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2026-07-08 - 14:29

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 Wed Jul 08, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1303921350sleep1121650irq/29-eth0_g0_11:49:321
1303921350sleep1121650irq/29-eth0_g0_11:49:321
121810ksoftirqd/1121750irq/30-eth0_g0_10:23:031
240952670sleep1121650irq/29-eth0_g0_12:35:001
121670ksoftirqd/1120332chrt07:18:560
121660ksoftirqd/1121750irq/30-eth0_g0_12:23:380
96832640sleep1121750irq/30-eth0_g0_09:23:241
322042640sleep0121650irq/29-eth0_g0_10:57:090
197682600sleep1121750irq/30-eth0_g0_10:04:491
197682600sleep1121750irq/30-eth0_g0_10:04:491
121570ksoftirqd/1304242sleep010:48:280
76192530sleep1121750irq/30-eth0_g0_09:13:321
121530ksoftirqd/1121750irq/30-eth0_g0_11:54:281
121650520irq/29-eth0_g0_31ksoftirqd/008:03:310
121520ksoftirqd/1121650irq/29-eth0_g0_12:19:300
151192500sleep0121750irq/30-eth0_g0_09:47:400
121650500irq/29-eth0_g0_31ksoftirqd/009:08:280
135602480sleep1121650irq/29-eth0_g0_09:38:461
135602480sleep1121650irq/29-eth0_g0_09:38:461
121480ksoftirqd/1121750irq/30-eth0_g0_10:34:241
121470ksoftirqd/1121750irq/30-eth0_g0_09:09:311
121470ksoftirqd/1121650irq/29-eth0_g0_11:36:071
175212460sleep0121650irq/29-eth0_g0_09:57:100
121750460irq/30-eth0_g0_121ksoftirqd/110:23:301
121450ksoftirqd/1121650irq/29-eth0_g0_11:23:021
121450ksoftirqd/1121650irq/29-eth0_g0_08:39:141
121650440irq/29-eth0_g0_1964-21runrttasks10:40:340
121440ksoftirqd/18215-21unixbench_multi07:03:341
121440ksoftirqd/1121750irq/30-eth0_g0_09:53:351
121440ksoftirqd/1121650irq/29-eth0_g0_10:17:011
121440ksoftirqd/1121650irq/29-eth0_g0_08:15:021
121440ksoftirqd/1121650irq/29-eth0_g0_08:01:291
121430ksoftirqd/1121750irq/30-eth0_g0_11:54:590
94052420sleep0121750irq/30-eth0_g0_11:34:550
121750420irq/30-eth0_g0_31ksoftirqd/012:03:230
121750420irq/30-eth0_g0_1219-21kworker/1:211:29:131
121650420irq/29-eth0_g0_7588-21/usr/sbin/munin07:03:320
121650420irq/29-eth0_g0_31ksoftirqd/012:11:230
121650420irq/29-eth0_g0_31ksoftirqd/009:40:100
121650420irq/29-eth0_g0_31ksoftirqd/009:40:100
121420ksoftirqd/1121650irq/29-eth0_g0_09:48:471
121750410irq/30-eth0_g0_20470-21taskset12:20:331
121750410irq/30-eth0_g0_1219-21kworker/1:209:18:491
121650410irq/29-eth0_g0_31ksoftirqd/010:18:000
121650410irq/29-eth0_g0_13-21kworker/0:111:49:130
121650410irq/29-eth0_g0_13-21kworker/0:111:49:130
121650410irq/29-eth0_g0_10401-21tail11:38:320
121410ksoftirqd/1121750irq/30-eth0_g0_12:02:471
872999402cyclictest28355-21sort08:28:091
190792400sleep0121650irq/29-eth0_g0_10:03:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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