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2025-10-20 - 23:51
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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 rackfslot7.osadl.org (updated Mon Oct 20, 2025 12:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8189339910222,79cyclictest954744-21/usr/sbin/munin11:10:010
818933999214,59cyclictest960103-21chrt11:16:570
818933997819,1cyclictest90403950systemd-run09:40:010
818933997133,38cyclictest0-21swapper/012:31:260
818933997133,38cyclictest0-21swapper/012:11:300
818933997032,38cyclictest0-21swapper/007:37:130
818933996951,18cyclictest0-21swapper/009:17:530
818933996931,38cyclictest0-21swapper/009:41:090
81893399634,39cyclictest0-21swapper/009:04:130
81893399634,39cyclictest0-21swapper/009:04:130
81893599624,39cyclictest0-21swapper/207:10:182
81893399624,39cyclictest994275-21unin-run12:20:000
818933995739,18cyclictest251irq_work/010:45:210
818933995738,19cyclictest171ktimers/010:53:350
818933995718,39cyclictest961114-21cpuspeed_turbos11:20:140
81893399570,38cyclictest815833-21kworker/0:2+ice07:16:170
81893399570,18cyclictest0-21swapper/012:21:180
818933995618,38cyclictest171ktimers/007:50:250
818933995618,38cyclictest0-21swapper/009:58:250
818933995618,19cyclictest872-21mta-sts-daemon10:43:490
818939995536,19cyclictest0-21swapper/609:55:176
818933995538,17cyclictest171ktimers/011:57:300
818933995537,18cyclictest171ktimers/008:18:090
818933995517,19cyclictest965981-21munin-run11:30:000
818933995517,19cyclictest920617-21kworker/0:0+ice11:46:080
818933995436,18cyclictest171ktimers/008:08:110
818933995436,18cyclictest171ktimers/007:29:470
818933995419,35cyclictest0-21swapper/009:53:090
818933995419,15cyclictest0-21swapper/012:28:260
818933995419,15cyclictest0-21swapper/011:39:160
818933995416,19cyclictest815833-21kworker/0:2+ice09:27:070
818933995335,0cyclictest0-21swapper/010:32:330
818933995319,15cyclictest0-21swapper/007:34:330
818933995315,19cyclictest916866-21ntpq10:00:190
818933995314,39cyclictest0-21swapper/012:03:580
818933995313,39cyclictest362-21jbd2/sda2-808:55:110
818940995214,19cyclictest0-21swapper/708:00:177
818940995213,19cyclictest0-21swapper/711:25:177
818934995213,38cyclictest0-21swapper/112:00:191
818933995234,0cyclictest0-21swapper/010:26:090
818933995233,19cyclictest0-21swapper/011:51:020
818933995233,19cyclictest0-21swapper/010:56:070
818933995233,19cyclictest0-21swapper/009:49:330
818933995233,19cyclictest0-21swapper/009:06:570
818933995233,19cyclictest0-21swapper/008:51:070
818933995233,19cyclictest0-21swapper/008:36:170
818933995233,19cyclictest0-21swapper/007:58:350
818933995233,19cyclictest0-21swapper/007:43:410
818933995233,19cyclictest0-21swapper/007:12:050
818933995214,19cyclictest0-21swapper/011:04:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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