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2026-08-14 - 02:51
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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 Fri Aug 14, 2026 00:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
53802207167,26sleep30-21swapper/319:08:303
54402204150,21sleep10-21swapper/119:09:171
51712201162,26sleep20-21swapper/219:05:482
53622198160,24sleep00-21swapper/019:08:140
38132590,0sleep20-21swapper/223:33:182
246212570,0sleep00-21swapper/000:02:280
5626991312,0cyclictest35-21ksoftirqd/322:15:013
5626991211,1cyclictest35-21ksoftirqd/300:15:003
5626991210,1cyclictest35-21ksoftirqd/320:00:003
561699120,0cyclictest0-21swapper/222:10:222
559799120,12cyclictest0-21swapper/121:49:101
5585991211,0cyclictest9-21ksoftirqd/022:35:000
5626991110,1cyclictest35-21ksoftirqd/323:15:003
562699110,10cyclictest11301-21snmpd20:00:123
561699119,1cyclictest28-21ksoftirqd/219:15:002
558599113,4cyclictest7092-21perf00:25:010
558599112,4cyclictest13576-21latency_hist19:25:000
558599111,4cyclictest17145-21apt-get20:40:110
562699109,1cyclictest35-21ksoftirqd/323:30:133
562699109,1cyclictest35-21ksoftirqd/321:15:013
561699108,1cyclictest28-21ksoftirqd/220:30:002
5597991010,0cyclictest0-21swapper/119:16:161
558599109,1cyclictest9-21ksoftirqd/023:05:130
558599109,1cyclictest9-21ksoftirqd/022:10:010
558599108,1cyclictest9-21ksoftirqd/022:10:130
558599108,1cyclictest9-21ksoftirqd/021:45:150
5585991010,0cyclictest9-21ksoftirqd/021:20:200
56269999,0cyclictest35-21ksoftirqd/322:20:003
56269999,0cyclictest35-21ksoftirqd/321:55:003
56269998,1cyclictest35-21ksoftirqd/322:25:003
56269997,1cyclictest35-21ksoftirqd/300:35:003
56169999,0cyclictest0-21swapper/221:05:152
55979990,4cyclictest0-21swapper/119:50:121
55859999,0cyclictest9-21ksoftirqd/022:30:130
55859999,0cyclictest9-21ksoftirqd/021:30:000
55859997,1cyclictest9-21ksoftirqd/022:45:140
55859997,1cyclictest9-21ksoftirqd/000:00:000
15928290,0sleep10-21swapper/121:31:501
11633290,0sleep10-21swapper/122:11:111
56269988,0cyclictest35-21ksoftirqd/322:55:013
56269988,0cyclictest35-21ksoftirqd/321:50:003
56269988,0cyclictest35-21ksoftirqd/320:10:003
56269987,1cyclictest35-21ksoftirqd/323:15:143
56269987,1cyclictest35-21ksoftirqd/323:00:013
56269987,1cyclictest35-21ksoftirqd/321:20:013
56269987,1cyclictest35-21ksoftirqd/320:50:003
56269987,1cyclictest35-21ksoftirqd/319:45:003
56269987,1cyclictest35-21ksoftirqd/300:10:003
56269980,5cyclictest0-21swapper/321:55:183
56169986,1cyclictest28-21ksoftirqd/220:45:002
56169986,1cyclictest11301-21snmpd22:46:312
56169986,1cyclictest11301-21snmpd19:29:312
56169983,4cyclictest7938-21munin-node22:31:152
56169981,4cyclictest15169-21apt-get23:50:112
56169980,4cyclictest0-21swapper/223:20:122
55979980,4cyclictest0-21swapper/123:10:191
55979980,4cyclictest0-21swapper/121:15:441
55859988,0cyclictest9-21ksoftirqd/023:05:000
55859987,1cyclictest9364-21ssh23:40:170
55859987,1cyclictest9-21ksoftirqd/019:45:010
55859987,1cyclictest23427-21ssh21:42:300
55859987,1cyclictest11301-21snmpd20:31:190
55859986,1cyclictest9-21ksoftirqd/023:10:140
55859986,1cyclictest11301-21snmpd20:52:370
55859986,1cyclictest11301-21snmpd19:30:400
55859983,4cyclictest30484-21apt-get20:00:120
55859980,7cyclictest2777-21ssh00:17:400
55859980,7cyclictest2183-21ssh21:14:450
55859980,7cyclictest19676-21ssh22:24:280
55859980,0cyclictest0-21swapper/022:50:140
56269976,1cyclictest35-21ksoftirqd/323:45:003
56269976,1cyclictest35-21ksoftirqd/323:25:003
56269976,1cyclictest35-21ksoftirqd/319:35:003
56269976,1cyclictest24831-21ntpq22:30:183
56269976,1cyclictest11301-21snmpd21:21:353
56269976,1cyclictest11301-21snmpd19:27:523
56269976,1cyclictest11301-21snmpd19:17:283
56269976,1cyclictest11301-21snmpd00:20:133
56269975,1cyclictest946-21ssh22:42:433
56269975,1cyclictest11301-21snmpd20:41:273
56269975,1cyclictest11301-21snmpd20:38:063
56269975,1cyclictest10352-21ssh00:29:243
56269974,1cyclictest240-21systemd-journal22:40:003
56269974,1cyclictest240-21systemd-journal22:05:003
56269974,1cyclictest240-21systemd-journal19:40:003
56269972,4cyclictest18664-21/usr/sbin/munin23:55:163
56269970,6cyclictest15605-1kworker/u9:221:34:393
56269970,5cyclictest0-21swapper/321:43:023
56169976,1cyclictest61650irq/122-eno123:15:142
56169976,1cyclictest61650irq/122-eno123:10:112
56169976,1cyclictest61650irq/122-eno122:42:242
56169976,1cyclictest61650irq/122-eno122:25:202
56169976,1cyclictest61650irq/122-eno122:07:182
56169976,1cyclictest61650irq/122-eno121:46:262
56169976,1cyclictest61650irq/122-eno119:45:312
56169976,1cyclictest61650irq/122-eno119:15:152
56169976,1cyclictest61650irq/122-eno100:20:312
56169976,1cyclictest61650irq/122-eno100:17:032
56169975,1cyclictest61650irq/122-eno123:40:172
56169975,1cyclictest61650irq/122-eno122:00:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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