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2026-06-14 - 04:57

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 Jun 14, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275621670sleep1121650irq/29-eth0_g0_23:40:501
1931121560sleep1121650irq/29-eth0_g0_22:36:331
42921150sleep1121650irq/29-eth0_g0_23:32:501
1211050ksoftirqd/1121750irq/30-eth0_g0_21:43:321
121960ksoftirqd/1121750irq/30-eth0_g0_19:09:281
49512770sleep1121750irq/30-eth0_g0_19:24:311
8712620sleep0121650irq/29-eth0_g0_21:21:030
96092560sleep1121750irq/30-eth0_g0_19:44:261
162582560chrt121750irq/30-eth0_g0_00:36:151
121550ksoftirqd/1121750irq/30-eth0_g0_21:26:260
288472510sleep1121750irq/30-eth0_g0_21:04:211
121510ksoftirqd/1121750irq/30-eth0_g0_00:00:311
216402490sleep0121650irq/29-eth0_g0_22:45:090
121480ksoftirqd/1121650irq/29-eth0_g0_23:42:350
121470ksoftirqd/1121750irq/30-eth0_g0_23:38:411
121460ksoftirqd/155699cyclictest23:03:241
121460ksoftirqd/1121650irq/29-eth0_g0_20:08:521
121450ksoftirqd/1121650irq/29-eth0_g0_22:28:551
121440ksoftirqd/1121750irq/30-eth0_g0_23:11:341
121440ksoftirqd/1121750irq/30-eth0_g0_21:59:091
121440ksoftirqd/1121750irq/30-eth0_g0_21:49:521
121440ksoftirqd/1121750irq/30-eth0_g0_21:37:541
121440ksoftirqd/1121650irq/29-eth0_g0_22:00:141
121440ksoftirqd/1121650irq/29-eth0_g0_21:10:201
320592430sleep0121750irq/30-eth0_g0_21:15:390
121750430irq/30-eth0_g0_1219-21kworker/1:223:14:411
121750430irq/30-eth0_g0_1219-21kworker/1:223:14:411
121750430irq/30-eth0_g0_1219-21kworker/1:222:45:571
121750430irq/30-eth0_g0_121ksoftirqd/122:04:211
121430ksoftirqd/1121750irq/30-eth0_g0_21:23:291
121430ksoftirqd/1121750irq/30-eth0_g0_00:18:271
121750420irq/30-eth0_g0_1219-21kworker/1:223:44:211
121750420irq/30-eth0_g0_1219-21kworker/1:222:57:211
121750420irq/30-eth0_g0_1219-21kworker/1:221:14:421
121650420irq/29-eth0_g0_31ksoftirqd/021:50:550
121650420irq/29-eth0_g0_13-21kworker/0:122:31:260
121750410irq/30-eth0_g0_1219-21kworker/1:222:20:391
121750410irq/30-eth0_g0_1219-21kworker/1:200:26:381
121650410irq/29-eth0_g0_31997-21df_abs19:04:210
121650410irq/29-eth0_g0_31ksoftirqd/023:26:310
121650410irq/29-eth0_g0_169102/usr/sbin/munin20:14:250
121650410irq/29-eth0_g0_13-21kworker/0:123:15:030
121650410irq/29-eth0_g0_13-21kworker/0:123:15:030
121650410irq/29-eth0_g0_13-21kworker/0:122:13:350
121650410irq/29-eth0_g0_13-21kworker/0:122:13:350
121410ksoftirqd/1121650irq/29-eth0_g0_22:15:031
65452400sleep0121750irq/30-eth0_g0_23:57:100
121750400irq/30-eth0_g0_31ksoftirqd/023:36:500
121750400irq/30-eth0_g0_17902-21vmstat22:29:321
121750400irq/30-eth0_g0_1219-21kworker/1:223:26:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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