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2026-04-21 - 01:48
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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 Tue Apr 21, 2026 00:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2525825080,5sleep20-21swapper/219:05:122
270452201161,26sleep30-21swapper/319:06:273
272652199161,24sleep00-21swapper/019:09:180
271892196158,25sleep10-21swapper/119:08:171
25972760,1sleep10-21swapper/122:09:591
139732600,0sleep10-21swapper/121:40:201
52222590,2sleep121-21ksoftirqd/119:30:001
239402550,0sleep30-21swapper/300:01:163
150712160,0sleep00-21swapper/023:07:220
2740499132,5cyclictest20651-21latency_hist21:10:000
27404991310,1cyclictest240-21systemd-journal00:25:010
27430991111,0cyclictest35-21ksoftirqd/321:45:203
27430991111,0cyclictest35-21ksoftirqd/300:20:003
27430991111,0cyclictest35-21ksoftirqd/300:19:593
27404991110,1cyclictest9-21ksoftirqd/022:30:010
27404991110,1cyclictest9-21ksoftirqd/022:30:010
27404991110,1cyclictest9-21ksoftirqd/021:15:000
2742299109,1cyclictest28-21ksoftirqd/222:21:352
2742299109,1cyclictest28-21ksoftirqd/220:24:592
27422991010,0cyclictest0-21swapper/221:50:182
2740499109,1cyclictest9-21ksoftirqd/023:15:150
2740499109,1cyclictest9-21ksoftirqd/020:50:010
2740499108,1cyclictest9-21ksoftirqd/020:05:000
2740499102,4cyclictest32583-21latency_hist21:25:000
274309999,0cyclictest35-21ksoftirqd/323:25:013
274309999,0cyclictest35-21ksoftirqd/322:10:003
274309999,0cyclictest35-21ksoftirqd/320:30:003
274309998,1cyclictest35-21ksoftirqd/323:05:003
274309998,1cyclictest35-21ksoftirqd/319:45:013
274309998,1cyclictest35-21ksoftirqd/300:39:343
274309994,3cyclictest33712sleep322:52:043
274309992,6cyclictest4633-21apt-get00:20:113
274309990,7cyclictest17998-21snmpd22:18:383
274309990,6cyclictest31257-21perf20:25:003
274229990,9cyclictest0-21swapper/222:25:402
274229990,9cyclictest0-21swapper/222:25:392
274229990,7cyclictest27859-21kworker/u8:222:50:092
274049998,1cyclictest9-21ksoftirqd/022:40:160
274049998,1cyclictest9-21ksoftirqd/022:32:590
274049998,1cyclictest9-21ksoftirqd/022:32:580
274049998,1cyclictest9-21ksoftirqd/022:20:140
274049998,1cyclictest561-21nscd00:05:540
274049997,1cyclictest9-21ksoftirqd/000:15:170
274049997,1cyclictest9-21ksoftirqd/000:15:170
274049992,4cyclictest18348-21latency_hist21:05:000
274049990,7cyclictest20650-21diskmemload00:03:090
274309987,1cyclictest35-21ksoftirqd/322:40:013
274309987,1cyclictest35-21ksoftirqd/320:40:013
274309986,1cyclictest17998-21snmpd23:43:103
274309981,4cyclictest27610-21apt-get19:10:123
274309980,5cyclictest0-21swapper/321:19:573
274229986,1cyclictest61650irq/122-eno123:35:122
274229986,1cyclictest61650irq/122-eno123:20:002
274229986,1cyclictest61650irq/122-eno123:05:202
274229986,1cyclictest61650irq/122-eno123:00:122
274229986,1cyclictest61650irq/122-eno122:35:142
274229986,1cyclictest61650irq/122-eno119:50:162
274229986,1cyclictest29542-21ssh00:10:122
274229986,1cyclictest26511-21cat00:05:152
274229986,1cyclictest17998-21snmpd23:21:582
274229986,1cyclictest17998-21snmpd19:18:262
274229984,2cyclictest240-21systemd-journal22:20:002
274229982,3cyclictest6778-21kworker/u8:000:00:592
274229981,4cyclictest0-21swapper/220:00:122
274229980,7cyclictest12402-21apt-get19:45:092
274229980,4cyclictest16343-21apt-get23:10:122
274169980,5cyclictest0-21swapper/123:50:111
274049987,1cyclictest9-21ksoftirqd/023:30:160
274049987,1cyclictest9-21ksoftirqd/023:25:130
274049987,1cyclictest9-21ksoftirqd/022:55:140
274049986,0cyclictest0-21swapper/019:35:190
274049986,0cyclictest0-21swapper/019:35:190
274049982,5cyclictest31308-21perf20:25:000
274049981,4cyclictest10153-21latency_hist23:44:590
274049980,7cyclictest962-21apt-get22:50:110
274049980,7cyclictest12678-21df00:30:120
12488280,1sleep30-21swapper/321:40:023
274309977,0cyclictest35-21ksoftirqd/322:20:143
274309976,1cyclictest35-21ksoftirqd/323:20:003
274309976,1cyclictest35-21ksoftirqd/323:15:003
274309976,1cyclictest35-21ksoftirqd/323:10:003
274309976,1cyclictest17998-21snmpd23:29:493
274309976,1cyclictest17998-21snmpd22:40:053
274309975,1cyclictest35-21ksoftirqd/321:30:013
274309975,1cyclictest35-21ksoftirqd/319:35:003
274309971,3cyclictest29762-21munin-node19:15:003
274309970,6cyclictest16072-21ssh22:25:273
274309970,6cyclictest16072-21ssh22:25:273
274309970,5cyclictest17998-21snmpd23:55:553
274309970,2cyclictest0-21swapper/323:35:413
274229976,1cyclictest61650irq/122-eno120:15:202
274229976,1cyclictest61650irq/122-eno119:25:182
274229976,1cyclictest61650irq/122-eno100:28:552
274229976,1cyclictest17149-21ntp_states00:35:182
274229976,1cyclictest1344-21cat21:25:162
274229976,0cyclictest61650irq/122-eno121:15:112
274229975,1cyclictest61650irq/122-eno122:45:152
274229975,1cyclictest61650irq/122-eno122:00:152
274229975,1cyclictest61650irq/122-eno121:45:012
274229975,1cyclictest61650irq/122-eno121:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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