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2026-06-23 - 13:56
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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 rackdslot4.osadl.org (updated Tue Jun 23, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591233166,22phc2sys0-21swapper/319:08:443
255462205170,23sleep10-21swapper/119:09:281
255552203170,22sleep00-21swapper/019:09:350
254082202170,21sleep20-21swapper/219:07:402
2604721650,6sleep12588299cyclictest20:15:101
497321380,4sleep22588399cyclictest21:40:242
2423921370,2sleep00-21swapper/000:30:190
1114321250,4sleep22588399cyclictest00:05:132
2588399641,30cyclictest5994-21/usr/sbin/munin21:45:072
190282590,2sleep10-21swapper/123:15:181
2588399580,26cyclictest22631-21grep21:10:272
135191580,1getstats0-21swapper/323:39:583
2588399527,21cyclictest27463-21gzip20:15:232
135191500,7getstats2588499cyclictest22:24:583
138491480,1ptp4l401ktimersoftd/322:52:333
138491470,1ptp4l401ktimersoftd/300:04:393
138491440,0ptp4l401ktimersoftd/321:46:443
138491430,0ptp4l401ktimersoftd/323:31:063
138491430,0ptp4l401ktimersoftd/321:00:473
2588399422,6cyclictest121rcu_preempt22:00:152
25882994236,3cyclictest21429-21irqrtprio23:20:181
2559024232,4sleep20-21swapper/219:10:012
135191420,1getstats0-21swapper/323:24:583
25884994035,3cyclictest41-21ksoftirqd/319:20:003
2588399400,2cyclictest0-21swapper/221:40:012
25881994026,12cyclictest9-21ksoftirqd/022:00:110
135191390,1getstats29453-1kworker/3:0H23:19:583
25883993833,3cyclictest33-21ksoftirqd/220:05:002
25882993832,4cyclictest25-21ksoftirqd/119:30:591
25884993733,3cyclictest41-21ksoftirqd/320:00:003
25884993730,5cyclictest41-21ksoftirqd/321:29:303
25881993731,4cyclictest9-21ksoftirqd/000:10:530
138491370,0ptp4l401ktimersoftd/320:10:273
135191370,1getstats29453-1kworker/3:0H23:29:583
135191370,1getstats20908-1kworker/3:1H20:44:583
135191370,1getstats20908-1kworker/3:1H20:34:573
25884993630,4cyclictest41-21ksoftirqd/320:35:023
25883993630,4cyclictest33-21ksoftirqd/223:38:312
25883993630,4cyclictest33-21ksoftirqd/223:18:092
25883993630,4cyclictest33-21ksoftirqd/220:43:432
25883993629,4cyclictest33-21ksoftirqd/219:38:522
2588399361,22cyclictest10517-21chrt00:04:532
25882993630,4cyclictest25-21ksoftirqd/123:01:421
25882993630,4cyclictest25-21ksoftirqd/122:45:541
25882993630,4cyclictest25-21ksoftirqd/122:45:541
25882993630,4cyclictest25-21ksoftirqd/121:46:331
25882993629,4cyclictest25-21ksoftirqd/120:00:001
25881993630,4cyclictest9-21ksoftirqd/023:57:100
25884993529,4cyclictest41-21ksoftirqd/323:43:323
25884993529,4cyclictest41-21ksoftirqd/323:06:413
25884993529,4cyclictest41-21ksoftirqd/322:04:033
25884993529,4cyclictest41-21ksoftirqd/320:04:333
25884993529,4cyclictest41-21ksoftirqd/319:34:363
25884993529,4cyclictest41-21ksoftirqd/300:36:093
25883993529,4cyclictest33-21ksoftirqd/223:03:442
25883993529,4cyclictest33-21ksoftirqd/220:11:182
25882993529,4cyclictest25-21ksoftirqd/122:28:401
25882993529,4cyclictest25-21ksoftirqd/120:38:211
25882993529,4cyclictest25-21ksoftirqd/120:14:101
25881993530,3cyclictest9-21ksoftirqd/023:10:110
25881993529,4cyclictest9-21ksoftirqd/021:56:550
25881993529,4cyclictest9-21ksoftirqd/021:19:480
25881993529,4cyclictest9-21ksoftirqd/020:19:500
25881993529,4cyclictest9-21ksoftirqd/019:49:180
25881993529,4cyclictest9-21ksoftirqd/019:24:340
25881993529,4cyclictest9-21ksoftirqd/000:23:060
50798340,1rtkit-daemon506-21rtkit-daemon20:55:301
