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2026-06-03 - 08:12
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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 792 highest latencies:
System rackdslot4.osadl.org (updated Wed Jun 03, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204169,23phc2sys0-21swapper/319:07:143
31312203169,22sleep20-21swapper/219:06:092
31242199164,23sleep10-21swapper/119:06:031
11312199165,22sleep00-21swapper/019:05:020
2173121240,2sleep20-21swapper/200:15:262
134991750,1getstats22471-1kworker/3:1H20:45:463
388199636,11cyclictest25430-21runrttasks00:25:142
117292630,2sleep20-21swapper/223:55:242
81452620,2sleep28149-21fschecks_count22:45:172
138491610,1ptp4l5436-21latency_hist21:35:013
388199576,10cyclictest28698-21cat20:10:172
388199576,10cyclictest28698-21cat20:10:172
388199574,11cyclictest27917-21cstates22:20:142
388199565,20cyclictest7689-21latency_hist23:50:012
388199565,20cyclictest10931-21cut21:45:152
388199565,17cyclictest14775-21taskset21:51:202
388199555,17cyclictest25385-21egrep23:20:132
388199554,10cyclictest1319-21snmpd20:04:152
388199544,9cyclictest16369-21irqrtprio23:00:182
99612530,2sleep10-21swapper/122:50:001
388199535,11cyclictest3535-21sed20:25:132
388199534,15cyclictest20138-21runrttasks23:09:542
3879995247,3cyclictest32167-21sshd22:27:320
3879995247,3cyclictest32167-21sshd22:27:320
235372520,1sleep00-21swapper/021:05:170
388199515,11cyclictest9090-21cat20:35:202
138491510,0ptp4l401ktimersoftd/321:05:183
99932490,2sleep30-21swapper/319:29:593
388199494,7cyclictest11722-21grep19:30:212
388199494,17cyclictest30144-21apt-get00:35:122
388199494,11cyclictest26216-21cat20:05:212
388199493,15cyclictest27693-21apt-get00:30:132
1385914934,8phc2sys0-21swapper/319:10:003
1385914934,8phc2sys0-21swapper/319:10:003
388199484,8cyclictest3886-21apt-config19:10:012
388199484,8cyclictest3886-21apt-config19:10:012
388199484,8cyclictest14618-21cat22:55:262
388199484,8cyclictest14618-21cat22:55:262
388199484,14cyclictest17352-21ls19:45:252
75352470,2sleep00-21swapper/020:32:150
388199474,7cyclictest18065-21apt-get20:55:092
388199473,7cyclictest13233-21apt-get19:40:072
388199473,7cyclictest13233-21apt-get19:40:072
388199463,8cyclictest17847-21apt-get00:10:122
388199454,7cyclictest20985-21irqrtprio22:05:192
388199453,7cyclictest5555-21apt-get20:30:122
388199445,8cyclictest23143-21df00:20:152
388199445,7cyclictest3348-21diskstats23:40:152
388199444,8cyclictest4158-21ls21:30:512
388199435,8cyclictest13619-21diskstats20:45:162
388199435,7cyclictest26618-21meminfo21:10:202
388199435,14cyclictest30911-21diskstats21:20:162
388199434,8cyclictest9612-21ls21:40:252
388199434,7cyclictest30879-21iostat22:25:162
388199434,7cyclictest30879-21iostat22:25:162
388199434,7cyclictest15655-21diskstats00:05:192
