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2026-04-19 - 09:39
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot8.osadl.org (updated Sun Apr 19, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228952315289,17sleep20-21swapper/219:08:272
229472289228,20sleep10-21swapper/119:09:051
229412259231,18sleep00-21swapper/019:09:000
210402257230,18sleep30-21swapper/319:05:053
41472630,0sleep00-21swapper/022:03:170
56852600,0sleep00-21swapper/022:43:110
301202600,0sleep20-21swapper/221:40:002
47302580,1sleep30-21swapper/322:03:453
18652580,0sleep30-21swapper/300:19:153
30312570,0sleep10-21swapper/120:45:181
22972560,0sleep20-21swapper/222:01:522
165172550,0sleep00-21swapper/023:48:520
165172550,0sleep00-21swapper/023:48:520
3602530,0sleep00-21swapper/021:21:290
193472530,0sleep20-21swapper/221:13:492
105132520,0sleep10-21swapper/121:47:181
105132520,0sleep10-21swapper/121:47:181
210752210,0sleep00-21swapper/021:34:310
225312190,0sleep00-21swapper/023:52:090
219882160,0sleep20-21swapper/221:15:142
217542160,0sleep1658-21snmpd21:15:131
200222150,0sleep10-21swapper/121:14:201
191752150,0sleep00-21swapper/022:31:330
165002150,0sleep00-21swapper/023:29:150
207032140,0sleep30-21swapper/321:34:133
229352130,0sleep00-21swapper/021:55:130
2314999110,10cyclictest11729-21dump-pmu-power19:55:022
19422110,0sleep20-21swapper/223:59:562
45112100,0sleep10-21swapper/123:40:581
231439992,4cyclictest11112-21turbostat00:24:590
231559987,1cyclictest34-21ksoftirqd/322:15:013
231559984,3cyclictest658-21snmpd23:17:543
231499987,1cyclictest28-21ksoftirqd/222:50:002
231499987,1cyclictest28-21ksoftirqd/220:20:002
231459984,3cyclictest275-21systemd-journal20:13:551
231439981,4cyclictest19345-21awk00:30:000
11664280,1sleep20-21swapper/221:05:172
231559976,1cyclictest34-21ksoftirqd/319:15:023
231559974,2cyclictest275-21systemd-journal23:06:233
231559973,3cyclictest658-21snmpd19:50:443
231559973,3cyclictest275-21systemd-journal23:49:553
231559973,3cyclictest275-21systemd-journal23:49:553
231559973,3cyclictest275-21systemd-journal23:25:333
231559973,3cyclictest275-21systemd-journal20:02:293
231559973,3cyclictest275-21systemd-journal00:13:013
231499973,3cyclictest14541-21apt21:50:112
231499971,3cyclictest6032-21dump-pmu-power20:55:012
231499971,3cyclictest3810-21munin-run20:50:012
231459973,3cyclictest658-21snmpd22:02:301
231459973,3cyclictest24787-11brltty20:52:021
231459973,3cyclictest1-21systemd19:15:191
231459973,3cyclictest1205-21diskstats19:30:151
231459970,7cyclictest0-21swapper/123:47:291
231459970,7cyclictest0-21swapper/123:47:291
231439977,0cyclictest0-21swapper/022:50:100
231439973,3cyclictest658-21snmpd20:12:060
231439973,3cyclictest658-21snmpd00:13:270
231439973,3cyclictest275-21systemd-journal20:35:220
231439973,3cyclictest275-21systemd-journal20:28:560
231439973,3cyclictest27159-21ntpq19:15:170
231439972,3cyclictest275-21systemd-journal19:34:570
28038260,0sleep00-21swapper/023:35:280
231559966,0cyclictest0-21swapper/323:36:553
231559966,0cyclictest0-21swapper/300:37:183
231559965,1cyclictest0-21swapper/321:25:403
231559963,2cyclictest7406-21cut21:45:183
231559963,2cyclictest7406-21cut21:45:183
231559963,2cyclictest658-21snmpd22:29:123
231559963,2cyclictest5355-21sh00:20:333
231559963,2cyclictest504-21dbus-daemon23:24:193
231559963,2cyclictest504-21dbus-daemon20:34:573
231559963,2cyclictest4261-21sh22:42:043
231559963,2cyclictest29297-21sh23:56:013
231559963,2cyclictest2834-21rm22:21:473
231559963,2cyclictest275-21systemd-journal22:53:563
231559963,2cyclictest275-21systemd-journal21:51:163
231559963,2cyclictest25001-21sshd00:32:593
231559963,2cyclictest21860-21grep21:15:133
231559963,2cyclictest18756-21cat23:30:153
231559963,2cyclictest1371-21rm21:41:343
231559963,1cyclictest0-21swapper/322:05:383
231559963,1cyclictest0-21swapper/300:25:393
231559962,3cyclictest658-21snmpd23:42:233
231559962,3cyclictest658-21snmpd22:45:403
231559962,3cyclictest658-21snmpd22:37:343
231559962,3cyclictest658-21snmpd21:57:153
231559962,3cyclictest658-21snmpd21:35:013
231559962,3cyclictest658-21snmpd21:03:013
231559962,3cyclictest658-21snmpd20:40:033
231559962,3cyclictest658-21snmpd19:56:573
231559962,3cyclictest658-21snmpd19:45:043
231559962,3cyclictest658-21snmpd19:45:043
231559962,3cyclictest658-21snmpd19:41:193
231559962,3cyclictest658-21snmpd19:35:433
231559962,3cyclictest658-21snmpd19:27:523
231559962,3cyclictest658-21snmpd00:05:133
231559962,3cyclictest4062-21apt-get20:50:123
231559962,3cyclictest275-21systemd-journal19:22:293
231559962,3cyclictest275-21systemd-journal19:17:223
231559962,3cyclictest25856-21fw_packets20:25:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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