25884993428,4cyclictest41-21ksoftirqd/300:12:133
25883993429,3cyclictest33-21ksoftirqd/223:56:242
25883993429,3cyclictest33-21ksoftirqd/221:33:482
25883993429,3cyclictest33-21ksoftirqd/221:33:482
25883993428,4cyclictest33-21ksoftirqd/222:26:052
25883993428,4cyclictest33-21ksoftirqd/221:52:062
25883993428,4cyclictest33-21ksoftirqd/220:26:472
25883993428,4cyclictest33-21ksoftirqd/219:41:012
25883993428,4cyclictest33-21ksoftirqd/219:34:432
25883993428,4cyclictest33-21ksoftirqd/200:33:422
2588399340,3cyclictest19884-21awk00:20:252
25882993429,3cyclictest25-21ksoftirqd/123:10:101
25882993429,3cyclictest25-21ksoftirqd/121:44:221
25882993429,3cyclictest25-21ksoftirqd/100:08:111
25882993428,4cyclictest25-21ksoftirqd/123:57:261
25882993428,4cyclictest25-21ksoftirqd/122:58:251
25882993428,4cyclictest25-21ksoftirqd/122:13:531
25882993428,4cyclictest25-21ksoftirqd/121:53:191
25882993428,4cyclictest25-21ksoftirqd/120:30:111
25882993428,4cyclictest25-21ksoftirqd/119:45:051
25882993428,4cyclictest25-21ksoftirqd/119:37:191
25882993428,4cyclictest25-21ksoftirqd/100:11:311
25881993429,3cyclictest9-21ksoftirqd/023:35:020
25881993428,4cyclictest9-21ksoftirqd/023:42:540
25881993428,4cyclictest9-21ksoftirqd/022:25:590
25881993428,4cyclictest9-21ksoftirqd/022:10:110
25881993428,4cyclictest9-21ksoftirqd/020:51:240
25881993428,4cyclictest9-21ksoftirqd/019:50:380
25881993428,4cyclictest9-21ksoftirqd/019:14:350
25884993328,3cyclictest41-21ksoftirqd/323:03:123
25884993328,3cyclictest41-21ksoftirqd/320:54:473
25884993328,3cyclictest41-21ksoftirqd/300:25:103
25884993327,4cyclictest41-21ksoftirqd/323:51:263
25884993327,4cyclictest41-21ksoftirqd/322:39:303
25884993327,4cyclictest41-21ksoftirqd/319:28:583
25884993327,4cyclictest41-21ksoftirqd/319:11:583
25884993327,4cyclictest41-21ksoftirqd/300:08:323
25884993327,3cyclictest41-21ksoftirqd/320:59:483
25883993328,3cyclictest33-21ksoftirqd/223:25:112
25883993328,3cyclictest33-21ksoftirqd/220:54:092
25883993328,3cyclictest33-21ksoftirqd/220:45:122
25883993328,3cyclictest33-21ksoftirqd/200:16:042
25883993327,4cyclictest33-21ksoftirqd/223:43:402
25883993327,4cyclictest33-21ksoftirqd/222:38:212
25883993327,4cyclictest33-21ksoftirqd/222:15:092
25883993327,4cyclictest33-21ksoftirqd/219:59:142
25883993327,4cyclictest33-21ksoftirqd/219:29:022
25883993327,4cyclictest33-21ksoftirqd/200:26:522
25882993328,3cyclictest25-21ksoftirqd/123:30:461
25882993328,3cyclictest25-21ksoftirqd/122:05:531
25882993328,3cyclictest25-21ksoftirqd/119:53:441
25882993327,4cyclictest25-21ksoftirqd/123:47:231
25882993327,4cyclictest25-21ksoftirqd/123:26:571
25882993327,4cyclictest25-21ksoftirqd/120:25:291
25882993327,4cyclictest25-21ksoftirqd/119:42:001
25882993326,5cyclictest25-21ksoftirqd/122:23:041
25882993326,5cyclictest25-21ksoftirqd/100:36:021
25882993326,4cyclictest25-21ksoftirqd/123:44:181
25881993329,3cyclictest9-21ksoftirqd/020:00:030
25881993328,3cyclictest9-21ksoftirqd/021:23:590
25881993327,4cyclictest9-21ksoftirqd/022:52:150
25881993327,4cyclictest9-21ksoftirqd/020:14:130
25881993327,4cyclictest9-21ksoftirqd/019:42:360
25881993327,4cyclictest9-21ksoftirqd/000:18:400
25881993327,4cyclictest9-21ksoftirqd/000:03:100
25881993312,19cyclictest4828-21phc2sys21:40:230
25881993312,19cyclictest21439-21expr20:05:130
176772330,2sleep10-21swapper/100:15:271
25884993227,3cyclictest41-21ksoftirqd/321:24:543
25884993227,3cyclictest41-21ksoftirqd/319:20:103
