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2026-06-23 - 10:57

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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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Tue Jun 23, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2988221070sleep0121650irq/29-eth0_g0_21:28:420
1211000ksoftirqd/1121750irq/30-eth0_g0_22:44:211
121980ksoftirqd/1121750irq/30-eth0_g0_23:04:401
121740ksoftirqd/1121750irq/30-eth0_g0_21:04:100
305402700sleep1121750irq/30-eth0_g0_19:18:481
26312680chrt121750irq/30-eth0_g0_21:49:001
121660ksoftirqd/12805999cyclictest22:40:181
317352580sleep1121750irq/30-eth0_g0_23:48:471
121520ksoftirqd/1121750irq/30-eth0_g0_00:14:331
92072510sleep1121650irq/29-eth0_g0_00:28:561
121490ksoftirqd/1121650irq/29-eth0_g0_22:05:491
310132480sleep0121650irq/29-eth0_g0_21:32:410
121650470irq/29-eth0_g0_26986-21df_abs19:03:590
121650470irq/29-eth0_g0_121ksoftirqd/121:09:550
121650460irq/29-eth0_g0_31ksoftirqd/020:14:060
121460ksoftirqd/1121750irq/30-eth0_g0_23:40:391
121460ksoftirqd/1121750irq/30-eth0_g0_23:16:141
121460ksoftirqd/1121650irq/29-eth0_g0_23:20:261
121460ksoftirqd/1121650irq/29-eth0_g0_19:22:061
121750450irq/30-eth0_g0_121ksoftirqd/121:57:201
121450ksoftirqd/1121750irq/30-eth0_g0_22:49:111
121450ksoftirqd/1121750irq/30-eth0_g0_22:26:210
121450ksoftirqd/1121650irq/29-eth0_g0_22:38:211
121450ksoftirqd/1121650irq/29-eth0_g0_21:38:041
121750440irq/30-eth0_g0_1219-21kworker/1:221:20:501
121440ksoftirqd/1121750irq/30-eth0_g0_00:27:241
121440ksoftirqd/1121750irq/30-eth0_g0_00:04:200
121440ksoftirqd/1121650irq/29-eth0_g0_20:49:021
121440ksoftirqd/1121650irq/29-eth0_g0_20:21:441
121750430irq/30-eth0_g0_1219-21kworker/1:223:29:351
121750430irq/30-eth0_g0_1219-21kworker/1:223:09:301
121750430irq/30-eth0_g0_1219-21kworker/1:221:11:051
121750430irq/30-eth0_g0_1219-21kworker/1:200:08:521
121430ksoftirqd/1121750irq/30-eth0_g0_19:33:481
121430ksoftirqd/1121650irq/29-eth0_g0_23:59:430
121430ksoftirqd/1121650irq/29-eth0_g0_22:13:471
2805999421cyclictest0-21swapper/121:04:051
121750420irq/30-eth0_g0_31ksoftirqd/022:06:030
121650420irq/29-eth0_g0_9898-21unixbench_singl00:29:090
121650420irq/29-eth0_g0_23505-21/usr/sbin/munin23:14:020
121650420irq/29-eth0_g0_121ksoftirqd/123:47:310
121420ksoftirqd/1121750irq/30-eth0_g0_22:54:071
121420ksoftirqd/1121750irq/30-eth0_g0_21:15:441
121650410irq/29-eth0_g0_13-21kworker/0:123:25:380
121650410irq/29-eth0_g0_13-21kworker/0:122:20:560
121650410irq/29-eth0_g0_13-21kworker/0:121:50:460
121650410irq/29-eth0_g0_13-21kworker/0:100:38:400
121650410irq/29-eth0_g0_13-21kworker/0:100:19:020
121410ksoftirqd/1121750irq/30-eth0_g0_21:45:270
121410ksoftirqd/1121650irq/29-eth0_g0_23:34:501
2805999401cyclictest29425-21taskset21:24:081
121650400irq/29-eth0_g0_9816-21unixbench_multi20:04:090
121650400irq/29-eth0_g0_8092-21/usr/sbin/munin22:09:110
121650400irq/29-eth0_g0_30145-21runrttasks23:39:290
121650400irq/29-eth0_g0_13-21kworker/0:123:20:190
121650400irq/29-eth0_g0_13-21kworker/0:122:00:400
121650400irq/29-eth0_g0_13-21kworker/0:119:14:070
121650400irq/29-eth0_g0_121ksoftirqd/123:11:100
121400ksoftirqd/1121750irq/30-eth0_g0_23:51:210
121400ksoftirqd/1121750irq/30-eth0_g0_00:27:560
121400ksoftirqd/1121650irq/29-eth0_g0_19:53:191
2805999391cyclictest5429-21processes21:59:061
121750390irq/30-eth0_g0_19657-21taskset22:58:591
121650390irq/29-eth0_g0_27439-21munin-run21:18:470
121390ksoftirqd/1121750irq/30-eth0_g0_23:04:210
