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2026-09-13 - 10:08

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 Sep 13, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
82221070sleep1121650irq/29-eth0_g0_23:49:051
121920ksoftirqd/1121750irq/30-eth0_g0_19:00:421
46312820sleep1121750irq/30-eth0_g0_00:05:171
252992770sleep1121750irq/30-eth0_g0_23:15:471
118512760sleep1121750irq/30-eth0_g0_22:20:481
12712610sleep0121750irq/30-eth0_g0_23:50:460
237812550sleep1121750irq/30-eth0_g0_20:55:551
121550ksoftirqd/1121750irq/30-eth0_g0_20:05:521
126312540sleep0121750irq/30-eth0_g0_22:25:310
136782530sleep1121750irq/30-eth0_g0_20:15:501
121520ksoftirqd/1121750irq/30-eth0_g0_23:38:491
121520ksoftirqd/1121750irq/30-eth0_g0_00:09:011
121510ksoftirqd/1121650irq/29-eth0_g0_23:35:480
24172500sleep0121650irq/29-eth0_g0_21:41:080
121750460irq/30-eth0_g0_1219-21kworker/1:222:12:081
121460ksoftirqd/1121650irq/29-eth0_g0_23:25:141
121460ksoftirqd/1121650irq/29-eth0_g0_23:25:141
121460ksoftirqd/1121650irq/29-eth0_g0_20:01:341
121450ksoftirqd/1121750irq/30-eth0_g0_21:50:451
121450ksoftirqd/1121650irq/29-eth0_g0_20:25:561
121750440irq/30-eth0_g0_19179-21awk22:50:521
121650440irq/29-eth0_g0_53302sleep021:55:380
121440ksoftirqd/1121650irq/29-eth0_g0_22:18:551
121650430irq/29-eth0_g0_31ksoftirqd/022:34:400
121650430irq/29-eth0_g0_14750-21sort20:20:470
121430ksoftirqd/1121650irq/29-eth0_g0_19:23:061
121430ksoftirqd/1121650irq/29-eth0_g0_00:15:461
121430ksoftirqd/1121650irq/29-eth0_g0_00:15:461
121750420irq/30-eth0_g0_1219-21kworker/1:222:38:281
121750420irq/30-eth0_g0_121ksoftirqd/121:40:481
121650420irq/29-eth0_g0_31ksoftirqd/000:31:170
121650420irq/29-eth0_g0_31ksoftirqd/000:28:030
121650420irq/29-eth0_g0_13-21kworker/0:123:28:370
121650420irq/29-eth0_g0_13-21kworker/0:121:11:340
121650420irq/29-eth0_g0_121ksoftirqd/122:44:180
121420ksoftirqd/1121650irq/29-eth0_g0_23:15:061
121420ksoftirqd/1121650irq/29-eth0_g0_22:28:501
286922410sleep1121650irq/29-eth0_g0_21:15:581
121750410irq/30-eth0_g0_1219-21kworker/1:200:32:221
121750410irq/30-eth0_g0_121ksoftirqd/121:35:541
121650410irq/29-eth0_g0_9090-21seq00:20:520
121650410irq/29-eth0_g0_8321-21find22:05:510
121650410irq/29-eth0_g0_28909-21/usr/sbin/munin23:30:460
121650410irq/29-eth0_g0_25396-21diskmemload23:23:370
121650410irq/29-eth0_g0_25396-21diskmemload23:23:370
121650410irq/29-eth0_g0_1964-21runrttasks19:04:380
121410ksoftirqd/1121750irq/30-eth0_g0_22:43:361
121410ksoftirqd/1121650irq/29-eth0_g0_23:43:271
314002400chrt121650irq/29-eth0_g0_21:28:570
2846799401cyclictest21303-21sed23:00:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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