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2026-04-01 - 10:26
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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 Apr 01, 2026 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2309021096,16sleep00-21swapper/019:03:050
233259910638,33cyclictest0-21swapper/122:59:341
233259910564,34cyclictest277-21dbus-daemon23:29:061
233399910257,38cyclictest14286-21gpgv23:19:082
2323621017,64sleep223305-21latency_hist19:04:092
23325991003,31cyclictest29550-21ssh22:49:351
23310991005,72cyclictest15-21ksoftirqd/020:49:310
23339999839,53cyclictest11002-21sh22:19:262
23339999839,53cyclictest11002-21sh22:19:262
2332599963,29cyclictest352-21runrttasks21:03:341
2332599962,30cyclictest352-21runrttasks22:55:311
229572956,15sleep10-21swapper/119:01:191
23339999469,18cyclictest373-21lldpd22:25:402
23339999446,41cyclictest0-21swapper/221:34:062
23325999451,36cyclictest544-21cron19:09:091
2332599943,42cyclictest20670-21ssh00:24:461
23339999356,31cyclictest26341-21fschecks_time22:44:282
2332599932,29cyclictest352-21runrttasks20:22:511
23310999321,39cyclictest15-21ksoftirqd/019:11:360
2332599922,27cyclictest1379550ssh23:17:491
2333999913,31cyclictest7869-21ntp_kernel_pll_21:19:342
2333999913,31cyclictest7869-21ntp_kernel_pll_21:19:342
23339999130,52cyclictest0-21swapper/220:34:432
2333999912,29cyclictest669350ssh22:11:562
2331099912,20cyclictest15-21ksoftirqd/022:24:210
23310999121,38cyclictest15-21ksoftirqd/022:03:290
2333999904,28cyclictest352-21runrttasks22:03:082
23339999036,47cyclictest0-21swapper/221:39:432
23339999036,47cyclictest0-21swapper/221:39:432
2333999903,32cyclictest16502-21fschecks_count21:34:262
2332599903,7cyclictest0-21swapper/121:19:181
2332599903,7cyclictest0-21swapper/121:19:181
2333999894,41cyclictest19676-21snmpd20:59:022
2333999893,45cyclictest24973-21head20:44:412
2333999893,33cyclictest8394-21fschecks_count00:04:222
2333999893,33cyclictest8394-21fschecks_count00:04:222
23339998923,57cyclictest30622-21latency_hist21:04:092
23325998944,38cyclictest14037-21latency_hist20:14:091
23325998944,38cyclictest14037-21latency_hist20:14:091
23339998872,10cyclictest3969-21sendmail21:14:052
2333999883,31cyclictest25815-21fschecks_time19:09:302
23339998818,24cyclictest2847-21modprobe23:54:062
23339998818,24cyclictest2847-21modprobe23:54:062
23325998843,35cyclictest0-21swapper/121:04:281
23310998863,16cyclictest30452-21diskmemload23:04:410
23339998765,15cyclictest28500-21fschecks_count21:54:272
2333999873,33cyclictest7939-21sort00:04:072
2333999873,30cyclictest30452-21diskmemload21:48:172
23339998725,56cyclictest0-21swapper/219:09:082
23339998725,56cyclictest0-21swapper/219:09:082
23325998742,35cyclictest0-21swapper/122:24:151
23339998633,46cyclictest0-21swapper/220:04:232
2333999863,33cyclictest7338-21modprobe19:54:052
2333999863,32cyclictest28877-21seq19:19:232
2333999863,31cyclictest9416-21fschecks_count19:59:282
2333999863,31cyclictest27956-21idleruntime-cro21:54:062
2333999863,30cyclictest20725-21cp23:29:082
2333999863,30cyclictest18862-21latency_hist20:29:092
2333999862,33cyclictest17464-21sh00:19:282
2333999862,33cyclictest13355-21tail20:09:422
2333999862,33cyclictest13355-21tail20:09:422
2333999862,28cyclictest9058-21chrt19:59:082
23325998640,39cyclictest8293-21sh23:09:081
23325998640,39cyclictest14788-21/usr/sbin/munin23:20:441
23325998640,39cyclictest14788-21/usr/sbin/munin23:20:441
23325998630,46cyclictest0-21swapper/121:44:211
23310998636,24cyclictest181rcu_preempt22:43:480
23310998636,24cyclictest181rcu_preempt22:43:480
2333999854,34cyclictest22703-21modprobe22:39:052
2333999853,34cyclictest5424-21latency_hist23:04:082
2333999853,34cyclictest24491-21cut23:34:422
2333999853,32cyclictest21491-21switchtime00:25:102
2333999853,32cyclictest1527-21cut19:34:312
2333999853,32cyclictest1527-21cut19:34:312
2333999853,31cyclictest4288-21/usr/sbin/munin21:14:432
23339998532,46cyclictest0-21swapper/223:54:382
23339998532,46cyclictest0-21swapper/223:54:382
2333999852,32cyclictest17047-21ssh22:29:222
2333999852,32cyclictest17047-21ssh22:29:222
2333999852,19cyclictest295250systemd-journal22:06:302
2333999852,19cyclictest295250systemd-journal22:06:302
23325998566,13cyclictest2666-21threads22:04:411
23325998566,13cyclictest2666-21threads22:04:411
23325998542,37cyclictest16984-21sh21:34:381
23325998542,34cyclictest19131-21fschecks_time20:29:271
2332599853,31cyclictest20979-21cat20:34:471
23310998557,23cyclictest29433-21latency_hist23:44:080
2333999844,31cyclictest21517-21if_eth023:30:412
2333999844,30cyclictest26648-21/usr/sbin/munin23:39:392
2333999844,26cyclictest3680-21grep19:39:412
2333999844,26cyclictest3680-21grep19:39:412
2333999843,31cyclictest10723-21latency_hist22:19:092
2333999843,30cyclictest27796-21wc19:14:402
2333999843,27cyclictest4770-21wc19:44:312
2333999843,27cyclictest4770-21wc19:44:312
2333999843,27cyclictest11880-21grep00:09:392
2333999842,32cyclictest14793-21grep20:14:402
2333999842,30cyclictest23275-21grep22:39:272
2333999842,30cyclictest23275-21grep22:39:272
23325998462,17cyclictest23302-21cyclictest22:09:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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