388199434,16cyclictest2736-21grep22:35:122
388199434,15cyclictest7789-21/usr/sbin/munin23:50:182
388199434,15cyclictest465-21egrep21:25:132
388199434,15cyclictest465-21egrep21:25:132
388199433,14cyclictest20399-21apt-get23:10:122
388199432,8cyclictest12732-21apt-get00:00:122
388199424,15cyclictest25178-21egrep22:15:122
138491420,0ptp4l401ktimersoftd/322:30:513
138491420,0ptp4l401ktimersoftd/319:55:363
3880994128,11cyclictest25-21ksoftirqd/122:04:271
138491410,0ptp4l401ktimersoftd/321:29:563
138491410,0ptp4l401ktimersoftd/321:29:563
138491410,0ptp4l401ktimersoftd/321:15:173
3879994035,3cyclictest12468-21sshd20:42:150
3882993931,5cyclictest41-21ksoftirqd/320:30:133
388199393,7cyclictest31297-21irqstats23:30:192
3880993915,21cyclictest19504-21sendmail_mailst20:55:211
3882993825,11cyclictest41-21ksoftirqd/320:04:593
138491380,0ptp4l401ktimersoftd/321:35:233
3881993731,4cyclictest33-21ksoftirqd/220:18:582
3880993732,3cyclictest25-21ksoftirqd/120:44:001
3880993731,4cyclictest25-21ksoftirqd/122:25:591
3880993731,4cyclictest25-21ksoftirqd/122:25:581
3880993730,5cyclictest25-21ksoftirqd/121:24:351
3879993731,4cyclictest9-21ksoftirqd/023:46:520
3879993731,3cyclictest6186-21dump-pmu-power19:15:010
3879993731,3cyclictest6186-21dump-pmu-power19:15:010
138491370,0ptp4l401ktimersoftd/300:25:143
3882993630,4cyclictest41-21ksoftirqd/323:11:523
3882993630,4cyclictest41-21ksoftirqd/300:39:063
3882993630,3cyclictest41-21ksoftirqd/300:00:013
388199366,16cyclictest9035-21sshd19:21:582
3881993629,4cyclictest33-21ksoftirqd/220:25:012
3880993631,3cyclictest25-21ksoftirqd/120:33:521
3880993630,4cyclictest25-21ksoftirqd/123:39:421
3880993630,4cyclictest25-21ksoftirqd/122:42:101
3880993630,4cyclictest25-21ksoftirqd/122:22:161
3880993630,4cyclictest25-21ksoftirqd/121:57:571
3880993630,4cyclictest25-21ksoftirqd/119:39:011
3880993630,3cyclictest27703-21wc00:30:141
3882993530,3cyclictest41-21ksoftirqd/322:45:113
3882993530,3cyclictest41-21ksoftirqd/320:05:143
3882993530,3cyclictest41-21ksoftirqd/300:24:303
3882993529,4cyclictest41-21ksoftirqd/319:22:213
3882993528,4cyclictest41-21ksoftirqd/321:49:483
3881993529,4cyclictest33-21ksoftirqd/223:35:582
3881993529,4cyclictest33-21ksoftirqd/220:50:382
3881993529,4cyclictest33-21ksoftirqd/219:18:482
388199351,10cyclictest0-21swapper/222:30:262
3880993529,4cyclictest25-21ksoftirqd/123:47:001
3880993529,4cyclictest25-21ksoftirqd/123:25:301
3880993529,4cyclictest25-21ksoftirqd/121:19:501
3880993529,4cyclictest25-21ksoftirqd/120:23:451
3880993529,4cyclictest25-21ksoftirqd/119:22:391
3879993530,3cyclictest9-21ksoftirqd/019:38:190
3879993529,4cyclictest9-21ksoftirqd/019:43:400
3879993529,4cyclictest9-21ksoftirqd/019:43:400
3879993529,4cyclictest9-21ksoftirqd/000:30:320
3882993428,4cyclictest41-21ksoftirqd/323:18:303
