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2025-12-01 - 06:01

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 50 highest latencies:
System rack3slot5s.osadl.org (updated Mon Dec 01, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3213121390sleep1121750irq/29-eth0_g0_23:24:321
3213121390sleep1121750irq/29-eth0_g0_23:24:321
3144821310sleep1121750irq/29-eth0_g0_22:04:101
1808521300sleep1121750irq/29-eth0_g0_21:30:161
2305921140sleep1121750irq/29-eth0_g0_23:01:171
104132990sleep1121850irq/30-eth0_g0_22:30:161
211932980sleep1121850irq/30-eth0_g0_00:17:331
121970ksoftirqd/1121850irq/30-eth0_g0_00:00:570
121970ksoftirqd/1121850irq/30-eth0_g0_00:00:570
63362940sleep0121750irq/29-eth0_g0_22:20:240
121930ksoftirqd/1121850irq/30-eth0_g0_21:35:531
38612920sleep0121850irq/30-eth0_g0_23:34:340
128112920sleep0121850irq/30-eth0_g0_20:00:050
121900ksoftirqd/1121850irq/30-eth0_g0_19:15:091
121880ksoftirqd/1121850irq/30-eth0_g0_22:09:510
121880ksoftirqd/1121850irq/30-eth0_g0_21:20:080
121870ksoftirqd/1121850irq/30-eth0_g0_22:44:310
121870ksoftirqd/1121850irq/30-eth0_g0_21:41:430
121850ksoftirqd/1121850irq/30-eth0_g0_23:15:111
121850ksoftirqd/1121850irq/30-eth0_g0_19:33:030
121850ksoftirqd/1121850irq/30-eth0_g0_19:33:030
121820ksoftirqd/1121850irq/30-eth0_g0_21:15:091
121820ksoftirqd/1121850irq/30-eth0_g0_20:50:111
121810ksoftirqd/1121850irq/30-eth0_g0_22:27:331
121810ksoftirqd/1121850irq/30-eth0_g0_20:30:121
121810ksoftirqd/1121850irq/30-eth0_g0_20:30:121
121800ksoftirqd/1121850irq/30-eth0_g0_20:10:160
270332790sleep0121750irq/29-eth0_g0_23:10:410
201492780sleep0121750irq/29-eth0_g0_00:15:030
121780ksoftirqd/1121850irq/30-eth0_g0_21:28:031
24052770sleep1121850irq/30-eth0_g0_19:35:041
223422740sleep0121850irq/30-eth0_g0_23:00:080
56802730sleep1121850irq/30-eth0_g0_23:38:371
119572720sleep0121850irq/30-eth0_g0_23:53:580
217852710sleep0121750irq/29-eth0_g0_22:59:240
121710ksoftirqd/1121850irq/30-eth0_g0_23:34:341
48982700sleep1121750irq/29-eth0_g0_22:17:511
121680ksoftirqd/1121850irq/30-eth0_g0_00:09:410
79972670sleep0121750irq/29-eth0_g0_22:25:100
121660ksoftirqd/1121850irq/30-eth0_g0_23:59:521
218302620sleep1121850irq/30-eth0_g0_21:40:081
265802610sleep0121850irq/30-eth0_g0_20:33:360
265802610sleep0121850irq/30-eth0_g0_20:33:360
150162590sleep1121850irq/30-eth0_g0_22:42:061
119842570chrt121750irq/29-eth0_g0_21:15:350
121510ksoftirqd/1121850irq/30-eth0_g0_23:40:120
130922500sleep0121750irq/29-eth0_g0_22:37:380
121500ksoftirqd/1121850irq/30-eth0_g0_21:57:321
121500ksoftirqd/1121850irq/30-eth0_g0_19:06:330
121500ksoftirqd/1121850irq/30-eth0_g0_00:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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