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2026-07-04 - 03:16
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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 rackdslot3.osadl.org (updated Fri Jul 03, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
189562232203,19sleep30-21swapper/307:08:593
186922205166,28sleep10-21swapper/107:05:311
188352204171,22sleep00-21swapper/007:07:230
188002203169,23sleep20-21swapper/207:06:572
1933799594,11cyclictest3290-21cut11:05:202
1933799584,11cyclictest19955-21sed11:40:192
1933799563,11cyclictest26666-21cut08:30:252
1933799563,11cyclictest26666-21cut08:30:252
1933799562,11cyclictest27201-21irqrtprio11:55:192
139391560,1ptp4l401ktimersoftd/309:34:483
1933799555,11cyclictest15127-21date10:20:272
34472540,4sleep13450-21missed_timers08:50:211
1933799542,11cyclictest5232-21timerwakeupswit07:45:292
1933799542,10cyclictest3768-21/usr/sbin/munin10:00:202
1933799532,11cyclictest6445-21fschecks_count07:50:172
1933799532,11cyclictest13253-21mailstats09:10:232
1933799532,10cyclictest2710-21switchtime07:40:242
1933799530,10cyclictest0-21swapper/212:20:232
1933799522,17cyclictest13340-21ps11:25:242
1933799520,14cyclictest0-21swapper/209:00:252
275982510,2sleep30-21swapper/309:40:223
275982510,2sleep30-21swapper/309:40:223
1933799513,17cyclictest26463-21latency_hist07:25:002
1933799512,11cyclictest31877-21awk10:55:312
1933799503,11cyclictest27748-21cat10:50:002
1933799502,16cyclictest32434-21grep08:45:132
134391500,6getstats1933899cyclictest07:50:053
268942490,2sleep30-21swapper/311:55:163
1933799492,11cyclictest23405-21df_abs10:40:172
1933799492,11cyclictest23405-21df_abs10:40:172
118172490,2sleep30-21swapper/311:25:003
1933799477,36cyclictest28930-21grep09:45:132
1933799472,8cyclictest11030-21grep09:05:272
1933799470,18cyclictest0-21swapper/208:55:222
19338994640,3cyclictest26276-21ls07:25:003
1933799461,7cyclictest2444-21ls09:55:202
1933799460,18cyclictest0-21swapper/209:35:252
1933799460,15cyclictest11038-21apt-get12:30:112
1933799451,8cyclictest11105-21apt-get10:15:142
19336994539,3cyclictest25-21ksoftirqd/111:39:591
1933799444,6cyclictest0-21swapper/210:05:152
1933799441,7cyclictest14701-21ls08:05:282
1933799441,7cyclictest1256-21apt-get12:10:122
1933799440,7cyclictest22897-21apt-get08:25:132
1933799440,7cyclictest22397-21ps07:15:192
1933799435,4cyclictest0-21swapper/207:25:162
1933799435,4cyclictest0-21swapper/207:25:162
1933799432,8cyclictest28941-21apt-get12:00:112
19337994237,3cyclictest18959-21cron11:40:002
1933799422,8cyclictest20187-21ls09:25:202
1933799422,16cyclictest21657-21/usr/sbin/munin09:30:242
139391420,0ptp4l401ktimersoftd/308:20:143
1933799411,7cyclictest1625-21ls11:00:242
1933799410,38cyclictest1308-21sshd09:19:282
1933699412,5cyclictest121rcu_preempt10:00:131