3882993428,4cyclictest41-21ksoftirqd/323:06:273
3882993428,4cyclictest41-21ksoftirqd/322:56:163
3882993428,4cyclictest41-21ksoftirqd/322:56:163
3882993428,4cyclictest41-21ksoftirqd/322:09:143
3881993429,3cyclictest1328-21sshd22:12:292
3881993428,4cyclictest33-21ksoftirqd/220:42:402
3881993427,4cyclictest33-21ksoftirqd/219:26:132
3880993429,3cyclictest25-21ksoftirqd/122:40:011
3880993429,3cyclictest25-21ksoftirqd/120:00:111
3880993428,4cyclictest25-21ksoftirqd/123:44:321
3880993428,4cyclictest25-21ksoftirqd/119:55:101
3880993428,4cyclictest25-21ksoftirqd/119:54:131
3880993428,4cyclictest25-21ksoftirqd/119:49:201
3880993428,4cyclictest25-21ksoftirqd/119:41:461
3880993428,4cyclictest25-21ksoftirqd/119:41:461
3880993428,3cyclictest25-21ksoftirqd/120:29:581
3880993427,4cyclictest25-21ksoftirqd/123:34:131
3879993428,4cyclictest9-21ksoftirqd/022:30:270
3879993428,4cyclictest9-21ksoftirqd/021:58:090
3879993428,4cyclictest9-21ksoftirqd/020:46:350
3879993427,4cyclictest9-21ksoftirqd/021:33:330
138491340,0ptp4l401ktimersoftd/322:25:273
138491340,0ptp4l401ktimersoftd/322:25:263
3882993329,2cyclictest138491ptp4l21:42:313
3882993328,3cyclictest41-21ksoftirqd/320:20:383
3882993327,4cyclictest41-21ksoftirqd/319:34:303
3882993327,3cyclictest41-21ksoftirqd/321:24:583
388199335,16cyclictest10343-21grep22:50:132
3881993327,4cyclictest33-21ksoftirqd/219:51:132
3881993326,4cyclictest33-21ksoftirqd/222:00:062
388099333,2cyclictest121rcu_preempt22:11:321
3880993328,3cyclictest25-21ksoftirqd/123:24:551
3880993328,3cyclictest25-21ksoftirqd/119:30:071
3880993328,3cyclictest25-21ksoftirqd/100:35:111
3880993327,4cyclictest25-21ksoftirqd/123:55:031
3880993327,4cyclictest25-21ksoftirqd/122:59:231
3880993327,4cyclictest25-21ksoftirqd/122:59:231
3880993327,4cyclictest25-21ksoftirqd/121:01:441
3880993327,4cyclictest25-21ksoftirqd/120:17:351
3880993327,4cyclictest25-21ksoftirqd/119:15:331
3880993310,20cyclictest19023-21cat23:05:211
3879993328,3cyclictest9-21ksoftirqd/023:57:530
3879993328,3cyclictest9-21ksoftirqd/023:32:460
3879993328,3cyclictest9-21ksoftirqd/023:27:020
3879993328,3cyclictest9-21ksoftirqd/020:15:530
3879993328,3cyclictest9-21ksoftirqd/019:33:010
3879993327,4cyclictest9-21ksoftirqd/023:16:070
3879993327,4cyclictest9-21ksoftirqd/021:40:030
3879993327,4cyclictest9-21ksoftirqd/021:37:260
3879993327,4cyclictest9-21ksoftirqd/000:38:550
3879993327,4cyclictest9-21ksoftirqd/000:06:570
3879993327,3cyclictest9-21ksoftirqd/022:43:090
3879993327,3cyclictest9-21ksoftirqd/019:52:230
138491330,0ptp4l401ktimersoftd/322:20:213
135191330,1getstats0-21swapper/319:50:063
3882993227,3cyclictest41-21ksoftirqd/323:25:013
3882993226,4cyclictest41-21ksoftirqd/323:28:013
3882993226,3cyclictest41-21ksoftirqd/321:02:443
3882993225,4cyclictest41-21ksoftirqd/300:19:443
3881993226,4cyclictest33-21ksoftirqd/222:44:472
