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2026-08-21 - 13:59
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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 highest latencies:
System rackdslot3.osadl.org (updated Fri Aug 21, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
76222232168,21sleep10-21swapper/119:06:071
77202227164,51sleep30-21swapper/319:07:183
77912205171,23sleep20-21swapper/219:08:132
79092204171,22sleep00-21swapper/019:09:440
299121410,7sleep0822199cyclictest21:10:260
139391600,1ptp4l401ktimersoftd/323:00:183
310052580,1sleep00-21swapper/000:25:140
70462560,2sleep2311rcuc/223:35:182
139391540,1ptp4l391rcuc/321:55:493
139391540,1ptp4l391rcuc/320:46:173
307002530,3sleep20-21swapper/223:15:242
217062530,1sleep10-21swapper/120:45:111
139391520,1ptp4l391rcuc/320:37:513
41832500,2sleep20-21swapper/222:20:252
8224994641,3cyclictest30158-21latency_hist22:10:003
139391460,0ptp4l401ktimersoftd/322:10:133
139391460,0ptp4l401ktimersoftd/300:08:443
1394914533,5phc2sys0-21swapper/319:10:013
822399444,38cyclictest25386-21kworker/2:121:55:122
139391440,0ptp4l401ktimersoftd/321:40:113
139391440,0ptp4l401ktimersoftd/319:40:223
8223994329,11cyclictest33-21ksoftirqd/222:30:002
139391430,0ptp4l401ktimersoftd/300:25:203
822399420,2cyclictest121rcu_preempt20:20:012
822399420,2cyclictest121rcu_preempt20:20:012
822199421,38cyclictest13319-21cron21:35:000
822199421,38cyclictest13319-21cron21:34:590
139391420,0ptp4l401ktimersoftd/322:31:263
139391420,0ptp4l401ktimersoftd/320:33:033
8223994135,3cyclictest28560-21apt20:59:592
8223994126,13cyclictest33-21ksoftirqd/222:04:592
8223994113,26cyclictest25386-21kworker/2:120:50:232
8222994035,3cyclictest13475-21cron23:50:011
8222994033,4cyclictest25523-21irqrtprio19:45:181
8223993929,8cyclictest33-21ksoftirqd/200:25:232
8223993834,2cyclictest33-21ksoftirqd/221:45:012
8223993833,3cyclictest33-21ksoftirqd/222:55:002
8223993833,3cyclictest33-21ksoftirqd/219:45:002
8223993833,3cyclictest33-21ksoftirqd/200:00:012
8223993831,4cyclictest33-21ksoftirqd/222:10:122
8222993833,3cyclictest25-21ksoftirqd/121:00:001
8222993831,4cyclictest18207-21cron00:00:001
8223993732,3cyclictest33-21ksoftirqd/222:20:012
8223993732,3cyclictest33-21ksoftirqd/222:20:012
8223993732,3cyclictest33-21ksoftirqd/220:05:002
8223993731,3cyclictest33-21ksoftirqd/200:25:002
8222993731,3cyclictest25-21ksoftirqd/120:53:591
8222993730,5cyclictest25-21ksoftirqd/100:02:321
822399365,4cyclictest33-21ksoftirqd/221:05:182
8223993632,2cyclictest33-21ksoftirqd/220:30:002
8223993631,3cyclictest33-21ksoftirqd/222:55:122
8223993631,3cyclictest33-21ksoftirqd/220:10:002
8223993631,3cyclictest33-21ksoftirqd/219:20:172
822399361,5cyclictest33-21ksoftirqd/219:55:272
8222993630,4cyclictest25-21ksoftirqd/121:42:151
8222993630,4cyclictest25-21ksoftirqd/119:51:041
