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2026-04-28 - 14:22

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 Tue Apr 28, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
174582900sleep0121450irq/29-eth0_g0_12:11:340
325042480sleep1121450irq/29-eth0_g0_09:20:361
121550470irq/30-eth0_g0_27814-21latency_hist08:34:331
121550460irq/30-eth0_g0_1221-21kworker/1:212:34:281
121460ksoftirqd/1121450irq/29-eth0_g0_11:44:051
121460ksoftirqd/1121450irq/29-eth0_g0_10:38:261
121550450irq/30-eth0_g0_1221-21kworker/1:209:18:481
121450ksoftirqd/1121550irq/30-eth0_g0_10:29:380
31262440sleep0121450irq/29-eth0_g0_09:50:270
121550440irq/30-eth0_g0_1221-21kworker/1:212:19:581
121550440irq/30-eth0_g0_1221-21kworker/1:212:19:581
121450440irq/29-eth0_g0_13-21kworker/0:111:20:030
121550430irq/30-eth0_g0_1221-21kworker/1:211:03:081
121450430irq/29-eth0_g0_47412sleep110:06:311
121450430irq/29-eth0_g0_31ksoftirqd/009:47:210
121450430irq/29-eth0_g0_27786-21latency_hist08:34:320
121450430irq/29-eth0_g0_13-21kworker/0:111:04:420
95232420sleep0121450irq/29-eth0_g0_10:53:570
19109994237cyclictest25223-21latency_hist08:09:321
121450420irq/29-eth0_g0_5002-21munin-run10:09:310
121550410irq/30-eth0_g0_1221-21kworker/1:212:29:161
121550400irq/30-eth0_g0_1221-21kworker/1:211:47:381
121550400irq/30-eth0_g0_1221-21kworker/1:211:14:401
121550400irq/30-eth0_g0_1221-21kworker/1:210:19:351
121550400irq/30-eth0_g0_1221-21kworker/1:210:18:301
121550400irq/30-eth0_g0_1221-21kworker/1:209:52:401
121550400irq/30-eth0_g0_121ksoftirqd/111:38:131
121450400irq/29-eth0_g0_31ksoftirqd/012:05:260
121450400irq/29-eth0_g0_2487-21latency_hist09:44:320
121450400irq/29-eth0_g0_13-21kworker/0:110:45:330
121450400irq/29-eth0_g0_13-21kworker/0:109:58:140
121450400irq/29-eth0_g0_13-21kworker/0:109:28:420
121450400irq/29-eth0_g0_13-21kworker/0:109:17:020
121550390irq/30-eth0_g0_96852sleep110:54:551
121550390irq/30-eth0_g0_8318-21chrt10:41:441
121550390irq/30-eth0_g0_1221-21kworker/1:212:08:081
121550390irq/30-eth0_g0_1221-21kworker/1:211:14:011
121550390irq/30-eth0_g0_1221-21kworker/1:210:29:101
121550390irq/30-eth0_g0_1221-21kworker/1:210:04:061
121550390irq/30-eth0_g0_0-21swapper/111:58:141
121450390irq/29-eth0_g0_31ksoftirqd/012:24:540
121450390irq/29-eth0_g0_31ksoftirqd/010:55:570
121450390irq/29-eth0_g0_13-21kworker/0:112:35:170
121450390irq/29-eth0_g0_13-21kworker/0:111:41:320
121450390irq/29-eth0_g0_13-21kworker/0:111:33:210
121450390irq/29-eth0_g0_13-21kworker/0:111:00:170
121450390irq/29-eth0_g0_13-21kworker/0:110:09:550
121450390irq/29-eth0_g0_13-21kworker/0:109:35:460
121450390irq/29-eth0_g0_13-21kworker/0:109:10:580
121390ksoftirqd/1121450irq/29-eth0_g0_08:43:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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