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2026-03-17 - 06:08
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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 rack1slot1.osadl.org (updated Tue Mar 17, 2026 00:45:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
154282211178,21sleep20-21swapper/219:07:022
154412202164,24sleep00-21swapper/019:07:120
153972200161,25sleep30-21swapper/319:06:403
156342197145,41sleep10-21swapper/119:09:431
266142660,0sleep10-21swapper/121:30:381
69892650,0sleep10-21swapper/123:10:201
183302580,0sleep00-21swapper/022:45:110
102342550,1sleep08595-21diskmemload23:15:150
81532170,0sleep20-21swapper/222:30:202
62072160,0sleep20-21swapper/200:34:522
1573699112,4cyclictest3714-21perf20:59:590
1573799100,4cyclictest0-21swapper/120:40:111
1573699100,5cyclictest14645-21latency_hist20:15:000
157369990,6cyclictest0-21swapper/021:50:110
157479986,1cyclictest707-21snmpd23:21:273
157479986,1cyclictest707-21snmpd23:16:483
157479986,1cyclictest707-21snmpd22:34:263
157479986,1cyclictest707-21snmpd22:06:253
157479986,1cyclictest707-21snmpd21:57:403
157479986,1cyclictest707-21snmpd21:11:323
157479986,1cyclictest707-21snmpd20:38:503
157479986,1cyclictest707-21snmpd19:32:503
157479985,1cyclictest35-21ksoftirqd/321:49:593
157479982,4cyclictest0-21swapper/323:40:203
157479981,5cyclictest8595-21diskmemload00:15:033
157479981,5cyclictest561-21nscd00:21:213
157479980,6cyclictest8595-21diskmemload22:01:473
157479980,6cyclictest8595-21diskmemload21:34:293
157399988,0cyclictest0-21swapper/219:55:132
157399986,2cyclictest561-21nscd23:31:212
157399986,1cyclictest707-21snmpd20:08:422
157399986,1cyclictest61650irq/122-eno123:40:192
157399986,1cyclictest61650irq/122-eno123:25:532
157399986,1cyclictest61650irq/122-eno123:05:152
157399986,1cyclictest61650irq/122-eno122:55:002
157399986,1cyclictest61650irq/122-eno121:38:452
157399986,1cyclictest61650irq/122-eno100:29:592
157399985,1cyclictest61650irq/122-eno100:20:422
157399981,5cyclictest7890-21apt-get23:55:102
157399980,6cyclictest0-21swapper/223:50:122
157379982,5cyclictest21-21ksoftirqd/121:59:501
157379980,3cyclictest0-21swapper/123:49:591
157369987,1cyclictest9-21ksoftirqd/019:19:320
157369986,1cyclictest9-21ksoftirqd/021:19:210
157369986,1cyclictest9-21ksoftirqd/020:30:010
157369986,1cyclictest707-21snmpd23:51:020
157369986,1cyclictest707-21snmpd22:36:210
157369986,1cyclictest707-21snmpd20:40:310
157369983,5cyclictest30015-21latency_hist23:00:000
157369983,4cyclictest23970-21sh22:50:200
157369982,3cyclictest28240-21perf19:35:010
157369982,1cyclictest18936-21ssh22:04:060
157369981,6cyclictest11792-21apt-get00:00:110
157369980,8cyclictest0-21swapper/022:16:340
157369980,1cyclictest32199-21ssh23:44:390
157369980,1cyclictest25793-21ssh22:11:530
157479976,1cyclictest35-21ksoftirqd/319:40:013
157479975,1cyclictest707-21snmpd22:51:153
157479975,1cyclictest707-21snmpd22:15:593
157479975,1cyclictest707-21snmpd20:26:043
157479975,1cyclictest707-21snmpd19:50:503
157479975,1cyclictest707-21snmpd19:23:183
157479975,1cyclictest707-21snmpd19:16:193
157479975,1cyclictest707-21snmpd00:26:213
157479975,1cyclictest5018-21ssh00:31:453
157479975,1cyclictest2871-21ssh23:47:383
157479975,1cyclictest2840-21ntpq23:05:173
157479973,4cyclictest18099-21munin-node00:39:293
157479972,1cyclictest10466-21ssh23:57:233
157479971,5cyclictest8595-21diskmemload22:10:593
157479970,6cyclictest8595-21diskmemload21:43:333
157479970,4cyclictest0-21swapper/323:28:043
157399976,1cyclictest61650irq/122-eno123:11:522
157399976,1cyclictest61650irq/122-eno122:17:342
157399976,1cyclictest61650irq/122-eno122:03:392
157399976,1cyclictest61650irq/122-eno121:25:122
157399976,1cyclictest61650irq/122-eno121:20:112
157399976,1cyclictest61650irq/122-eno119:22:382
157399976,1cyclictest61650irq/122-eno100:13:142
157399976,0cyclictest61650irq/122-eno123:20:112
157399976,0cyclictest61650irq/122-eno121:10:142
157399976,0cyclictest61650irq/122-eno119:40:132
157399976,0cyclictest61650irq/122-eno100:35:142
157399976,0cyclictest61650irq/122-eno100:15:122
157399975,1cyclictest707-21snmpd20:44:472
157399975,1cyclictest707-21snmpd20:25:392
157399975,1cyclictest61650irq/122-eno123:00:122
157399975,1cyclictest61650irq/122-eno123:00:002
157399975,1cyclictest61650irq/122-eno122:40:132
157399975,1cyclictest61650irq/122-eno100:05:152
157399973,3cyclictest23716-21/usr/sbin/munin19:25:172
157399973,2cyclictest240-21systemd-journal21:09:072
157399971,5cyclictest23425-21apt-get22:10:112
157399970,1cyclictest0-21swapper/219:53:302
157399970,1cyclictest0-21swapper/219:45:352
157399970,1cyclictest0-21swapper/219:10:122
157399970,0cyclictest0-21swapper/220:10:292
157379971,6cyclictest0-21swapper/122:48:151
157379971,6cyclictest0-21swapper/119:42:301
157379971,1cyclictest0-21swapper/100:25:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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