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2026-04-27 - 21:17
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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
Characteristics of the 50 highest latencies:
System rackeslot2.osadl.org (updated Mon Apr 27, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221279921680,4sleep0191rcu_preempt07:40:460
221279921680,4sleep0191rcu_preempt07:40:450
225461221610,3sleep12254616-21kthreadcore08:15:411
217731821070,2sleep30-21swapper/307:15:393
24158362990,1sleep00-21swapper/010:10:430
22879052970,1sleep00-21swapper/008:40:440
22670652350,3sleep02267068-21kthreadcore08:25:420
2166912992817,6cyclictest2599357-21acpi12:15:310
2166912992810,13cyclictest0-21swapper/010:48:060
2166912992724,2cyclictest2188172-21http07:25:010
2166912992615,7cyclictest0-21swapper/010:20:020
216691299250,8cyclictest2440644-21ssh10:30:010
2166913992421,2cyclictest2166909-21cyclictest07:10:011
216691299249,7cyclictest0-21swapper/009:30:020
2166912992411,5cyclictest2617031-21kthreadcore12:25:380
216691299239,5cyclictest0-21swapper/011:45:330
2166912992314,5cyclictest2307796-21/usr/sbin/munin09:00:360
2166912992313,6cyclictest2564664-21grep11:50:400
2166912992312,6cyclictest2454113-21cat10:35:460
2166912992312,5cyclictest2478466-21latency_hist10:55:020
383433398220,5rtkit-daemon3851705-21mta-sts-daemon11:57:590
2166913992219,2cyclictest2173606-21grep07:15:021
2166913992219,2cyclictest0-21swapper/109:55:021
2166913992217,3cyclictest0-21swapper/110:20:031
2166913992216,2cyclictest2451536-21kthreadcore10:35:421
216691299229,6cyclictest0-21swapper/009:45:020
2166912992219,2cyclictest2167072-21/usr/sbin/munin07:10:020
216691299221,2cyclictest2448126-21munin-run10:35:000
2166912992212,5cyclictest3851702-21mta-sts-daemon12:24:460
2166912992212,5cyclictest3851702-21mta-sts-daemon12:24:460
2166914992118,1cyclictest0-21swapper/212:35:362
2166914992118,1cyclictest0-21swapper/208:40:002
2166913992117,3cyclictest3827634-1atopacctd10:28:051
2166913992117,3cyclictest0-21swapper/107:25:021
2166913992114,2cyclictest17350irq/127-ahci[0000:00:17.0]10:45:351
2166913992112,2cyclictest2521545-21mailstats11:20:451
216691299216,10cyclictest2521537-21mailstats11:20:450
216691299214,4cyclictest2340791-21tr09:20:450
2166912992119,1cyclictest2334993-21grep09:20:000
2166914992018,1cyclictest0-21swapper/207:15:022
2166914992017,1cyclictest0-21swapper/208:10:012
2166914992017,1cyclictest0-21swapper/208:05:002
2166913992017,2cyclictest2294241-21sensors_temp08:45:451
2166913992017,2cyclictest0-21swapper/112:00:011
2166913992015,1cyclictest134050irq/121-eno107:25:341
2166913992013,3cyclictest2412367-21kthreadcore10:10:381
2166913992013,2cyclictest134050irq/121-eno112:05:201
2166913992012,1cyclictest383433398rtkit-daemon12:03:131
216691299208,7cyclictest0-21swapper/010:55:350
216691299207,2cyclictest0-21swapper/010:43:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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