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2026-07-30 - 20:39

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 Thu Jul 30, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
819021580sleep1121750irq/30-eth0_g0_09:50:461
1211160ksoftirqd/1121750irq/30-eth0_g0_11:32:341
1211100ksoftirqd/1121750irq/30-eth0_g0_11:07:321
2529621070sleep1121650irq/29-eth0_g0_11:00:241
121990ksoftirqd/1121750irq/30-eth0_g0_09:14:160
121760ksoftirqd/1121750irq/30-eth0_g0_08:12:311
45642600sleep0121650irq/29-eth0_g0_11:47:350
92232570sleep1121750irq/30-eth0_g0_09:53:311
121520ksoftirqd/1121750irq/30-eth0_g0_10:32:441
228302500sleep0121750irq/30-eth0_g0_10:50:110
121500ksoftirqd/1121750irq/30-eth0_g0_11:44:201
121480ksoftirqd/1121750irq/30-eth0_g0_10:27:270
121750460irq/30-eth0_g0_1219-21kworker/1:210:37:281
121460ksoftirqd/1121750irq/30-eth0_g0_09:36:551
121450ksoftirqd/1121650irq/29-eth0_g0_12:15:450
121650440irq/29-eth0_g0_12622-21sendmail_mailqu10:07:370
121650440irq/29-eth0_g0_121ksoftirqd/111:39:241
121440ksoftirqd/1121750irq/30-eth0_g0_10:51:191
121440ksoftirqd/1121750irq/30-eth0_g0_09:24:171
121750430irq/30-eth0_g0_1219-21kworker/1:211:59:061
121750430irq/30-eth0_g0_1219-21kworker/1:210:07:371
121750430irq/30-eth0_g0_121ksoftirqd/111:14:181
121430ksoftirqd/1121750irq/30-eth0_g0_12:15:471
121430ksoftirqd/1121750irq/30-eth0_g0_09:31:451
121430ksoftirqd/1121650irq/29-eth0_g0_12:07:521
121750420irq/30-eth0_g0_1219-21kworker/1:212:03:271
121750420irq/30-eth0_g0_1219-21kworker/1:211:05:201
121750420irq/30-eth0_g0_121ksoftirqd/109:12:291
121650420irq/29-eth0_g0_32299-21unixbench_singl07:02:370
121650420irq/29-eth0_g0_31ksoftirqd/010:40:250
121420ksoftirqd/1121650irq/29-eth0_g0_12:26:571
121420ksoftirqd/1121650irq/29-eth0_g0_09:18:501
121420ksoftirqd/1121650irq/29-eth0_g0_09:18:501
300352410sleep0121650irq/29-eth0_g0_09:07:320
147522410sleep0121650irq/29-eth0_g0_12:28:240
121650410irq/29-eth0_g0_31ksoftirqd/011:37:260
121650410irq/29-eth0_g0_31ksoftirqd/009:29:000
121650410irq/29-eth0_g0_13-21kworker/0:112:20:510
121650410irq/29-eth0_g0_13-21kworker/0:110:44:490
121650410irq/29-eth0_g0_1219-21kworker/1:211:27:341
3276199402cyclictest11963-21proc_pri12:17:341
147532400sleep1121650irq/29-eth0_g0_12:28:251
121750400irq/30-eth0_g0_5196-21taskset11:51:101
121750400irq/30-eth0_g0_121ksoftirqd/110:24:071
121650400irq/29-eth0_g0_13-21kworker/0:112:08:210
121650400irq/29-eth0_g0_13-21kworker/0:111:42:400
121650400irq/29-eth0_g0_13-21kworker/0:110:14:090
121650400irq/29-eth0_g0_121ksoftirqd/111:07:100
121650400irq/29-eth0_g0_121ksoftirqd/109:22:290
121650400irq/29-eth0_g0_121ksoftirqd/108:49:301
121400ksoftirqd/1121750irq/30-eth0_g0_12:33:390
121400ksoftirqd/1121650irq/29-eth0_g0_10:21:291
3276199397cyclictest8397-21grep07:37:391
121750390irq/30-eth0_g0_7522-21taskset07:35:281
121750390irq/30-eth0_g0_1219-21kworker/1:212:36:331
121750390irq/30-eth0_g0_1219-21kworker/1:209:59:291
121650390irq/29-eth0_g0_1964-21runrttasks11:08:370
121650390irq/29-eth0_g0_13-21kworker/0:111:59:590
121650390irq/29-eth0_g0_13-21kworker/0:111:25:240
121390ksoftirqd/1121750irq/30-eth0_g0_11:32:060
121390ksoftirqd/1121750irq/30-eth0_g0_09:45:510
121390ksoftirqd/1121650irq/29-eth0_g0_07:29:341
121750380irq/30-eth0_g0_9149-21vmstat09:52:390
121750380irq/30-eth0_g0_1219-21kworker/1:211:19:591
121750380irq/30-eth0_g0_1219-21kworker/1:210:03:021
121750380irq/30-eth0_g0_1219-21kworker/1:209:12:001
121750380irq/30-eth0_g0_121ksoftirqd/110:31:411
121750380irq/30-eth0_g0_0-21swapper/110:16:591
121750380irq/30-eth0_g0_0-21swapper/109:41:261
