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2026-08-18 - 03:30
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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 Tue Aug 18, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206173,22phc2sys0-21swapper/319:09:443
138591206173,22phc2sys0-21swapper/319:09:433
291172205173,22sleep10-21swapper/119:08:351
291172205173,22sleep10-21swapper/119:08:351
290262200167,22sleep20-21swapper/219:07:232
290262200167,22sleep20-21swapper/219:07:232
290562199166,22sleep00-21swapper/019:07:450
290562199166,22sleep00-21swapper/019:07:450
2371321650,7sleep22952299cyclictest23:20:012
138491790,1ptp4l11043-21switchtime19:35:243
76482610,6sleep32952399cyclictest22:45:193
2952299590,22cyclictest2539-21cat20:25:192
2952299590,20cyclictest32394-21df_abs19:15:142
2952299550,29cyclictest25630-21awk23:20:262
138491530,1ptp4l401ktimersoftd/300:15:183
29523995233,16cyclictest41-21ksoftirqd/319:20:003
2952299512,19cyclictest9126-21cat23:55:012
195522510,3sleep20-21swapper/200:15:132
50798470,1rtkit-daemon0-21swapper/021:42:530
138491470,0ptp4l401ktimersoftd/323:32:403
29523994532,11cyclictest41-21ksoftirqd/320:55:013
29523994531,12cyclictest41-21ksoftirqd/320:44:593
138491450,8ptp4l401ktimersoftd/323:15:243
29522994439,3cyclictest21170-21cron23:15:002
29522994439,3cyclictest21170-21cron23:15:002
138491430,1ptp4l401ktimersoftd/322:25:213
138491430,0ptp4l401ktimersoftd/300:34:183
138491420,0ptp4l401ktimersoftd/323:49:473
138491420,0ptp4l401ktimersoftd/323:08:433
29521994134,4cyclictest25-21ksoftirqd/120:00:131
29523994035,2cyclictest41-21ksoftirqd/300:00:013
2952299400,20cyclictest5536-21awk23:45:212
138491400,2ptp4l121rcu_preempt20:10:143
2952299390,19cyclictest14212-21cstates23:00:132
29520993934,3cyclictest9-21ksoftirqd/022:25:010
29520993934,3cyclictest9-21ksoftirqd/019:20:000
29523993832,3cyclictest41-21ksoftirqd/322:05:003
29522993831,4cyclictest33-21ksoftirqd/221:00:012
29521993832,4cyclictest25-21ksoftirqd/122:37:231
2952199381,34cyclictest19060-21egrep22:05:131
29520993834,3cyclictest9-21ksoftirqd/023:09:590
29520993833,2cyclictest9-21ksoftirqd/023:45:210
29520993832,3cyclictest23723-21sh22:14:590
292042380,1sleep00-21swapper/020:15:000
29522993731,4cyclictest33-21ksoftirqd/219:49:072
29521993731,4cyclictest25-21ksoftirqd/123:34:151
29521993731,4cyclictest25-21ksoftirqd/119:59:371
29521993731,4cyclictest25-21ksoftirqd/100:20:411
29521993729,5cyclictest25-21ksoftirqd/122:10:111
29520993732,3cyclictest9-21ksoftirqd/023:00:000
29520993732,3cyclictest9-21ksoftirqd/022:35:000
29520993732,2cyclictest9-21ksoftirqd/000:00:000
29520993731,3cyclictest9-21ksoftirqd/021:55:590
29520993731,3cyclictest9-21ksoftirqd/021:25:150
29523993631,2cyclictest41-21ksoftirqd/321:35:003
29523993630,4cyclictest41-21ksoftirqd/319:49:123
