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2026-08-22 - 08:57
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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 Sat Aug 22, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491232164,23phc2sys0-21swapper/319:08:263
139491232164,23phc2sys0-21swapper/319:08:263
242792207173,23sleep20-21swapper/219:05:052
242792207173,23sleep20-21swapper/219:05:042
262002204171,22sleep10-21swapper/119:07:121
262002204171,22sleep10-21swapper/119:07:121
263082202170,22sleep00-21swapper/019:08:360
263082202170,22sleep00-21swapper/019:08:350
2544121620,7sleep22671199cyclictest20:15:002
139391800,1ptp4l391rcuc/321:55:233
139391800,1ptp4l391rcuc/321:55:233
139391720,1ptp4l391rcuc/322:25:213
220892620,1sleep2311rcuc/221:15:142
86112610,4sleep08587-21cron19:40:010
86112610,4sleep08587-21cron19:40:000
2671299582,16cyclictest24304-21egrep21:20:133
149202570,5sleep014925-21cpuspeed_turbos21:00:110
2671299562,12cyclictest2759-21grep23:55:243
2671199560,2cyclictest30343-21/usr/sbin/munin19:15:232
173642560,1sleep20-21swapper/223:20:142
2671299552,16cyclictest8400-21sshd19:37:383
2671299552,16cyclictest8400-21sshd19:37:383
2671299551,16cyclictest32322-21irqstats21:35:193
89482520,7sleep02670999cyclictest19:40:120
75962510,2sleep10-21swapper/120:45:001
276272510,1sleep30-21swapper/321:25:183
2671299471,16cyclictest27882-21/usr/sbin/munin20:20:183
2671299471,15cyclictest9948-21ls19:40:213
2671199470,3cyclictest2844-21basename21:40:232
134391470,8getstats2671299cyclictest22:46:443
26712994610,5cyclictest41-21ksoftirqd/321:18:523
2671299442,11cyclictest2518-21gnome-shell23:00:243
26711994425,16cyclictest33-21ksoftirqd/222:15:122
2671299431,7cyclictest18978-21df_inode00:30:143
139391430,0ptp4l401ktimersoftd/320:48:403
139391430,0ptp4l401ktimersoftd/319:13:253
2671299421,11cyclictest10059-21df_abs23:05:153
2671299421,11cyclictest10059-21df_abs23:05:153
139391420,0ptp4l401ktimersoftd/321:47:133
139391410,0ptp4l401ktimersoftd/322:38:453
2671299401,8cyclictest642-21users23:50:273
2671299401,7cyclictest29392-21df19:15:153
2671199391,4cyclictest14493-21idleruntime-cro21:00:002
26710993934,3cyclictest1317-21runrttasks22:21:551
2671299382,17cyclictest25226-21grep22:30:123
26711993814,21cyclictest9190-21sh21:55:172
26711993814,21cyclictest9190-21sh21:55:172
26709993824,5cyclictest9-21ksoftirqd/019:19:580
1394913832,3phc2sys41-21ksoftirqd/300:00:243
2671299372,7cyclictest0-21swapper/322:25:013
2671199370,5cyclictest26972-21df_abs23:40:132
2671199370,4cyclictest5065-21latency_hist20:40:002
26710993731,4cyclictest25-21ksoftirqd/121:19:151
26709993731,4cyclictest9-21ksoftirqd/020:58:070
2671299367,4cyclictest41-21ksoftirqd/323:49:043
2671199363,20cyclictest31830-21sort19:20:112
26711993630,4cyclictest33-21ksoftirqd/220:44:452
2671199360,33cyclictest27350-21latency_hist22:35:002
26710993630,4cyclictest25-21ksoftirqd/122:57:511
26710993630,4cyclictest25-21ksoftirqd/122:27:101
26710993630,4cyclictest25-21ksoftirqd/119:53:541
26710993630,4cyclictest25-21ksoftirqd/100:21:071
26710993629,5cyclictest25-21ksoftirqd/123:05:451
26710993629,5cyclictest25-21ksoftirqd/123:05:451
26710993629,5cyclictest25-21ksoftirqd/121:37:271
26709993630,4cyclictest9-21ksoftirqd/021:05:100
26709993630,4cyclictest9-21ksoftirqd/019:25:560
26709993630,4cyclictest9-21ksoftirqd/000:17:090
26709993616,3cyclictest3058-21grep22:50:160
26712993530,3cyclictest41-21ksoftirqd/320:35:083
26712993529,4cyclictest41-21ksoftirqd/323:42:343