3881993225,4cyclictest33-21ksoftirqd/221:19:102
388099329,21cyclictest26259-21iostat20:05:201
388099329,20cyclictest15702-21cpuspeed_turbos20:50:131
3880993227,3cyclictest25-21ksoftirqd/121:10:511
3880993227,3cyclictest25-21ksoftirqd/120:15:001
3880993227,3cyclictest25-21ksoftirqd/120:15:001
3880993226,4cyclictest25-21ksoftirqd/121:43:571
3880993226,4cyclictest25-21ksoftirqd/121:07:381
3880993213,16cyclictest5813-21sshd19:10:261
3880993213,16cyclictest5813-21sshd19:10:261
3880993210,20cyclictest25443-21ls22:15:131
3880993210,19cyclictest814-21ls21:25:151
3880993210,19cyclictest814-21ls21:25:141
3879993227,3cyclictest9-21ksoftirqd/022:39:160
3879993227,3cyclictest9-21ksoftirqd/020:36:320
3879993226,4cyclictest9-21ksoftirqd/023:24:010
3879993226,4cyclictest9-21ksoftirqd/023:07:280
3879993226,4cyclictest9-21ksoftirqd/022:52:480
3879993226,4cyclictest9-21ksoftirqd/022:45:100
3879993226,4cyclictest9-21ksoftirqd/022:06:060
3879993226,4cyclictest9-21ksoftirqd/020:52:000
3879993226,4cyclictest9-21ksoftirqd/019:16:010
3879993226,3cyclictest9-21ksoftirqd/021:14:400
138491320,0ptp4l401ktimersoftd/323:40:213
138491320,0ptp4l401ktimersoftd/321:10:503
138491320,0ptp4l401ktimersoftd/319:41:483
138491320,0ptp4l401ktimersoftd/319:41:483
138491320,0ptp4l401ktimersoftd/300:34:523
3882993126,3cyclictest41-21ksoftirqd/320:44:233
3882993126,3cyclictest41-21ksoftirqd/319:35:323
3882993126,3cyclictest41-21ksoftirqd/319:19:043
3882993126,3cyclictest41-21ksoftirqd/300:02:203
3882993125,4cyclictest41-21ksoftirqd/320:36:433
3881993126,3cyclictest33-21ksoftirqd/221:00:122
3881993125,4cyclictest33-21ksoftirqd/221:06:522
3880993126,3cyclictest25-21ksoftirqd/100:14:511
3880993125,4cyclictest25-21ksoftirqd/123:12:391
3880993125,4cyclictest25-21ksoftirqd/121:39:231
3880993125,4cyclictest25-21ksoftirqd/119:29:571
3880993124,5cyclictest25-21ksoftirqd/100:06:301
3880993112,16cyclictest13180-21expr21:50:151
3880993110,18cyclictest27417-21seq00:29:441
3879993126,3cyclictest9-21ksoftirqd/021:54:510
3879993126,3cyclictest9-21ksoftirqd/021:26:310
3879993126,3cyclictest9-21ksoftirqd/021:26:310
3879993126,3cyclictest9-21ksoftirqd/021:20:210
3879993126,3cyclictest9-21ksoftirqd/019:28:340
3879993125,4cyclictest9-21ksoftirqd/022:15:490
3879993125,4cyclictest9-21ksoftirqd/021:17:480
3879993125,3cyclictest9-21ksoftirqd/000:15:000
3879993124,4cyclictest9-21ksoftirqd/023:51:530
138491310,0ptp4l401ktimersoftd/322:40:133
3882993025,3cyclictest41-21ksoftirqd/323:36:083
3882993025,3cyclictest41-21ksoftirqd/320:29:223
3882993024,4cyclictest41-21ksoftirqd/322:12:553
3881993025,3cyclictest33-21ksoftirqd/219:59:372
3881993024,4cyclictest33-21ksoftirqd/221:37:322
388099308,19cyclictest13211-21grep00:00:161
3880993025,3cyclictest25-21ksoftirqd/123:00:101
3880993013,14cyclictest10777-21df_abs21:45:131
