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2025-08-21 - 21:31

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 Aug 21, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121560ksoftirqd/12288650irq/29-eth0_g0_12:16:251
121500ksoftirqd/12288650irq/29-eth0_g0_11:36:401
2288650480irq/29-eth0_g0_20769-21unixbench_multi10:06:281
2288650480irq/29-eth0_g0_0-21swapper/112:11:051
2288650480irq/29-eth0_g0_0-21swapper/112:11:051
121480ksoftirqd/12335599cyclictest12:12:541
2288650440irq/29-eth0_g0_470-21kworker/1:111:48:491
121440ksoftirqd/12288650irq/29-eth0_g0_10:31:271
121440ksoftirqd/12288650irq/29-eth0_g0_10:16:251
121440ksoftirqd/12288650irq/29-eth0_g0_10:16:251
121440ksoftirqd/12288650irq/29-eth0_g0_08:41:221
2288750430irq/30-eth0_g0_15648-21/usr/sbin/munin09:36:210
121430ksoftirqd/12288750irq/30-eth0_g0_11:39:030
121430ksoftirqd/12288750irq/30-eth0_g0_11:20:061
2288750410irq/30-eth0_g0_31ksoftirqd/010:16:300
2288750410irq/30-eth0_g0_31ksoftirqd/010:16:300
2288750410irq/30-eth0_g0_22885-21kworker/0:211:24:070
2288750410irq/30-eth0_g0_22885-21kworker/0:209:49:580
2288650410irq/29-eth0_g0_121ksoftirqd/111:51:251
2288650410irq/29-eth0_g0_121ksoftirqd/110:01:000
121410ksoftirqd/12288750irq/30-eth0_g0_10:02:000
2288750400irq/30-eth0_g0_22885-21kworker/0:212:17:070
2288750400irq/30-eth0_g0_22885-21kworker/0:212:11:440
2288750400irq/30-eth0_g0_22885-21kworker/0:210:41:200
2288650400irq/29-eth0_g0_0-21swapper/111:03:511
121400ksoftirqd/12288650irq/29-eth0_g0_08:41:071
2288750390irq/30-eth0_g0_30906-21cat11:11:210
2288750390irq/30-eth0_g0_31ksoftirqd/011:50:020
2288750390irq/30-eth0_g0_31ksoftirqd/009:24:190
2288750390irq/30-eth0_g0_22885-21kworker/0:212:07:440
2288750390irq/30-eth0_g0_22885-21kworker/0:212:07:440
2288750390irq/30-eth0_g0_22885-21kworker/0:212:01:160
2288750390irq/30-eth0_g0_22885-21kworker/0:211:52:530
2288750390irq/30-eth0_g0_22885-21kworker/0:211:02:360
2288750390irq/30-eth0_g0_22885-21kworker/0:210:58:470
2288750390irq/30-eth0_g0_22885-21kworker/0:210:46:450
2288750390irq/30-eth0_g0_22885-21kworker/0:210:31:090
2288750390irq/30-eth0_g0_22885-21kworker/0:210:26:500
2288750390irq/30-eth0_g0_22885-21kworker/0:209:51:170
2288750390irq/30-eth0_g0_121ksoftirqd/109:09:320
2288650390irq/29-eth0_g0_470-21kworker/1:112:34:541
2288650390irq/29-eth0_g0_121ksoftirqd/111:57:251
2288650390irq/29-eth0_g0_121ksoftirqd/111:10:321
121390ksoftirqd/12288750irq/30-eth0_g0_10:14:200
121390ksoftirqd/12288650irq/29-eth0_g0_09:51:261
2288750380irq/30-eth0_g0_31ksoftirqd/011:45:240
2288750380irq/30-eth0_g0_31ksoftirqd/010:55:570
2288750380irq/30-eth0_g0_22885-21kworker/0:212:22:260
2288750380irq/30-eth0_g0_22885-21kworker/0:211:16:330
2288750380irq/30-eth0_g0_22885-21kworker/0:210:37:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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