26712993529,4cyclictest41-21ksoftirqd/300:07:133
26711993530,3cyclictest33-21ksoftirqd/223:18:262
26711993530,3cyclictest33-21ksoftirqd/200:40:002
26711993529,4cyclictest33-21ksoftirqd/223:59:412
26711993528,5cyclictest33-21ksoftirqd/223:50:272
26711993513,20cyclictest5899-21idleruntime-cro00:05:002
2671199351,31cyclictest4709-21latency_hist22:55:002
2671199350,3cyclictest31272-21sed21:35:002
26710993530,3cyclictest25-21ksoftirqd/121:58:451
26710993530,3cyclictest25-21ksoftirqd/121:58:451
26710993530,3cyclictest25-21ksoftirqd/120:15:001
26710993529,4cyclictest25-21ksoftirqd/123:57:521
26710993529,4cyclictest25-21ksoftirqd/123:44:191
26710993529,4cyclictest25-21ksoftirqd/120:58:201
26710993529,4cyclictest25-21ksoftirqd/120:05:321
26710993529,4cyclictest25-21ksoftirqd/100:37:321
26710993529,4cyclictest25-21ksoftirqd/100:00:111
26709993529,4cyclictest9-21ksoftirqd/020:32:080
26709993529,4cyclictest9-21ksoftirqd/020:16:020
26709993528,4cyclictest9-21ksoftirqd/023:00:100
26709993518,8cyclictest9-21ksoftirqd/021:31:120
26712993429,3cyclictest41-21ksoftirqd/320:05:123
26712993428,4cyclictest41-21ksoftirqd/300:29:203
26712993427,4cyclictest41-21ksoftirqd/322:10:313
2671199349,21cyclictest15571-21wc22:10:012
2671199343,28cyclictest25700-21wc20:15:152
26711993429,3cyclictest33-21ksoftirqd/221:06:582
26711993429,3cyclictest33-21ksoftirqd/219:38:592
26711993429,3cyclictest33-21ksoftirqd/219:38:582
26711993428,4cyclictest33-21ksoftirqd/222:38:582
26711993428,4cyclictest33-21ksoftirqd/221:26:412
26711993428,4cyclictest33-21ksoftirqd/221:03:072
26711993428,4cyclictest33-21ksoftirqd/220:08:152
26711993428,4cyclictest33-21ksoftirqd/200:08:452
26711993427,4cyclictest33-21ksoftirqd/221:54:252
26711993411,20cyclictest8932-21cat19:40:122
2671199340,3cyclictest24946-21taskset22:29:452
2671199340,3cyclictest12049-21cat23:10:012
2671199340,3cyclictest0-21swapper/220:00:252
26710993429,3cyclictest25-21ksoftirqd/122:16:311
26710993428,4cyclictest25-21ksoftirqd/123:02:401
26710993428,4cyclictest25-21ksoftirqd/122:46:361
26710993428,4cyclictest25-21ksoftirqd/119:37:561
26710993428,4cyclictest25-21ksoftirqd/119:37:561
26710993428,4cyclictest25-21ksoftirqd/119:26:091
26709993428,4cyclictest9-21ksoftirqd/022:03:380
26709993428,4cyclictest9-21ksoftirqd/021:49:420
26709993428,4cyclictest9-21ksoftirqd/020:28:260
26709993428,4cyclictest9-21ksoftirqd/020:05:400
26709993428,4cyclictest9-21ksoftirqd/020:03:040
26709993427,4cyclictest9-21ksoftirqd/019:30:100
26709993427,4cyclictest9-21ksoftirqd/000:22:220
2671299339,5cyclictest41-21ksoftirqd/321:10:273
2671299336,5cyclictest41-21ksoftirqd/320:59:223
2671299334,17cyclictest23537-21fschecks_count20:10:143
26712993327,4cyclictest41-21ksoftirqd/321:07:373
26712993327,4cyclictest41-21ksoftirqd/321:04:243
26712993327,4cyclictest41-21ksoftirqd/320:44:223
26712993327,4cyclictest41-21ksoftirqd/320:26:413
26712993327,4cyclictest41-21ksoftirqd/320:04:543
26712993327,4cyclictest41-21ksoftirqd/300:38:423
2671199339,22cyclictest27392-21grep19:10:182
2671199339,21cyclictest14026-21sed00:20:142
26711993328,3cyclictest33-21ksoftirqd/223:36:532
26711993328,3cyclictest33-21ksoftirqd/223:03:402
26711993328,3cyclictest33-21ksoftirqd/219:51:162
26711993327,4cyclictest33-21ksoftirqd/223:28:092
26711993327,4cyclictest33-21ksoftirqd/219:56:312
26711993313,17cyclictest30742-21fschecks_time20:25:152
2671199331,29cyclictest8649-21meminfo20:45:182
26711993311,19cyclictest11341-21fschecks_count22:00:152
