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2025-11-26 - 14:27
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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 Wed Nov 26, 2025 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
526921488,18sleep00-21swapper/019:04:320
526921488,18sleep00-21swapper/019:04:320
5924210911,61sleep16009-21grep19:04:541
5924210911,61sleep16009-21grep19:04:541
65909910664,34cyclictest0-21swapper/123:59:511
1106621040,9sleep20-21swapper/220:59:102
6586991032,84cyclictest86-21kswapd023:59:070
6586991008,46cyclictest2687-21apt-get20:34:210
6590999672,17cyclictest691-21cron19:54:071
659099963,71cyclictest9633-21apt-get20:54:231
6590999365,19cyclictest10210-21kworker/u17:1+events_unbound22:09:071
659099932,30cyclictest5516-21sh22:48:011
6590999233,52cyclictest0-21swapper/123:19:091
658699924,67cyclictest19957-21apt-get23:14:210
6590999162,18cyclictest9547-21latency_hist20:54:111
659099913,46cyclictest13403-40mandb23:59:091
659099903,33cyclictest14550-21grep19:29:441
6586999073,10cyclictest5834-21sh23:44:420
6586999073,10cyclictest5834-21sh23:44:420
6594998972,10cyclictest17131-21sh23:09:062
6590998970,13cyclictest540-21uptime23:34:441
6590998938,45cyclictest17759-21cpu21:14:241
659099893,32cyclictest28965-21/usr/sbin/munin21:34:371
659099893,32cyclictest28965-21/usr/sbin/munin21:34:371
659099893,31cyclictest25188-21grep22:24:391
659099892,31cyclictest31161-21grep22:34:441
659499887,64cyclictest14855-21ssh21:09:292
659099883,35cyclictest29395-21sh00:26:391
659099883,34cyclictest18477-21grep23:09:441
659099883,33cyclictest23837-21taskset19:59:361
659099883,32cyclictest31012-21grep20:19:441
659099883,32cyclictest31012-21grep20:19:441
659099882,31cyclictest29799-21grep23:29:401
6594998772,10cyclictest6575-21cyclictest20:49:442
659099874,30cyclictest8542-21chrt21:54:431
6590998738,40cyclictest0-21swapper/123:25:061
6590998738,40cyclictest0-21swapper/123:25:061
659099873,35cyclictest25874-21grep20:04:421
659099873,32cyclictest22208-21/usr/sbin/munin00:14:181
659099873,32cyclictest22208-21/usr/sbin/munin00:14:181
6590998729,52cyclictest0-21swapper/123:53:471
659099872,33cyclictest16257-21awk19:34:461
659099872,31cyclictest23594-21sh23:19:321
6594998662,13cyclictest27443-21cpuspeed22:29:232
6594998662,13cyclictest27443-21cpuspeed22:29:232
659099869,67cyclictest28428-21apt-get20:14:211
659099869,67cyclictest28428-21apt-get20:14:211
6590998638,39cyclictest0-21swapper/121:39:231
659099863,30cyclictest797-21ssh00:34:251
659099863,30cyclictest23291-21cat19:59:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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