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2025-11-15 - 22:12

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 Nov 15, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1308521210sleep0121450irq/29-eth0_g0_00:23:320
204521150sleep1121450irq/29-eth0_g0_23:38:371
86362880sleep1121550irq/30-eth0_g0_19:40:191
121620ksoftirqd/1121550irq/30-eth0_g0_00:35:431
80562560sleep1121550irq/30-eth0_g0_19:39:001
121510ksoftirqd/1121550irq/30-eth0_g0_20:10:211
283892500sleep1121550irq/30-eth0_g0_21:00:221
121500ksoftirqd/1121550irq/30-eth0_g0_00:30:211
121480ksoftirqd/1121450irq/29-eth0_g0_21:46:420
121470ksoftirqd/1121550irq/30-eth0_g0_23:48:381
121470ksoftirqd/1121550irq/30-eth0_g0_00:04:081
121470ksoftirqd/1121550irq/30-eth0_g0_00:04:081
121460ksoftirqd/1121550irq/30-eth0_g0_00:13:471
121460ksoftirqd/1121450irq/29-eth0_g0_23:11:161
121460ksoftirqd/1121450irq/29-eth0_g0_22:42:391
133462450sleep1121450irq/29-eth0_g0_22:10:331
121450450irq/29-eth0_g0_899watchdog/023:50:130
121450450irq/29-eth0_g0_4126-21sed23:45:230
121450ksoftirqd/1121550irq/30-eth0_g0_23:44:180
121450ksoftirqd/1121450irq/29-eth0_g0_22:19:201
121440ksoftirqd/1121550irq/30-eth0_g0_22:48:111
121440ksoftirqd/1121550irq/30-eth0_g0_22:48:111
121440ksoftirqd/1121450irq/29-eth0_g0_23:15:231
121440ksoftirqd/1121450irq/29-eth0_g0_23:00:361
121440ksoftirqd/1121450irq/29-eth0_g0_21:30:281
79862430sleep0121450irq/29-eth0_g0_00:01:210
79862430sleep0121450irq/29-eth0_g0_00:01:210
21462430sleep0121550irq/30-eth0_g0_23:39:450
143762430sleep0121450irq/29-eth0_g0_00:29:190
121550430irq/30-eth0_g0_470-21kworker/1:121:47:051
121550430irq/30-eth0_g0_470-21kworker/1:121:39:401
121450430irq/29-eth0_g0_32060-21/usr/sbin/munin19:05:230
121450430irq/29-eth0_g0_30604-21missed_timers21:10:170
121450430irq/29-eth0_g0_31ksoftirqd/023:05:080
121450430irq/29-eth0_g0_13-21kworker/0:122:03:380
61612420chrt121550irq/30-eth0_g0_21:42:321
121550420irq/30-eth0_g0_470-21kworker/1:122:56:341
121550410irq/30-eth0_g0_470-21kworker/1:121:21:231
121550410irq/30-eth0_g0_15722-21unixbench_singl22:20:211
121450410irq/29-eth0_g0_31596-21df_abs21:15:150
121450410irq/29-eth0_g0_31ksoftirqd/022:34:410
121450410irq/29-eth0_g0_1985-21runrttasks23:23:250
121450410irq/29-eth0_g0_15286-21irqstats22:20:140
121450410irq/29-eth0_g0_13-21kworker/0:122:55:010
121450410irq/29-eth0_g0_13-21kworker/0:122:12:100
121450410irq/29-eth0_g0_13-21kworker/0:121:50:230
121450410irq/29-eth0_g0_13-21kworker/0:121:44:070
121450410irq/29-eth0_g0_13-21kworker/0:100:39:370
121450410irq/29-eth0_g0_13-21kworker/0:100:12:520
121450410irq/29-eth0_g0_121ksoftirqd/122:47:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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