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2026-03-18 - 03:07
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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 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35312204169,23sleep30-21swapper/319:09:343
35352202170,21sleep20-21swapper/219:09:382
34442201166,23sleep00-21swapper/019:08:280
32232200167,22sleep10-21swapper/119:05:351
401799626,16cyclictest5221-21/usr/sbin/munin22:25:162
401799616,10cyclictest7364-21latency20:20:192
138491610,1ptp4l401ktimersoftd/319:50:113
401799595,16cyclictest5480-21missed_timers00:35:212
401799586,16cyclictest0-21swapper/223:35:212
401799575,9cyclictest7144-21fschecks_time19:15:152
401799575,15cyclictest32304-21grep21:10:182
401799554,17cyclictest0-21swapper/221:55:162
401799536,8cyclictest3443-21timerwakeupswit23:25:252
401799516,15cyclictest11451-21/usr/sbin/munin20:30:232
401799515,16cyclictest0-21swapper/221:25:522
401799495,17cyclictest7100-21cpuspeed22:30:132
401799494,7cyclictest20492-21ls22:55:202
401799485,17cyclictest2939-21cat21:15:162
401799485,10cyclictest0-21swapper/200:30:192
401799474,14cyclictest0-21swapper/219:41:392
4017994740,4cyclictest29210-21cron22:10:012
4017994710,11cyclictest11044-21vmstat23:40:272
401799465,9cyclictest11939-21/usr/sbin/munin22:40:172
401799465,7cyclictest24989-21/usr/sbin/munin23:05:182
401799465,10cyclictest15192-21awk20:35:232
4017994520,22cyclictest33-21ksoftirqd/200:20:002
401899441,40cyclictest31510-21cron00:25:003
401799445,7cyclictest30268-21meminfo23:15:212
401799444,8cyclictest384-21ls00:25:192
4015994437,5cyclictest18605-21cron20:45:000
401799436,7cyclictest29134-21df20:00:132
401699430,42cyclictest0-21swapper/119:55:341
401799426,7cyclictest32376-21diskstats22:15:132
138491420,0ptp4l401ktimersoftd/322:55:533
138491420,0ptp4l401ktimersoftd/322:10:223
401799415,15cyclictest21376-21/usr/sbin/munin19:45:232
401799415,14cyclictest23747-21/usr/sbin/munin20:55:242
138491410,0ptp4l401ktimersoftd/320:10:253
138491410,0ptp4l401ktimersoftd/319:12:163
138491410,0ptp4l401ktimersoftd/319:12:153
4018994035,3cyclictest11299-21cron19:25:013
138491400,0ptp4l401ktimersoftd/319:19:563
4017993935,2cyclictest0-21swapper/219:10:012
4017993935,2cyclictest0-21swapper/219:10:002
4017993931,6cyclictest33-21ksoftirqd/200:06:092
4016993932,5cyclictest25-21ksoftirqd/100:15:011
4018993826,10cyclictest41-21ksoftirqd/321:10:273
4015993831,4cyclictest9-21ksoftirqd/023:45:110
4018993731,3cyclictest41-21ksoftirqd/321:40:003
4016993731,4cyclictest25-21ksoftirqd/100:22:341
4018993630,4cyclictest41-21ksoftirqd/323:26:323
4018993630,4cyclictest41-21ksoftirqd/300:28:313
4018993618,15cyclictest11410-21cron23:45:013
4017993630,4cyclictest33-21ksoftirqd/222:02:232
4017993630,4cyclictest33-21ksoftirqd/221:51:562
4017993630,4cyclictest33-21ksoftirqd/221:33:152
4017993630,4cyclictest33-21ksoftirqd/200:15:382
4016993629,4cyclictest25-21ksoftirqd/123:16:081
4016993629,4cyclictest25-21ksoftirqd/100:25:101
4015993630,4cyclictest9-21ksoftirqd/000:25:270
4015993629,5cyclictest9-21ksoftirqd/020:36:400
138491360,0ptp4l401ktimersoftd/300:11:583
4018993530,3cyclictest41-21ksoftirqd/321:29:333
4018993529,4cyclictest41-21ksoftirqd/323:24:523
4018993529,4cyclictest41-21ksoftirqd/323:17:343
4018993529,4cyclictest41-21ksoftirqd/321:34:043
4018993529,4cyclictest41-21ksoftirqd/320:26:483
