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2026-06-29 - 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 Mon Jun 29, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
764621240sleep1121650irq/29-eth0_g0_21:20:031
151132930sleep0121750irq/30-eth0_g0_21:51:330
121930ksoftirqd/1121750irq/30-eth0_g0_19:12:391
121730ksoftirqd/1121750irq/30-eth0_g0_20:27:451
121710ksoftirqd/1121750irq/30-eth0_g0_00:32:531
102652680sleep1121750irq/30-eth0_g0_19:18:491
121600ksoftirqd/1258992sleep020:23:440
121580ksoftirqd/1121750irq/30-eth0_g0_23:22:420
115392580sleep0121650irq/29-eth0_g0_21:37:380
73432570sleep0121750irq/30-eth0_g0_23:33:190
121540ksoftirqd/1121750irq/30-eth0_g0_23:43:341
121520ksoftirqd/1121750irq/30-eth0_g0_23:13:540
121490ksoftirqd/1121750irq/30-eth0_g0_19:43:171
121750470irq/30-eth0_g0_12792-21proc_pri19:28:511
121470ksoftirqd/1121750irq/30-eth0_g0_23:03:281
121750460irq/30-eth0_g0_121ksoftirqd/122:08:511
121750460irq/30-eth0_g0_121ksoftirqd/122:08:511
121460ksoftirqd/1121750irq/30-eth0_g0_22:01:041
121460ksoftirqd/1121750irq/30-eth0_g0_21:15:051
121460ksoftirqd/1121750irq/30-eth0_g0_19:43:480
121460ksoftirqd/1121750irq/30-eth0_g0_00:36:321
121460ksoftirqd/1121650irq/29-eth0_g0_22:22:340
121450ksoftirqd/1121750irq/30-eth0_g0_23:19:341
121750440irq/30-eth0_g0_1219-21kworker/1:223:26:551
121750440irq/30-eth0_g0_1219-21kworker/1:223:26:551
121750440irq/30-eth0_g0_121ksoftirqd/122:39:591
121650440irq/29-eth0_g0_13-21kworker/0:122:01:030
121440ksoftirqd/1121750irq/30-eth0_g0_21:41:351
121440ksoftirqd/1121750irq/30-eth0_g0_21:23:461
121440ksoftirqd/1121750irq/30-eth0_g0_21:23:461
141002430sleep0121650irq/29-eth0_g0_21:48:330
121750430irq/30-eth0_g0_1219-21kworker/1:223:28:541
121650430irq/29-eth0_g0_31ksoftirqd/020:28:480
121650430irq/29-eth0_g0_19008-21sendmail_mailqu00:18:510
121750420irq/30-eth0_g0_121ksoftirqd/100:03:501
121650420irq/29-eth0_g0_6656-21grep19:03:510
121650420irq/29-eth0_g0_31ksoftirqd/023:24:150
121650420irq/29-eth0_g0_31ksoftirqd/023:24:150
121420ksoftirqd/1121650irq/29-eth0_g0_23:04:391
23102410sleep0121650irq/29-eth0_g0_23:11:500
121750410irq/30-eth0_g0_121ksoftirqd/121:10:231
121650410irq/29-eth0_g0_13-21kworker/0:123:58:460
121650410irq/29-eth0_g0_13-21kworker/0:122:24:470
121650410irq/29-eth0_g0_121ksoftirqd/122:53:130
121650410irq/29-eth0_g0_121ksoftirqd/119:43:491
121410ksoftirqd/1121650irq/29-eth0_g0_23:17:491
734199406cyclictest1305-21unixbench_multi20:53:541
121650400irq/29-eth0_g0_31ksoftirqd/020:13:460
121650400irq/29-eth0_g0_31ksoftirqd/000:38:020
121650400irq/29-eth0_g0_20734-21sshd20:02:580
121650400irq/29-eth0_g0_13-21kworker/0:122:08:490
121650400irq/29-eth0_g0_13-21kworker/0:122:08:490
121650400irq/29-eth0_g0_13-21kworker/0:100:23:500
121650400irq/29-eth0_g0_0-21swapper/022:38:430
121650400irq/29-eth0_g0_0-21swapper/022:13:540
121400ksoftirqd/1121750irq/30-eth0_g0_23:07:570
121400ksoftirqd/1121750irq/30-eth0_g0_21:38:440
121400ksoftirqd/1121750irq/30-eth0_g0_21:18:380
734199391cyclictest7756-21cat23:33:491
734199391cyclictest15902-21zcat21:53:521
121750390irq/30-eth0_g0_1219-21kworker/1:223:38:471
121750390irq/30-eth0_g0_121ksoftirqd/122:52:041
121750390irq/30-eth0_g0_121ksoftirqd/122:36:291
121650390irq/29-eth0_g0_313752sleep020:43:540
121650390irq/29-eth0_g0_313752sleep020:43:540
121650390irq/29-eth0_g0_13-21kworker/0:122:59:050
121650390irq/29-eth0_g0_121ksoftirqd/122:36:180
121390ksoftirqd/1121750irq/30-eth0_g0_23:34:410
121390ksoftirqd/1121750irq/30-eth0_g0_22:55:530
121390ksoftirqd/1121750irq/30-eth0_g0_00:30:200
121390ksoftirqd/1121650irq/29-eth0_g0_20:13:491
121750380irq/30-eth0_g0_1219-21kworker/1:222:23:371
121750380irq/30-eth0_g0_1219-21kworker/1:222:20:551
