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2026-04-17 - 17:32
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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 Fri Apr 17, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217409912154,60cyclictest30342-21systemctl10:53:000
217409912154,60cyclictest30342-21systemctl10:53:000
217409912057,57cyclictest19861-21cpu11:28:160
217409911939,10cyclictest0-21swapper/011:53:180
217409911372,26cyclictest30892-21ssh10:53:180
21740991102,41cyclictest18454-21latency_hist10:33:020
21740991102,41cyclictest18454-21latency_hist10:33:020
21740991102,30cyclictest21169-21ssh12:23:340
21740991094,39cyclictest352-21runrttasks12:17:000
217409910816,41cyclictest8731-21kworker/u17:2+rpciod09:23:330
21740991073,53cyclictest1307-21apt-config07:38:040
21740991073,53cyclictest1307-21apt-config07:38:040
21740991072,27cyclictest4652-21cpu11:03:150
21740991072,27cyclictest4652-21cpu11:03:150
21740991063,42cyclictest23502-21munin-node07:08:120
217409910539,11cyclictest0-21swapper/007:28:160
21740991043,44cyclictest5477-21ls11:58:150
21740991042,44cyclictest13595-21ssh09:30:000
21740991034,34cyclictest22399-21ntp_kernel_err07:03:270
21740991033,37cyclictest22952-21grep08:44:060
21740991033,37cyclictest22952-21grep08:44:060
21740991014,29cyclictest17876-21ls09:38:030
21740991014,29cyclictest17876-21ls09:38:030
217409910119,28cyclictest4488-21latency_hist07:48:020
21572210114,61sleep221587-21modprobe07:03:002
2175399993,80cyclictest10902-21chrt11:13:173
2175399993,80cyclictest10902-21chrt11:13:173
2174799993,82cyclictest1432-21apt-get07:38:172
2174799993,82cyclictest1432-21apt-get07:38:172
2174099994,38cyclictest9243-21latency_hist08:03:020
21740999657,32cyclictest11472-21kernelversion11:13:590
21740999657,32cyclictest11472-21kernelversion11:13:590
2174799953,69cyclictest10281-21apt-get11:13:162
2174799953,69cyclictest10281-21apt-get11:13:162
2174599913,29cyclictest21891-21/usr/sbin/munin07:03:311
2174099913,67cyclictest1072-21apt-get10:58:140
2174099913,36cyclictest3217-21ssh09:13:450
21747999060,22cyclictest24334-21fschecks_time09:48:242
21747999060,22cyclictest24334-21fschecks_time09:48:242
21747998943,18cyclictest181rcu_preempt11:38:262
21747998943,18cyclictest181rcu_preempt11:38:262
21745998947,35cyclictest0-21swapper/108:53:361
21740998954,26cyclictest18187-21ssh09:38:180
21747998863,8cyclictest181rcu_preempt09:20:582
2174799883,48cyclictest39-21ksoftirqd/210:52:302
2174799883,48cyclictest39-21ksoftirqd/210:52:302
21745998851,32cyclictest21731-21cyclictest10:27:561
21745998844,36cyclictest2374-21systemd-journal09:29:121
21745998835,42cyclictest0-21swapper/111:18:251
2174599882,39cyclictest1509-21apt-get10:58:041
21740998817,56cyclictest26691-21idleruntime-cro09:52:590
21740998817,56cyclictest26691-21idleruntime-cro09:52:590
21745998744,35cyclictest0-21swapper/111:08:001
21745998744,35cyclictest0-21swapper/111:08:001
2174099873,43cyclictest28860-21ssh09:55:380
21747998662,15cyclictest21731-21cyclictest10:17:362
21747998662,15cyclictest21731-21cyclictest10:17:362
21747998633,31cyclictest39-21ksoftirqd/211:03:342
21747998633,31cyclictest39-21ksoftirqd/211:03:342
2174599863,40cyclictest17396-21ssh12:18:111
2174599863,36cyclictest2490-21/usr/sbin/munin11:53:141
2174599863,32cyclictest26162-21proc_pri07:13:311
2174599863,32cyclictest26162-21proc_pri07:13:311
2174599863,28cyclictest10561-21grep10:18:351
2174599862,35cyclictest25008-21sh12:30:051
21740998645,31cyclictest0-21swapper/010:38:190
2174799857,65cyclictest2061-21ssh10:59:012
21747998559,17cyclictest0-21swapper/208:43:592
21747998559,17cyclictest0-21swapper/208:43:592
21747998534,8cyclictest181rcu_preempt08:27:182
21747998511,65cyclictest19676-21snmpd09:13:492
21745998523,55cyclictest23918-21grep11:33:361
2174599852,30cyclictest10052-21/usr/sbin/munin09:23:371
21740998562,14cyclictest26467-21latency_hist12:33:030
2174799844,44cyclictest39-21ksoftirqd/211:25:082
2174799842,30cyclictest39-21ksoftirqd/212:08:002
21745998466,12cyclictest9833-21kworker/u19:0-flush-179:007:23:201
2174599845,67cyclictest27025-21ssh09:53:101
21745998437,39cyclictest0-21swapper/108:44:051
21745998437,39cyclictest0-21swapper/108:44:051
2174599843,6cyclictest0-21swapper/109:38:151
2174599843,35cyclictest25112-21/usr/sbin/munin09:48:391
2174599843,35cyclictest25112-21/usr/sbin/munin09:48:391
2174599843,31cyclictest20575-21ssh12:23:191
2174599842,37cyclictest19710-21/usr/sbin/munin10:33:371
21747998336,32cyclictest0-21swapper/212:13:072
21745998339,37cyclictest0-21swapper/111:58:251
2174599833,39cyclictest9310-21modprobe10:18:001
2174599833,39cyclictest9310-21modprobe10:18:001
2174599833,32cyclictest21868-21/usr/sbin/munin09:43:341
2174599832,40cyclictest582-21ssh10:03:111
2174599832,40cyclictest582-21ssh10:03:111
2174599832,36cyclictest28671-21latency_hist11:43:011
2174599832,36cyclictest28671-21latency_hist11:43:011
2174599832,35cyclictest30576-21netstat09:58:271
2174599832,33cyclictest5128-21rm09:16:261
2174799827,35cyclictest39-21ksoftirqd/207:29:032
21747998251,9cyclictest181rcu_preempt12:18:302
21745998264,12cyclictest30963-21kworker/u17:0-xprtiod12:10:131
21745998240,35cyclictest0-21swapper/109:18:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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