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2025-11-27 - 23:35
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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
Characteristics of the 50 highest latencies:
System rackdslot2.osadl.org (updated Thu Nov 27, 2025 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293932216168,21sleep20-21swapper/207:06:452
296032207172,24sleep30-21swapper/307:09:263
275112206173,22sleep00-21swapper/007:05:050
295952204171,22sleep10-21swapper/107:09:201
152472760,3sleep30-21swapper/311:05:263
142752650,2sleep20-21swapper/211:05:172
18092590,2sleep30-21swapper/308:25:123
136591540,1ptp4l391rcuc/312:23:573
2994399523,20cyclictest0-21swapper/311:22:153
2994399521,21cyclictest26373-21seq10:23:353
29943994817,28cyclictest28249-21df09:20:163
2994399475,20cyclictest7149-21seq11:59:193
2994399466,21cyclictest25032-21taskset11:27:093
2994399436,26cyclictest1784-21taskset07:16:343
2994399431,2cyclictest0-21swapper/310:25:373
29940994237,3cyclictest22951-21cron09:10:010
136591420,0ptp4l401ktimersoftd/311:51:253
136591420,0ptp4l401ktimersoftd/307:45:253
136591410,0ptp4l401ktimersoftd/312:32:123
136591410,0ptp4l401ktimersoftd/308:20:163
136591410,0ptp4l401ktimersoftd/308:00:163
51698380,4rtkit-daemon7171-21iostat_ios10:50:170
2994399381,3cyclictest226-21systemd-journal09:33:173
2994099382,7cyclictest121rcu_preempt12:10:190
51698370,3rtkit-daemon10611-21fschecks_count07:35:140
2994399371,3cyclictest14727-21idleruntime-cro07:45:003
29942993714,19cyclictest33-21ksoftirqd/211:25:152
29942993528,5cyclictest33-21ksoftirqd/210:54:382
29943993428,4cyclictest41-21ksoftirqd/312:08:093
2994399341,31cyclictest12069-21perf09:55:003
2994399341,2cyclictest0-21swapper/308:16:193
2994399340,3cyclictest20382chrt11:45:543
29942993428,3cyclictest33-21ksoftirqd/212:05:182
29940993428,4cyclictest9-21ksoftirqd/010:44:250
29940993427,5cyclictest9-21ksoftirqd/008:46:030
136591340,0ptp4l401ktimersoftd/310:41:533
29943993327,4cyclictest41-21ksoftirqd/312:26:543
29943993327,4cyclictest41-21ksoftirqd/309:43:593
29943993327,4cyclictest41-21ksoftirqd/307:39:343
29942993328,3cyclictest33-21ksoftirqd/209:40:142
29942993327,4cyclictest33-21ksoftirqd/210:04:242
29942993327,4cyclictest33-21ksoftirqd/208:39:132
29942993327,4cyclictest33-21ksoftirqd/208:15:122
29942993326,5cyclictest33-21ksoftirqd/210:35:452
29940993327,4cyclictest9-21ksoftirqd/008:13:460
29940993327,4cyclictest9-21ksoftirqd/008:05:040
29940993326,5cyclictest9-21ksoftirqd/010:18:100
29943993226,4cyclictest41-21ksoftirqd/312:02:553
29943993213,16cyclictest11850-21tune2fs08:45:193
29943993213,16cyclictest11270-21/usr/sbin/munin11:00:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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