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2026-06-07 - 01:25

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 Jun 06, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1752821260sleep1121650irq/29-eth0_g0_21:40:441
2562021230sleep1121650irq/29-eth0_g0_00:27:121
1211230ksoftirqd/1121750irq/30-eth0_g0_22:29:481
1211230ksoftirqd/1121750irq/30-eth0_g0_22:29:481
147262780sleep0121650irq/29-eth0_g0_23:43:260
121750ksoftirqd/1121750irq/30-eth0_g0_21:59:001
60452670sleep1121650irq/29-eth0_g0_23:07:111
273662620sleep0121750irq/30-eth0_g0_20:09:410
269742620sleep0121750irq/30-eth0_g0_22:19:450
179212580sleep0121750irq/30-eth0_g0_23:54:480
182082540sleep1121750irq/30-eth0_g0_21:44:431
121650540irq/29-eth0_g0_1239699cyclictest19:44:470
121540ksoftirqd/1121750irq/30-eth0_g0_00:01:251
121530ksoftirqd/1121750irq/30-eth0_g0_00:26:150
121650520irq/29-eth0_g0_1239699cyclictest23:34:380
121520ksoftirqd/1121750irq/30-eth0_g0_22:49:490
121510ksoftirqd/1121750irq/30-eth0_g0_22:38:420
121500ksoftirqd/1121750irq/30-eth0_g0_21:04:460
121750490irq/30-eth0_g0_1239699cyclictest22:54:490
121750490irq/30-eth0_g0_1239699cyclictest21:19:020
121750490irq/30-eth0_g0_1239699cyclictest20:44:430
121490ksoftirqd/11239799cyclictest21:30:081
121650480irq/29-eth0_g0_1239699cyclictest22:09:490
121480ksoftirqd/11239699cyclictest23:14:460
121480ksoftirqd/1121750irq/30-eth0_g0_23:39:131
121750470irq/30-eth0_g0_1239699cyclictest21:59:060
121750470irq/30-eth0_g0_1239699cyclictest19:59:390
121750470irq/30-eth0_g0_1239699cyclictest00:13:240
121750470irq/30-eth0_g0_1239699cyclictest00:13:240
121650470irq/29-eth0_g0_1239699cyclictest21:37:140
121650470irq/29-eth0_g0_121ksoftirqd/121:34:140
121470ksoftirqd/11239699cyclictest21:20:120
121750460irq/30-eth0_g0_1239699cyclictest21:52:450
121750460irq/30-eth0_g0_1239699cyclictest21:27:420
121460ksoftirqd/1121750irq/30-eth0_g0_23:47:241
121750450irq/30-eth0_g0_1239699cyclictest23:52:440
121750450irq/30-eth0_g0_1239699cyclictest23:21:040
121750450irq/30-eth0_g0_1239699cyclictest00:23:280
121650450irq/29-eth0_g0_31ksoftirqd/021:39:470
121650450irq/29-eth0_g0_1239699cyclictest23:31:500
121450ksoftirqd/11239699cyclictest23:01:410
121450ksoftirqd/1121750irq/30-eth0_g0_22:48:511
121450ksoftirqd/1121750irq/30-eth0_g0_21:11:271
121750440irq/30-eth0_g0_1239699cyclictest22:26:430
121750440irq/30-eth0_g0_1239699cyclictest00:32:400
121650440irq/29-eth0_g0_31ksoftirqd/020:39:410
121650440irq/29-eth0_g0_31ksoftirqd/020:39:410
121440ksoftirqd/1121750irq/30-eth0_g0_23:53:431
121440ksoftirqd/1121750irq/30-eth0_g0_00:10:421
121440ksoftirqd/1121750irq/30-eth0_g0_00:10:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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