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2026-08-01 - 20:26

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 Aug 01, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1456421670sleep1121650irq/29-eth0_g0_10:56:031
1456421670sleep1121650irq/29-eth0_g0_10:56:031
30002660sleep0121650irq/29-eth0_g0_12:21:110
30002660sleep0121650irq/29-eth0_g0_12:21:110
295972540sleep1121650irq/29-eth0_g0_09:43:211
16422520sleep0121650irq/29-eth0_g0_12:14:520
219852510sleep0121650irq/29-eth0_g0_11:26:500
212532510sleep1121750irq/30-eth0_g0_09:11:141
151782500sleep1121750irq/30-eth0_g0_10:57:301
121500ksoftirqd/1121750irq/30-eth0_g0_11:52:261
121500ksoftirqd/1121750irq/30-eth0_g0_09:39:581
237922490sleep1121750irq/30-eth0_g0_09:22:111
23099994835cyclictest21817-21awk09:12:291
121650470irq/29-eth0_g0_1964-21runrttasks10:27:550
203492460sleep0121650irq/29-eth0_g0_11:17:340
121650460irq/29-eth0_g0_22587-21unixbench_multi07:02:320
121460ksoftirqd/1121650irq/29-eth0_g0_10:00:531
121750450irq/30-eth0_g0_121ksoftirqd/110:22:271
183142440sleep1121750irq/30-eth0_g0_11:11:551
121650440irq/29-eth0_g0_9986-21/usr/sbin/munin10:37:250
121650440irq/29-eth0_g0_55182sleep112:31:591
121650440irq/29-eth0_g0_31ksoftirqd/009:22:240
121650440irq/29-eth0_g0_13-21kworker/0:112:10:190
121440ksoftirqd/1121750irq/30-eth0_g0_10:47:120
121440ksoftirqd/1121650irq/29-eth0_g0_12:04:541
121440ksoftirqd/1121650irq/29-eth0_g0_11:36:141
121440ksoftirqd/1121650irq/29-eth0_g0_11:36:141
121650430irq/29-eth0_g0_31ksoftirqd/009:30:470
121650430irq/29-eth0_g0_13-21kworker/0:109:55:080
121750420irq/30-eth0_g0_16452-21processes11:02:321
121750420irq/30-eth0_g0_121ksoftirqd/110:39:251
121650420irq/29-eth0_g0_13-21kworker/0:109:57:340
2309999411cyclictest1227-21grep07:47:341
121750410irq/30-eth0_g0_121ksoftirqd/111:17:251
121750410irq/30-eth0_g0_121ksoftirqd/111:12:231
121750410irq/30-eth0_g0_121ksoftirqd/110:15:101
121650410irq/29-eth0_g0_31ksoftirqd/011:35:550
121650410irq/29-eth0_g0_31ksoftirqd/011:35:550
121650410irq/29-eth0_g0_27564-21unixbench_singl07:22:330
121650410irq/29-eth0_g0_13-21kworker/0:111:57:140
121410ksoftirqd/1121650irq/29-eth0_g0_11:56:320
2309999401cyclictest311542sleep109:52:121
2309999401cyclictest311542sleep109:52:121
2309999401cyclictest28176-21df07:27:251
2309999401cyclictest1877-21cat12:17:121
121750400irq/30-eth0_g0_20107-21diskmemload09:28:181
121750400irq/30-eth0_g0_1219-21kworker/1:210:43:591
121750400irq/30-eth0_g0_1219-21kworker/1:210:17:161
121750400irq/30-eth0_g0_1219-21kworker/1:210:04:191
121750400irq/30-eth0_g0_121ksoftirqd/109:36:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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