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2026-08-04 - 16:52
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Tue Aug 04, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3000527056,8sleep10-21swapper/107:08:021
2922626735,28sleep00-21swapper/007:03:370
46062450,1sleep04597-21munin-run12:33:140
30207993310,18cyclictest0-21swapper/011:57:420
30208993210,2cyclictest0-21swapper/110:10:581
30207993210,1cyclictest0-21swapper/009:41:300
30208993016,10cyclictest23896-21kworker/u4:011:22:301
30208992828,0cyclictest0-21swapper/112:12:531
30207992828,0cyclictest28323-21kworker/u4:110:22:240
3020899270,26cyclictest24-21ksoftirqd/109:49:241
30207992710,10cyclictest0-21swapper/011:36:100
30208992624,1cyclictest24-21ksoftirqd/107:53:101
30208992621,4cyclictest7664-21apache209:17:251
30208992615,8cyclictest7664-21apache207:47:121
3020899261,4cyclictest0-21swapper/109:47:521
3020799260,19cyclictest0-21swapper/011:28:310
30208992524,0cyclictest24-21ksoftirqd/111:13:261
30208992524,0cyclictest24-21ksoftirqd/109:53:271
30208992523,1cyclictest30170-21ssh10:57:531
30208992523,1cyclictest24-21ksoftirqd/111:03:311
3020899252,22cyclictest0-21swapper/109:32:441
30208992516,3cyclictest24-21ksoftirqd/107:42:091
3020899250,14cyclictest0-21swapper/112:03:271
30207992518,6cyclictest802-21apache210:24:200
30207992510,7cyclictest0-21swapper/007:41:560
30208992424,0cyclictest24-21ksoftirqd/112:33:451
30208992424,0cyclictest24-21ksoftirqd/110:51:511
30208992424,0cyclictest0-21swapper/111:56:561
30208992424,0cyclictest0-21swapper/111:28:181
30208992423,1cyclictest0-21swapper/112:17:351
30208992422,1cyclictest24-21ksoftirqd/110:00:091
30208992420,1cyclictest0-21swapper/108:53:351
30208992418,4cyclictest7664-21apache210:04:271
30208992417,3cyclictest24-21ksoftirqd/109:38:091
3020899241,22cyclictest23896-21kworker/u4:011:36:311
3020899240,23cyclictest0-21swapper/112:32:021
30207992410,9cyclictest0-21swapper/011:25:260
30207992410,5cyclictest0-21swapper/009:43:310
30207992410,11cyclictest0-21swapper/010:50:340
30207992410,0cyclictest0-21swapper/011:12:360
3020799240,1cyclictest0-21swapper/010:31:030
3020799240,19cyclictest0-21swapper/011:46:380
3020899235,11cyclictest0-21swapper/108:08:331
3020899233,3cyclictest91rcu_preempt09:11:251
3020899232,20cyclictest27136-21rm09:28:141
30208992321,1cyclictest24-21ksoftirqd/111:48:311
30208992321,1cyclictest24-21ksoftirqd/111:43:001
30208992318,5cyclictest7641-21apache208:50:301
30208992314,3cyclictest24-21ksoftirqd/111:46:121
30208992313,6cyclictest7664-21apache210:32:541
3020899231,18cyclictest29591-21cron12:23:141
30208992310,4cyclictest0-21swapper/108:28:271
3020899230,0cyclictest91rcu_preempt10:17:351
3020799233,12cyclictest0-21swapper/011:58:330
30207992319,3cyclictest7-21ksoftirqd/009:32:040
30207992318,4cyclictest7664-21apache209:37:060
30207992310,5cyclictest0-21swapper/011:22:200
30207992310,11cyclictest0-21swapper/012:08:370
3020799230,5cyclictest30608-21ntp_kernel_pll_12:23:330
3020899224,3cyclictest91rcu_preempt11:24:191
3020899223,4cyclictest91rcu_preempt10:35:061
30208992222,0cyclictest24-21ksoftirqd/112:23:251
30208992218,2cyclictest24-21ksoftirqd/109:20:451
3020899221,5cyclictest91rcu_preempt08:38:281
30208992210,6cyclictest0-21swapper/107:36:161
3020899220,1cyclictest91rcu_preempt10:43:091
30207992218,2cyclictest7641-21apache211:38:300
30207992212,6cyclictest22519-21sshd09:21:150
30207992211,5cyclictest0-21swapper/011:50:000
30207992210,5cyclictest0-21swapper/012:08:040
30207992210,3cyclictest0-21swapper/010:16:350
30207992210,3cyclictest0-21swapper/008:37:060
30207992210,12cyclictest0-21swapper/009:54:460
3020799220,16cyclictest0-21swapper/010:07:220
3020899214,3cyclictest91rcu_preempt09:07:161
3020899214,3cyclictest91rcu_preempt09:07:161
3020899211,2cyclictest91rcu_preempt10:59:151
30208992111,4cyclictest0-21swapper/111:58:381
30208992110,5cyclictest0-21swapper/107:53:281
30208992110,4cyclictest0-21swapper/108:03:271
30208992110,1cyclictest0-21swapper/110:43:431
3020899210,4cyclictest91rcu_preempt07:58:281
30207992120,1cyclictest7664-21apache209:53:050
3020799211,9cyclictest24479-21snmpd11:05:580
30207992116,2cyclictest0-21swapper/012:18:340
30207992110,7cyclictest0-21swapper/010:58:340
30207992110,6cyclictest0-21swapper/012:13:240
30207992110,3cyclictest0-21swapper/009:24:450
3020899204,2cyclictest91rcu_preempt07:19:271
3020899203,10cyclictest28682-21munin-run08:28:141
3020899202,2cyclictest91rcu_preempt10:22:131
30208992017,2cyclictest0-21swapper/107:26:111
30208992016,3cyclictest0-21swapper/107:17:541
30208992015,4cyclictest24-21ksoftirqd/111:08:271
3020899200,7cyclictest91rcu_preempt10:25:051
3020799206,9cyclictest0-21swapper/008:43:320
3020799205,6cyclictest0-21swapper/012:33:320
30207992018,1cyclictest0-21swapper/008:23:300
30207992011,6cyclictest0-21swapper/009:16:130
30207992010,4cyclictest0-21swapper/011:14:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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