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2026-03-19 - 08:48
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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 Thu Mar 19, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
76142201160,27sleep20-21swapper/219:07:252
75952200160,26sleep30-21swapper/319:07:113
75012198159,26sleep10-21swapper/119:05:561
77262196142,42sleep00-21swapper/019:08:530
297462450,0sleep00-21swapper/000:31:520
790899120,12cyclictest0-21swapper/122:35:111
790799120,12cyclictest0-21swapper/019:55:100
790799120,0cyclictest0-21swapper/000:00:120
7914991111,0cyclictest0-21swapper/222:15:132
7914991110,1cyclictest28-21ksoftirqd/221:15:002
790799110,9cyclictest931-21diskmemload22:30:120
792299108,1cyclictest35-21ksoftirqd/323:45:003
792299100,4cyclictest0-21swapper/322:30:113
791499109,1cyclictest28-21ksoftirqd/222:05:012
791499104,5cyclictest21416-21kworker/u8:222:28:272
791499100,8cyclictest32455-21kworker/u8:122:30:432
790799105,5cyclictest9375-21/usr/sbin/munin23:25:150
790799102,4cyclictest10294-21cat19:15:010
170022100,1sleep3931-21diskmemload21:29:583
79229996,2cyclictest707-21snmpd00:37:113
79229990,4cyclictest31245-21apt-get21:05:123
79149998,1cyclictest28-21ksoftirqd/221:00:002
79149998,1cyclictest28-21ksoftirqd/219:20:012
79149990,9cyclictest0-21swapper/223:37:332
79079997,1cyclictest9-21ksoftirqd/019:29:590
79079994,4cyclictest0-21swapper/021:45:180
79079994,1cyclictest25574-21df23:45:120
27280290,1sleep30-21swapper/322:24:043
79229986,1cyclictest707-21snmpd23:26:503
79229986,1cyclictest707-21snmpd23:20:243
79229986,1cyclictest707-21snmpd22:53:133
79229986,1cyclictest707-21snmpd22:12:253
79229986,1cyclictest707-21snmpd22:09:003
79229986,1cyclictest707-21snmpd22:08:593
79229986,1cyclictest707-21snmpd22:02:483
79229986,1cyclictest707-21snmpd21:45:243
79229986,1cyclictest707-21snmpd21:42:233
79229986,1cyclictest707-21snmpd20:50:583
79229986,1cyclictest707-21snmpd20:38:103
79229986,1cyclictest707-21snmpd00:06:253
79229986,1cyclictest35-21ksoftirqd/320:00:133
79229983,4cyclictest2482-1kworker/u9:123:56:203
79229980,5cyclictest0-21swapper/322:25:123
79229980,3cyclictest0-21swapper/300:10:103
79149987,1cyclictest28-21ksoftirqd/222:55:012
79149987,1cyclictest28-21ksoftirqd/219:50:002
79149987,1cyclictest0-21swapper/221:50:162
79149986,1cyclictest707-21snmpd23:49:102
79149986,1cyclictest61650irq/122-eno123:55:172
79149986,1cyclictest61650irq/122-eno123:50:122
79149986,1cyclictest61650irq/122-eno122:50:012
79149986,1cyclictest61650irq/122-eno122:20:172
79149986,1cyclictest61650irq/122-eno121:20:242
79149986,1cyclictest28-21ksoftirqd/221:20:012
79149986,1cyclictest28-21ksoftirqd/200:05:162
79149984,2cyclictest240-21systemd-journal00:15:002
79149982,5cyclictest15814-21apt-get00:15:092
79149980,5cyclictest0-21swapper/220:35:122
79149980,3cyclictest0-21swapper/220:30:092
79149980,2cyclictest0-21swapper/221:05:122
79089980,1cyclictest0-21swapper/122:55:191
79089980,1cyclictest0-21swapper/121:40:111
79079987,1cyclictest9-21ksoftirqd/022:10:010
79079987,1cyclictest9-21ksoftirqd/022:10:010
79079987,1cyclictest9-21ksoftirqd/019:18:360
79079987,1cyclictest6482-21ssh21:56:140
79079987,1cyclictest4685-21ssh21:14:440
79079987,1cyclictest25342-21ssh23:03:050
79079987,1cyclictest22802-21ssh23:40:230
79079982,5cyclictest981-21perf21:10:010
79079981,6cyclictest23397-21ssh22:19:020
6567280,0sleep30-21swapper/300:01:453
27862280,0sleep30-21swapper/323:47:593
79229975,1cyclictest707-21snmpd23:08:283
79229975,1cyclictest707-21snmpd22:19:223
79229975,1cyclictest707-21snmpd21:39:053
79229975,1cyclictest707-21snmpd20:47:043
79229975,1cyclictest707-21snmpd20:33:033
79229975,1cyclictest707-21snmpd20:06:353
79229975,1cyclictest707-21snmpd19:50:263
79229975,1cyclictest707-21snmpd19:36:503
79229975,1cyclictest707-21snmpd19:31:473
79229975,1cyclictest707-21snmpd19:15:553
79229975,1cyclictest707-21snmpd00:31:283
79229975,1cyclictest707-21snmpd00:20:033
79229975,1cyclictest707-21snmpd00:17:223
79229971,3cyclictest0-21swapper/320:10:103
79229971,2cyclictest0-21swapper/322:56:233
79149976,1cyclictest61650irq/122-eno123:44:212
79149976,1cyclictest61650irq/122-eno123:28:282
79149976,1cyclictest61650irq/122-eno123:20:532
79149976,1cyclictest61650irq/122-eno122:10:182
79149976,1cyclictest61650irq/122-eno121:30:152
79149976,1cyclictest61650irq/122-eno121:25:182
79149976,1cyclictest61650irq/122-eno100:35:122
79149976,1cyclictest61650irq/122-eno100:20:062
79149976,1cyclictest61650irq/122-eno100:02:262
79149975,1cyclictest707-21snmpd20:26:422
79149975,1cyclictest61650irq/122-eno121:55:162
79149975,1cyclictest61650irq/122-eno121:35:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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