29523993630,4cyclictest41-21ksoftirqd/319:31:073
29522993631,3cyclictest33-21ksoftirqd/219:24:552
29522993630,4cyclictest33-21ksoftirqd/219:41:372
29521993630,4cyclictest25-21ksoftirqd/122:58:371
29521993630,4cyclictest25-21ksoftirqd/122:04:091
29521993629,5cyclictest25-21ksoftirqd/119:17:171
29520993632,2cyclictest9-21ksoftirqd/023:45:010
29520993632,2cyclictest29913-21irqrtprio23:30:190
29520993630,4cyclictest9-21ksoftirqd/021:03:180
29520993630,3cyclictest9-21ksoftirqd/022:50:010
29520993630,3cyclictest9-21ksoftirqd/021:50:000
29520993630,3cyclictest9-21ksoftirqd/000:35:190
29520993629,4cyclictest9-21ksoftirqd/020:04:590
29520993629,4cyclictest9-21ksoftirqd/000:02:300
29520993628,7cyclictest9-21ksoftirqd/021:34:590
29523993532,2cyclictest41-21ksoftirqd/321:30:003
29523993530,3cyclictest41-21ksoftirqd/321:40:323
29523993530,3cyclictest41-21ksoftirqd/320:35:193
29523993529,4cyclictest41-21ksoftirqd/322:15:473
29523993529,4cyclictest41-21ksoftirqd/321:18:183
29522993530,3cyclictest33-21ksoftirqd/219:40:002
29522993529,4cyclictest33-21ksoftirqd/222:50:442
29522993529,4cyclictest33-21ksoftirqd/220:51:292
29522993529,4cyclictest33-21ksoftirqd/219:25:412
2952299352,29cyclictest11740-21wc22:55:132
29521993529,4cyclictest25-21ksoftirqd/121:46:391
29521993529,4cyclictest25-21ksoftirqd/121:32:361
29521993529,4cyclictest25-21ksoftirqd/121:23:341
29521993529,4cyclictest25-21ksoftirqd/120:36:361
29521993529,4cyclictest25-21ksoftirqd/120:27:171
29521993529,4cyclictest25-21ksoftirqd/119:46:291
29520993530,3cyclictest9-21ksoftirqd/023:20:010
29520993530,3cyclictest9-21ksoftirqd/021:15:000
29520993530,3cyclictest9-21ksoftirqd/021:15:000
29520993530,3cyclictest9-21ksoftirqd/019:40:130
29520993529,4cyclictest9-21ksoftirqd/022:16:360
29520993529,3cyclictest9-21ksoftirqd/000:15:010
29523993429,3cyclictest41-21ksoftirqd/321:35:213
29523993429,3cyclictest41-21ksoftirqd/320:30:143
29523993429,2cyclictest41-21ksoftirqd/300:25:003
29523993428,4cyclictest41-21ksoftirqd/300:12:003
29523993428,4cyclictest41-21ksoftirqd/300:07:523
29523993428,3cyclictest41-21ksoftirqd/323:50:203
29522993429,3cyclictest33-21ksoftirqd/222:14:542
29522993428,4cyclictest33-21ksoftirqd/223:29:232
29522993428,4cyclictest33-21ksoftirqd/222:20:032
29522993428,4cyclictest33-21ksoftirqd/221:07:062
29522993428,4cyclictest33-21ksoftirqd/219:12:322
29521993429,3cyclictest25-21ksoftirqd/121:44:041
29521993428,4cyclictest25-21ksoftirqd/123:56:181
29521993428,4cyclictest25-21ksoftirqd/123:44:581
29521993428,4cyclictest25-21ksoftirqd/123:38:201
29521993428,4cyclictest25-21ksoftirqd/122:31:541
29521993428,4cyclictest25-21ksoftirqd/122:24:101
29521993428,4cyclictest25-21ksoftirqd/120:52:321
29521993428,4cyclictest25-21ksoftirqd/100:08:381
29521993427,5cyclictest25-21ksoftirqd/122:29:241
