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2026-07-11 - 14:41

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 Jul 11, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121960ksoftirqd/1121750irq/30-eth0_g0_12:23:210
121930ksoftirqd/1121750irq/30-eth0_g0_10:33:331
121850ksoftirqd/1121750irq/30-eth0_g0_07:06:561
121800ksoftirqd/1121750irq/30-eth0_g0_10:23:220
248132740sleep1121750irq/30-eth0_g0_11:58:181
299502660sleep0121650irq/29-eth0_g0_12:18:220
121640ksoftirqd/1121750irq/30-eth0_g0_11:15:010
97882600sleep0121750irq/30-eth0_g0_10:58:100
121570ksoftirqd/1121750irq/30-eth0_g0_09:38:011
260232560sleep1121750irq/30-eth0_g0_09:51:141
292452520sleep1121750irq/30-eth0_g0_12:17:141
121510ksoftirqd/1230622sleep011:51:390
121490ksoftirqd/1121750irq/30-eth0_g0_11:53:220
121490ksoftirqd/1121750irq/30-eth0_g0_10:53:411
168012460sleep1121650irq/29-eth0_g0_11:25:061
168012460sleep1121650irq/29-eth0_g0_11:25:061
121460ksoftirqd/1121750irq/30-eth0_g0_12:33:201
121460ksoftirqd/1121750irq/30-eth0_g0_12:06:221
121460ksoftirqd/1121750irq/30-eth0_g0_09:31:231
93682450sleep0121650irq/29-eth0_g0_10:54:100
121750450irq/30-eth0_g0_15302-21df09:08:141
121450ksoftirqd/1121750irq/30-eth0_g0_10:49:461
121650440irq/29-eth0_g0_17228-21/usr/sbin/munin07:03:160
121440ksoftirqd/1121750irq/30-eth0_g0_11:33:041
121440ksoftirqd/1121750irq/30-eth0_g0_10:41:071
121440ksoftirqd/1121650irq/29-eth0_g0_09:40:191
121440ksoftirqd/1121650irq/29-eth0_g0_07:46:041
121650430irq/29-eth0_g0_1958-21crond12:38:010
121430ksoftirqd/1121650irq/29-eth0_g0_09:24:581
185972420sleep1121750irq/30-eth0_g0_09:20:181
121750420irq/30-eth0_g0_1219-21kworker/1:212:08:451
121750420irq/30-eth0_g0_1219-21kworker/1:211:56:251
121750420irq/30-eth0_g0_1219-21kworker/1:210:13:421
121650420irq/29-eth0_g0_121ksoftirqd/110:31:420
121420ksoftirqd/1121650irq/29-eth0_g0_10:28:021
121650410irq/29-eth0_g0_31ksoftirqd/011:05:450
121650410irq/29-eth0_g0_1813899cyclictest09:22:050
121650410irq/29-eth0_g0_15147-21diskmemload10:47:341
121410ksoftirqd/1121750irq/30-eth0_g0_10:36:390
1813999401cyclictest8475-21chrt08:38:221
1813999401cyclictest19514-21taskset07:13:151
1813999401cyclictest0-21swapper/111:05:441
121750400irq/30-eth0_g0_1734-21chrt08:13:131
121650400irq/29-eth0_g0_31ksoftirqd/010:03:230
121650400irq/29-eth0_g0_31ksoftirqd/010:03:230
121650400irq/29-eth0_g0_13-21kworker/0:111:27:460
121650400irq/29-eth0_g0_13-21kworker/0:111:27:460
121650400irq/29-eth0_g0_13-21kworker/0:110:52:420
121650400irq/29-eth0_g0_13-21kworker/0:110:15:470
121650400irq/29-eth0_g0_13-21kworker/0:109:33:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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