1933799408,5cyclictest33-21ksoftirqd/207:35:472
1933799401,7cyclictest3808-21apt-config12:15:012
1933799401,7cyclictest31510-21ls08:40:282
139391400,0ptp4l401ktimersoftd/312:00:123
139391400,0ptp4l401ktimersoftd/311:10:223
139391400,0ptp4l401ktimersoftd/310:05:123
139391400,0ptp4l401ktimersoftd/309:27:183
57898390,6rtkit-daemon0-21swapper/108:56:501
1933799398,5cyclictest33-21ksoftirqd/211:12:012
1933799396,4cyclictest33-21ksoftirqd/209:43:352
1933799396,4cyclictest33-21ksoftirqd/209:43:352
134491390,1getstats0-21swapper/308:02:163
57898380,3rtkit-daemon2526-21llvmpipe-310:52:591
19336993831,5cyclictest25-21ksoftirqd/108:30:321
19336993831,5cyclictest25-21ksoftirqd/108:30:321
19336993831,4cyclictest25-21ksoftirqd/110:20:191
19336993831,4cyclictest11797-21cron11:25:001
139391380,0ptp4l401ktimersoftd/311:05:173
57898370,2rtkit-daemon0-21swapper/110:57:441
57898370,2rtkit-daemon0-21swapper/108:25:191
19338993731,3cyclictest41-21ksoftirqd/307:20:003
19337993731,4cyclictest33-21ksoftirqd/210:14:392
19337993731,4cyclictest33-21ksoftirqd/210:14:392
1933799371,14cyclictest0-21swapper/210:36:062
19336993732,3cyclictest25-21ksoftirqd/111:05:131
19336993731,4cyclictest25-21ksoftirqd/111:04:001
19336993731,4cyclictest25-21ksoftirqd/109:06:131
19336993730,4cyclictest25-21ksoftirqd/109:20:121
1933699370,2cyclictest121rcu_preempt09:10:011
139391370,0ptp4l401ktimersoftd/310:35:183
57898360,2rtkit-daemon0-21swapper/012:08:240
57898360,2rtkit-daemon0-21swapper/010:34:100
19338993630,3cyclictest41-21ksoftirqd/310:50:013
19338993629,5cyclictest41-21ksoftirqd/308:06:223
1933799367,4cyclictest33-21ksoftirqd/211:46:562
1933799361,7cyclictest17156-21ps10:25:242
19336993631,3cyclictest25-21ksoftirqd/110:40:011
19336993630,4cyclictest25-21ksoftirqd/112:09:021
19336993630,4cyclictest25-21ksoftirqd/109:47:261
19336993630,4cyclictest25-21ksoftirqd/109:32:541
19336993630,4cyclictest25-21ksoftirqd/108:11:501
19336993630,4cyclictest25-21ksoftirqd/107:48:521
19336993630,3cyclictest25-21ksoftirqd/111:45:111
19336993630,3cyclictest25-21ksoftirqd/108:50:011
19336993629,4cyclictest25-21ksoftirqd/112:25:221
19336993629,4cyclictest25-21ksoftirqd/107:55:201
139391360,0ptp4l401ktimersoftd/310:20:143
139391360,0ptp4l401ktimersoftd/310:00:003
139391360,0ptp4l401ktimersoftd/308:30:133
139391360,0ptp4l401ktimersoftd/308:30:133
57898350,2rtkit-daemon19334-21cyclictest11:06:590
57898350,2rtkit-daemon0-21swapper/012:33:280
57898350,2rtkit-daemon0-21swapper/010:54:460
57898350,2rtkit-daemon0-21swapper/010:48:480
19338993529,4cyclictest41-21ksoftirqd/308:48:113
19338993528,4cyclictest41-21ksoftirqd/310:40:163
19338993528,4cyclictest41-21ksoftirqd/310:40:163
1933799358,4cyclictest33-21ksoftirqd/208:11:052
1933799356,4cyclictest33-21ksoftirqd/207:33:382
19336993529,4cyclictest25-21ksoftirqd/112:16:331