121750380irq/30-eth0_g0_1219-21kworker/1:221:53:191
121750380irq/30-eth0_g0_1219-21kworker/1:200:26:491
121750380irq/30-eth0_g0_1219-21kworker/1:200:17:551
121750380irq/30-eth0_g0_1219-21kworker/1:200:12:581
121750380irq/30-eth0_g0_121ksoftirqd/100:00:131
121650380irq/29-eth0_g0_1964-21runrttasks21:03:590
121650380irq/29-eth0_g0_16299-21sort00:08:490
121650380irq/29-eth0_g0_13-21kworker/0:123:45:020
121650380irq/29-eth0_g0_13-21kworker/0:122:05:260
121650380irq/29-eth0_g0_13-21kworker/0:121:55:090
121650380irq/29-eth0_g0_121ksoftirqd/121:38:021
121380ksoftirqd/1121750irq/30-eth0_g0_00:16:480
121380ksoftirqd/1121650irq/29-eth0_g0_21:44:431
734199372cyclictest27826-21chrt20:29:581
734199371cyclictest17482-21wc19:48:471
734199371cyclictest11564-21/usr/sbin/munin23:48:501
121750370irq/30-eth0_g0_1219-21kworker/1:222:57:221
121750370irq/30-eth0_g0_0-21swapper/100:22:061
121650370irq/29-eth0_g0_9367-21unixbench_singl19:13:530
121650370irq/29-eth0_g0_4999-21unixbench_multi21:08:540
121650370irq/29-eth0_g0_1964-21runrttasks19:56:570
121650370irq/29-eth0_g0_1964-21runrttasks19:05:411
121650370irq/29-eth0_g0_13-21kworker/0:123:51:390
121650370irq/29-eth0_g0_13-21kworker/0:122:44:470
121650370irq/29-eth0_g0_13-21kworker/0:122:30:280
121650370irq/29-eth0_g0_13-21kworker/0:121:27:170
121650370irq/29-eth0_g0_13-21kworker/0:121:27:170
121650370irq/29-eth0_g0_13-21kworker/0:100:05:580
121650370irq/29-eth0_g0_121ksoftirqd/122:44:151
121650370irq/29-eth0_g0_11799-21unixbench_singl19:23:540
121650370irq/29-eth0_g0_0-21swapper/019:08:470
100232370sleep0121650irq/29-eth0_g0_21:29:120
734199362cyclictest29351-21munin-run20:38:321
734199361cyclictest98042sleep119:18:321
734199361cyclictest22804-21sed20:08:551
734199361cyclictest18582-21df_abs19:53:441
734199361cyclictest0-21swapper/119:33:481
734199361cyclictest0-21swapper/119:24:551
121750360irq/30-eth0_g0_1219-21kworker/1:223:08:401
121750360irq/30-eth0_g0_1219-21kworker/1:222:13:591
121750360irq/30-eth0_g0_1219-21kworker/1:221:30:161
121750360irq/30-eth0_g0_121ksoftirqd/122:03:431
121650360irq/29-eth0_g0_9388-21unixbench_singl23:38:540
121650360irq/29-eth0_g0_25710-21latency_hist20:23:320
121650360irq/29-eth0_g0_2543-21unixbench_multi20:58:530
121650360irq/29-eth0_g0_1964-21runrttasks20:53:410
121650360irq/29-eth0_g0_1964-21runrttasks20:42:420
121650360irq/29-eth0_g0_1964-21runrttasks19:31:380
121650360irq/29-eth0_g0_1964-21runrttasks19:20:540
121650360irq/29-eth0_g0_13-21kworker/0:123:54:580
121650360irq/29-eth0_g0_13-21kworker/0:123:54:580
121650360irq/29-eth0_g0_0-21swapper/019:33:440
121360ksoftirqd/1121650irq/29-eth0_g0_20:21:071
734199351cyclictest29530-21df_abs20:38:431
734199351cyclictest2541-21unixbench_multi20:58:531
121750350irq/30-eth0_g0_12496-21df_abs23:53:441
121750350irq/30-eth0_g0_12496-21df_abs23:53:441
121750350irq/30-eth0_g0_1219-21kworker/1:222:29:451
121750350irq/30-eth0_g0_0-21swapper/121:03:431
121650350irq/29-eth0_g0_4269-21diskmemload21:13:460
121650350irq/29-eth0_g0_22646-21sendmail_mailtr20:08:530
121650350irq/29-eth0_g0_1964-21runrttasks20:38:070
121650350irq/29-eth0_g0_1964-21runrttasks20:06:090
121650350irq/29-eth0_g0_17594-21ntp_kernel_pll_19:48:490
121650350irq/29-eth0_g0_0-21swapper/020:48:430
121650350irq/29-eth0_g0_0-21swapper/020:48:430
734199341cyclictest32121-21chrt20:48:471
734199341cyclictest32121-21chrt20:48:471
734199341cyclictest20291-21unixbench_multi19:58:541
734199321cyclictest21176-21cat20:03:471
121750320irq/30-eth0_g0_0-21swapper/120:43:431
121750320irq/30-eth0_g0_0-21swapper/120:43:431
121650320irq/29-eth0_g0_15441-21sed19:38:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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