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2026-07-17 - 15:53

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 Fri Jul 17, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1658121310sleep0121650irq/29-eth0_g0_09:30:310
2960421280sleep1121750irq/30-eth0_g0_12:37:241
1211160ksoftirqd/1121750irq/30-eth0_g0_11:40:151
1211140ksoftirqd/1121750irq/30-eth0_g0_09:26:221
121910ksoftirqd/1121750irq/30-eth0_g0_12:25:301
325392820sleep1121650irq/29-eth0_g0_10:35:591
172992800sleep1121750irq/30-eth0_g0_11:46:321
148302710sleep1121650irq/29-eth0_g0_11:36:141
121690ksoftirqd/1121750irq/30-eth0_g0_11:26:271
301212620sleep0121650irq/29-eth0_g0_10:26:180
96102570sleep1121750irq/30-eth0_g0_11:13:111
96102570sleep1121750irq/30-eth0_g0_11:13:111
121560ksoftirqd/1121650irq/29-eth0_g0_11:30:230
294312540sleep0121650irq/29-eth0_g0_12:35:210
121540ksoftirqd/1121750irq/30-eth0_g0_10:31:431
121460ksoftirqd/1121750irq/30-eth0_g0_12:29:171
121460ksoftirqd/1121750irq/30-eth0_g0_10:09:291
214332450sleep1121750irq/30-eth0_g0_09:50:011
121750450irq/30-eth0_g0_1219-21kworker/1:211:19:361
121450ksoftirqd/1121650irq/29-eth0_g0_12:20:431
121450ksoftirqd/1121650irq/29-eth0_g0_11:01:581
121450ksoftirqd/1121650irq/29-eth0_g0_09:11:000
121650440irq/29-eth0_g0_31ksoftirqd/011:17:590
121650440irq/29-eth0_g0_2171-21timerandwakeup10:43:090
121650440irq/29-eth0_g0_13-21kworker/0:111:03:010
121440ksoftirqd/1121750irq/30-eth0_g0_11:09:031
121440ksoftirqd/1121750irq/30-eth0_g0_11:09:031
121440ksoftirqd/1121750irq/30-eth0_g0_10:14:471
121440ksoftirqd/1121750irq/30-eth0_g0_10:04:031
121440ksoftirqd/1121750irq/30-eth0_g0_10:01:560
121440ksoftirqd/1121650irq/29-eth0_g0_09:15:381
121750430irq/30-eth0_g0_1219-21kworker/1:209:53:241
121750430irq/30-eth0_g0_1219-21kworker/1:209:33:291
121650430irq/29-eth0_g0_31ksoftirqd/011:58:100
121650430irq/29-eth0_g0_1964-21runrttasks08:47:150
121650430irq/29-eth0_g0_13-21kworker/0:110:54:110
121430ksoftirqd/1121750irq/30-eth0_g0_12:14:571
121430ksoftirqd/1121750irq/30-eth0_g0_09:17:570
121430ksoftirqd/1121650irq/29-eth0_g0_10:45:321
121750420irq/30-eth0_g0_1219-21kworker/1:210:19:561
121650420irq/29-eth0_g0_121ksoftirqd/109:28:231
121420ksoftirqd/1121650irq/29-eth0_g0_09:46:320
121750410irq/30-eth0_g0_1219-21kworker/1:209:18:091
121750410irq/30-eth0_g0_121ksoftirqd/111:10:230
121750410irq/30-eth0_g0_121ksoftirqd/111:10:230
121650410irq/29-eth0_g0_31ksoftirqd/012:29:120
121650410irq/29-eth0_g0_31ksoftirqd/010:04:380
121650410irq/29-eth0_g0_31ksoftirqd/009:38:100
121650410irq/29-eth0_g0_1964-21runrttasks07:05:390
121650410irq/29-eth0_g0_121ksoftirqd/111:38:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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