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2026-06-13 - 07:38
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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 Sat Jun 13, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19529991243,42cyclictest352-21runrttasks22:59:211
19525991242,70cyclictest4751-21cstates19:50:250
19525991242,70cyclictest4751-21cstates19:50:250
19525991152,78cyclictest20947-21apt-get20:39:320
19525991152,78cyclictest20947-21apt-get20:39:320
19525991143,72cyclictest29057-21apt-get22:49:300
19525991143,72cyclictest29057-21apt-get22:49:300
19525991073,69cyclictest15437-21modprobe00:14:300
195439910458,29cyclictest28823-21kworker/u17:1-writeback23:49:142
195439910026,28cyclictest0-21swapper/220:29:222
195439910026,28cyclictest0-21swapper/220:29:222
1952999962,31cyclictest352-21runrttasks21:03:011
1952999932,32cyclictest352-21runrttasks20:34:041
1952999932,32cyclictest352-21runrttasks20:34:041
19543999232,28cyclictest16848-21seq22:29:262
19543999232,28cyclictest16848-21seq22:29:262
19529999245,42cyclictest0-21swapper/100:15:101
1952999922,26cyclictest352-21runrttasks20:53:411
1952999912,32cyclictest352-21runrttasks19:14:011
1952999912,30cyclictest352-21runrttasks20:47:371
19525999149,29cyclictest6181-21apt-get19:54:250
19525999149,29cyclictest6181-21apt-get19:54:250
1952999904,10cyclictest0-21swapper/121:04:241
19543998970,13cyclictest29585-21sh22:49:562
19543998970,13cyclictest29585-21sh22:49:562
19543998929,21cyclictest24170-21seq20:49:192
19529998947,35cyclictest11254-21latency22:19:341
19529998947,35cyclictest11254-21latency22:19:341
19529998946,36cyclictest7041-21sh21:19:271
19525998967,15cyclictest15864-21latency_hist21:34:140
1952999884,9cyclictest0-21swapper/122:39:241
1952999884,9cyclictest0-21swapper/122:39:241
1952999884,37cyclictest8611-21apt-get23:09:221
19529998833,44cyclictest0-21swapper/120:19:231
1952999883,10cyclictest0-21swapper/118:59:231
1952599883,61cyclictest22017-21runrttasks19:04:370
19543998731,23cyclictest10535-21seq00:05:392
19529998745,35cyclictest0-21swapper/121:09:271
19529998745,35cyclictest0-21swapper/121:09:271
1952999873,43cyclictest29116-21sshd22:49:311
1952999873,43cyclictest29116-21sshd22:49:311
1952999873,36cyclictest32425-21kworker/u18:2+rpciod23:19:251
1952999872,8cyclictest0-21swapper/121:34:471
1952999872,7cyclictest0-21swapper/100:09:221
1952999872,42cyclictest12735-21sendmail-msp21:29:121
19525998763,16cyclictest20131-21latency18:59:360
19543998627,19cyclictest26813-21seq20:55:032
19543998627,19cyclictest26813-21seq20:55:032
1952999864,8cyclictest0-21swapper/119:54:251
1952999864,8cyclictest0-21swapper/119:54:251
1952999863,9cyclictest0-21swapper/122:24:201
1952999862,34cyclictest9616-21/usr/sbin/munin20:04:331
1954399854,56cyclictest15383-21apt-get00:14:282
19543998529,21cyclictest15308-21seq20:20:442
19543998521,22cyclictest15154-21runrttasks21:32:402
19529998540,38cyclictest0-21swapper/123:14:481
19529998540,38cyclictest0-21swapper/123:14:481
1952999853,39cyclictest9120-21/usr/sbin/munin00:04:221
1952999853,36cyclictest5945-21systemd19:54:131
1952999853,36cyclictest5945-21systemd19:54:131
1952999852,8cyclictest0-21swapper/119:44:281
1952999852,8cyclictest0-21swapper/119:44:281
19543998429,24cyclictest26426-21seq19:17:212
19543998422,28cyclictest6084-21latency_hist19:54:152
19543998422,28cyclictest6084-21latency_hist19:54:152
1952999845,73cyclictest0-21swapper/119:59:261
1952999845,73cyclictest0-21swapper/119:59:261
19529998442,35cyclictest0-21swapper/119:39:461
1952999843,40cyclictest352-21runrttasks23:44:411
1952999843,39cyclictest28216-21gpgv19:24:121
1952999843,39cyclictest28216-21gpgv19:24:121
1952999843,34cyclictest2908-21grep23:54:141
1952999843,34cyclictest2908-21grep23:54:141
1952999842,35cyclictest27708-21/usr/sbin/munin23:39:491
19525998418,32cyclictest0-21swapper/020:24:280
19543998327,23cyclictest17049-21seq20:27:282
1952999839,66cyclictest0-21swapper/121:40:541
19529998340,36cyclictest14455-21sh21:30:431
1952999833,7cyclictest0-21swapper/122:54:271
1952999833,40cyclictest24871-21ssh23:35:161
1952999833,40cyclictest24871-21ssh23:35:161
1952999833,39cyclictest20321-21sed22:34:381
1952999833,35cyclictest20929-21/usr/sbin/munin20:40:251
1952999833,35cyclictest20929-21/usr/sbin/munin20:40:251
1952999833,33cyclictest29989-21taskset21:56:341
1952999833,33cyclictest29989-21taskset21:56:341
1952999833,33cyclictest21496-21munin-node19:04:181
1952999833,33cyclictest14105-21latency_hist20:19:141
1952999833,31cyclictest31916-21/usr/sbin/munin19:34:351
1952999833,31cyclictest31916-21/usr/sbin/munin19:34:351
1952999832,9cyclictest0-21swapper/120:09:251
1952999832,33cyclictest16973-21seq20:26:311
19543998231,19cyclictest29404-21seq21:02:082
19529998254,20cyclictest17784-21kworker/u18:0+nfsiod23:26:321
1952999824,32cyclictest20592-21/usr/sbin/munin23:29:471
1952999823,72cyclictest6178-21ssh23:59:271
1952999823,34cyclictest3804-21runrttasks23:54:451
1952999823,33cyclictest8572-21/usr/sbin/munin22:14:451
1952999823,32cyclictest277-21dbus-daemon19:34:131
1952999823,32cyclictest277-21dbus-daemon19:34:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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