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2026-07-26 - 18:42

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 Sun Jul 26, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211050ksoftirqd/1121750irq/30-eth0_g0_10:58:181
1211000ksoftirqd/1121750irq/30-eth0_g0_08:51:401
64902950sleep0121750irq/30-eth0_g0_10:37:510
189742930sleep1121650irq/29-eth0_g0_11:30:061
65592750sleep1121650irq/29-eth0_g0_10:37:591
121750ksoftirqd/1121750irq/30-eth0_g0_07:32:471
121750ksoftirqd/1121750irq/30-eth0_g0_07:32:471
48462700sleep0121750irq/30-eth0_g0_10:32:410
305872650sleep0121750irq/30-eth0_g0_12:17:410
121550ksoftirqd/1121650irq/29-eth0_g0_09:43:310
121490ksoftirqd/1121750irq/30-eth0_g0_11:09:581
121490ksoftirqd/1121650irq/29-eth0_g0_10:45:300
121480ksoftirqd/1121750irq/30-eth0_g0_11:37:141
275242470sleep1121650irq/29-eth0_g0_12:04:461
121470ksoftirqd/1121750irq/30-eth0_g0_10:33:401
121470ksoftirqd/1121750irq/30-eth0_g0_10:03:091
176912460sleep1121750irq/30-eth0_g0_09:12:411
121460ksoftirqd/1121750irq/30-eth0_g0_11:06:581
121460ksoftirqd/1121750irq/30-eth0_g0_10:17:241
121460ksoftirqd/1121750irq/30-eth0_g0_09:27:251
121460ksoftirqd/1121750irq/30-eth0_g0_09:07:430
121460ksoftirqd/1121650irq/29-eth0_g0_08:24:061
121650450irq/29-eth0_g0_31ksoftirqd/010:22:540
121450ksoftirqd/1121750irq/30-eth0_g0_10:45:291
121650440irq/29-eth0_g0_28480-21grep12:07:470
121650440irq/29-eth0_g0_121ksoftirqd/110:53:310
121440ksoftirqd/1121750irq/30-eth0_g0_12:28:150
121440ksoftirqd/1121750irq/30-eth0_g0_11:16:141
121440ksoftirqd/1121750irq/30-eth0_g0_09:21:541
121440ksoftirqd/1121650irq/29-eth0_g0_07:38:501
121750430irq/30-eth0_g0_1219-21kworker/1:212:23:431
121750430irq/30-eth0_g0_1219-21kworker/1:212:20:001
121750430irq/30-eth0_g0_1219-21kworker/1:211:22:371
121650430irq/29-eth0_g0_31ksoftirqd/011:10:220
121650430irq/29-eth0_g0_16130-21latency_hist09:07:260
121430ksoftirqd/1121750irq/30-eth0_g0_10:28:460
121430ksoftirqd/1121650irq/29-eth0_g0_10:21:120
121430ksoftirqd/1121650irq/29-eth0_g0_09:58:270
121750420irq/30-eth0_g0_1219-21kworker/1:212:35:411
121750420irq/30-eth0_g0_1219-21kworker/1:211:38:461
121650420irq/29-eth0_g0_1964-21runrttasks07:02:280
121650420irq/29-eth0_g0_121ksoftirqd/109:52:520
121420ksoftirqd/1121650irq/29-eth0_g0_07:17:391
121750410irq/30-eth0_g0_121ksoftirqd/110:55:441
121650410irq/29-eth0_g0_31ksoftirqd/009:25:000
121650410irq/29-eth0_g0_23239-21memory11:47:430
121650410irq/29-eth0_g0_0-21swapper/011:30:560
121410ksoftirqd/1121750irq/30-eth0_g0_11:40:300
121410ksoftirqd/1121750irq/30-eth0_g0_09:14:050
121650400irq/29-eth0_g0_22370-21unixbench_multi11:42:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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