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2026-03-28 - 03:43

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 Sat Mar 28, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
755521060sleep0121650irq/29-eth0_g0_23:42:570
121970ksoftirqd/1121750irq/30-eth0_g0_21:42:171
26952930sleep1121650irq/29-eth0_g0_23:23:311
95092890sleep1121650irq/29-eth0_g0_21:36:481
121880ksoftirqd/1121750irq/30-eth0_g0_20:25:091
208722770sleep1121750irq/30-eth0_g0_00:36:011
121740ksoftirqd/1121750irq/30-eth0_g0_23:41:171
121670ksoftirqd/1121750irq/30-eth0_g0_22:02:370
99882600sleep1121750irq/30-eth0_g0_23:52:451
170762540sleep0121650irq/29-eth0_g0_00:20:140
73332530sleep1121650irq/29-eth0_g0_19:15:111
121510ksoftirqd/1121750irq/30-eth0_g0_22:00:221
121650500irq/29-eth0_g0_31ksoftirqd/019:05:060
121480ksoftirqd/1121750irq/30-eth0_g0_23:17:521
121480ksoftirqd/1121750irq/30-eth0_g0_00:01:181
121480ksoftirqd/1121650irq/29-eth0_g0_21:12:210
59782470sleep0121650irq/29-eth0_g0_21:23:310
12852470sleep0121750irq/30-eth0_g0_23:16:380
121650470irq/29-eth0_g0_31ksoftirqd/022:47:440
121650450irq/29-eth0_g0_31ksoftirqd/022:50:050
121450ksoftirqd/1121750irq/30-eth0_g0_22:53:341
121450ksoftirqd/1121650irq/29-eth0_g0_21:34:250
121440ksoftirqd/1121750irq/30-eth0_g0_21:24:321
560899431cyclictest9644-21wc19:25:061
121750430irq/30-eth0_g0_203502sleep122:22:551
121750430irq/30-eth0_g0_1219-21kworker/1:221:10:231
121750430irq/30-eth0_g0_1219-21kworker/1:200:30:241
121750430irq/30-eth0_g0_1219-21kworker/1:200:30:241
121750430irq/30-eth0_g0_121ksoftirqd/120:44:531
121650430irq/29-eth0_g0_1875-21runrttasks23:11:530
121650430irq/29-eth0_g0_1875-21runrttasks21:16:000
121650420irq/29-eth0_g0_31ksoftirqd/023:27:530
121420ksoftirqd/1121750irq/30-eth0_g0_22:55:050
121420ksoftirqd/1121650irq/29-eth0_g0_19:05:131
560899412cyclictest5273-21ls23:34:531
121750410irq/30-eth0_g0_1219-21kworker/1:222:33:351
121750410irq/30-eth0_g0_1219-21kworker/1:222:33:351
121750410irq/30-eth0_g0_0-21swapper/121:58:281
121650410irq/29-eth0_g0_1875-21runrttasks20:42:480
121650410irq/29-eth0_g0_13-21kworker/0:123:48:570
121650410irq/29-eth0_g0_13-21kworker/0:100:29:120
121410ksoftirqd/1121650irq/29-eth0_g0_22:39:171
121410ksoftirqd/1121650irq/29-eth0_g0_22:39:171
121410ksoftirqd/1121650irq/29-eth0_g0_22:27:251
121750400irq/30-eth0_g0_1219-21kworker/1:221:29:261
121750400irq/30-eth0_g0_1219-21kworker/1:221:29:261
121750400irq/30-eth0_g0_121ksoftirqd/122:18:161
121750400irq/30-eth0_g0_121ksoftirqd/121:30:161
121750400irq/30-eth0_g0_121ksoftirqd/100:21:441
121650400irq/29-eth0_g0_31ksoftirqd/023:51:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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