4018993529,4cyclictest41-21ksoftirqd/300:31:273
4018993529,3cyclictest41-21ksoftirqd/323:40:003
4018993528,4cyclictest41-21ksoftirqd/323:07:033
4016993529,4cyclictest25-21ksoftirqd/120:56:471
4016993529,4cyclictest25-21ksoftirqd/120:03:081
401699350,33cyclictest0-21swapper/121:05:531
4015993530,3cyclictest11475-21egrep20:30:120
4015993529,4cyclictest9-21ksoftirqd/022:35:070
4015993529,4cyclictest9-21ksoftirqd/021:24:220
4015993529,4cyclictest9-21ksoftirqd/021:24:220
4015993529,4cyclictest9-21ksoftirqd/020:59:360
4018993429,3cyclictest41-21ksoftirqd/323:47:593
4018993429,3cyclictest41-21ksoftirqd/319:26:343
4018993428,4cyclictest41-21ksoftirqd/323:54:213
4018993427,4cyclictest41-21ksoftirqd/321:44:123
401799347,17cyclictest32338-21/usr/sbin/munin20:05:202
401799347,12cyclictest5045-21awk20:15:222
4017993429,3cyclictest33-21ksoftirqd/223:55:002
4017993428,4cyclictest33-21ksoftirqd/219:30:352
4017993427,5cyclictest33-21ksoftirqd/220:10:312
4017993427,4cyclictest33-21ksoftirqd/219:29:592
4016993429,3cyclictest25-21ksoftirqd/123:59:001
4016993428,4cyclictest25-21ksoftirqd/123:10:541
4016993428,4cyclictest25-21ksoftirqd/121:54:531
4016993428,4cyclictest25-21ksoftirqd/121:26:151
4016993428,4cyclictest25-21ksoftirqd/119:17:591
4016993427,5cyclictest25-21ksoftirqd/123:28:591
4016993427,5cyclictest25-21ksoftirqd/120:37:381
4016993427,4cyclictest25-21ksoftirqd/119:33:401
4015993429,3cyclictest9-21ksoftirqd/022:50:090
4015993428,4cyclictest9-21ksoftirqd/022:06:100
4015993428,4cyclictest9-21ksoftirqd/021:07:010
4015993428,4cyclictest9-21ksoftirqd/020:21:530
4015993428,4cyclictest9-21ksoftirqd/020:17:350
4015993428,4cyclictest9-21ksoftirqd/019:14:010
4015993428,4cyclictest9-21ksoftirqd/019:14:010
4015993428,4cyclictest9-21ksoftirqd/000:24:010
4018993328,3cyclictest41-21ksoftirqd/323:34:083
4018993328,3cyclictest41-21ksoftirqd/323:01:183
4018993328,3cyclictest41-21ksoftirqd/321:00:043
4018993327,4cyclictest41-21ksoftirqd/323:58:143
4018993327,4cyclictest41-21ksoftirqd/322:23:543
4018993327,4cyclictest41-21ksoftirqd/321:07:443
4018993327,4cyclictest41-21ksoftirqd/320:47:423
4018993327,4cyclictest41-21ksoftirqd/320:19:103
4018993327,4cyclictest41-21ksoftirqd/319:32:203
4017993328,3cyclictest33-21ksoftirqd/223:04:092
4017993328,3cyclictest33-21ksoftirqd/222:50:092
4017993328,3cyclictest33-21ksoftirqd/222:37:322
4017993328,3cyclictest33-21ksoftirqd/221:46:002
4017993327,4cyclictest33-21ksoftirqd/222:13:262
4017993327,4cyclictest33-21ksoftirqd/221:20:272
4017993327,4cyclictest33-21ksoftirqd/221:20:272
4017993327,4cyclictest33-21ksoftirqd/220:52:482
4017993327,4cyclictest33-21ksoftirqd/220:48:372
4017993327,4cyclictest33-21ksoftirqd/220:42:122
4016993327,4cyclictest25-21ksoftirqd/123:46:241
4016993327,4cyclictest25-21ksoftirqd/123:21:331
4016993327,4cyclictest25-21ksoftirqd/122:42:581
4016993327,4cyclictest25-21ksoftirqd/122:32:561
4016993327,4cyclictest25-21ksoftirqd/122:29:341
4016993327,4cyclictest25-21ksoftirqd/122:22:121
4016993327,4cyclictest25-21ksoftirqd/121:42:521
4016993327,4cyclictest25-21ksoftirqd/121:37:431
4016993327,4cyclictest25-21ksoftirqd/120:52:541
4016993327,4cyclictest25-21ksoftirqd/119:24:531
4016993327,4cyclictest25-21ksoftirqd/100:16:211
4016993327,3cyclictest25-21ksoftirqd/120:44:151
4016993326,5cyclictest25-21ksoftirqd/120:26:421
4015993328,3cyclictest9-21ksoftirqd/021:49:410