121390ksoftirqd/1121750irq/30-eth0_g0_22:55:260
121390ksoftirqd/1121750irq/30-eth0_g0_22:38:470
121390ksoftirqd/1121750irq/30-eth0_g0_21:35:560
121390ksoftirqd/1121750irq/30-eth0_g0_21:20:040
121390ksoftirqd/1121750irq/30-eth0_g0_20:44:420
121390ksoftirqd/1121750irq/30-eth0_g0_19:42:230
121390ksoftirqd/1121750irq/30-eth0_g0_00:18:220
121390ksoftirqd/1121650irq/29-eth0_g0_22:18:451
121750380irq/30-eth0_g0_1219-21kworker/1:222:20:081
121750380irq/30-eth0_g0_1219-21kworker/1:221:30:241
121650380irq/29-eth0_g0_31ksoftirqd/021:53:560
121650380irq/29-eth0_g0_2805899cyclictest22:29:090
121650380irq/29-eth0_g0_2805899cyclictest19:37:100
121650380irq/29-eth0_g0_1964-21runrttasks20:34:590
121650380irq/29-eth0_g0_13-21kworker/0:123:29:040
121650380irq/29-eth0_g0_13-21kworker/0:123:03:190
121650380irq/29-eth0_g0_13-21kworker/0:122:44:460
121650380irq/29-eth0_g0_13-21kworker/0:122:17:470
121650380irq/29-eth0_g0_13-21kworker/0:100:09:360
121650380irq/29-eth0_g0_121ksoftirqd/122:26:131
117450380irq/72-mmc0121ksoftirqd/120:37:361
2805999372cyclictest9556-21ntpdc20:04:041
2805999371cyclictest3724-21unixbench_multi00:04:081
2805999371cyclictest24981-21diskmemload23:54:001
2805999371cyclictest24981-21diskmemload23:54:001
2805999371cyclictest2036-21ethtool19:34:011
121750370irq/30-eth0_g0_27617-21unixbench_singl19:04:081
121750370irq/30-eth0_g0_1219-21kworker/1:222:29:141
121750370irq/30-eth0_g0_1219-21kworker/1:200:35:561
121750370irq/30-eth0_g0_121ksoftirqd/121:42:501
121650370irq/29-eth0_g0_6692-21cat19:53:480
121650370irq/29-eth0_g0_13375-21find20:19:080
121650370irq/29-eth0_g0_13-21kworker/0:123:55:370
121650370irq/29-eth0_g0_13-21kworker/0:123:55:370
121650370irq/29-eth0_g0_13-21kworker/0:123:37:290
121650370irq/29-eth0_g0_1188-21wc19:29:080
121370ksoftirqd/1121650irq/29-eth0_g0_23:53:471
121370ksoftirqd/1121650irq/29-eth0_g0_22:42:350
121370ksoftirqd/1121650irq/29-eth0_g0_21:43:330
2805999362cyclictest23004-21awk20:59:031
2805999362cyclictest21985-21sort20:54:081
2805999361cyclictest3302-21sort19:39:011
2805999361cyclictest26273-21awk23:24:071
2805999361cyclictest1844-21cpu23:58:571
2805999361cyclictest0-21swapper/120:14:061
121750360irq/30-eth0_g0_1964-21runrttasks20:53:050
121650360irq/29-eth0_g0_28840-21grep19:09:090
121650360irq/29-eth0_g0_1964-21runrttasks22:49:520
121650360irq/29-eth0_g0_1964-21runrttasks20:54:110
121650360irq/29-eth0_g0_1964-21runrttasks19:28:390
121650360irq/29-eth0_g0_121ksoftirqd/121:46:451
121360ksoftirqd/1121750irq/30-eth0_g0_00:22:011
121360ksoftirqd/1121650irq/29-eth0_g0_20:09:101
2805999351cyclictest14217-21chrt20:24:001
2805999351cyclictest0-21swapper/119:09:251
121650350irq/29-eth0_g0_5379-21runrttasks19:48:241
121650350irq/29-eth0_g0_1964-21runrttasks20:28:480
121650350irq/29-eth0_g0_15226-21cat20:28:470
121350ksoftirqd/18412-21grep19:59:061
121650340irq/29-eth0_g0_8456-21chrt19:59:060
121650340irq/29-eth0_g0_23000-21awk20:59:030
121650340irq/29-eth0_g0_10798-21chrt20:09:060
2805999331cyclictest7867-21wc19:58:471
2805999331cyclictest158092sleep120:29:071
2805999331cyclictest0-21swapper/119:27:131
121750330irq/30-eth0_g0_0-21swapper/120:44:011
121650330irq/29-eth0_g0_6857-21df_abs19:53:590
121650330irq/29-eth0_g0_4302-21cpu19:43:580
121650330irq/29-eth0_g0_31053-21proc_pri19:19:050
121650330irq/29-eth0_g0_1964-21runrttasks20:39:170
121650320irq/29-eth0_g0_18191-21proc_pri20:39:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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