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2025-03-18 - 15:37
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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 rack8slot4.osadl.org (updated Tue Mar 18, 2025 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33841472231171,20sleep00-21swapper/007:05:510
33861922223165,46sleep60-21swapper/607:07:266
33862552222166,44sleep40-21swapper/407:08:204
33862082219191,18sleep20-21swapper/207:07:382
33862632218190,17sleep30-21swapper/307:08:273
33841272215185,19sleep10-21swapper/107:05:361
33841022215187,17sleep50-21swapper/507:05:165
33863062212184,18sleep70-21swapper/707:09:047
338657499762,24cyclictest0-21swapper/712:13:257
338656899350,2cyclictest3542170-21apt12:30:014
338655899350,34cyclictest3542168-21latency_hist12:30:011
3386558993227,4cyclictest3479787-21latency_hist10:10:011
3386574993128,2cyclictest430883-21systemd-journal09:35:017
338657499310,30cyclictest0-21swapper/707:51:397
338657399310,30cyclictest3409125-21dpkg07:50:016
3386563993128,2cyclictest3524212-21munin-run11:50:003
338656299310,30cyclictest3469656-21systemd-run09:42:422
3386574993027,3cyclictest0-21swapper/711:40:007
338657499300,29cyclictest3503078-21cron11:00:017
338657499300,29cyclictest3494807-21apt-get10:41:377
338657399300,29cyclictest3533029-21sh12:10:016
338657399300,29cyclictest3455548-21idleruntime-cro09:15:016
338657399300,29cyclictest3455548-21idleruntime-cro09:15:016
3386568993028,1cyclictest3471487-21apt-get09:51:364
3386568993028,1cyclictest0-21swapper/408:55:014
3386568993027,2cyclictest3400605-21debian-sa107:35:004
3386563993027,2cyclictest3509222-21sh11:15:003
338656399300,29cyclictest3533551-21apt-get12:11:313
338656399300,29cyclictest0-21swapper/309:50:013
3386562993028,2cyclictest3397911-21sh07:30:002
3386562993028,1cyclictest3439144-21munin-run08:45:012
338656299300,30cyclictest3400614-21/usr/sbin/munin07:35:012
3386558993027,2cyclictest3426200-21apt-get08:21:351
338655899300,29cyclictest0-21swapper/111:01:361
3386555993028,1cyclictest3464917-21apt-get09:36:360
3386555993027,2cyclictest3447458-21dump-pmu-power09:00:010
338655599300,29cyclictest430883-21systemd-journal08:20:010
338657499290,28cyclictest0-21swapper/709:51:357
338657499290,28cyclictest0-21swapper/707:26:357
338657499290,28cyclictest0-21swapper/707:21:347
338657399290,28cyclictest3411961-21basename07:55:016
338657399290,28cyclictest0-21swapper/610:11:326
338657399290,28cyclictest0-21swapper/609:21:376
338657399290,28cyclictest0-21swapper/607:26:356
3386570992927,1cyclictest3521294-21apt-get11:41:355
3386570992927,1cyclictest3420274-21latency_hist08:10:015
338657099290,28cyclictest3401395-21apt-get07:36:365
338657099290,1cyclictest3462226-21apt-get09:31:355
338657099290,1cyclictest0-21swapper/511:30:005
3386568992925,3cyclictest3482474-21apt-get10:15:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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