19336993529,4cyclictest25-21ksoftirqd/112:11:391
19336993529,4cyclictest25-21ksoftirqd/111:34:441
19336993529,4cyclictest25-21ksoftirqd/109:18:301
19336993529,3cyclictest25-21ksoftirqd/108:20:001
19335993529,4cyclictest9-21ksoftirqd/008:54:500
139391350,1ptp4l0-21swapper/310:27:253
57898340,2rtkit-daemon0-21swapper/109:35:181
57898340,1rtkit-daemon0-21swapper/111:56:221
19338993429,3cyclictest41-21ksoftirqd/312:05:243
19338993428,4cyclictest41-21ksoftirqd/310:16:523
19336993429,3cyclictest25-21ksoftirqd/110:16:581
19336993428,4cyclictest25-21ksoftirqd/112:20:421
19336993428,4cyclictest25-21ksoftirqd/108:43:151
19336993428,4cyclictest25-21ksoftirqd/107:29:061
19336993428,4cyclictest25-21ksoftirqd/107:29:061
19336993428,3cyclictest25-21ksoftirqd/108:20:101
19336993428,3cyclictest25-21ksoftirqd/107:14:591
19335993427,5cyclictest9-21ksoftirqd/011:41:590
19335993427,4cyclictest18835-21cron09:25:010
19338993328,3cyclictest41-21ksoftirqd/309:53:183
19338993328,3cyclictest41-21ksoftirqd/307:25:113
19338993328,3cyclictest41-21ksoftirqd/307:25:113
19338993327,4cyclictest41-21ksoftirqd/310:13:233
19338993327,4cyclictest41-21ksoftirqd/310:13:233
19338993327,4cyclictest41-21ksoftirqd/309:23:053
19337993327,4cyclictest33-21ksoftirqd/208:52:232
19336993328,3cyclictest25-21ksoftirqd/108:09:151
19336993327,4cyclictest25-21ksoftirqd/111:41:181
19336993327,4cyclictest25-21ksoftirqd/110:25:331
19336993327,4cyclictest25-21ksoftirqd/109:27:241
19336993327,4cyclictest25-21ksoftirqd/107:36:561
19336993327,4cyclictest25-21ksoftirqd/107:32:351
19335993327,4cyclictest9-21ksoftirqd/011:51:410
19335993327,4cyclictest9-21ksoftirqd/011:12:250
19335993327,4cyclictest9-21ksoftirqd/009:32:010
19335993327,4cyclictest9-21ksoftirqd/008:16:270
19335993327,4cyclictest9-21ksoftirqd/007:18:380
139391330,0ptp4l401ktimersoftd/311:18:403
139391330,0ptp4l401ktimersoftd/310:57:093
139391330,0ptp4l401ktimersoftd/307:10:243
19338993227,3cyclictest41-21ksoftirqd/311:27:413
19338993227,3cyclictest41-21ksoftirqd/308:37:533
19338993227,3cyclictest41-21ksoftirqd/307:32:063
19338993226,3cyclictest41-21ksoftirqd/312:21:493
1933799323,28cyclictest19942-21kworker/2:208:18:572
19337993228,3cyclictest33-21ksoftirqd/211:24:182
19337993227,3cyclictest33-21ksoftirqd/211:50:312
19337993226,4cyclictest33-21ksoftirqd/212:37:482
19337993226,4cyclictest33-21ksoftirqd/211:17:442
19337993226,4cyclictest33-21ksoftirqd/209:55:002
19336993228,2cyclictest25-21ksoftirqd/111:30:001
19336993227,3cyclictest25-21ksoftirqd/110:09:551
19336993226,4cyclictest25-21ksoftirqd/111:17:481
19336993226,4cyclictest25-21ksoftirqd/108:39:581
19336993226,3cyclictest25-21ksoftirqd/107:55:001
19335993227,3cyclictest9-21ksoftirqd/011:01:020
19335993227,3cyclictest9-21ksoftirqd/008:37:040
19335993227,3cyclictest8777-21grep07:55:170
