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2026-05-04 - 03:40
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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 Mon May 04, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31692212513,77sleep031730-21grep18:57:190
561991192,81cyclictest30100-21apt-get22:32:081
31518210919,42sleep20-21swapper/218:57:052
3173421089,73sleep131789-21/usr/sbin/munin18:57:201
561991023,69cyclictest19645-21apt-get19:57:081
5679910132,26cyclictest14946-21runrttasks22:59:132
5619910070,9cyclictest181rcu_preempt23:27:171
5619910070,9cyclictest181rcu_preempt23:27:171
561999547,9cyclictest181rcu_preempt20:52:141
567999444,39cyclictest31206-21apt-get20:32:042
561999452,14cyclictest181rcu_preempt00:27:271
561999452,14cyclictest181rcu_preempt00:27:271
561999447,10cyclictest181rcu_preempt00:06:561
54999943,67cyclictest30663-21apt-get22:32:090
561999348,12cyclictest181rcu_preempt00:26:541
56199933,63cyclictest4119-21apt-get19:12:101
56199933,63cyclictest4119-21apt-get19:12:101
561999331,31cyclictest0-21swapper/121:07:281
567999235,19cyclictest8184-21diskmemload23:26:202
567999228,25cyclictest352-21runrttasks23:27:052
567999228,25cyclictest352-21runrttasks23:27:052
561999263,19cyclictest3679-21sh21:47:171
561999252,25cyclictest181rcu_preempt19:22:181
567999129,21cyclictest12083-21seq23:48:012
549999138,15cyclictest0-21swapper/021:47:280
567999031,22cyclictest27409-21rm00:13:502
567999030,24cyclictest24398-21/usr/sbin/munin22:22:172
567999029,26cyclictest2806-21ssh21:46:192
567999026,32cyclictest8184-21diskmemload22:42:192
567999026,32cyclictest8184-21diskmemload22:42:192
567999026,25cyclictest16002-21ssh22:07:222
561999065,17cyclictest18704-21fschecks_time22:12:141
561999063,8cyclictest181rcu_preempt21:32:311
57499893,49cyclictest0-21swapper/321:12:213
567998931,46cyclictest0-21swapper/222:17:062
567998928,28cyclictest22756-21sh00:06:572
567998928,21cyclictest8020-21seq21:54:012
567998926,24cyclictest20618-21/usr/sbin/munin00:02:292
567998925,25cyclictest7841-21/usr/sbin/munin19:22:262
561998952,14cyclictest181rcu_preempt23:32:281
561998950,13cyclictest181rcu_preempt20:51:551
561998950,13cyclictest181rcu_preempt20:51:551
561998941,12cyclictest181rcu_preempt20:42:211
567998872,9cyclictest0-21swapper/221:12:312
567998830,23cyclictest30884-21seq20:31:422
567998830,20cyclictest32375-21ssh22:34:132
567998826,23cyclictest18504-21ssh23:59:072
567998821,28cyclictest10757-21runrttasks19:28:162
561998846,13cyclictest181rcu_preempt19:41:541
561998845,10cyclictest181rcu_preempt22:50:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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