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2025-12-21 - 09:45
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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 rack0slot2.osadl.org (updated Sun Dec 21, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6726542960,1sleep7672655-21kthreadcore19:54:457
57929025015,30sleep70-21swapper/719:05:507
579827994946,2cyclictest602816-21kworker/u16:1+flush-8:019:19:264
626589460,39rtkit-daemon0-21swapper/519:06:055
57925023828,7sleep60-21swapper/619:05:176
57927823423,8sleep40-21swapper/419:05:394
579827993128,2cyclictest708086-21kworker/u16:2+flush-8:020:34:254
579827993027,2cyclictest806272-21kworker/u16:1+flush-8:023:44:204
579838992825,2cyclictest834386-21ntpq21:14:547
579833992724,2cyclictest787230-21kworker/u16:2+events_unbound23:14:406
579827992624,2cyclictest1135372-21kworker/u16:3+flush-8:000:09:514
579838992524,0cyclictest0-21swapper/719:14:547
579833992523,2cyclictest748989-21kworker/u16:1+events_unbound20:39:206
579833992523,2cyclictest748989-21kworker/u16:1+events_unbound20:39:206
579833992422,2cyclictest669592-21kworker/u16:5+flush-8:021:04:216
579833992422,2cyclictest669592-21kworker/u16:5+events_unbound20:29:436
6646992230,1chrt0-21swapper/519:49:465
579838992220,1cyclictest1116354-21idleruntime-cro23:44:247
579833992220,2cyclictest806272-21kworker/u16:1+flush-8:022:09:206
9641532210,1chrt964156-21kthreadcore22:24:447
579838992120,0cyclictest0-21swapper/721:39:497
579838992118,2cyclictest839119-21grep21:19:457
579838992115,5cyclictest815889-21latency_hist21:09:257
579833992119,2cyclictest806272-21kworker/u16:1+flush-8:022:49:196
579833992119,2cyclictest787230-21kworker/u16:2+flush-8:022:39:206
579833992119,2cyclictest748989-21kworker/u16:1+events_unbound20:49:206
579833992118,2cyclictest661809-21kworker/u16:3+flush-8:019:59:366
579827992119,2cyclictest1066916-21kworker/u16:5+flush-8:023:54:564
579827992118,3cyclictest787230-21kworker/u16:2+flush-8:022:44:524
579833992018,2cyclictest922896-21kworker/u16:5+events_unbound22:19:436
579833992018,2cyclictest1066916-21kworker/u16:5+flush-8:023:29:206
579827992016,3cyclictest979035-21kworker/u16:0+flush-8:022:39:564
9105452190,1chrt910548-21kthreadcore21:54:477
579833991917,2cyclictest787230-21kworker/u16:2+events_unbound20:54:486
579833991917,2cyclictest1145774-21kworker/u16:0+events_unbound23:59:376
579833991917,2cyclictest1019802-21kworker/u16:3+events_unbound22:59:436
579827991917,2cyclictest661809-21kworker/u16:3+flush-8:020:09:524
10744782190,1chrt1074474-21kthreadcore23:19:497
7641912180,0sleep60-21swapper/620:39:476
579838991818,0cyclictest0-21swapper/721:33:437
579838991814,3cyclictest1267-21snmpd22:04:307
579838991812,5cyclictest1000054-21latency_hist22:44:257
579833991816,2cyclictest979035-21kworker/u16:0+flush-8:022:34:206
579833991816,2cyclictest806272-21kworker/u16:1+events_unbound21:22:376
579833991816,2cyclictest787230-21kworker/u16:2+flush-8:022:44:206
579833991816,2cyclictest650909-21kworker/u16:1+events_unbound19:54:486
579833991816,2cyclictest1184188-21kworker/u16:5+events_unbound00:24:436
579827991816,2cyclictest661809-21kworker/u16:3+flush-8:019:54:514
57983899172,13cyclictest884900-21hddtemp_smartct21:44:407
579838991716,0cyclictest0-21swapper/720:55:357
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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