29520993430,2cyclictest9-21ksoftirqd/020:20:150
29520993430,2cyclictest9-21ksoftirqd/019:30:000
29520993429,3cyclictest9-21ksoftirqd/023:40:000
29520993429,3cyclictest9-21ksoftirqd/022:29:370
29520993429,3cyclictest9-21ksoftirqd/020:30:010
29520993429,3cyclictest9-21ksoftirqd/019:55:140
29520993429,2cyclictest9-21ksoftirqd/021:50:240
29520993428,4cyclictest9-21ksoftirqd/022:43:280
29520993428,4cyclictest9-21ksoftirqd/022:43:270
29520993428,4cyclictest9-21ksoftirqd/021:22:440
29520993428,4cyclictest9-21ksoftirqd/019:11:460
29520993428,3cyclictest9-21ksoftirqd/000:05:200
29520993427,4cyclictest9-21ksoftirqd/023:11:430
29520993427,4cyclictest9-21ksoftirqd/023:11:430
29520993427,4cyclictest9-21ksoftirqd/021:05:470
29523993329,3cyclictest41-21ksoftirqd/300:35:203
29523993329,2cyclictest41-21ksoftirqd/322:15:003
29523993328,3cyclictest41-21ksoftirqd/323:39:593
29523993328,3cyclictest41-21ksoftirqd/320:25:203
29523993327,4cyclictest41-21ksoftirqd/320:45:123
29523993327,4cyclictest41-21ksoftirqd/320:24:183
29522993328,3cyclictest33-21ksoftirqd/222:43:542
29522993328,3cyclictest33-21ksoftirqd/222:43:542
29522993328,3cyclictest33-21ksoftirqd/220:05:112
29522993327,4cyclictest33-21ksoftirqd/223:56:592
29522993327,4cyclictest33-21ksoftirqd/222:32:032
29522993327,4cyclictest33-21ksoftirqd/222:26:572
29522993327,4cyclictest33-21ksoftirqd/221:26:552
29522993327,4cyclictest33-21ksoftirqd/200:07:142
29522993314,16cyclictest8063-21run-parts22:45:242
29521993327,4cyclictest25-21ksoftirqd/123:05:401
29521993327,4cyclictest25-21ksoftirqd/121:19:321
29521993327,4cyclictest25-21ksoftirqd/120:56:581
29521993327,4cyclictest25-21ksoftirqd/119:37:591
29521993327,3cyclictest25-21ksoftirqd/100:00:101
29520993330,2cyclictest9-21ksoftirqd/022:35:230
29520993329,3cyclictest9-21ksoftirqd/019:55:010
29520993329,2cyclictest9-21ksoftirqd/023:50:190
29520993329,2cyclictest9-21ksoftirqd/022:05:180
29520993329,2cyclictest9-21ksoftirqd/000:30:120
29520993328,3cyclictest9-21ksoftirqd/023:25:010
29520993328,3cyclictest9-21ksoftirqd/023:00:180
29520993328,3cyclictest9-21ksoftirqd/020:55:150
29520993328,3cyclictest9-21ksoftirqd/019:40:000
138491330,10ptp4l401ktimersoftd/323:25:413
138491330,0ptp4l401ktimersoftd/323:21:373
29523993228,2cyclictest41-21ksoftirqd/320:20:003
29523993227,3cyclictest41-21ksoftirqd/322:20:193
29523993226,4cyclictest41-21ksoftirqd/320:02:403
29523993225,4cyclictest41-21ksoftirqd/323:11:393
29523993225,4cyclictest41-21ksoftirqd/323:11:393
29522993227,3cyclictest33-21ksoftirqd/219:33:222
29522993226,4cyclictest33-21ksoftirqd/223:44:322
29522993226,4cyclictest33-21ksoftirqd/200:31:212
29521993227,3cyclictest25-21ksoftirqd/123:50:121
29521993227,3cyclictest25-21ksoftirqd/123:23:211
29521993227,3cyclictest25-21ksoftirqd/122:50:421
29521993227,3cyclictest25-21ksoftirqd/121:26:501