2671199330,3cyclictest13196-21chrt19:48:122
2671199330,2cyclictest25747-21sed21:20:242
2671199330,2cyclictest12881-21seq00:16:292
26710993328,3cyclictest25-21ksoftirqd/121:30:151
26710993327,4cyclictest25-21ksoftirqd/123:52:511
26710993327,4cyclictest25-21ksoftirqd/122:38:491
26710993327,4cyclictest25-21ksoftirqd/121:12:041
26710993327,4cyclictest25-21ksoftirqd/120:00:431
26710993327,3cyclictest25-21ksoftirqd/122:01:251
2671099331,3cyclictest121rcu_preempt19:19:591
26709993327,4cyclictest9-21ksoftirqd/023:59:310
26709993327,4cyclictest9-21ksoftirqd/023:36:450
26709993327,4cyclictest9-21ksoftirqd/022:10:480
26709993327,4cyclictest9-21ksoftirqd/021:17:000
26709993327,4cyclictest9-21ksoftirqd/020:14:180
26709993325,5cyclictest9-21ksoftirqd/023:16:240
26709993312,3cyclictest12300-21cat23:10:140
26712993227,3cyclictest41-21ksoftirqd/321:50:133
26712993227,3cyclictest41-21ksoftirqd/300:24:023
26712993226,4cyclictest41-21ksoftirqd/323:15:583
26712993226,4cyclictest41-21ksoftirqd/319:52:593
26712993226,4cyclictest41-21ksoftirqd/319:45:503
26712993226,3cyclictest41-21ksoftirqd/319:55:103
26712993225,5cyclictest41-21ksoftirqd/322:09:153
26712993225,4cyclictest41-21ksoftirqd/323:11:093
26711993227,3cyclictest33-21ksoftirqd/221:12:132
26711993227,3cyclictest33-21ksoftirqd/219:29:312
26711993226,4cyclictest33-21ksoftirqd/223:05:102
26711993226,4cyclictest33-21ksoftirqd/220:52:152
26711993225,5cyclictest33-21ksoftirqd/200:12:262
2671199321,3cyclictest21349-21irqstats22:20:192
2671199321,28cyclictest12064-21/usr/sbin/munin23:10:252
2671199321,26cyclictest15672-21apt-get22:10:122
26711993210,19cyclictest3801-21/usr/sbin/munin21:45:202
26711993210,19cyclictest17033-21expr00:25:182
2671199320,5cyclictest0-21swapper/222:40:132
2671199320,3cyclictest0-21swapper/220:35:012
2671199320,29cyclictest18565-21gdbus00:30:002
26710993227,3cyclictest25-21ksoftirqd/122:06:321
26710993227,3cyclictest25-21ksoftirqd/121:26:151
26710993227,3cyclictest25-21ksoftirqd/121:05:111
26710993227,3cyclictest25-21ksoftirqd/120:15:311
26710993227,3cyclictest25-21ksoftirqd/100:05:121
26710993226,4cyclictest25-21ksoftirqd/120:47:021
26710993225,5cyclictest25-21ksoftirqd/119:40:371
26709993226,4cyclictest9-21ksoftirqd/023:30:310
26709993226,4cyclictest9-21ksoftirqd/019:21:590
26709993224,5cyclictest9-21ksoftirqd/021:53:590
26709993212,4cyclictest22921-21cat22:25:120
2670999321,14cyclictest9761-21latency_hist20:50:000
139391320,1ptp4l391rcuc/300:17:033
26712993126,3cyclictest41-21ksoftirqd/319:29:153
26712993126,3cyclictest41-21ksoftirqd/319:20:413
26712993125,4cyclictest41-21ksoftirqd/323:34:113
26710993126,3cyclictest25-21ksoftirqd/119:23:451
26710993126,3cyclictest25-21ksoftirqd/119:10:111
26710993125,4cyclictest25-21ksoftirqd/123:32:171
26710993125,4cyclictest25-21ksoftirqd/122:44:271
26710993125,4cyclictest25-21ksoftirqd/120:33:161
26710993125,4cyclictest25-21ksoftirqd/100:30:111
26710993124,5cyclictest25-21ksoftirqd/119:47:361
26709993126,3cyclictest9-21ksoftirqd/023:20:070
26709993126,3cyclictest9-21ksoftirqd/000:09:550
26709993125,4cyclictest9-21ksoftirqd/022:46:550
26709993125,4cyclictest9-21ksoftirqd/022:42:370
26709993125,4cyclictest9-21ksoftirqd/020:42:360
26709993125,4cyclictest9-21ksoftirqd/020:22:360
26709993125,3cyclictest9-21ksoftirqd/022:20:100
26709993125,3cyclictest9-21ksoftirqd/022:00:000
26709993125,3cyclictest9-21ksoftirqd/022:00:000
26712993024,4cyclictest41-21ksoftirqd/323:36:113
2671299302,10cyclictest10131-21cat00:10:243