25884993227,3cyclictest41-21ksoftirqd/300:20:113
25884993226,4cyclictest41-21ksoftirqd/320:29:363
25884993226,4cyclictest41-21ksoftirqd/319:41:023
25883993227,3cyclictest33-21ksoftirqd/222:21:142
25883993227,3cyclictest33-21ksoftirqd/220:31:252
25883993227,3cyclictest33-21ksoftirqd/219:15:322
25883993226,4cyclictest33-21ksoftirqd/222:06:322
25883993226,4cyclictest33-21ksoftirqd/221:56:212
25883993226,4cyclictest33-21ksoftirqd/221:24:472
25883993226,4cyclictest33-21ksoftirqd/220:38:452
25883993226,4cyclictest33-21ksoftirqd/220:23:462
25883993226,4cyclictest33-21ksoftirqd/219:52:572
25883993213,16cyclictest14558-21sed00:10:202
25882993226,4cyclictest25-21ksoftirqd/120:46:071
25882993226,4cyclictest25-21ksoftirqd/119:10:351
25882993225,5cyclictest25-21ksoftirqd/121:14:231
25881993227,3cyclictest9-21ksoftirqd/023:22:080
25881993227,3cyclictest9-21ksoftirqd/022:56:320
25881993227,3cyclictest9-21ksoftirqd/022:38:150
25881993227,3cyclictest9-21ksoftirqd/022:07:320
25881993227,3cyclictest9-21ksoftirqd/019:30:180
25881993227,3cyclictest9-21ksoftirqd/019:26:010
25881993226,4cyclictest9-21ksoftirqd/022:46:530
25881993226,4cyclictest9-21ksoftirqd/022:46:530
25881993226,4cyclictest9-21ksoftirqd/020:21:110
25881993226,4cyclictest9-21ksoftirqd/000:35:040
25881993225,5cyclictest9-21ksoftirqd/000:26:230
25881993216,13cyclictest29985-21users22:30:280
25881993211,19cyclictest17821-21sed21:00:260
138491320,8ptp4l401ktimersoftd/322:10:283
138491320,0ptp4l401ktimersoftd/300:34:443
25884993127,2cyclictest41-21ksoftirqd/321:14:513
25884993126,3cyclictest41-21ksoftirqd/322:45:103
25884993126,3cyclictest41-21ksoftirqd/322:45:103
25884993126,3cyclictest41-21ksoftirqd/300:15:133
25884993125,4cyclictest41-21ksoftirqd/323:13:473
25884993125,4cyclictest41-21ksoftirqd/322:56:463
25884993125,4cyclictest41-21ksoftirqd/320:47:453
25884993125,4cyclictest41-21ksoftirqd/320:16:443
25883993125,4cyclictest33-21ksoftirqd/223:31:572
25883993125,4cyclictest33-21ksoftirqd/222:43:582
25883993125,4cyclictest33-21ksoftirqd/222:12:492
25883993125,4cyclictest33-21ksoftirqd/221:25:432
25883993125,4cyclictest33-21ksoftirqd/221:17:572
25883993125,4cyclictest33-21ksoftirqd/221:07:552
25883993125,3cyclictest33-21ksoftirqd/222:52:032
2588399310,3cyclictest27582-21/usr/sbin/munin00:35:282
25882993126,3cyclictest25-21ksoftirqd/122:41:081
25882993126,3cyclictest25-21ksoftirqd/121:20:111
25882993125,4cyclictest25-21ksoftirqd/121:59:001
25882993125,4cyclictest25-21ksoftirqd/121:16:311
25882993125,4cyclictest25-21ksoftirqd/121:08:501
25882993125,4cyclictest25-21ksoftirqd/120:22:031
25882993125,4cyclictest25-21ksoftirqd/120:00:421
25882993125,3cyclictest25-21ksoftirqd/122:01:591
25882993124,5cyclictest25-21ksoftirqd/122:30:291
25881993126,3cyclictest9-21ksoftirqd/023:31:350
25881993126,3cyclictest9-21ksoftirqd/021:35:330
25881993126,3cyclictest9-21ksoftirqd/020:42:490
25881993126,3cyclictest9-21ksoftirqd/020:37:040
25881993126,3cyclictest9-21ksoftirqd/019:38:160
25881993125,4cyclictest9-21ksoftirqd/023:05:470
25881993125,4cyclictest9-21ksoftirqd/021:26:450
25881993125,4cyclictest9-21ksoftirqd/020:48:310
25881993125,4cyclictest9-21ksoftirqd/019:16:440
25881993114,14cyclictest20173-21threads21:05:270
25881993110,19cyclictest16479-21expr19:55:130
138491310,0ptp4l401ktimersoftd/322:31:543
138491310,0ptp4l401ktimersoftd/320:21:113
138491310,0ptp4l401ktimersoftd/319:52:523
25884993025,3cyclictest41-21ksoftirqd/319:35:363
