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2026-07-02 - 12:32

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 Jul 02, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
767321410sleep1121650irq/29-eth0_g0_21:17:191
1211350ksoftirqd/1121750irq/30-eth0_g0_00:13:501
45872850sleep0121750irq/30-eth0_g0_23:16:150
121830ksoftirqd/1121750irq/30-eth0_g0_22:39:011
261662770sleep1121750irq/30-eth0_g0_22:33:251
121750ksoftirqd/1121650irq/29-eth0_g0_23:03:390
121700ksoftirqd/1105362sleep021:28:390
175152690sleep1121650irq/29-eth0_g0_21:57:411
94492680sleep1121650irq/29-eth0_g0_23:35:421
94492680sleep1121650irq/29-eth0_g0_23:35:421
105982640sleep1121650irq/29-eth0_g0_23:39:491
316852620sleep0121650irq/29-eth0_g0_22:53:430
121610ksoftirqd/1121750irq/30-eth0_g0_22:50:330
121520ksoftirqd/1121750irq/30-eth0_g0_00:23:511
121510ksoftirqd/1121750irq/30-eth0_g0_22:22:011
121500ksoftirqd/1121650irq/29-eth0_g0_22:29:260
247112490sleep0121650irq/29-eth0_g0_22:25:510
121480ksoftirqd/1121750irq/30-eth0_g0_00:29:590
121470ksoftirqd/1121750irq/30-eth0_g0_23:51:191
121470ksoftirqd/1121750irq/30-eth0_g0_23:25:161
121470ksoftirqd/1121650irq/29-eth0_g0_21:04:561
121750450irq/30-eth0_g0_11243-21chrt21:30:581
121450ksoftirqd/1121750irq/30-eth0_g0_23:04:261
121450ksoftirqd/1121750irq/30-eth0_g0_22:10:531
121450ksoftirqd/1121750irq/30-eth0_g0_21:11:201
121450ksoftirqd/1121650irq/29-eth0_g0_19:11:161
121440ksoftirqd/1121750irq/30-eth0_g0_22:42:230
121440ksoftirqd/1121650irq/29-eth0_g0_19:32:581
121650430irq/29-eth0_g0_0-21swapper/019:03:440
121430ksoftirqd/1121750irq/30-eth0_g0_22:12:210
121750420irq/30-eth0_g0_1219-21kworker/1:222:00:501
121420ksoftirqd/1121650irq/29-eth0_g0_22:45:001
121420ksoftirqd/1121650irq/29-eth0_g0_22:45:001
830299412cyclictest3640-21grep20:58:461
830299412cyclictest3640-21grep20:58:461
121750410irq/30-eth0_g0_1219-21kworker/1:200:12:381
121650410irq/29-eth0_g0_13-21kworker/0:123:38:160
121650410irq/29-eth0_g0_13-21kworker/0:123:38:160
121650410irq/29-eth0_g0_13-21kworker/0:123:11:210
8302994027cyclictest1964-21runrttasks22:49:401
235452400sleep0121650irq/29-eth0_g0_00:33:390
121750400irq/30-eth0_g0_13769-21missed_timers23:53:401
121750400irq/30-eth0_g0_1219-21kworker/1:222:14:471
121650400irq/29-eth0_g0_1964-21runrttasks20:05:510
121650400irq/29-eth0_g0_1964-21runrttasks20:05:510
121650400irq/29-eth0_g0_13-21kworker/0:122:02:000
121650400irq/29-eth0_g0_13-21kworker/0:121:55:480
121650400irq/29-eth0_g0_13-21kworker/0:121:18:300
121650400irq/29-eth0_g0_13-21kworker/0:121:08:500
121650400irq/29-eth0_g0_121ksoftirqd/123:25:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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