19335993226,4cyclictest9-21ksoftirqd/011:49:320
19335993226,4cyclictest9-21ksoftirqd/011:39:420
19335993226,4cyclictest9-21ksoftirqd/010:28:490
19335993226,4cyclictest9-21ksoftirqd/010:21:510
19335993226,4cyclictest9-21ksoftirqd/009:57:320
19335993226,4cyclictest9-21ksoftirqd/008:10:370
139391320,0ptp4l401ktimersoftd/309:35:273
139391320,0ptp4l401ktimersoftd/309:17:453
139391320,0ptp4l401ktimersoftd/309:06:473
139391320,0ptp4l401ktimersoftd/307:35:233
57898310,2rtkit-daemon0-21swapper/010:15:390
19338993126,3cyclictest41-21ksoftirqd/312:29:263
19338993126,3cyclictest41-21ksoftirqd/311:34:303
19338993125,4cyclictest41-21ksoftirqd/308:14:133
1933799314,15cyclictest31364-21egrep12:05:152
19337993126,3cyclictest33-21ksoftirqd/208:24:312
19337993125,4cyclictest33-21ksoftirqd/210:30:432
1933799310,28cyclictest9280-21kworker/2:207:10:132
19336993127,2cyclictest25-21ksoftirqd/112:35:191
19336993125,4cyclictest25-21ksoftirqd/110:44:511
19336993125,4cyclictest25-21ksoftirqd/110:44:511
19336993125,4cyclictest25-21ksoftirqd/109:58:451
19336993125,3cyclictest25-21ksoftirqd/109:55:011
19335993126,3cyclictest9-21ksoftirqd/012:23:270
19335993126,3cyclictest9-21ksoftirqd/009:14:230
19335993126,3cyclictest9-21ksoftirqd/008:25:530
19335993126,3cyclictest9-21ksoftirqd/007:51:590
19335993125,4cyclictest9-21ksoftirqd/012:25:340
19335993125,4cyclictest9-21ksoftirqd/011:16:020
19335993125,4cyclictest9-21ksoftirqd/010:40:480
19335993125,4cyclictest9-21ksoftirqd/010:40:480
139391310,0ptp4l401ktimersoftd/309:45:393
139391310,0ptp4l401ktimersoftd/308:57:073
139391310,0ptp4l401ktimersoftd/308:41:543
139391310,0ptp4l401ktimersoftd/308:26:123
19338993025,3cyclictest4525-21cron08:55:013
19338993024,4cyclictest41-21ksoftirqd/308:18:343
19337993025,3cyclictest33-21ksoftirqd/211:31:192
19337993025,3cyclictest33-21ksoftirqd/210:54:542
19337993025,3cyclictest33-21ksoftirqd/208:00:112
19337993024,4cyclictest33-21ksoftirqd/209:22:322
19336993025,3cyclictest25-21ksoftirqd/110:30:211
19336993025,3cyclictest25-21ksoftirqd/107:23:431
19336993024,4cyclictest25-21ksoftirqd/107:17:101
19336993024,3cyclictest25-21ksoftirqd/110:10:111
19336993024,3cyclictest25-21ksoftirqd/110:10:111
19335993025,3cyclictest9-21ksoftirqd/012:19:330
19335993025,3cyclictest9-21ksoftirqd/012:01:000
19335993025,3cyclictest9-21ksoftirqd/010:12:040
19335993025,3cyclictest9-21ksoftirqd/010:12:040
19335993025,3cyclictest9-21ksoftirqd/009:36:020
19335993025,3cyclictest9-21ksoftirqd/009:18:260
19335993025,3cyclictest9-21ksoftirqd/008:41:370
19335993024,4cyclictest9-21ksoftirqd/012:13:360
19335993024,4cyclictest9-21ksoftirqd/011:29:310
19335993024,4cyclictest9-21ksoftirqd/010:00:570
19335993024,4cyclictest9-21ksoftirqd/009:49:530
19335993024,4cyclictest9-21ksoftirqd/007:49:220
