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2026-01-07 - 07:08
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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 Wed Jan 07, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1765821090,5sleep017660-21grep22:05:150
7520999971,20cyclictest19080-21unixbench_multi23:00:170
7520999969,11cyclictest181rcu_preempt20:29:420
7520999969,11cyclictest181rcu_preempt20:29:420
753499983,71cyclictest7459-21runrttasks21:49:581
7534999550,8cyclictest181rcu_preempt20:34:411
7534999550,8cyclictest181rcu_preempt20:34:411
70792947,60sleep27080-21sshd19:05:582
670129227,36sleep30-21swapper/319:05:223
7538999175,10cyclictest29734-21timerandwakeup00:10:142
7534999044,21cyclictest4231-21ssh22:36:311
7520998951,9cyclictest181rcu_preempt21:45:060
7520998946,8cyclictest181rcu_preempt21:09:410
7534998753,10cyclictest58-21kcompactd021:28:441
7534998753,10cyclictest58-21kcompactd021:28:441
7534998746,10cyclictest181rcu_preempt23:40:151
7520998711,59cyclictest7496-21ssh21:50:040
72132875,61sleep00-21swapper/019:07:430
7538998669,11cyclictest297-21systemd-logind21:59:412
7538998669,11cyclictest297-21systemd-logind21:59:412
7534998647,15cyclictest181rcu_preempt22:50:041
7534998647,15cyclictest181rcu_preempt22:50:041
7520998650,12cyclictest300-21rs:main0
7520998650,12cyclictest300-21rs:main0
7520998638,29cyclictest181rcu_preempt20:40:310
7534998558,14cyclictest0-21swapper/120:44:421
7534998556,12cyclictest181rcu_preempt22:02:311
7520998553,8cyclictest181rcu_preempt20:50:140
7534998448,12cyclictest181rcu_preempt23:59:421
7538998366,11cyclictest17367-21ssh23:50:382
7520998354,9cyclictest181rcu_preempt00:06:390
7520998335,8cyclictest181rcu_preempt00:25:140
7538998266,11cyclictest14681-21diskmemload21:48:332
7538998264,12cyclictest200-21systemd-journal21:33:582
7534998226,10cyclictest0-21swapper/100:20:051
7520998235,14cyclictest181rcu_preempt23:46:470
7520998235,14cyclictest181rcu_preempt23:46:470
7538998165,10cyclictest3095-21kernelversion22:35:032
7534998147,8cyclictest8787-21ssh00:29:421
7520998141,10cyclictest181rcu_preempt00:19:420
7520998141,10cyclictest181rcu_preempt00:19:420
7520998130,12cyclictest181rcu_preempt22:15:400
7534998059,15cyclictest29105-21fschecks_count00:10:011
7534998059,13cyclictest6705-21ssh21:49:181
7534998051,10cyclictest181rcu_preempt23:20:361
7534998047,14cyclictest31205-21ssh22:28:181
7534998047,14cyclictest29733-21ssh21:33:491
7534998045,14cyclictest22270-21ssh23:05:221
7534998029,24cyclictest0-21swapper/119:24:411
7534998029,24cyclictest0-21swapper/119:24:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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