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2026-06-15 - 06:54
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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 rackbslot7.osadl.org (updated Mon Jun 15, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
473822280,21sleep30-21swapper/318:54:233
473822280,21sleep30-21swapper/318:54:233
5241219714,160sleep04607-21/usr/sbin/munin18:54:460
5241219714,160sleep04607-21/usr/sbin/munin18:54:460
60859911850,61cyclictest297-21systemd-logind21:29:040
5287211713,68sleep15327-21/usr/sbin/munin18:54:471
5287211713,68sleep15327-21/usr/sbin/munin18:54:471
60859911235,9cyclictest0-21swapper/021:14:330
6085991113,28cyclictest11850-21timerandwakeup22:44:400
6085991112,22cyclictest8345-21apt-get20:44:150
6101991109,78cyclictest20255-21diskmemload23:54:472
60859911032,12cyclictest0-21swapper/020:54:410
6085991093,26cyclictest29375-21awk23:14:360
6085991064,45cyclictest5838-21ntpq00:24:320
60859910634,11cyclictest0-21swapper/022:44:030
61019910555,41cyclictest0-21swapper/223:04:132
61019910555,41cyclictest0-21swapper/223:04:132
6085991053,24cyclictest25485-21apt-get21:19:340
60859910530,7cyclictest0-21swapper/022:29:070
60859910442,55cyclictest14220-21sh22:49:250
6085991043,34cyclictest19688-21apt-config23:54:060
6085991034,36cyclictest22858-21ls23:04:200
6085991034,36cyclictest22858-21ls23:04:200
60859910338,8cyclictest0-21swapper/020:04:400
60859910336,8cyclictest0-21swapper/022:34:360
6085991033,25cyclictest12317-21taskset21:51:320
60859910241,50cyclictest0-21swapper/022:04:070
6085991023,36cyclictest352-21runrttasks21:06:180
6085991023,36cyclictest352-21runrttasks21:06:180
6085991022,40cyclictest4611-21ssh21:39:170
60859910136,8cyclictest0-21swapper/000:09:310
6085991013,32cyclictest7746-21grep19:04:060
6085991013,32cyclictest7746-21grep19:04:060
60859910037,10cyclictest0-21swapper/019:34:330
6085991003,36cyclictest3039-21sendmail_mailqu00:19:360
6085991003,33cyclictest7693-21cstates21:44:200
6085991003,27cyclictest22236-21latency_hist22:09:050
6085991002,32cyclictest31690-21proc_pri20:14:360
6085991002,32cyclictest31690-21proc_pri20:14:360
608599993,33cyclictest17020-21wc19:29:290
608599993,33cyclictest17020-21wc19:29:290
6085999931,13cyclictest0-21swapper/019:29:040
6085999931,13cyclictest0-21swapper/019:29:040
608599985,27cyclictest20044-21/usr/sbin/munin23:55:400
608599984,33cyclictest6167-21uptime23:29:410
608599984,33cyclictest6167-21uptime23:29:410
608599984,27cyclictest26316-21timerandwakeup22:14:390
608599983,36cyclictest2346-21tr22:29:290
608599983,36cyclictest1-21systemd20:44:040
608599983,34cyclictest25704-21/usr/sbin/munin23:09:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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