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2026-08-17 - 17:09

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 Aug 17, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1572021710sleep1121650irq/29-eth0_g0_11:53:181
2140921660sleep1121650irq/29-eth0_g0_10:05:371
855721030sleep0121650irq/29-eth0_g0_11:25:230
1211020ksoftirqd/1121750irq/30-eth0_g0_11:19:241
121850ksoftirqd/1121650irq/29-eth0_g0_10:29:360
231012710sleep1121750irq/30-eth0_g0_10:11:481
139962680sleep1121650irq/29-eth0_g0_09:34:491
226952650sleep1121650irq/29-eth0_g0_10:11:221
121630ksoftirqd/1121750irq/30-eth0_g0_09:06:551
121620ksoftirqd/1121750irq/30-eth0_g0_11:44:291
263572570sleep0121650irq/29-eth0_g0_10:26:080
244392550sleep1121750irq/30-eth0_g0_12:30:041
121550ksoftirqd/1121750irq/30-eth0_g0_12:22:371
121550ksoftirqd/1121650irq/29-eth0_g0_10:10:150
121540ksoftirqd/1121750irq/30-eth0_g0_09:28:111
121530ksoftirqd/1121750irq/30-eth0_g0_11:35:131
121520ksoftirqd/1121750irq/30-eth0_g0_12:01:061
115592520sleep1121650irq/29-eth0_g0_09:24:581
121490ksoftirqd/1121750irq/30-eth0_g0_09:57:231
121480ksoftirqd/1121750irq/30-eth0_g0_10:52:221
121750460irq/30-eth0_g0_21048-21df12:16:431
121650460irq/29-eth0_g0_31136-21ntp_offset08:31:500
121460ksoftirqd/1121750irq/30-eth0_g0_12:02:121
121460ksoftirqd/1121750irq/30-eth0_g0_11:40:081
121440ksoftirqd/1121650irq/29-eth0_g0_07:15:561
241902430sleep0121750irq/30-eth0_g0_12:27:100
121750430irq/30-eth0_g0_9126-21awk07:01:500
121750430irq/30-eth0_g0_1219-21kworker/1:210:20:271
121750430irq/30-eth0_g0_121ksoftirqd/110:46:391
121650430irq/29-eth0_g0_1964-21runrttasks10:31:490
121650430irq/29-eth0_g0_11203-21unixbench_multi09:21:550
121430ksoftirqd/1121750irq/30-eth0_g0_10:46:011
121430ksoftirqd/1121650irq/29-eth0_g0_08:21:551
220662420sleep0121650irq/29-eth0_g0_12:20:560
150372420sleep0121750irq/30-eth0_g0_09:37:390
121750420irq/30-eth0_g0_1219-21kworker/1:211:06:141
121650420irq/29-eth0_g0_31ksoftirqd/011:12:190
121650420irq/29-eth0_g0_31ksoftirqd/011:12:190
121650420irq/29-eth0_g0_31ksoftirqd/010:56:520
121650420irq/29-eth0_g0_31ksoftirqd/009:51:520
121420ksoftirqd/1121750irq/30-eth0_g0_11:09:591
121420ksoftirqd/1121750irq/30-eth0_g0_08:01:561
121650410irq/29-eth0_g0_31ksoftirqd/011:08:190
121650410irq/29-eth0_g0_31ksoftirqd/008:21:330
121650410irq/29-eth0_g0_31ksoftirqd/008:21:330
121650410irq/29-eth0_g0_22518-21missed_timers07:56:490
121650410irq/29-eth0_g0_13-21kworker/0:111:58:590
121650410irq/29-eth0_g0_13-21kworker/0:111:02:110
121650410irq/29-eth0_g0_13-21kworker/0:110:01:490
121650410irq/29-eth0_g0_13-21kworker/0:109:50:510
121650410irq/29-eth0_g0_13-21kworker/0:109:50:510
121650410irq/29-eth0_g0_13-21kworker/0:109:11:440
121650410irq/29-eth0_g0_121ksoftirqd/111:01:331
121650410irq/29-eth0_g0_121ksoftirqd/110:55:570
988999401cyclictest213922sleep107:51:501
121750400irq/30-eth0_g0_1219-21kworker/1:212:10:021
121750400irq/30-eth0_g0_121ksoftirqd/112:12:111
121750400irq/30-eth0_g0_121ksoftirqd/108:15:111
121750400irq/30-eth0_g0_121ksoftirqd/108:15:111
121750400irq/30-eth0_g0_0-21swapper/112:32:291
121650400irq/29-eth0_g0_31ksoftirqd/010:15:370
121650400irq/29-eth0_g0_15406-21sendmail_mailqu07:26:520
121650400irq/29-eth0_g0_13-21kworker/0:111:40:390
121650400irq/29-eth0_g0_13-21kworker/0:111:32:020
121650400irq/29-eth0_g0_13-21kworker/0:111:26:400
121650400irq/29-eth0_g0_13-21kworker/0:110:41:450
121650400irq/29-eth0_g0_13-21kworker/0:110:17:110
121650400irq/29-eth0_g0_13-21kworker/0:109:19:370
121650400irq/29-eth0_g0_13-21kworker/0:109:08:300
121650400irq/29-eth0_g0_0-21swapper/012:06:480
121400ksoftirqd/1121750irq/30-eth0_g0_12:21:400