19335993024,4cyclictest9-21ksoftirqd/007:37:150
19335993024,3cyclictest9-21ksoftirqd/007:31:090
139391300,0ptp4l401ktimersoftd/312:12:403
139391300,0ptp4l401ktimersoftd/311:40:133
139391300,0ptp4l401ktimersoftd/310:50:323
139391300,0ptp4l401ktimersoftd/307:58:133
139391300,0ptp4l401ktimersoftd/307:42:143
19338992924,3cyclictest41-21ksoftirqd/310:33:553
19338992923,4cyclictest41-21ksoftirqd/312:38:203
1933799296,22cyclictest30797-21kworker/2:007:58:172
1933799295,22cyclictest752-21kworker/2:112:25:132
19337992924,3cyclictest33-21ksoftirqd/208:36:502
19336992924,3cyclictest25-21ksoftirqd/111:11:081
19336992924,3cyclictest25-21ksoftirqd/109:41:351
19336992924,3cyclictest25-21ksoftirqd/109:41:351
19335992924,3cyclictest9-21ksoftirqd/009:51:170
19335992924,3cyclictest9-21ksoftirqd/009:09:580
19335992924,3cyclictest9-21ksoftirqd/007:29:330
19335992924,3cyclictest9-21ksoftirqd/007:29:330
19335992923,4cyclictest9-21ksoftirqd/011:31:520
19335992923,4cyclictest9-21ksoftirqd/008:48:240
19335992922,4cyclictest9-21ksoftirqd/007:40:120
19338992823,3cyclictest41-21ksoftirqd/309:01:273
19338992823,3cyclictest41-21ksoftirqd/307:48:413
19336992822,4cyclictest25-21ksoftirqd/109:03:121
19336992822,4cyclictest25-21ksoftirqd/107:44:141
19336992821,4cyclictest25-21ksoftirqd/108:00:111
19335992824,2cyclictest9-21ksoftirqd/012:35:220
19335992823,3cyclictest9-21ksoftirqd/010:58:410
19335992823,3cyclictest9-21ksoftirqd/009:43:000
19335992823,3cyclictest9-21ksoftirqd/009:42:590
19335992823,3cyclictest9-21ksoftirqd/007:11:360
19335992822,4cyclictest9-21ksoftirqd/011:55:460
19335992822,4cyclictest9-21ksoftirqd/010:08:190
1908822821,3sleep09-21ksoftirqd/009:25:120
139391280,0ptp4l401ktimersoftd/311:46:093
19338992722,3cyclictest41-21ksoftirqd/312:31:443
19338992722,3cyclictest41-21ksoftirqd/312:17:403
19338992722,3cyclictest41-21ksoftirqd/311:37:203
19338992722,3cyclictest41-21ksoftirqd/309:13:053
19336992721,4cyclictest25-21ksoftirqd/112:33:011
19335992722,3cyclictest9-21ksoftirqd/011:21:030
19335992722,3cyclictest9-21ksoftirqd/008:57:060
19335992722,3cyclictest9-21ksoftirqd/008:03:440
19336992620,4cyclictest25-21ksoftirqd/112:00:121
19335992621,3cyclictest9-21ksoftirqd/008:30:110
19335992621,3cyclictest9-21ksoftirqd/008:30:110
19335992620,4cyclictest9-21ksoftirqd/007:24:230
139391260,0ptp4l401ktimersoftd/310:03:333
19338992520,3cyclictest41-21ksoftirqd/311:03:253
19336992519,4cyclictest25-21ksoftirqd/110:45:391
19335992520,3cyclictest9-21ksoftirqd/008:09:180
19336992419,3cyclictest25-21ksoftirqd/111:50:361
19335992419,3cyclictest9-21ksoftirqd/009:02:560
139391240,1ptp4l401ktimersoftd/311:50:123
19335992318,3cyclictest9-21ksoftirqd/010:36:150
1933599213,15cyclictest20620-21df_abs08:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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