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2026-07-14 - 15:39

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 Jul 14, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2985221440sleep1121750irq/30-eth0_g0_12:24:481
80532790sleep0121750irq/30-eth0_g0_08:43:160
60042750sleep1121750irq/30-eth0_g0_10:48:111
301122750sleep1121750irq/30-eth0_g0_08:02:561
204102700sleep1121750irq/30-eth0_g0_09:33:161
121690ksoftirqd/1121650irq/29-eth0_g0_10:28:111
121650ksoftirqd/11661099cyclictest07:56:121
205652590sleep1121750irq/30-eth0_g0_11:48:071
121540ksoftirqd/1121750irq/30-eth0_g0_10:17:461
121510ksoftirqd/1121650irq/29-eth0_g0_10:58:120
121500ksoftirqd/1121750irq/30-eth0_g0_09:42:481
157192490sleep0121750irq/30-eth0_g0_09:14:410
121480ksoftirqd/1121750irq/30-eth0_g0_12:20:481
121480ksoftirqd/1121750irq/30-eth0_g0_11:17:221
121460ksoftirqd/1121750irq/30-eth0_g0_12:32:011
121460ksoftirqd/1121750irq/30-eth0_g0_10:59:141
121460ksoftirqd/1121650irq/29-eth0_g0_11:10:110
121460ksoftirqd/1121650irq/29-eth0_g0_07:42:371
263452450sleep0121650irq/29-eth0_g0_12:11:460
121650450irq/29-eth0_g0_121ksoftirqd/110:35:510
121650450irq/29-eth0_g0_121ksoftirqd/110:35:510
121450ksoftirqd/1121750irq/30-eth0_g0_10:26:071
121450ksoftirqd/1121750irq/30-eth0_g0_09:29:141
121450ksoftirqd/1121650irq/29-eth0_g0_12:37:341
121650440irq/29-eth0_g0_31ksoftirqd/012:33:170
121650440irq/29-eth0_g0_31ksoftirqd/009:10:380
121440ksoftirqd/1121650irq/29-eth0_g0_10:20:061
121440ksoftirqd/1121650irq/29-eth0_g0_09:50:320
121750430irq/30-eth0_g0_1219-21kworker/1:210:11:571
121650430irq/29-eth0_g0_4912sleep010:25:400
121650430irq/29-eth0_g0_31ksoftirqd/009:34:490
121430ksoftirqd/1121650irq/29-eth0_g0_10:50:060
121430ksoftirqd/1121650irq/29-eth0_g0_07:07:561
121430ksoftirqd/1121650irq/29-eth0_g0_07:07:561
121750420irq/30-eth0_g0_1219-21kworker/1:210:46:501
121650420irq/29-eth0_g0_16106-21grep07:03:140
121650420irq/29-eth0_g0_16106-21grep07:03:140
121420ksoftirqd/1121750irq/30-eth0_g0_10:53:571
121420ksoftirqd/1121650irq/29-eth0_g0_09:21:331
121750410irq/30-eth0_g0_254322sleep109:53:481
121750410irq/30-eth0_g0_1219-21kworker/1:209:24:061
121650410irq/29-eth0_g0_31ksoftirqd/011:48:590
1661099401cyclictest26146-21latency09:58:091
121750400irq/30-eth0_g0_13-21kworker/0:109:22:110
121750400irq/30-eth0_g0_1219-21kworker/1:211:21:431
121750400irq/30-eth0_g0_1219-21kworker/1:209:11:221
121750400irq/30-eth0_g0_121ksoftirqd/112:03:451
121650400irq/29-eth0_g0_31472-21unixbench_singl10:18:160
121650400irq/29-eth0_g0_31ksoftirqd/012:14:510
121650400irq/29-eth0_g0_13-21kworker/0:112:27:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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