8222993630,4cyclictest25-21ksoftirqd/119:51:031
8222993629,4cyclictest25-21ksoftirqd/121:21:341
8222993629,4cyclictest25-21ksoftirqd/120:26:341
8222993629,4cyclictest25-21ksoftirqd/119:35:131
8221993631,3cyclictest9-21ksoftirqd/023:35:000
8221993631,3cyclictest9-21ksoftirqd/022:50:010
8221993631,3cyclictest9-21ksoftirqd/022:50:010
8221993631,3cyclictest9-21ksoftirqd/000:25:000
8224993529,4cyclictest41-21ksoftirqd/322:03:213
8224993529,4cyclictest41-21ksoftirqd/300:34:083
8224993512,3cyclictest24659-21egrep23:05:133
822399358,6cyclictest33-21ksoftirqd/200:15:002
822399355,3cyclictest33-21ksoftirqd/220:35:212
8223993531,3cyclictest33-21ksoftirqd/219:15:272
8223993531,3cyclictest33-21ksoftirqd/200:40:012
8223993531,2cyclictest33-21ksoftirqd/221:50:252
8223993531,2cyclictest33-21ksoftirqd/219:10:252
8223993530,3cyclictest33-21ksoftirqd/221:15:142
8223993530,3cyclictest33-21ksoftirqd/221:05:002
8223993530,3cyclictest33-21ksoftirqd/220:15:002
8223993530,2cyclictest33-21ksoftirqd/220:30:022
8223993529,4cyclictest33-21ksoftirqd/223:21:092
8223993529,3cyclictest33-21ksoftirqd/219:30:172
822399350,33cyclictest20409-21sshd21:49:392
8222993530,3cyclictest25-21ksoftirqd/122:48:151
8222993530,3cyclictest25-21ksoftirqd/122:48:151
8222993530,3cyclictest25-21ksoftirqd/100:10:121
8222993529,4cyclictest25-21ksoftirqd/122:05:111
8222993529,4cyclictest25-21ksoftirqd/121:25:401
8221993529,4cyclictest9-21ksoftirqd/023:04:020
8221993529,4cyclictest9-21ksoftirqd/022:31:570
8221993529,4cyclictest9-21ksoftirqd/022:10:440
8221993529,4cyclictest9-21ksoftirqd/020:08:030
8221993528,4cyclictest9-21ksoftirqd/020:14:020
8224993428,4cyclictest41-21ksoftirqd/323:56:493
8224993428,4cyclictest41-21ksoftirqd/321:37:123
8224993428,4cyclictest41-21ksoftirqd/321:32:563
8224993428,4cyclictest41-21ksoftirqd/321:32:563
8224993428,4cyclictest41-21ksoftirqd/321:07:123
8224993428,4cyclictest41-21ksoftirqd/320:19:023
8224993428,4cyclictest41-21ksoftirqd/320:19:013
8224993428,4cyclictest41-21ksoftirqd/300:14:473
8224993428,4cyclictest41-21ksoftirqd/300:02:393
8223993431,2cyclictest33-21ksoftirqd/222:35:192
8223993430,2cyclictest33-21ksoftirqd/220:20:142
8223993429,3cyclictest33-21ksoftirqd/221:35:162
8223993429,3cyclictest33-21ksoftirqd/221:30:202
8223993429,3cyclictest33-21ksoftirqd/221:30:192
8223993429,3cyclictest33-21ksoftirqd/200:00:142
8223993428,4cyclictest33-21ksoftirqd/223:40:472
8223993428,4cyclictest33-21ksoftirqd/200:17:382
8223993428,4cyclictest33-21ksoftirqd/200:17:382
8223993428,3cyclictest33-21ksoftirqd/219:50:132
8223993428,3cyclictest33-21ksoftirqd/219:50:132
8223993428,3cyclictest33-21ksoftirqd/219:39:592
8223993420,12cyclictest33-21ksoftirqd/223:00:272
8222993430,3cyclictest25-21ksoftirqd/100:25:001
8222993429,3cyclictest25-21ksoftirqd/119:10:111
8222993428,4cyclictest25-21ksoftirqd/122:30:011
