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2025-09-16 - 09:05
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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 50 highest latencies:
System rackeslot2.osadl.org (updated Tue Sep 16, 2025 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
124162121020,1sleep00-21swapper/021:54:410
10759422320,1sleep00-21swapper/019:59:350
1014789992915,9cyclictest0-21swapper/000:10:010
101478999274,20cyclictest1339525-21unin-run22:50:020
1014789992717,6cyclictest1389067-21kthreadcore23:19:350
101478999259,11cyclictest1304172-21/usr/sbin/munin22:30:010
101478999256,14cyclictest0-21swapper/022:23:500
101478999252,10cyclictest1162892-21diskmemload21:11:230
1014789992512,12cyclictest1457636-21cstates23:59:300
101478999251,14cyclictest1357630-21taskset23:00:190
101478999251,13cyclictest1367105-21ssh23:06:040
1014789992510,13cyclictest0-21swapper/000:34:330
101478999250,14cyclictest1321051-21python322:39:410
1014789992415,8cyclictest1348309-21sh22:55:010
101478999241,17cyclictest1304370-21taskset22:30:050
101478999241,13cyclictest1500104-21runrttasks00:22:350
101478999241,12cyclictest1224998-21systemd-run21:45:010
101478999241,12cyclictest1066227-21taskset19:52:550
101478999241,12cyclictest0-21swapper/021:19:350
101478999240,19cyclictest1182921-21sh21:23:100
101478999240,14cyclictest1508462-21taskset00:26:470
101478999240,14cyclictest1395354-21taskset23:23:590
101478999240,14cyclictest1270057-21ssh22:11:360
101478999240,14cyclictest1053640-21taskset19:40:130
101478999240,13cyclictest2004-21runrttasks00:15:540
101478999240,13cyclictest1463930-21taskset00:01:020
101478999240,13cyclictest1162892-21diskmemload21:45:450
101478999240,12cyclictest1243112-21sh21:55:440
101478999234,10cyclictest1252295-21sh22:01:150
101478999232,11cyclictest0-21swapper/000:35:040
101478999232,11cyclictest0-21swapper/000:35:040
101478999231,17cyclictest1447104-21taskset23:52:210
101478999231,12cyclictest1402261-21ssh23:25:590
101478999231,12cyclictest1132641-21taskset20:45:090
101478999230,2cyclictest771469-21kworker/u16:1+rpciod22:41:570
101478999230,1cyclictest1225318-21kworker/u16:2+rpciod22:07:460
101478999230,18cyclictest1208769-21seq21:37:100
101478999230,18cyclictest1023574-21taskset19:18:050
101478999230,18cyclictest1015079-21taskset19:10:390
101478999230,14cyclictest1420832-21taskset23:37:300
101478999230,13cyclictest2004-21runrttasks22:15:470
101478999230,13cyclictest2004-21runrttasks20:03:100
101478999230,13cyclictest1481833-21taskset00:11:280
101478999230,13cyclictest1437936-21taskset23:46:480
101478999230,13cyclictest1429033-21taskset23:41:350
101478999230,13cyclictest1429033-21taskset23:41:350
101478999230,13cyclictest1377789-21taskset23:14:010
101478999230,13cyclictest1351067-21sh22:59:050
101478999230,13cyclictest1198682-21taskset21:30:130
101478999230,13cyclictest1189986-21taskset21:25:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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