2671199309,19cyclictest30022-21latency_hist20:25:002
2671199303,22cyclictest4951-21apt-get22:55:102
2671199301,28cyclictest14301-21kworker/2:122:48:412
2671199300,3cyclictest4663-21if_enp1s019:30:172
2671199300,3cyclictest207-21systemd-journal21:40:002
2671199300,2cyclictest21783-21apt-get23:30:132
2671199300,2cyclictest0-21swapper/223:45:252
26710993025,3cyclictest6221-21cron19:35:001
26710993025,3cyclictest25-21ksoftirqd/123:35:371
26710993025,3cyclictest25-21ksoftirqd/121:44:561
26710993025,3cyclictest25-21ksoftirqd/121:04:261
26710993024,4cyclictest25-21ksoftirqd/123:16:241
26710993024,4cyclictest25-21ksoftirqd/122:33:401
26710993024,4cyclictest25-21ksoftirqd/122:11:251
26710993024,4cyclictest25-21ksoftirqd/121:49:191
26710993024,4cyclictest25-21ksoftirqd/100:25:571
26710993023,5cyclictest25-21ksoftirqd/123:28:351
26709993025,3cyclictest9-21ksoftirqd/023:41:510
26709993025,3cyclictest9-21ksoftirqd/020:40:000
26709993024,4cyclictest9-21ksoftirqd/023:51:050
26709993024,4cyclictest9-21ksoftirqd/023:45:280
26709993024,4cyclictest9-21ksoftirqd/022:39:320
26709993024,4cyclictest9-21ksoftirqd/022:07:470
26709993024,4cyclictest9-21ksoftirqd/021:26:070
26709993023,4cyclictest9-21ksoftirqd/023:07:250
26709993023,4cyclictest9-21ksoftirqd/023:07:250
26709993014,3cyclictest4149-21fschecks_count00:00:150
139391300,0ptp4l401ktimersoftd/320:34:443
26712992923,4cyclictest41-21ksoftirqd/320:51:403
26712992923,4cyclictest41-21ksoftirqd/320:18:353
26712992923,3cyclictest41-21ksoftirqd/322:52:263
26710992923,4cyclictest25-21ksoftirqd/122:54:501
26710992923,4cyclictest25-21ksoftirqd/120:26:391
26710992922,5cyclictest25-21ksoftirqd/100:13:521
26709992927,1cyclictest0-21swapper/019:10:010
26709992924,3cyclictest9-21ksoftirqd/022:55:450
26709992924,3cyclictest9-21ksoftirqd/021:22:460
26709992923,4cyclictest9-21ksoftirqd/022:32:140
26709992923,4cyclictest9-21ksoftirqd/022:17:580
26709992923,4cyclictest9-21ksoftirqd/021:42:080
26709992923,4cyclictest9-21ksoftirqd/019:53:200
26712992823,3cyclictest41-21ksoftirqd/322:55:093
26712992822,4cyclictest41-21ksoftirqd/322:18:373
26710992823,3cyclictest25-21ksoftirqd/120:50:051
26709992823,3cyclictest9-21ksoftirqd/019:45:370
26709992822,3cyclictest9-21ksoftirqd/000:12:190
26709992819,3cyclictest19026-21grep00:30:140
139391280,0ptp4l401ktimersoftd/321:41:253
26712992722,3cyclictest41-21ksoftirqd/323:20:143
26712992722,3cyclictest41-21ksoftirqd/321:31:243
26710992722,3cyclictest25-21ksoftirqd/121:23:421
26709992722,3cyclictest9-21ksoftirqd/000:36:230
26709992721,3cyclictest9-21ksoftirqd/021:39:140
26712992621,3cyclictest41-21ksoftirqd/323:29:173
26712992621,3cyclictest41-21ksoftirqd/322:40:163
26710992621,3cyclictest25-21ksoftirqd/120:24:111
26710992619,4cyclictest25-21ksoftirqd/121:53:161
26709992621,3cyclictest9-21ksoftirqd/023:25:020
26709992621,3cyclictest9-21ksoftirqd/021:11:290
26709992621,3cyclictest9-21ksoftirqd/000:28:240
26712992520,3cyclictest41-21ksoftirqd/322:00:113
26712992519,3cyclictest41-21ksoftirqd/319:33:093
26710992520,3cyclictest25-21ksoftirqd/123:21:061
26710992520,3cyclictest25-21ksoftirqd/119:56:051
26710992519,4cyclictest25-21ksoftirqd/123:11:591
26710992519,3cyclictest25-21ksoftirqd/120:35:101
26709992519,3cyclictest9-21ksoftirqd/020:53:070
26710992317,4cyclictest25-21ksoftirqd/100:18:381
26709992216,4cyclictest9-21ksoftirqd/019:58:410
26710992116,3cyclictest25-21ksoftirqd/123:45:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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