8222993428,4cyclictest25-21ksoftirqd/100:31:011
8222993428,4cyclictest25-21ksoftirqd/100:05:371
8222993427,4cyclictest25-21ksoftirqd/123:22:061
8221993428,4cyclictest9-21ksoftirqd/023:15:340
8221993428,4cyclictest9-21ksoftirqd/021:02:550
8221993428,4cyclictest9-21ksoftirqd/020:46:150
8221993427,4cyclictest9-21ksoftirqd/019:53:040
8221993427,4cyclictest9-21ksoftirqd/019:53:040
8224993328,3cyclictest41-21ksoftirqd/320:26:243
8224993328,3cyclictest41-21ksoftirqd/319:15:333
8224993327,4cyclictest41-21ksoftirqd/322:46:243
8224993327,4cyclictest41-21ksoftirqd/322:46:243
8224993327,4cyclictest41-21ksoftirqd/321:47:363
8224993327,4cyclictest41-21ksoftirqd/320:58:303
8224993327,4cyclictest41-21ksoftirqd/320:44:573
8224993327,4cyclictest41-21ksoftirqd/319:56:443
8223993329,2cyclictest33-21ksoftirqd/223:50:142
8223993329,2cyclictest33-21ksoftirqd/221:25:202
8223993328,3cyclictest33-21ksoftirqd/223:45:402
8223993328,3cyclictest33-21ksoftirqd/220:45:012
8223993328,3cyclictest33-21ksoftirqd/219:25:542
8223993327,3cyclictest33-21ksoftirqd/223:05:132
8223993327,3cyclictest33-21ksoftirqd/222:40:212
8222993328,3cyclictest25-21ksoftirqd/122:00:201
8222993327,4cyclictest25-21ksoftirqd/123:37:501
8222993327,4cyclictest25-21ksoftirqd/120:15:501
8222993327,4cyclictest25-21ksoftirqd/120:15:501
8221993327,4cyclictest9-21ksoftirqd/023:44:260
8221993327,4cyclictest9-21ksoftirqd/023:08:280
8221993327,4cyclictest9-21ksoftirqd/022:53:350
8221993327,4cyclictest9-21ksoftirqd/022:40:040
8221993327,4cyclictest9-21ksoftirqd/022:19:460
8221993327,4cyclictest9-21ksoftirqd/022:19:460
8221993327,4cyclictest9-21ksoftirqd/022:05:530
8221993327,4cyclictest9-21ksoftirqd/021:20:410
8221993327,4cyclictest9-21ksoftirqd/000:17:240
8221993327,4cyclictest9-21ksoftirqd/000:17:240
8224993227,3cyclictest41-21ksoftirqd/321:10:413
8224993226,4cyclictest41-21ksoftirqd/323:46:553
8224993226,4cyclictest41-21ksoftirqd/323:33:473
8224993226,4cyclictest41-21ksoftirqd/322:41:313
8224993212,3cyclictest11638-21sed22:35:243
8223993228,2cyclictest33-21ksoftirqd/222:30:122
8223993228,2cyclictest33-21ksoftirqd/222:05:202
8223993228,2cyclictest33-21ksoftirqd/219:50:002
8223993227,3cyclictest33-21ksoftirqd/222:45:222
8223993227,3cyclictest33-21ksoftirqd/222:45:222
8223993227,3cyclictest33-21ksoftirqd/221:10:252
8223993226,4cyclictest33-21ksoftirqd/223:28:522
8222993227,3cyclictest25-21ksoftirqd/120:24:551
8222993226,4cyclictest25-21ksoftirqd/123:41:511
8222993226,4cyclictest25-21ksoftirqd/123:05:291
8222993226,4cyclictest25-21ksoftirqd/122:31:431
8222993226,4cyclictest25-21ksoftirqd/122:10:491
8222993226,4cyclictest25-21ksoftirqd/121:50:151
8222993225,4cyclictest25-21ksoftirqd/121:59:091
8221993227,3cyclictest9-21ksoftirqd/020:37:210
8221993227,3cyclictest9-21ksoftirqd/020:01:530
8221993226,4cyclictest9-21ksoftirqd/021:25:390
