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2026-04-01 - 01:34
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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 Tue Mar 31, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7587991183,31cyclictest352-21runrttasks11:11:060
75879911143,59cyclictest0-21swapper/010:14:360
7587991114,29cyclictest352-21runrttasks10:27:160
7587991113,30cyclictest29339-21ssh09:27:570
7587991083,30cyclictest10774-21ssh10:45:080
7587991082,43cyclictest22946-21apt-get07:49:190
75879910747,53cyclictest23841-21sh09:19:110
75879910747,53cyclictest23841-21sh09:19:110
7587991073,25cyclictest19676-21snmpd10:55:150
7587991073,25cyclictest19676-21snmpd10:55:150
7587991072,25cyclictest5042-21sh11:29:220
76039910628,37cyclictest0-21swapper/208:59:212
7587991064,29cyclictest13013-21latency_hist07:19:350
7587991064,29cyclictest13013-21latency_hist07:19:350
75879910615,61cyclictest352-21runrttasks11:56:090
734421066,15sleep00-21swapper/007:03:070
6454210647,18sleep2181rcu_preempt06:59:392
7587991053,26cyclictest10125-21rm12:31:100
7597991042,84cyclictest24149-21ssh09:19:281
7587991045,10cyclictest0-21swapper/010:19:210
7587991033,30cyclictest32005-21sh12:14:200
7587991033,24cyclictest19780-21tune2fs10:59:300
7587991032,26cyclictest4636-21ssh11:28:580
7597991022,90cyclictest11695-21modprobe07:14:331
7597991022,90cyclictest11695-21modprobe07:14:331
7587991024,29cyclictest352-21runrttasks08:53:290
7587991023,29cyclictest352-21runrttasks08:55:520
7587991023,25cyclictest30236-21runrttasks11:16:320
7587991022,24cyclictest12235-21sh09:53:530
7587991014,33cyclictest31873-21if_eth011:19:320
7587991014,33cyclictest31873-21if_eth011:19:320
7587991012,22cyclictest27208-21seq08:00:100
75879910111,8cyclictest0-21swapper/009:54:200
7603991003,59cyclictest24145-21ssh09:19:272
75979910059,20cyclictest181rcu_preempt10:29:121
75979910059,20cyclictest181rcu_preempt10:29:121
7587991004,22cyclictest28957-21seq08:07:020
7587991004,22cyclictest28957-21seq08:07:020
7587991003,25cyclictest18527-21runrttasks11:50:550
7587991003,25cyclictest18527-21runrttasks11:50:550
758799994,33cyclictest352-21runrttasks11:44:220
758799994,30cyclictest352-21runrttasks09:01:390
758799993,29cyclictest24096-21apt-get09:19:440
758799993,26cyclictest29385-21/usr/sbin/munin08:09:470
758799993,25cyclictest30563-21latency09:29:340
7603999824,34cyclictest0-21swapper/208:59:102
758799983,35cyclictest9324-21ssh11:35:140
758799983,35cyclictest9324-21ssh11:35:140
758799983,35cyclictest352-21runrttasks12:23:530
758799983,27cyclictest352-21runrttasks12:13:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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