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2026-06-28 - 19:42
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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 rack3slot6.osadl.org (updated Sun Jun 28, 2026 12:45:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8730210858,40sleep10-21swapper/107:06:471
245842930,20sleep126-21ksoftirqd/112:25:361
284702880,9sleep126-21ksoftirqd/109:35:001
9218997728,44cyclictest22084-21latency_hist07:45:011
78542770,12sleep17859-21unixbench_singl10:05:361
921499755,59cyclictest3235-21apt-get09:55:140
9214997538,26cyclictest14-21ksoftirqd/012:20:130
747427527,36sleep00-21swapper/007:05:120
9218997330,8cyclictest26-21ksoftirqd/112:17:181
9218997328,9cyclictest26-21ksoftirqd/107:55:171
9218997328,9cyclictest26-21ksoftirqd/107:55:171
9218997327,40cyclictest18310-21latency_hist12:10:011
9218997030,35cyclictest9643-21/usr/sbin/munin07:10:211
9218996932,32cyclictest11333-21latency07:15:071
9218996932,32cyclictest11333-21latency07:15:071
9218996926,38cyclictest29030-21sh08:09:561
9214996935,28cyclictest14-21ksoftirqd/008:52:240
9218996824,39cyclictest5355-21awk10:00:221
9214996835,24cyclictest31608-21apt-get11:15:120
9214996830,24cyclictest0-21swapper/010:50:100
9218996731,32cyclictest18937-21tar07:35:181
9214996726,36cyclictest14-21ksoftirqd/012:00:170
9218996636,24cyclictest5470-21latency_hist08:30:011
9214996635,26cyclictest14-21ksoftirqd/007:35:430
9214996632,23cyclictest0-21swapper/010:15:130
9214996630,29cyclictest0-21swapper/008:05:120
9214996630,28cyclictest0-21swapper/012:35:140
9214996629,23cyclictest0-21swapper/008:35:200
9214996627,22cyclictest14086-21expr10:25:200
9218996536,20cyclictest940-21/usr/sbin/munin11:20:321
9218996534,25cyclictest503-21snmpd11:33:491
9218996533,24cyclictest15858-21switchtime12:00:341
9214996535,24cyclictest14-21ksoftirqd/009:34:300
9214996529,23cyclictest0-21swapper/010:20:110
9218996438,17cyclictest23105-21grep12:20:341
9218996436,22cyclictest23568-21ntp_states10:50:281
9218996435,23cyclictest9201-21seq08:40:031
9218996435,22cyclictest2107-21cut08:20:151
9218996434,24cyclictest562-21runrttasks11:06:361
9218996434,24cyclictest31305-21taskset11:13:401
9218996434,24cyclictest11776-21runrttasks10:19:291
9218996433,25cyclictest15035-21latency_hist07:25:021
921499643,39cyclictest0-21swapper/008:55:190
921499643,14cyclictest16380-21apt-get09:00:130
9214996431,25cyclictest0-21swapper/009:40:130
9214996429,23cyclictest0-21swapper/009:15:120
9214996428,24cyclictest0-21swapper/011:50:130
9214996428,24cyclictest0-21swapper/011:50:130
9214996427,24cyclictest0-21swapper/009:35:120
9214996425,24cyclictest0-21swapper/011:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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