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2026-06-06 - 17:57
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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 50 highest latencies:
System rackaslot8.osadl.org (updated Sat Jun 06, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116142272245,18sleep10-21swapper/119:09:011
116382271246,16sleep20-21swapper/219:09:182
114052265234,21sleep00-21swapper/019:06:230
115512261228,22sleep30-21swapper/319:08:153
94682660,0sleep00-21swapper/023:50:010
73742630,0sleep10-21swapper/122:50:121
67612580,0sleep10-21swapper/123:48:141
25592570,0sleep20-21swapper/223:25:412
195852560,0sleep10-21swapper/121:20:141
194262560,0sleep20-21swapper/222:56:542
61982550,0sleep00-21swapper/000:26:170
151942520,0sleep20-21swapper/200:31:502
158232510,0sleep10-21swapper/119:15:181
23352200,0sleep00-21swapper/000:24:410
291702180,0sleep20-21swapper/221:45:132
159972170,0sleep00-21swapper/021:17:470
258362160,0sleep00-21swapper/000:19:110
26412150,0sleep10-21swapper/122:08:041
248992150,0sleep10-21swapper/119:35:151
108242150,0sleep30-21swapper/323:11:083
79262130,0sleep10-21swapper/123:10:061
245772130,0sleep00-21swapper/022:01:260
292892100,0sleep20-21swapper/222:05:002
117999998,1cyclictest34-21ksoftirqd/300:20:013
117969992,4cyclictest3126-21apt20:00:002
25013280,0sleep00-21swapper/023:00:160
117969983,4cyclictest504-21dbus-daemon20:40:002
117969983,3cyclictest275-21systemd-journal21:10:002
117919983,4cyclictest0-21swapper/100:25:111
117919983,3cyclictest275-21systemd-journal23:22:471
117919980,7cyclictest576-21apt19:55:001
31250270,0sleep20-21swapper/221:26:472
14755270,0sleep10-21swapper/100:31:291
117999976,1cyclictest34-21ksoftirqd/323:50:003
117999975,1cyclictest34-21ksoftirqd/300:00:003
117999975,1cyclictest18129-21ssh23:55:103
117999975,1cyclictest13929-21runrttasks23:33:033
117999974,2cyclictest10127-21sshd22:51:063
117999973,3cyclictest658-21snmpd19:54:513
117999973,3cyclictest658-21snmpd00:05:103
117999973,3cyclictest275-21systemd-journal22:40:013
117999973,3cyclictest1-21systemd21:15:183
117969973,3cyclictest275-21systemd-journal20:10:322
117969973,3cyclictest275-21systemd-journal20:10:322
117919974,2cyclictest275-21systemd-journal21:10:001
117869976,1cyclictest12-21ksoftirqd/021:29:590
117869976,1cyclictest12-21ksoftirqd/019:20:010
117869973,3cyclictest658-21snmpd22:30:440
117869973,3cyclictest504-21dbus-daemon22:55:010
117869973,3cyclictest504-21dbus-daemon22:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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