4015993328,3cyclictest9-21ksoftirqd/021:38:140
4015993327,4cyclictest9-21ksoftirqd/022:44:450
4015993327,4cyclictest9-21ksoftirqd/022:21:310
4015993327,4cyclictest9-21ksoftirqd/022:11:370
4015993327,4cyclictest9-21ksoftirqd/021:50:090
4015993327,4cyclictest9-21ksoftirqd/021:41:310
4015993327,4cyclictest9-21ksoftirqd/021:33:090
4015993327,4cyclictest9-21ksoftirqd/021:18:480
4015993327,4cyclictest9-21ksoftirqd/000:31:490
4015993327,4cyclictest9-21ksoftirqd/000:17:320
4015993327,3cyclictest9-21ksoftirqd/023:00:130
4015993327,3cyclictest9-21ksoftirqd/000:35:590
4018993226,4cyclictest41-21ksoftirqd/321:47:333
4018993226,4cyclictest41-21ksoftirqd/319:40:393
4018993226,3cyclictest41-21ksoftirqd/321:51:503
401799325,14cyclictest26452-21apt-get21:00:132
4017993226,4cyclictest33-21ksoftirqd/221:36:522
4016993226,4cyclictest25-21ksoftirqd/123:06:371
4016993226,4cyclictest25-21ksoftirqd/122:01:461
4016993226,4cyclictest25-21ksoftirqd/121:15:091
4016993226,4cyclictest25-21ksoftirqd/120:32:001
4016993226,4cyclictest25-21ksoftirqd/120:18:401
4016993226,4cyclictest25-21ksoftirqd/100:02:131
4016993225,4cyclictest25-21ksoftirqd/120:23:011
4016993225,4cyclictest25-21ksoftirqd/119:37:321
4015993227,3cyclictest9-21ksoftirqd/023:56:330
4015993227,3cyclictest9-21ksoftirqd/019:55:360
4015993226,4cyclictest9-21ksoftirqd/019:35:310
4015993226,4cyclictest9-21ksoftirqd/000:06:330
4018993126,3cyclictest41-21ksoftirqd/322:26:243
4018993125,4cyclictest41-21ksoftirqd/320:55:283
4018993125,3cyclictest41-21ksoftirqd/320:40:173
4017993126,3cyclictest33-21ksoftirqd/222:47:122
4017993125,4cyclictest33-21ksoftirqd/219:39:062
4017993125,4cyclictest33-21ksoftirqd/200:03:142
4017993125,3cyclictest33-21ksoftirqd/223:20:052
4016993126,3cyclictest25-21ksoftirqd/123:30:311
4016993125,4cyclictest25-21ksoftirqd/123:50:541
4016993125,4cyclictest25-21ksoftirqd/122:52:001
4016993125,4cyclictest25-21ksoftirqd/121:57:461
4016993125,4cyclictest25-21ksoftirqd/121:21:221
4016993125,4cyclictest25-21ksoftirqd/121:21:221
4016993125,4cyclictest25-21ksoftirqd/120:45:401
4016993125,4cyclictest25-21ksoftirqd/100:34:341
4015993126,3cyclictest9-21ksoftirqd/020:25:330
4015993125,4cyclictest9-21ksoftirqd/023:39:290
4015993125,4cyclictest9-21ksoftirqd/022:03:530
138491310,1ptp4l391rcuc/322:36:453
4018993026,3cyclictest41-21ksoftirqd/323:10:343
4018993025,3cyclictest41-21ksoftirqd/322:10:003
4018993025,3cyclictest41-21ksoftirqd/320:06:323
4018993024,4cyclictest41-21ksoftirqd/321:19:233
4018993024,4cyclictest41-21ksoftirqd/319:36:093
4018993024,4cyclictest41-21ksoftirqd/300:18:563
4017993025,3cyclictest33-21ksoftirqd/223:48:542
4017993024,4cyclictest33-21ksoftirqd/221:42:292
4017993024,4cyclictest33-21ksoftirqd/220:28:482
4016993025,3cyclictest25-21ksoftirqd/122:58:081
4016993025,3cyclictest25-21ksoftirqd/122:49:141
4016993025,3cyclictest25-21ksoftirqd/119:52:081
4016993024,4cyclictest25-21ksoftirqd/123:44:361
4016993024,4cyclictest25-21ksoftirqd/123:04:281
4016993024,4cyclictest25-21ksoftirqd/121:47:431
4016993024,4cyclictest25-21ksoftirqd/121:32:091
4016993024,4cyclictest25-21ksoftirqd/121:13:011
4016993024,4cyclictest25-21ksoftirqd/120:05:401
4016993024,4cyclictest25-21ksoftirqd/119:41:411
4016993024,4cyclictest25-21ksoftirqd/100:06:061
4015993025,3cyclictest9-21ksoftirqd/023:53:250
4015993025,3cyclictest9-21ksoftirqd/023:24:550
