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2026-06-20 - 06:03

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 Jun 20, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1087321510sleep1121650irq/29-eth0_g0_23:08:521
343321480sleep1121650irq/29-eth0_g0_22:37:561
121790ksoftirqd/1121750irq/30-eth0_g0_00:25:301
198522680sleep0121650irq/29-eth0_g0_21:32:200
253532640sleep1121650irq/29-eth0_g0_00:06:081
220122620sleep1121750irq/30-eth0_g0_23:54:051
316422610sleep0121650irq/29-eth0_g0_00:32:510
129462590sleep0121650irq/29-eth0_g0_23:14:270
121540ksoftirqd/1121750irq/30-eth0_g0_21:38:011
119802530sleep0121750irq/30-eth0_g0_23:12:280
121510ksoftirqd/1121750irq/30-eth0_g0_21:53:271
121500ksoftirqd/1121750irq/30-eth0_g0_22:11:271
121500ksoftirqd/1121750irq/30-eth0_g0_22:11:271
121500ksoftirqd/1121750irq/30-eth0_g0_00:18:321
121490ksoftirqd/1121750irq/30-eth0_g0_23:30:401
121490ksoftirqd/1121750irq/30-eth0_g0_21:58:271
89042470sleep0121650irq/29-eth0_g0_22:59:110
89042470sleep0121650irq/29-eth0_g0_22:59:110
84022470sleep1121750irq/30-eth0_g0_20:44:161
252542460sleep0121650irq/29-eth0_g0_00:04:580
121650460irq/29-eth0_g0_20091-21sendmail_mailqu23:44:130
121450ksoftirqd/1121750irq/30-eth0_g0_22:27:571
121450ksoftirqd/1121650irq/29-eth0_g0_22:49:131
121650440irq/29-eth0_g0_13-21kworker/0:121:26:170
121440ksoftirqd/1121750irq/30-eth0_g0_21:14:420
121440ksoftirqd/1121650irq/29-eth0_g0_21:19:111
121440ksoftirqd/1121650irq/29-eth0_g0_21:06:391
121440ksoftirqd/1121650irq/29-eth0_g0_20:09:121
121750430irq/30-eth0_g0_121ksoftirqd/123:09:131
121650430irq/29-eth0_g0_15945-21cat19:04:080
121650430irq/29-eth0_g0_121ksoftirqd/121:24:041
121430ksoftirqd/1121650irq/29-eth0_g0_20:24:151
121430ksoftirqd/1121650irq/29-eth0_g0_20:24:151
121750420irq/30-eth0_g0_1219-21kworker/1:200:03:541
121650420irq/29-eth0_g0_13-21kworker/0:123:24:280
121420ksoftirqd/1121650irq/29-eth0_g0_21:42:381
1682699415cyclictest9025-21processes22:59:131
1682699415cyclictest9025-21processes22:59:131
121750410irq/30-eth0_g0_31ksoftirqd/021:42:210
121750410irq/30-eth0_g0_1219-21kworker/1:200:12:561
121750410irq/30-eth0_g0_121ksoftirqd/122:57:091
121750410irq/30-eth0_g0_121ksoftirqd/122:57:091
121750410irq/30-eth0_g0_121ksoftirqd/121:44:121
121650410irq/29-eth0_g0_31ksoftirqd/020:44:160
121650410irq/29-eth0_g0_13-21kworker/0:123:04:300
121650410irq/29-eth0_g0_13-21kworker/0:122:48:120
121650410irq/29-eth0_g0_13-21kworker/0:100:22:120
121650410irq/29-eth0_g0_121ksoftirqd/123:48:551
121410ksoftirqd/1121650irq/29-eth0_g0_19:34:101
121750400irq/30-eth0_g0_1219-21kworker/1:223:15:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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