8221993226,4cyclictest9-21ksoftirqd/000:02:450
822499317,4cyclictest255562cat20:50:253
822499313,26cyclictest0-21swapper/321:26:433
8224993126,3cyclictest41-21ksoftirqd/322:50:153
8224993126,3cyclictest41-21ksoftirqd/319:26:313
8224993125,4cyclictest41-21ksoftirqd/323:53:523
8223993127,2cyclictest33-21ksoftirqd/223:10:132
8223993126,3cyclictest33-21ksoftirqd/200:30:372
8223993125,3cyclictest33-21ksoftirqd/200:05:162
8222993126,3cyclictest25-21ksoftirqd/119:22:421
8222993125,4cyclictest25-21ksoftirqd/120:10:061
8222993125,4cyclictest25-21ksoftirqd/100:35:301
8222993124,4cyclictest25-21ksoftirqd/120:41:191
8222993123,5cyclictest25-21ksoftirqd/121:39:071
8221993126,3cyclictest9-21ksoftirqd/023:58:580
8221993126,3cyclictest9-21ksoftirqd/020:15:540
8221993126,3cyclictest9-21ksoftirqd/020:15:540
8221993126,3cyclictest9-21ksoftirqd/000:31:580
8221993125,4cyclictest9-21ksoftirqd/019:41:480
8221993125,4cyclictest9-21ksoftirqd/019:26:000
139391310,8ptp4l401ktimersoftd/323:27:143
139391310,1ptp4l0-21swapper/321:23:133
139391310,0ptp4l401ktimersoftd/322:58:053
8224993025,3cyclictest41-21ksoftirqd/322:29:153
8224993024,4cyclictest41-21ksoftirqd/323:10:563
8224993024,4cyclictest41-21ksoftirqd/320:10:403
8223993025,3cyclictest33-21ksoftirqd/221:20:012
8223993024,3cyclictest33-21ksoftirqd/220:45:042
8222993025,3cyclictest25-21ksoftirqd/123:02:511
8222993025,3cyclictest25-21ksoftirqd/122:50:111
8222993025,3cyclictest25-21ksoftirqd/120:38:171
8222993024,4cyclictest25-21ksoftirqd/123:16:441
8222993024,4cyclictest25-21ksoftirqd/123:11:471
8222993024,4cyclictest25-21ksoftirqd/121:10:011
8222993024,4cyclictest25-21ksoftirqd/120:31:561
8222993024,4cyclictest25-21ksoftirqd/100:16:461
8222993024,4cyclictest25-21ksoftirqd/100:16:461
8221993025,3cyclictest9-21ksoftirqd/023:25:480
8221993025,3cyclictest9-21ksoftirqd/021:19:050
8221993025,3cyclictest9-21ksoftirqd/020:25:010
8221993025,3cyclictest10600-21fschecks_count22:35:140
8221993024,4cyclictest9-21ksoftirqd/023:46:110
8221993024,4cyclictest9-21ksoftirqd/022:24:120
8221993024,4cyclictest9-21ksoftirqd/021:38:180
8221993024,4cyclictest9-21ksoftirqd/021:08:220
8221993023,4cyclictest9-21ksoftirqd/021:48:490
139391300,0ptp4l401ktimersoftd/319:48:293
8224992924,3cyclictest41-21ksoftirqd/321:51:503
8224992924,3cyclictest41-21ksoftirqd/319:21:423
8224992924,3cyclictest41-21ksoftirqd/300:18:223
8224992924,3cyclictest41-21ksoftirqd/300:18:223
8224992923,4cyclictest41-21ksoftirqd/323:42:383
8224992923,4cyclictest41-21ksoftirqd/320:09:273
8224992923,4cyclictest41-21ksoftirqd/319:35:583
8222992924,3cyclictest25-21ksoftirqd/122:37:111
8222992924,3cyclictest25-21ksoftirqd/122:20:551
8222992924,3cyclictest25-21ksoftirqd/121:46:041
8222992924,3cyclictest25-21ksoftirqd/120:00:401
8222992924,3cyclictest25-21ksoftirqd/119:33:031
8222992923,4cyclictest25-21ksoftirqd/122:43:051
