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2026-06-09 - 02:06

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 Tue Jun 09, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2534321450sleep0121650irq/29-eth0_g0_21:15:240
121850ksoftirqd/1121650irq/29-eth0_g0_23:03:121
290142750sleep0121650irq/29-eth0_g0_21:30:110
104082720sleep0121750irq/30-eth0_g0_20:14:410
104082720sleep0121750irq/30-eth0_g0_20:14:410
238502710chrt121750irq/30-eth0_g0_21:09:431
121700ksoftirqd/1121750irq/30-eth0_g0_19:54:321
121620ksoftirqd/1121750irq/30-eth0_g0_22:16:041
121590ksoftirqd/1121650irq/29-eth0_g0_22:25:221
121590ksoftirqd/1121650irq/29-eth0_g0_22:25:221
281052560sleep1121750irq/30-eth0_g0_23:39:371
121540ksoftirqd/1121650irq/29-eth0_g0_22:50:451
121530ksoftirqd/1121750irq/30-eth0_g0_22:07:241
262542500sleep0121750irq/30-eth0_g0_23:32:450
121490ksoftirqd/1121750irq/30-eth0_g0_21:59:350
121490ksoftirqd/1121750irq/30-eth0_g0_21:26:291
121750480irq/30-eth0_g0_121ksoftirqd/121:19:411
121750470irq/30-eth0_g0_1964-21runrttasks00:09:360
121650470irq/29-eth0_g0_31988-21sort23:54:410
121750460irq/30-eth0_g0_1219-21kworker/1:222:14:191
121650460irq/29-eth0_g0_31ksoftirqd/000:16:050
121460ksoftirqd/1121650irq/29-eth0_g0_22:59:330
121650450irq/29-eth0_g0_26206-21munin-run19:09:210
121450ksoftirqd/1121750irq/30-eth0_g0_00:32:361
121450ksoftirqd/1121650irq/29-eth0_g0_21:03:321
121450ksoftirqd/1121650irq/29-eth0_g0_21:03:321
121450ksoftirqd/1121650irq/29-eth0_g0_20:30:351
297502440sleep1121750irq/30-eth0_g0_23:45:391
121440ksoftirqd/1121750irq/30-eth0_g0_21:39:380
121440ksoftirqd/1121750irq/30-eth0_g0_21:34:330
121440ksoftirqd/1121650irq/29-eth0_g0_23:26:061
121440ksoftirqd/1121650irq/29-eth0_g0_21:34:541
121750430irq/30-eth0_g0_25713-21grep19:04:421
121650430irq/29-eth0_g0_31ksoftirqd/023:08:580
121650430irq/29-eth0_g0_31ksoftirqd/021:44:380
121650430irq/29-eth0_g0_0-21swapper/019:29:330
121430ksoftirqd/1121650irq/29-eth0_g0_21:49:421
121430ksoftirqd/1121650irq/29-eth0_g0_00:09:341
17552420sleep0121650irq/29-eth0_g0_21:53:220
121750420irq/30-eth0_g0_31ksoftirqd/022:27:250
121750420irq/30-eth0_g0_31ksoftirqd/022:27:250
121750420irq/30-eth0_g0_1219-21kworker/1:221:44:411
121750420irq/30-eth0_g0_1219-21kworker/1:200:23:041
121750420irq/30-eth0_g0_1219-21kworker/1:200:23:041
121650420irq/29-eth0_g0_31ksoftirqd/021:28:250
121650420irq/29-eth0_g0_1964-21runrttasks22:16:040
121750410irq/30-eth0_g0_13-21kworker/0:123:36:000
121750410irq/30-eth0_g0_1219-21kworker/1:222:44:381
121650410irq/29-eth0_g0_31ksoftirqd/000:31:200
121650410irq/29-eth0_g0_13-21kworker/0:122:11:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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