3879993025,3cyclictest9-21ksoftirqd/023:42:250
3879993025,3cyclictest9-21ksoftirqd/019:55:130
3879993024,3cyclictest9-21ksoftirqd/020:25:170
138491300,0ptp4l401ktimersoftd/322:38:133
3882992924,3cyclictest41-21ksoftirqd/300:11:293
3881992924,3cyclictest33-21ksoftirqd/223:16:312
388099295,3cyclictest9568-21awk23:50:261
3880992924,3cyclictest25-21ksoftirqd/122:30:111
3880992923,4cyclictest25-21ksoftirqd/120:36:531
3880992923,3cyclictest25-21ksoftirqd/100:20:041
388099290,4cyclictest21359-21meminfo22:05:201
3879992924,3cyclictest9-21ksoftirqd/023:00:100
3879992924,3cyclictest9-21ksoftirqd/020:24:020
3879992924,3cyclictest9-21ksoftirqd/000:27:380
3879992924,3cyclictest9-21ksoftirqd/000:15:300
3879992923,4cyclictest9-21ksoftirqd/022:59:540
3879992923,4cyclictest9-21ksoftirqd/022:59:540
3879992923,4cyclictest9-21ksoftirqd/022:23:270
3879992923,4cyclictest9-21ksoftirqd/020:11:220
3879992923,4cyclictest9-21ksoftirqd/020:11:220
138491290,0ptp4l401ktimersoftd/322:02:143
138491290,0ptp4l401ktimersoftd/321:51:003
138491290,0ptp4l401ktimersoftd/320:15:513
3882992824,2cyclictest41-21ksoftirqd/323:00:183
3882992823,3cyclictest41-21ksoftirqd/323:47:513
3882992823,3cyclictest41-21ksoftirqd/323:32:473
3882992823,3cyclictest41-21ksoftirqd/322:16:113
3882992823,3cyclictest41-21ksoftirqd/321:55:203
3882992822,4cyclictest41-21ksoftirqd/320:50:433
3880992823,3cyclictest25-21ksoftirqd/123:16:441
3880992822,4cyclictest25-21ksoftirqd/100:15:251
388099280,3cyclictest3645-21hddtemp_smartct21:30:491
3879992823,3cyclictest9-21ksoftirqd/000:22:290
3879992822,4cyclictest9-21ksoftirqd/023:38:490
3879992822,4cyclictest9-21ksoftirqd/019:48:260
138491280,0ptp4l401ktimersoftd/322:52:283
3882992722,3cyclictest41-21ksoftirqd/323:54:323
388099275,3cyclictest15369-21cron20:50:011
3879992722,3cyclictest9-21ksoftirqd/023:10:090
3879992722,3cyclictest9-21ksoftirqd/021:05:010
3879992722,3cyclictest9-21ksoftirqd/020:04:430
3879992722,3cyclictest9-21ksoftirqd/019:22:510
3879992721,4cyclictest9-21ksoftirqd/022:01:010
138491270,0ptp4l401ktimersoftd/320:55:433
3882992620,4cyclictest41-21ksoftirqd/320:14:323
3882992620,4cyclictest41-21ksoftirqd/320:14:323
3882992620,4cyclictest41-21ksoftirqd/319:45:493
3881992621,3cyclictest33-21ksoftirqd/223:27:162
388199260,24cyclictest0-21swapper/219:38:002
388099268,15cyclictest10545-21cstates22:50:131
3879992620,4cyclictest9-21ksoftirqd/022:13:520
3879992620,4cyclictest9-21ksoftirqd/000:02:000
3881992519,4cyclictest33-21ksoftirqd/221:58:152
3879992520,3cyclictest9-21ksoftirqd/020:58:580
3882992419,3cyclictest41-21ksoftirqd/300:05:233
3879992418,4cyclictest9-21ksoftirqd/021:45:080
3879992318,3cyclictest9-21ksoftirqd/020:08:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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