4015993025,3cyclictest9-21ksoftirqd/019:34:340
4015993025,3cyclictest9-21ksoftirqd/019:20:300
4015993025,3cyclictest9-21ksoftirqd/019:18:170
4015993024,4cyclictest9-21ksoftirqd/023:42:060
4015993024,4cyclictest9-21ksoftirqd/022:15:410
4015993024,4cyclictest9-21ksoftirqd/021:12:420
4015993024,4cyclictest9-21ksoftirqd/019:54:520
4015993024,3cyclictest9-21ksoftirqd/020:04:270
138491300,8ptp4l401ktimersoftd/322:41:133
138491300,0ptp4l401ktimersoftd/319:47:533
4018992924,3cyclictest41-21ksoftirqd/322:18:213
4018992923,4cyclictest41-21ksoftirqd/319:57:123
4018992923,4cyclictest41-21ksoftirqd/300:00:413
4017992924,3cyclictest33-21ksoftirqd/223:56:252
4017992924,3cyclictest33-21ksoftirqd/219:23:402
4016992924,3cyclictest25-21ksoftirqd/122:39:291
4016992924,3cyclictest25-21ksoftirqd/122:20:001
4016992923,4cyclictest25-21ksoftirqd/123:37:301
4015992924,3cyclictest9-21ksoftirqd/023:17:220
4015992924,3cyclictest9-21ksoftirqd/022:45:510
4015992924,3cyclictest9-21ksoftirqd/021:58:240
4015992923,4cyclictest9-21ksoftirqd/023:09:120
4015992923,4cyclictest9-21ksoftirqd/022:55:360
4015992923,4cyclictest9-21ksoftirqd/022:29:330
4015992923,4cyclictest9-21ksoftirqd/019:41:210
4015992923,4cyclictest9-21ksoftirqd/019:25:590
138491290,0ptp4l401ktimersoftd/322:30:173
138491290,0ptp4l401ktimersoftd/320:30:573
138491290,0ptp4l401ktimersoftd/300:38:343
4018992824,2cyclictest41-21ksoftirqd/320:37:393
4018992823,3cyclictest41-21ksoftirqd/320:03:513
4017992823,3cyclictest33-21ksoftirqd/219:54:262
4017992822,4cyclictest33-21ksoftirqd/221:08:072
4016992822,4cyclictest25-21ksoftirqd/121:04:251
4016992822,4cyclictest25-21ksoftirqd/100:39:401
4015992822,4cyclictest9-21ksoftirqd/019:47:510
4015992822,4cyclictest9-21ksoftirqd/000:01:080
4018992722,3cyclictest41-21ksoftirqd/300:07:213
4018992721,4cyclictest41-21ksoftirqd/322:01:523
4018992721,4cyclictest41-21ksoftirqd/321:58:273
4017992722,3cyclictest33-21ksoftirqd/200:14:022
4017992721,3cyclictest33-21ksoftirqd/223:34:362
4016992722,3cyclictest25-21ksoftirqd/120:11:141
4016992721,4cyclictest25-21ksoftirqd/122:08:281
4015992721,4cyclictest9-21ksoftirqd/023:34:160
4015992721,4cyclictest9-21ksoftirqd/021:25:060
4018992621,3cyclictest41-21ksoftirqd/322:45:243
4018992620,4cyclictest41-21ksoftirqd/320:20:063
4017992621,3cyclictest33-21ksoftirqd/222:20:462
4017992621,3cyclictest33-21ksoftirqd/219:55:102
401699260,24cyclictest0-21swapper/119:49:031
4015992620,4cyclictest9-21ksoftirqd/023:28:180
4015992620,4cyclictest9-21ksoftirqd/020:48:270
4017992519,4cyclictest33-21ksoftirqd/223:14:242
4015992520,3cyclictest9-21ksoftirqd/000:12:510
4015992519,4cyclictest9-21ksoftirqd/020:06:150
138491250,1ptp4l401ktimersoftd/321:20:173
138491250,1ptp4l401ktimersoftd/321:20:173
138491250,0ptp4l401ktimersoftd/320:50:113
4016992419,3cyclictest25-21ksoftirqd/119:12:121
4016992419,3cyclictest25-21ksoftirqd/119:12:121
4015992421,2cyclictest9-21ksoftirqd/020:10:180
4015992419,3cyclictest9-21ksoftirqd/022:33:410
4015992418,4cyclictest9-21ksoftirqd/021:00:040
4015992418,3cyclictest9-21ksoftirqd/020:54:360
138491240,0ptp4l401ktimersoftd/322:50:093
4016992318,3cyclictest25-21ksoftirqd/119:26:371
4015992116,3cyclictest9-21ksoftirqd/023:10:090
4016991711,4cyclictest29920-21diskstats22:10:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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