksoftirqd/312:20:203
32379992620,4cyclictest33-21ksoftirqd/207:23:452
32378992621,3cyclictest25-21ksoftirqd/108:33:451
32378992620,4cyclictest25-21ksoftirqd/111:15:561
32378992620,4cyclictest25-21ksoftirqd/108:04:321
32377992621,3cyclictest9-21ksoftirqd/010:01:250
32377992621,3cyclictest9-21ksoftirqd/009:25:300
32380992521,3cyclictest41-21ksoftirqd/311:20:013
32378992519,4cyclictest25-21ksoftirqd/108:38:021
32378992519,4cyclictest25-21ksoftirqd/108:21:451
32378992519,3cyclictest25-21ksoftirqd/111:29:251
32378992518,4cyclictest25-21ksoftirqd/107:35:281
32377992520,3cyclictest9-21ksoftirqd/010:39:200
32377992520,3cyclictest9-21ksoftirqd/009:12:390
138491250,0ptp4l401ktimersoftd/310:05:173
32378992417,4cyclictest25-21ksoftirqd/107:28:471
32377992419,3cyclictest9-21ksoftirqd/009:42:130
32377992419,3cyclictest9-21ksoftirqd/007:55:200
32377992419,3cyclictest9-21ksoftirqd/007:41:350
32377992318,3cyclictest9-21ksoftirqd/007:28:450
32378992215,4cyclictest25-21ksoftirqd/108:59:481
3237799228,4cyclictest9-21ksoftirqd/007:17:410
32377992217,3cyclictest9-21ksoftirqd/010:42:130
32378992116,3cyclictest25-21ksoftirqd/111:48:051
32378992014,4cyclictest25-21ksoftirqd/111:33:411
32378992014,4cyclictest25-21ksoftirqd/109:02:091
32377991812,4cyclictest5345-21cut07:20:120
32378991712,3cyclictest31263-21seq12:30:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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