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2026-01-09 - 09:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #5

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Eltec
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot5s.osadl.org (updated Fri Jan 09, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2059721620sleep1121650irq/29-eth0_g0_21:44:541
295442740sleep1121650irq/29-eth0_g0_00:32:111
121740ksoftirqd/1121750irq/30-eth0_g0_19:46:231
122472730sleep1121750irq/30-eth0_g0_23:20:171
121630ksoftirqd/1121650irq/29-eth0_g0_23:50:450
284272620sleep1121650irq/29-eth0_g0_00:28:251
130552570sleep0121750irq/30-eth0_g0_21:12:330
114232540sleep1121750irq/30-eth0_g0_23:19:571
121530ksoftirqd/1121750irq/30-eth0_g0_22:13:071
121510ksoftirqd/122712sleep022:40:170
121500ksoftirqd/1121750irq/30-eth0_g0_23:08:361
121500ksoftirqd/1121750irq/30-eth0_g0_21:50:101
121490ksoftirqd/1121750irq/30-eth0_g0_21:38:351
197872480sleep1121650irq/29-eth0_g0_23:52:321
121480ksoftirqd/1121650irq/29-eth0_g0_00:05:411
210012470sleep1121750irq/30-eth0_g0_23:57:251
121460ksoftirqd/1121650irq/29-eth0_g0_22:50:131
121460ksoftirqd/1121650irq/29-eth0_g0_19:50:131
121460ksoftirqd/1121650irq/29-eth0_g0_00:04:181
121450ksoftirqd/1121750irq/30-eth0_g0_22:32:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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