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2026-06-11 - 03:11

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 Thu Jun 11, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1399721420sleep0121750irq/30-eth0_g0_23:21:500
121910ksoftirqd/1293102sleep122:12:171
121910ksoftirqd/1293102sleep122:12:171
121910ksoftirqd/1121750irq/30-eth0_g0_23:59:050
121860ksoftirqd/1121650irq/29-eth0_g0_22:33:170
121820ksoftirqd/1121750irq/30-eth0_g0_22:57:571
121790ksoftirqd/1121750irq/30-eth0_g0_19:14:181
96242760sleep1121750irq/30-eth0_g0_23:04:271
121720ksoftirqd/1121750irq/30-eth0_g0_00:26:191
61082700sleep1121750irq/30-eth0_g0_22:49:321
281352680sleep1121650irq/29-eth0_g0_22:07:511
121630ksoftirqd/1121750irq/30-eth0_g0_22:48:521
121600ksoftirqd/1121650irq/29-eth0_g0_23:59:341
327612580chrt121650irq/29-eth0_g0_22:24:411
121580ksoftirqd/1121650irq/29-eth0_g0_21:59:050
189842550sleep1121650irq/29-eth0_g0_21:29:331
121520ksoftirqd/1121650irq/29-eth0_g0_21:43:380
121490ksoftirqd/115956-21ps19:04:341
40202470chrt121750irq/30-eth0_g0_22:39:430
121650470irq/29-eth0_g0_1964-21runrttasks19:06:560
121470ksoftirqd/1121750irq/30-eth0_g0_21:17:131
121470ksoftirqd/1121650irq/29-eth0_g0_00:20:080
121470ksoftirqd/1121650irq/29-eth0_g0_00:20:080
121650460irq/29-eth0_g0_31ksoftirqd/021:29:360
121650460irq/29-eth0_g0_13-21kworker/0:121:22:270
121460ksoftirqd/1121750irq/30-eth0_g0_21:54:191
121460ksoftirqd/1121650irq/29-eth0_g0_00:24:131
121460ksoftirqd/1121650irq/29-eth0_g0_00:24:131
121650450irq/29-eth0_g0_0-21swapper/020:59:350
121450ksoftirqd/1121750irq/30-eth0_g0_00:11:211
121450ksoftirqd/1121650irq/29-eth0_g0_21:37:561
121750440irq/30-eth0_g0_121ksoftirqd/122:20:041
121440ksoftirqd/1121750irq/30-eth0_g0_23:39:320
121440ksoftirqd/1121650irq/29-eth0_g0_23:12:371
121750430irq/30-eth0_g0_1219-21kworker/1:223:44:241
121750430irq/30-eth0_g0_1219-21kworker/1:222:01:001
121750430irq/30-eth0_g0_1219-21kworker/1:221:26:091
121750430irq/30-eth0_g0_1219-21kworker/1:200:08:351
139442420sleep1121650irq/29-eth0_g0_23:21:121
121750420irq/30-eth0_g0_13554-21diskmemload23:37:081
121750420irq/30-eth0_g0_1219-21kworker/1:223:02:241
121750420irq/30-eth0_g0_1219-21kworker/1:221:52:221
121750420irq/30-eth0_g0_1219-21kworker/1:221:12:331
121750420irq/30-eth0_g0_1219-21kworker/1:200:34:401
121750420irq/30-eth0_g0_121ksoftirqd/120:03:511
121650420irq/29-eth0_g0_31ksoftirqd/023:16:300
121650420irq/29-eth0_g0_13-21kworker/0:123:44:560
121650420irq/29-eth0_g0_13-21kworker/0:122:52:570
121650420irq/29-eth0_g0_121ksoftirqd/121:47:120
121650420irq/29-eth0_g0_0-21swapper/019:09:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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