121650380irq/29-eth0_g0_9068-21df_abs07:42:280
121650380irq/29-eth0_g0_9068-21df_abs07:42:280
121650380irq/29-eth0_g0_6010-21grep11:52:380
121650380irq/29-eth0_g0_31ksoftirqd/012:03:400
121650380irq/29-eth0_g0_31ksoftirqd/010:57:510
121650380irq/29-eth0_g0_2795-21latency_hist07:17:170
121650380irq/29-eth0_g0_1964-21runrttasks11:36:400
121650380irq/29-eth0_g0_1964-21runrttasks08:53:330
121650380irq/29-eth0_g0_1964-21runrttasks07:03:451
121650380irq/29-eth0_g0_13-21kworker/0:112:27:160
121650380irq/29-eth0_g0_13-21kworker/0:111:17:470
121650380irq/29-eth0_g0_13-21kworker/0:110:55:320
121650380irq/29-eth0_g0_13-21kworker/0:110:25:330
121380ksoftirqd/1121750irq/30-eth0_g0_09:32:240
121380ksoftirqd/1121650irq/29-eth0_g0_10:07:080
799370migration/010308-21unixbench_singl09:57:360
3276199372cyclictest21490-21wc08:32:311
3276199372cyclictest1964-21runrttasks07:45:171
3276199372cyclictest1964-21runrttasks07:45:171
3276199371cyclictest5916-21taskset11:52:361
3276199371cyclictest23085-21grep08:37:381
3276199371cyclictest23085-21grep08:37:381
121750370irq/30-eth0_g0_1219-21kworker/1:210:53:201
121650370irq/29-eth0_g0_77142sleep009:47:370
121650370irq/29-eth0_g0_5363-21grep09:37:380
121650370irq/29-eth0_g0_20373-21/usr/sbin/munin08:27:340
121650370irq/29-eth0_g0_1964-21runrttasks09:19:120
121650370irq/29-eth0_g0_1964-21runrttasks09:19:120
121650370irq/29-eth0_g0_1964-21runrttasks08:20:340
121650370irq/29-eth0_g0_1964-21runrttasks07:56:140
121650370irq/29-eth0_g0_16976-21unixbench_multi08:12:370
121650370irq/29-eth0_g0_13-21kworker/0:110:33:560
121650370irq/29-eth0_g0_121ksoftirqd/110:18:560
121650370irq/29-eth0_g0_1040-21unixbench_multi07:07:370
3276199362cyclictest3106-21interrupts07:17:291
3276199362cyclictest17685-21sed08:17:281
3276199361cyclictest24344-21grep08:42:401
3276199361cyclictest15739-21grep08:07:381
3276199361cyclictest1034-21grep07:07:371
121750360irq/30-eth0_g0_4562-21wc07:22:351
121750360irq/30-eth0_g0_1219-21kworker/1:210:44:441
121750360irq/30-eth0_g0_1219-21kworker/1:209:42:421
121650360irq/29-eth0_g0_4012-21seq07:22:170
121650360irq/29-eth0_g0_1964-21runrttasks08:39:420
121650360irq/29-eth0_g0_1964-21runrttasks08:39:420
121650360irq/29-eth0_g0_1964-21runrttasks07:27:080
121650360irq/29-eth0_g0_13-21kworker/0:111:13:510
3276199351cyclictest30703-21sort11:22:301
3276199351cyclictest28200-21taskset08:59:031
3276199351cyclictest263622sleep108:52:321
3276199351cyclictest14208-21cat08:02:311
3276199351cyclictest10893-21unixbench_singl07:47:371
121650350irq/29-eth0_g0_5790-21ps07:27:360
121650350irq/29-eth0_g0_29096-21rt-features09:02:350
121650350irq/29-eth0_g0_19969-21grep08:27:170
121650350irq/29-eth0_g0_1964-21runrttasks08:50:190
121650350irq/29-eth0_g0_1964-21runrttasks08:42:560
121650350irq/29-eth0_g0_1964-21runrttasks08:35:290
121650350irq/29-eth0_g0_1964-21runrttasks08:10:580
121650350irq/29-eth0_g0_1964-21runrttasks08:00:260
121650350irq/29-eth0_g0_1964-21runrttasks07:16:511
121650350irq/29-eth0_g0_10839-21unixbench_multi07:47:370
121350ksoftirqd/118907-21grep08:22:261
121350ksoftirqd/1121750irq/30-eth0_g0_09:02:160
3276199341cyclictest29196-21tail09:02:371
3276199341cyclictest202872sleep108:27:321
3276199341cyclictest11440-21/usr/sbin/munin07:52:351
121650340irq/29-eth0_g0_7929-21runrttasks07:37:280
121650340irq/29-eth0_g0_7006-21proc_pri07:32:350
121650340irq/29-eth0_g0_0-21swapper/008:06:050
121330ksoftirqd/1121750irq/30-eth0_g0_08:02:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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