25884993024,4cyclictest41-21ksoftirqd/323:45:413
25884993024,4cyclictest41-21ksoftirqd/321:58:253
25884993024,4cyclictest41-21ksoftirqd/321:36:163
2588399308,19cyclictest1319-21snmpd23:05:142
2588399304,23cyclictest334-21grep19:20:252
25883993024,4cyclictest33-21ksoftirqd/223:46:332
25883993012,15cyclictest29039-21cut22:30:192
2588399300,3cyclictest3310-21cpuspeed_turbos23:50:132
25882993025,3cyclictest25-21ksoftirqd/119:15:311
25882993024,4cyclictest25-21ksoftirqd/100:20:091
25881993025,3cyclictest9-21ksoftirqd/022:21:120
25881993025,3cyclictest9-21ksoftirqd/022:19:370
25881993025,3cyclictest9-21ksoftirqd/000:05:390
25881993024,4cyclictest9-21ksoftirqd/023:26:130
25881993024,4cyclictest9-21ksoftirqd/021:52:170
25881993024,4cyclictest9-21ksoftirqd/021:14:510
25881993024,4cyclictest9-21ksoftirqd/020:57:130
25881993024,4cyclictest9-21ksoftirqd/020:32:060
138491300,0ptp4l401ktimersoftd/322:17:503
25884992924,3cyclictest41-21ksoftirqd/321:07:073
25884992924,3cyclictest41-21ksoftirqd/319:45:153
25884992923,4cyclictest41-21ksoftirqd/322:06:093
25883992924,3cyclictest33-21ksoftirqd/221:04:592
25883992924,3cyclictest33-21ksoftirqd/219:46:572
25883992923,4cyclictest33-21ksoftirqd/220:55:192
25883992922,4cyclictest33-21ksoftirqd/220:06:122
25883992912,15cyclictest5239-21awk22:45:262
25883992912,15cyclictest5239-21awk22:45:262
25882992924,3cyclictest25-21ksoftirqd/121:30:541
25882992924,3cyclictest25-21ksoftirqd/121:30:541
25882992924,3cyclictest25-21ksoftirqd/119:29:091
25882992924,3cyclictest25-21ksoftirqd/100:02:451
25882992923,4cyclictest25-21ksoftirqd/122:35:551
25882992923,4cyclictest25-21ksoftirqd/121:26:071
25882992923,4cyclictest25-21ksoftirqd/120:10:011
2588199297,3cyclictest4878-21cat23:50:260
25881992923,4cyclictest9-21ksoftirqd/023:46:310
2588199291,25cyclictest31450-21fschecks_time21:30:160
2588199291,25cyclictest31450-21fschecks_time21:30:150
138491290,0ptp4l401ktimersoftd/321:19:033
25884992823,3cyclictest41-21ksoftirqd/322:27:343
25884992823,3cyclictest41-21ksoftirqd/321:40:053
2588399280,2cyclictest0-21swapper/223:20:292
2588399280,1cyclictest0-21swapper/222:55:172
25882992823,3cyclictest25-21ksoftirqd/123:54:381
25882992823,3cyclictest25-21ksoftirqd/122:17:451
25882992823,3cyclictest25-21ksoftirqd/120:51:531
25882992823,3cyclictest25-21ksoftirqd/119:20:101
25882992821,4cyclictest25-21ksoftirqd/121:00:121
2588199289,17cyclictest8300-21sed21:50:000
2588199287,3cyclictest12840-21seq23:02:180
25884992722,3cyclictest41-21ksoftirqd/322:40:043
25884992722,3cyclictest41-21ksoftirqd/321:32:503
25884992722,3cyclictest41-21ksoftirqd/321:32:493
25884992721,4cyclictest41-21ksoftirqd/320:08:223
2588399272,22cyclictest16229-21diskstats23:10:152
25882992721,4cyclictest25-21ksoftirqd/120:40:461
25882992721,4cyclictest25-21ksoftirqd/100:25:261
2588199278,3cyclictest19328-21missed_timers23:15:210
2588199278,3cyclictest1453-21fschecks_time22:40:140
25882992620,4cyclictest25-21ksoftirqd/122:53:081
25884992519,4cyclictest41-21ksoftirqd/323:58:053
2588199255,3cyclictest31434-21/usr/sbin/munin20:25:150
25882992420,2cyclictest25-21ksoftirqd/123:35:181
138491240,0ptp4l401ktimersoftd/321:50:273
25882992318,3cyclictest25-21ksoftirqd/100:30:121
25882992116,3cyclictest13686-21df_abs23:05:141
25882991813,3cyclictest1044-21cpuspeed_turbos21:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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