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2026-01-03 - 03:17
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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 Sat Jan 03, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2424822860,28sleep30-21swapper/319:05:433
2424822860,28sleep30-21swapper/319:05:433
23956212512,77sleep223295-21/usr/sbin/munin19:05:392
23956212512,77sleep223295-21/usr/sbin/munin19:05:392
24793991114,89cyclictest15880-21apt-get22:25:090
24793991114,89cyclictest15880-21apt-get22:25:090
248099910731,23cyclictest0-21swapper/219:10:282
24801991064,39cyclictest352-21runrttasks22:21:591
248019910056,37cyclictest300-21rs:main1
119612990,6sleep00-21swapper/023:09:520
119612990,6sleep00-21swapper/023:09:520
24809999823,47cyclictest0-21swapper/220:40:102
24809999823,47cyclictest0-21swapper/220:40:102
24793999783,9cyclictest23873-21apt-get20:45:100
24793999670,18cyclictest18720-21latency_hist20:29:580
2480999955,61cyclictest9613-21ssh22:15:572
24793999447,20cyclictest181rcu_preempt21:49:220
24801999338,47cyclictest0-21swapper/122:45:291
24801999239,47cyclictest0-21swapper/121:59:561
2480199923,33cyclictest26307-21idleruntime-cro19:14:541
2480199902,31cyclictest5744-21cat22:59:571
24793999054,17cyclictest181rcu_preempt00:05:140
24793999054,17cyclictest181rcu_preempt00:05:140
24793999016,50cyclictest0-21swapper/022:15:570
2480199899,60cyclictest31944-21apt-get22:00:191
24801998940,42cyclictest0-21swapper/122:30:231
24793998952,29cyclictest31200-21ssh22:48:390
2480999883,71cyclictest16174-21/usr/sbin/munin22:25:272
2480999883,71cyclictest16174-21/usr/sbin/munin22:25:272
24801998839,42cyclictest0-21swapper/121:15:321
2480199883,30cyclictest6289-21fschecks_time23:00:181
2480199883,28cyclictest18882-21ssh21:39:591
24793998862,19cyclictest29888-21sh23:36:560
24793998860,20cyclictest31934-21diskmemload21:50:200
24793998847,32cyclictest22308-21latency_hist22:34:580
24809998770,11cyclictest22707-21ssh23:25:302
24809998770,11cyclictest22707-21ssh23:25:302
2480999872,52cyclictest21917-21apt-get22:35:082
2480199875,32cyclictest8481-21sh23:55:061
2480199873,35cyclictest18679-21ntpq00:10:281
2480199873,30cyclictest352-21runrttasks21:54:261
2480199873,28cyclictest27998-21grep20:55:311
2480199873,28cyclictest27998-21grep20:55:311
2480199872,34cyclictest24704-21rm23:29:531
2480199872,34cyclictest24704-21rm23:29:531
2480199872,32cyclictest12686-21cpuspeed21:30:111
2480199872,31cyclictest5056-21latency_hist23:49:571
2480199872,31cyclictest352-21runrttasks19:44:571
2480199872,30cyclictest16536-21grep20:20:321
24793998773,10cyclictest9549-21kworker/u18:2-rpciod22:23:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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