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2025-12-28 - 19:01

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 Dec 26, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265021580sleep1121450irq/29-eth0_g0_22:28:461
121760ksoftirqd/1121550irq/30-eth0_g0_00:15:011
325982740sleep0121550irq/30-eth0_g0_00:30:170
305262730sleep1121550irq/30-eth0_g0_00:20:431
121710ksoftirqd/1121550irq/30-eth0_g0_23:35:160
121710ksoftirqd/1121550irq/30-eth0_g0_23:35:160
99792630sleep0121450irq/29-eth0_g0_22:58:400
308922630sleep1121550irq/30-eth0_g0_22:10:211
308922630sleep1121550irq/30-eth0_g0_22:10:211
113092620sleep0121550irq/30-eth0_g0_23:04:550
323732590sleep1121550irq/30-eth0_g0_22:15:581
264772540sleep0121550irq/30-eth0_g0_21:53:280
121530ksoftirqd/1121550irq/30-eth0_g0_23:27:071
121530ksoftirqd/1121550irq/30-eth0_g0_22:41:200
1868299521cyclictest10246-21df23:00:131
121500ksoftirqd/1121550irq/30-eth0_g0_19:50:170
121500ksoftirqd/1121550irq/30-eth0_g0_00:15:241
252792490sleep1121450irq/29-eth0_g0_21:48:481
180842490sleep1121550irq/30-eth0_g0_23:30:241
121450480irq/29-eth0_g0_26312-21if_eth019:40:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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