29521993226,4cyclictest25-21ksoftirqd/123:16:231
29521993226,4cyclictest25-21ksoftirqd/122:15:371
29521993226,4cyclictest25-21ksoftirqd/120:23:081
29521993226,4cyclictest25-21ksoftirqd/119:54:111
29521993226,4cyclictest25-21ksoftirqd/119:23:461
29521993226,4cyclictest25-21ksoftirqd/119:14:331
29520993228,3cyclictest9-21ksoftirqd/022:04:590
29520993228,3cyclictest9-21ksoftirqd/020:15:140
29520993228,2cyclictest9-21ksoftirqd/020:50:210
29520993228,2cyclictest9-21ksoftirqd/020:40:190
29520993228,2cyclictest9-21ksoftirqd/019:25:000
29520993227,3cyclictest9-21ksoftirqd/021:35:210
29520993227,3cyclictest9-21ksoftirqd/020:45:190
29520993227,3cyclictest9-21ksoftirqd/020:38:290
29520993226,3cyclictest9-21ksoftirqd/021:19:190
29520993226,3cyclictest9-21ksoftirqd/020:35:000
29523993127,3cyclictest41-21ksoftirqd/321:57:383
29523993127,2cyclictest41-21ksoftirqd/322:35:133
29523993127,2cyclictest41-21ksoftirqd/321:10:163
29523993127,2cyclictest41-21ksoftirqd/321:10:163
29523993126,3cyclictest41-21ksoftirqd/321:50:183
29523993126,3cyclictest41-21ksoftirqd/319:20:533
29523993125,4cyclictest41-21ksoftirqd/322:59:443
29523993125,4cyclictest41-21ksoftirqd/322:07:493
29523993125,4cyclictest41-21ksoftirqd/321:48:343
29523993125,4cyclictest41-21ksoftirqd/319:25:123
29523993125,3cyclictest41-21ksoftirqd/323:05:003
2952299317,21cyclictest1319-21snmpd21:45:232
29522993125,4cyclictest33-21ksoftirqd/223:39:302
29522993125,4cyclictest33-21ksoftirqd/221:30:052
29522993125,4cyclictest33-21ksoftirqd/220:20:122
29522993124,4cyclictest33-21ksoftirqd/220:41:062
29521993126,3cyclictest25-21ksoftirqd/119:29:391
29521993126,3cyclictest25-21ksoftirqd/100:26:591
29521993126,3cyclictest25-21ksoftirqd/100:17:291
29521993125,4cyclictest25-21ksoftirqd/121:14:431
29521993125,4cyclictest25-21ksoftirqd/121:14:421
29521993125,4cyclictest25-21ksoftirqd/121:02:561
29521993125,4cyclictest25-21ksoftirqd/119:44:491
29521993125,4cyclictest25-21ksoftirqd/100:34:581
29521993124,4cyclictest25-21ksoftirqd/123:04:111
29521993124,4cyclictest25-21ksoftirqd/120:45:021
29520993126,3cyclictest9-21ksoftirqd/019:45:250
29520993126,3cyclictest9-21ksoftirqd/000:25:220
29520993126,3cyclictest9-21ksoftirqd/000:20:390
29520993125,3cyclictest9-21ksoftirqd/022:50:500
29520993125,3cyclictest9-21ksoftirqd/020:05:180
29520993124,5cyclictest9-21ksoftirqd/023:27:250
138491310,0ptp4l401ktimersoftd/320:05:113
57142300,8sleep12952199cyclictest23:45:221
29523993025,3cyclictest41-21ksoftirqd/321:00:213
29523993025,3cyclictest41-21ksoftirqd/321:00:013
29523993025,3cyclictest41-21ksoftirqd/319:44:393
2952299305,22cyclictest24249-21latency_hist20:05:002
29522993025,3cyclictest33-21ksoftirqd/222:03:172
29522993025,3cyclictest33-21ksoftirqd/221:58:272
29522993025,3cyclictest33-21ksoftirqd/221:37:262