8222992923,4cyclictest25-21ksoftirqd/121:00:121
8222992923,4cyclictest25-21ksoftirqd/100:23:271
8221992924,3cyclictest9-21ksoftirqd/023:36:400
8221992924,3cyclictest9-21ksoftirqd/021:51:420
8221992924,3cyclictest9-21ksoftirqd/021:42:130
8221992924,3cyclictest9-21ksoftirqd/019:59:040
8221992924,3cyclictest9-21ksoftirqd/019:38:360
8221992923,4cyclictest9-21ksoftirqd/022:29:480
8221992923,4cyclictest9-21ksoftirqd/019:33:500
8221992923,4cyclictest9-21ksoftirqd/000:35:540
8221992922,4cyclictest9-21ksoftirqd/020:50:080
139391290,6ptp4l0-21swapper/300:20:173
139391290,0ptp4l401ktimersoftd/300:35:403
8224992824,3cyclictest41-21ksoftirqd/321:19:593
8224992823,3cyclictest41-21ksoftirqd/323:39:073
8224992823,3cyclictest41-21ksoftirqd/319:53:393
8224992823,3cyclictest41-21ksoftirqd/319:53:383
8223992823,3cyclictest33-21ksoftirqd/223:30:162
8221992824,2cyclictest9-21ksoftirqd/022:04:590
8221992823,3cyclictest9-21ksoftirqd/022:59:340
8221992823,3cyclictest9-21ksoftirqd/020:57:590
8221992823,3cyclictest9-21ksoftirqd/020:43:480
8221992823,3cyclictest9-21ksoftirqd/020:26:060
8224992722,3cyclictest41-21ksoftirqd/320:24:133
8224992721,4cyclictest41-21ksoftirqd/323:23:243
8222992722,3cyclictest25-21ksoftirqd/123:51:181
8222992720,5cyclictest25-21ksoftirqd/119:41:491
8221992721,4cyclictest9-21ksoftirqd/020:30:090
8221992721,4cyclictest9-21ksoftirqd/019:15:570
8221992721,4cyclictest9-21ksoftirqd/000:08:300
8224992621,3cyclictest41-21ksoftirqd/319:34:093
8221992621,3cyclictest9-21ksoftirqd/023:15:000
8221992621,3cyclictest9-21ksoftirqd/021:56:070
8221992621,3cyclictest9-21ksoftirqd/019:23:510
8221992621,3cyclictest9-21ksoftirqd/019:11:150
8224992520,3cyclictest41-21ksoftirqd/320:01:453
8222992520,3cyclictest25-21ksoftirqd/119:29:421
8222992519,4cyclictest25-21ksoftirqd/123:28:521
8222992519,4cyclictest25-21ksoftirqd/121:14:041
8221992520,3cyclictest9-21ksoftirqd/023:54:150
8221992520,3cyclictest9-21ksoftirqd/000:14:430
8221992518,4cyclictest9-21ksoftirqd/019:45:180
139391250,1ptp4l401ktimersoftd/321:00:123
8222992419,3cyclictest25-21ksoftirqd/122:16:491
8222992419,3cyclictest25-21ksoftirqd/122:16:491
8222992418,4cyclictest25-21ksoftirqd/119:58:581
1394912418,3phc2sys41-21ksoftirqd/322:15:233
1394912418,3phc2sys41-21ksoftirqd/322:15:233
8222992319,3cyclictest25-21ksoftirqd/121:15:181
8222992317,4cyclictest25-21ksoftirqd/122:58:151
139391230,0ptp4l401ktimersoftd/323:15:243
139391230,0ptp4l401ktimersoftd/322:20:133
8222992216,4cyclictest25-21ksoftirqd/123:32:091
8222992216,4cyclictest25-21ksoftirqd/120:06:571
8221992217,3cyclictest9-21ksoftirqd/023:20:170
8222992116,3cyclictest25-21ksoftirqd/121:31:051
8222992116,3cyclictest25-21ksoftirqd/121:31:051
8222992115,4cyclictest25-21ksoftirqd/119:17:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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