121400ksoftirqd/1121750irq/30-eth0_g0_11:46:060
121400ksoftirqd/1121750irq/30-eth0_g0_07:43:400
121400ksoftirqd/1121750irq/30-eth0_g0_07:36:580
121400ksoftirqd/1121650irq/29-eth0_g0_10:25:591
121400ksoftirqd/1121650irq/29-eth0_g0_09:12:311
121400ksoftirqd/1121650irq/29-eth0_g0_07:20:531
121400ksoftirqd/1121650irq/29-eth0_g0_07:20:531
988999391cyclictest28367-21unixbench_multi10:31:541
988999391cyclictest17628-21cat07:36:501
121750390irq/30-eth0_g0_1219-21kworker/1:211:26:331
121750390irq/30-eth0_g0_1219-21kworker/1:209:55:211
121750390irq/30-eth0_g0_121ksoftirqd/111:12:401
121750390irq/30-eth0_g0_121ksoftirqd/111:12:401
121750390irq/30-eth0_g0_121ksoftirqd/110:29:171
121750390irq/30-eth0_g0_121ksoftirqd/109:50:481
121750390irq/30-eth0_g0_121ksoftirqd/109:50:481
121650390irq/29-eth0_g0_31ksoftirqd/011:16:510
121650390irq/29-eth0_g0_1964-21runrttasks08:30:420
121650390irq/29-eth0_g0_19503-21awk09:56:490
121650390irq/29-eth0_g0_13-21kworker/0:112:35:280
121650390irq/29-eth0_g0_13-21kworker/0:112:01:500
121650390irq/29-eth0_g0_13-21kworker/0:111:52:380
121650390irq/29-eth0_g0_13-21kworker/0:110:37:140
121650390irq/29-eth0_g0_121ksoftirqd/109:45:260
121650390irq/29-eth0_g0_121ksoftirqd/109:37:481
121390ksoftirqd/1121750irq/30-eth0_g0_11:50:210
121390ksoftirqd/1121750irq/30-eth0_g0_09:27:070
121390ksoftirqd/1121750irq/30-eth0_g0_08:12:020
121390ksoftirqd/1121750irq/30-eth0_g0_08:12:020
121390ksoftirqd/1121750irq/30-eth0_g0_08:02:270
121390ksoftirqd/1121750irq/30-eth0_g0_07:53:270
121390ksoftirqd/1121750irq/30-eth0_g0_07:07:510
121390ksoftirqd/1121650irq/29-eth0_g0_08:50:351
121390ksoftirqd/1121650irq/29-eth0_g0_08:44:331
988999381cyclictest158492sleep109:41:491
121750380irq/30-eth0_g0_1219-21kworker/1:210:38:401
121650380irq/29-eth0_g0_31ksoftirqd/012:12:430
121650380irq/29-eth0_g0_2697-21grep08:46:540
121650380irq/29-eth0_g0_13-21kworker/0:109:35:110
121380ksoftirqd/1121750irq/30-eth0_g0_08:45:220
121380ksoftirqd/1121650irq/29-eth0_g0_11:46:581
121380ksoftirqd/1121650irq/29-eth0_g0_08:36:561
121380ksoftirqd/1121650irq/29-eth0_g0_08:00:421
988999372cyclictest3742-21rt-features08:51:521
988999372cyclictest16745-21grep07:31:541
988999371cyclictest97472sleep109:16:511
121750370irq/30-eth0_g0_9204-21proc_pri07:01:531
121750370irq/30-eth0_g0_1219-21kworker/1:211:21:331
121650370irq/29-eth0_g0_31ksoftirqd/010:46:520
121650370irq/29-eth0_g0_28631-21sort08:21:500
121650370irq/29-eth0_g0_1964-21runrttasks07:34:110
121650370irq/29-eth0_g0_1964-21runrttasks07:18:510
121650370irq/29-eth0_g0_1964-21runrttasks07:18:510
121650370irq/29-eth0_g0_1964-21runrttasks07:14:190
121650370irq/29-eth0_g0_0-21swapper/009:01:510
988999361cyclictest6124-21wc09:01:501
988999361cyclictest27451-21taskset08:16:491
988999361cyclictest27451-21taskset08:16:491
988999361cyclictest25297-21chrt08:06:541
988999361cyclictest25297-21chrt08:06:541
988999361cyclictest0-21swapper/107:26:501
988999361cyclictest0-21swapper/107:24:521
121650360irq/29-eth0_g0_20939-21cat07:51:330
121650360irq/29-eth0_g0_1964-21runrttasks08:38:320
121360ksoftirqd/1121650irq/29-eth0_g0_07:09:381
121650350irq/29-eth0_g0_3452-21irqstats08:51:460
988999341cyclictest191002sleep107:41:541
121650340irq/29-eth0_g0_4744-21missed_timers08:56:480
121650340irq/29-eth0_g0_24864-21iostat08:06:460
121650340irq/29-eth0_g0_24864-21iostat08:06:460
121340ksoftirqd/1121650irq/29-eth0_g0_07:51:331
121650330irq/29-eth0_g0_988999cyclictest08:31:481
121650330irq/29-eth0_g0_13756-21df_abs07:21:450
988999321cyclictest121750irq/30-eth0_g0_08:56:451
121650310irq/29-eth0_g0_29916-21grep08:26:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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