29522993025,3cyclictest33-21ksoftirqd/221:14:402
29522993025,3cyclictest33-21ksoftirqd/221:14:402
29522993025,3cyclictest33-21ksoftirqd/219:57:432
29522993024,4cyclictest33-21ksoftirqd/200:12:562
29522993024,4cyclictest33-21ksoftirqd/200:01:042
2952299301,26cyclictest29013-21/usr/sbin/munin23:30:142
29522993012,15cyclictest1620-21/usr/sbin/munin22:35:162
29521993025,3cyclictest25-21ksoftirqd/100:12:181
29521993024,4cyclictest25-21ksoftirqd/123:26:541
29521993024,4cyclictest25-21ksoftirqd/120:10:441
29521993024,3cyclictest25-21ksoftirqd/119:33:251
29521993023,4cyclictest25-21ksoftirqd/121:55:111
29520993026,3cyclictest9-21ksoftirqd/019:31:530
138491300,0ptp4l401ktimersoftd/323:40:503
138491300,0ptp4l401ktimersoftd/322:40:283
138491300,0ptp4l401ktimersoftd/322:40:273
138491300,0ptp4l401ktimersoftd/321:07:213
138491300,0ptp4l401ktimersoftd/300:00:343
29523992925,2cyclictest41-21ksoftirqd/322:30:143
29523992924,3cyclictest41-21ksoftirqd/321:21:553
29523992924,3cyclictest41-21ksoftirqd/319:13:423
2952299293,21cyclictest4520-21apt-get20:30:132
29522992924,3cyclictest33-21ksoftirqd/219:53:462
29522992923,4cyclictest33-21ksoftirqd/221:54:122
29522992923,4cyclictest33-21ksoftirqd/221:23:152
29522992923,4cyclictest33-21ksoftirqd/220:35:572
29521992923,4cyclictest25-21ksoftirqd/120:06:471
29521992922,4cyclictest25-21ksoftirqd/122:45:001
29520992923,4cyclictest9-21ksoftirqd/000:16:030
29523992823,3cyclictest41-21ksoftirqd/300:25:223
2952299288,17cyclictest30379-21sed20:15:222
2952299287,18cyclictest19732-21df_abs21:00:162
29522992812,14cyclictest12336-21df_abs20:45:142
29522992811,14cyclictest21404-21wc22:09:592
29521992823,3cyclictest25-21ksoftirqd/120:40:371
29521992822,4cyclictest25-21ksoftirqd/121:53:181
29521992822,4cyclictest25-21ksoftirqd/100:39:111
29523992723,3cyclictest41-21ksoftirqd/322:50:013
29523992721,4cyclictest41-21ksoftirqd/319:55:423
29522992722,3cyclictest33-21ksoftirqd/220:11:352
29522992721,4cyclictest33-21ksoftirqd/221:16:122
29522992711,13cyclictest29468-21cat00:35:132
29522992710,14cyclictest24475-21expr00:25:162
138491270,0ptp4l401ktimersoftd/319:53:523
2952299268,15cyclictest17014-21fschecks_count23:05:152
2952299260,23cyclictest7980-21phc2sys21:40:232
29521992621,3cyclictest25-21ksoftirqd/121:39:501
2952299252,18cyclictest21775-21apt-get00:20:132
2952299251,21cyclictest24305-21ls22:15:132
29521992519,3cyclictest25-21ksoftirqd/122:45:001
29521992519,3cyclictest25-21ksoftirqd/122:45:001
29521992318,3cyclictest25-21ksoftirqd/123:10:171
29521992318,3cyclictest25-21ksoftirqd/123:10:171
29521992318,3cyclictest25-21ksoftirqd/121:08:511
29521991914,3cyclictest29842-21hddtemp_smartct20:15:171
29521991814,2cyclictest0-21swapper/120:33:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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