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2025-11-24 - 00:56

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 Sun Nov 23, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2159621340sleep0121650irq/29-eth0_g0_09:23:590
299312980sleep1121650irq/29-eth0_g0_09:56:031
121960ksoftirqd/1121750irq/30-eth0_g0_11:54:550
121850ksoftirqd/1121650irq/29-eth0_g0_11:50:060
121660ksoftirqd/1121650irq/29-eth0_g0_10:05:131
121660ksoftirqd/1121650irq/29-eth0_g0_10:05:131
43302580sleep0121650irq/29-eth0_g0_12:35:160
121540ksoftirqd/1121750irq/30-eth0_g0_10:56:491
121520ksoftirqd/1121750irq/30-eth0_g0_11:40:030
121500ksoftirqd/1121750irq/30-eth0_g0_08:24:011
121490ksoftirqd/1121750irq/30-eth0_g0_10:49:130
22042480sleep0121750irq/30-eth0_g0_12:29:050
121480ksoftirqd/1121750irq/30-eth0_g0_12:33:460
121480ksoftirqd/1121750irq/30-eth0_g0_08:40:490
121750460irq/30-eth0_g0_1219-21kworker/1:211:38:161
121460ksoftirqd/1121750irq/30-eth0_g0_11:30:051
121460ksoftirqd/1121650irq/29-eth0_g0_10:49:471
121650450irq/29-eth0_g0_20913-21cyclictest07:09:430
121750440irq/30-eth0_g0_1219-21kworker/1:210:43:531
121440ksoftirqd/1121750irq/30-eth0_g0_12:04:100
121440ksoftirqd/1121750irq/30-eth0_g0_11:24:430
121440ksoftirqd/1121750irq/30-eth0_g0_11:10:541
121440ksoftirqd/1121750irq/30-eth0_g0_10:59:461
121440ksoftirqd/1121750irq/30-eth0_g0_09:52:060
121440ksoftirqd/1121650irq/29-eth0_g0_12:15:031
121750430irq/30-eth0_g0_1219-21kworker/1:212:01:491
121750430irq/30-eth0_g0_1219-21kworker/1:209:36:161
121650430irq/29-eth0_g0_0-21swapper/009:59:560
121750420irq/30-eth0_g0_1219-21kworker/1:211:29:111
121750420irq/30-eth0_g0_1219-21kworker/1:211:29:111
121750420irq/30-eth0_g0_1219-21kworker/1:210:20:511
121650420irq/29-eth0_g0_295552sleep012:07:260
121420ksoftirqd/1121750irq/30-eth0_g0_10:15:071
121420ksoftirqd/1121650irq/29-eth0_g0_09:47:350
20916994128cyclictest17880-21missed_timers11:19:581
121750410irq/30-eth0_g0_1219-21kworker/1:212:10:041
121750410irq/30-eth0_g0_121ksoftirqd/112:25:591
121650410irq/29-eth0_g0_1894-21runrttasks07:21:050
121650410irq/29-eth0_g0_13-21kworker/0:112:10:380
121650410irq/29-eth0_g0_13-21kworker/0:111:16:330
121650410irq/29-eth0_g0_121ksoftirqd/111:50:011
20916994027cyclictest5202-21grep08:15:061
20916994026cyclictest14288-21runrttasks08:54:431
121750400irq/30-eth0_g0_1219-21kworker/1:211:44:561
121750400irq/30-eth0_g0_121ksoftirqd/111:08:051
121650400irq/29-eth0_g0_25505-21sed09:39:550
121650400irq/29-eth0_g0_1894-21runrttasks10:22:190
121650400irq/29-eth0_g0_13-21kworker/0:111:29:570
121650400irq/29-eth0_g0_13-21kworker/0:110:57:120
121650400irq/29-eth0_g0_13-21kworker/0:109:11:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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