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2026-05-30 - 02:46
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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 Sat May 30, 2026 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314102233159,25sleep20-21swapper/219:07:092
314432229159,26sleep30-21swapper/319:07:353
315572206144,20sleep00-21swapper/019:09:050
315682201162,26sleep10-21swapper/119:09:141
310442760,0sleep10-21swapper/123:25:211
170872150,0sleep10-21swapper/100:35:141
3171699140,1cyclictest24559-21diskmemload00:20:172
3171699116,4cyclictest1029-21snmpd20:50:262
31716991110,1cyclictest28-21ksoftirqd/219:20:002
3171699111,2cyclictest0-21swapper/222:48:592
3171699111,1cyclictest18773-21timerwakeupswit22:25:192
294232110,0sleep024559-21diskmemload00:08:030
217102110,0sleep30-21swapper/321:46:023
3171699108,1cyclictest28-21ksoftirqd/220:29:592
3171699105,4cyclictest61650irq/122-eno123:27:162
3171699103,1cyclictest240-21systemd-journal22:10:002
31716991010,0cyclictest0-21swapper/222:10:102
3171699101,1cyclictest21886-21aten_r1power_en23:15:102
3171699101,1cyclictest0-21swapper/219:20:122
3171699100,2cyclictest0-21swapper/222:31:252
3171699100,2cyclictest0-21swapper/221:52:022
31702991010,0cyclictest9-21ksoftirqd/022:58:120
3170299101,4cyclictest13212-21cat22:19:590
3170299100,6cyclictest0-21swapper/023:10:000
118742100,1sleep2240-21systemd-journal21:35:002
32301290,0sleep00-21swapper/021:19:530
317249991,7cyclictest1653-21munin-node00:32:333
317249990,3cyclictest32495-21df22:45:133
317249990,2cyclictest0-21swapper/321:50:113
317169996,3cyclictest61650irq/122-eno123:02:572
317169995,3cyclictest61650irq/122-eno119:35:202
317169994,1cyclictest61650irq/122-eno123:05:512
317169994,0cyclictest24559-21diskmemload21:45:182
317169993,1cyclictest27263-21ssh23:20:182
317169993,1cyclictest25409-21hwlatdetect22:35:162
317169993,1cyclictest11206-21ssh00:25:402
317169993,1cyclictest0-21swapper/223:50:192
317169992,6cyclictest61650irq/122-eno121:15:142
317169991,5cyclictest0-21swapper/223:32:252
317169991,1cyclictest28146-21sort21:55:132
317169990,8cyclictest0-21swapper/200:01:542
317169990,3cyclictest0-21swapper/200:05:132
317169990,2cyclictest240-21systemd-journal23:45:002
317169990,2cyclictest240-21systemd-journal19:50:012
317169990,2cyclictest0-21swapper/223:58:032
317169990,1cyclictest240-21systemd-journal23:50:002
317169990,1cyclictest240-21systemd-journal20:20:002
317169990,1cyclictest240-21systemd-journal20:15:002
317169990,1cyclictest240-21systemd-journal00:35:012
317169990,1cyclictest240-21systemd-journal00:14:592
317169990,1cyclictest0-21swapper/221:10:112
317169990,1cyclictest0-21swapper/220:40:122
317029997,1cyclictest9-21ksoftirqd/020:40:000
317249986,1cyclictest6932-21irqstats22:10:153
317249986,1cyclictest1029-21snmpd23:45:523
317249986,1cyclictest1029-21snmpd22:27:473
317249986,1cyclictest1029-21snmpd22:15:583
317249986,1cyclictest1029-21snmpd21:15:283
317249986,1cyclictest1029-21snmpd20:55:263
317249986,1cyclictest1029-21snmpd19:41:053
317249984,3cyclictest13650irq/124-ahci[0020:11:223
317249981,5cyclictest561-21nscd22:55:563
317249980,4cyclictest4245-21apt-get23:35:123
317169986,2cyclictest61650irq/122-eno122:50:032
317169986,2cyclictest61650irq/122-eno122:43:092
317169986,2cyclictest61650irq/122-eno122:17:122
317169986,1cyclictest61650irq/122-eno121:35:212
317169986,1cyclictest4732-21ssh21:25:132
317169985,3cyclictest61650irq/122-eno100:16:592
317169984,1cyclictest61650irq/122-eno122:21:242
317169983,1cyclictest18463-21gltestperf20:55:142
317169982,4cyclictest16003-21apt-get21:40:112
317169982,1cyclictest6749-21hwlatdetect20:30:152
317169982,1cyclictest31249-21tr22:00:132
317169982,1cyclictest19303-21cut19:50:012
317169982,1cyclictest18711-21sh23:10:132
317169982,0cyclictest0-21swapper/219:55:102
317169980,7cyclictest0-21swapper/221:20:332
317169980,4cyclictest13315-21cut20:45:132
317169980,3cyclictest0-21swapper/222:55:142
317169980,1cyclictest240-21systemd-journal23:40:012
317169980,1cyclictest240-21systemd-journal21:00:012
317169980,1cyclictest240-21systemd-journal00:39:592
317139981,4cyclictest0-21swapper/123:46:491
317029987,1cyclictest9-21ksoftirqd/023:59:590
317029987,1cyclictest9-21ksoftirqd/023:40:010
317029986,1cyclictest24817-21/usr/sbin/munin21:10:150
317029986,1cyclictest1029-21snmpd23:53:470
317029986,1cyclictest1029-21snmpd21:45:500
317029986,1cyclictest1029-21snmpd20:03:450
317029986,1cyclictest1029-21snmpd19:54:150
317029982,5cyclictest8210-21/usr/sbin/munin21:30:140
317029981,4cyclictest19450-21ssh21:45:000
317029981,1cyclictest20169-21ssh22:28:520
317029980,7cyclictest28039-21head21:55:140
317029980,7cyclictest16616-21apt-config19:45:000
317029980,4cyclictest0-21swapper/000:30:030
317029980,1cyclictest5377-21ssh22:09:020
317029980,1cyclictest14143-21ssh21:35:480
17451280,1sleep30-21swapper/323:08:543
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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