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2026-09-16 - 06:20
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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 100 highest latencies:
System rackbslot7.osadl.org (updated Wed Sep 16, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5189910618,36cyclictest24565-21sort23:24:192
5189910456,9cyclictest30288-21sh21:44:412
5189910447,15cyclictest24519-21latency_hist20:19:102
5189910447,15cyclictest24519-21latency_hist20:19:102
414210414,64sleep0433-21latency_hist19:09:110
518991033,51cyclictest13148-21wc23:59:132
5079910272,20cyclictest25532-21sh00:19:241
518999948,11cyclictest25434-21latency_hist00:19:112
3232957,16sleep20-21swapper/219:09:012
507999436,50cyclictest0-21swapper/119:44:291
507999436,50cyclictest0-21swapper/119:44:291
497999353,32cyclictest27833-21fschecks_time23:29:300
50799922,31cyclictest3906-21latency_hist23:44:101
50799906,18cyclictest26828-21ssh21:39:351
50799904,30cyclictest16291-21latency_hist19:54:111
507999041,43cyclictest18348-21timerandwakeup21:24:451
50799903,30cyclictest3625-21cat21:54:331
50799902,29cyclictest10133-21sort23:54:251
507999020,11cyclictest0-21swapper/120:34:241
497999070,13cyclictest15335-21switchtime21:19:440
33429014,47sleep1372-21munin-run19:09:081
50799892,29cyclictest18871-21fschecks_time23:14:311
507998835,44cyclictest0-21swapper/119:39:311
507998723,57cyclictest0-21swapper/120:04:111
50799872,32cyclictest28200-21rm23:29:401
50799872,29cyclictest343-21runrttasks19:14:291
50799872,29cyclictest343-21runrttasks19:14:291
50799863,30cyclictest28178-21grep22:34:441
50799863,30cyclictest24708-21ntpq22:29:361
50799863,30cyclictest24708-21ntpq22:29:361
50799862,32cyclictest6589-21expr19:24:571
50799862,32cyclictest6589-21expr19:24:571
50799862,32cyclictest6589-21expr19:24:571
50799862,30cyclictest15522-21ssh23:09:121
50799862,28cyclictest17870-21awk22:19:081
50799853,31cyclictest7479-21runrttasks23:49:331
50799853,31cyclictest5388-21timerandwakeup19:19:441
50799853,31cyclictest25442-21/usr/sbin/munin20:19:451
50799853,31cyclictest21166-21processes21:29:421
50799853,30cyclictest19411-21apt-key00:09:121
507998523,10cyclictest10605-21unixbench_singl19:34:431
50799852,30cyclictest4764-21runrttasks23:44:411
50799852,24cyclictest1167-21grep21:49:451
497998574,7cyclictest0-21swapper/000:09:380
497998574,7cyclictest0-21swapper/000:09:380
497998564,15cyclictest9465-21unixbench_multi21:09:450
50799843,33cyclictest5814-21apt-get21:59:231
50799843,29cyclictest15002-21/usr/sbin/munin21:19:361
50799843,28cyclictest3953-21fschecks_time22:49:301
50799842,33cyclictest2622-21cat20:49:411
50799842,33cyclictest2622-21cat20:49:411
50799842,31cyclictest7572-21timerandwakeup21:04:421
50799842,31cyclictest7572-21timerandwakeup21:04:421
50799842,31cyclictest31756-21fschecks_time00:29:321
50799842,31cyclictest30575-21ssh21:44:441
50799842,30cyclictest28070-21cut20:29:301
50799842,30cyclictest24377-21timerandwakeup21:34:471
50799842,30cyclictest24377-21timerandwakeup21:34:471
49799844,71cyclictest30541-21ssh23:34:210
50799833,30cyclictest19555-21chrt22:20:321
50799833,30cyclictest19555-21chrt22:20:321
507998331,44cyclictest0-21swapper/100:10:251
507998331,44cyclictest0-21swapper/100:10:251
507998323,8cyclictest0-21swapper/121:17:331
50799832,31cyclictest12171-21/usr/sbin/munin22:09:281
50799832,30cyclictest32465-21cron20:44:081
507998317,19cyclictest7843-21seq22:55:051
507998317,19cyclictest7843-21seq22:55:051
497998362,14cyclictest0-21swapper/000:00:170
497998362,14cyclictest0-21swapper/000:00:170
497998352,8cyclictest181rcu_preempt23:49:130
50799824,29cyclictest29291-21sort00:24:421
50799824,29cyclictest29291-21sort00:24:421
507998233,41cyclictest23989-21unixbench_singl20:14:441
507998233,41cyclictest23989-21unixbench_singl20:14:441
50799822,32cyclictest24555-21/usr/sbin/munin23:24:421
50799822,32cyclictest22758-21fschecks_count00:14:381
50799822,32cyclictest22758-21fschecks_count00:14:381
50799822,31cyclictest343-21runrttasks21:10:021
50799822,30cyclictest2360-21apt-config19:14:121
49799823,45cyclictest15-21ksoftirqd/022:49:180
518998164,10cyclictest951-21sensors21:49:432
51899812,61cyclictest13302-21apt-get23:59:282
51899812,61cyclictest13302-21apt-get23:59:282
50799815,25cyclictest8332-21fschecks_time19:29:471
50799813,34cyclictest10041-21sed22:59:311
50799813,30cyclictest17797-21latency_hist19:59:101
50799812,33cyclictest27206-21tail20:24:461
50799812,32cyclictest14370-21find00:00:411
50799812,32cyclictest14370-21find00:00:411
50799812,31cyclictest776-21netstat20:44:361
50799812,31cyclictest776-21netstat20:44:361
50799812,31cyclictest22380-21grep20:09:461
50799812,30cyclictest20603-21switchtime20:05:471
50799812,29cyclictest15774-21df23:09:261
497998166,10cyclictest485-21cyclictest22:55:380
497998166,10cyclictest485-21cyclictest22:55:380
497998149,13cyclictest58-21kcompactd019:19:260
497998141,17cyclictest181rcu_preempt21:07:380
497998141,17cyclictest181rcu_preempt21:07:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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