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2026-08-26 - 23:37

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 highest latencies:
System rack3slot5s.osadl.org (updated Wed Aug 26, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2142021160sleep0121650irq/29-eth0_g0_11:29:440
121880ksoftirqd/1121750irq/30-eth0_g0_10:16:340
121720ksoftirqd/1121750irq/30-eth0_g0_08:56:261
121680ksoftirqd/1121750irq/30-eth0_g0_09:23:460
121530ksoftirqd/1121750irq/30-eth0_g0_10:10:361
121510ksoftirqd/1244662chrt07:16:300
121510ksoftirqd/1121750irq/30-eth0_g0_10:53:561
121490ksoftirqd/1121750irq/30-eth0_g0_09:24:371
121480ksoftirqd/1121750irq/30-eth0_g0_10:35:441
265462460sleep1121750irq/30-eth0_g0_11:51:211
121460ksoftirqd/1121750irq/30-eth0_g0_11:22:321
121460ksoftirqd/1121750irq/30-eth0_g0_08:52:591
121750450irq/30-eth0_g0_1657-21if_eth012:21:241
121750450irq/30-eth0_g0_1219-21kworker/1:209:35:181
121650450irq/29-eth0_g0_19260-21sed11:21:220
121450ksoftirqd/1121750irq/30-eth0_g0_09:49:471
121750440irq/30-eth0_g0_1219-21kworker/1:209:28:041
121650440irq/29-eth0_g0_13-21kworker/0:109:27:550
121650440irq/29-eth0_g0_13-21kworker/0:109:11:330
121750430irq/30-eth0_g0_1219-21kworker/1:210:24:321
121650430irq/29-eth0_g0_4242sleep010:02:580
121650430irq/29-eth0_g0_31ksoftirqd/010:33:080
121650430irq/29-eth0_g0_121ksoftirqd/110:26:490
121430ksoftirqd/1121750irq/30-eth0_g0_10:19:371
121750420irq/30-eth0_g0_13653-21cat10:56:341
121750420irq/30-eth0_g0_1219-21kworker/1:212:05:231
121750420irq/30-eth0_g0_1219-21kworker/1:209:36:151
121750420irq/30-eth0_g0_121ksoftirqd/111:16:131
121650420irq/29-eth0_g0_1964-21runrttasks07:02:530
121420ksoftirqd/1121750irq/30-eth0_g0_12:14:361
121420ksoftirqd/1121650irq/29-eth0_g0_09:33:110
121650410irq/29-eth0_g0_31ksoftirqd/010:11:240
121650410irq/29-eth0_g0_2853-21taskset08:01:250
121650410irq/29-eth0_g0_24486-21ntp_offset11:41:290
121650410irq/29-eth0_g0_13-21kworker/0:112:33:590
121650410irq/29-eth0_g0_13-21kworker/0:112:33:590
121650410irq/29-eth0_g0_13-21kworker/0:112:03:060
121650410irq/29-eth0_g0_13-21kworker/0:111:46:320
121650410irq/29-eth0_g0_13-21kworker/0:111:46:320
121650410irq/29-eth0_g0_121ksoftirqd/108:36:121
121410ksoftirqd/1121650irq/29-eth0_g0_10:27:591
121750400irq/30-eth0_g0_22864-21seq11:36:181
121750400irq/30-eth0_g0_121ksoftirqd/111:41:221
121650400irq/29-eth0_g0_31ksoftirqd/012:16:310
121650400irq/29-eth0_g0_1964-21runrttasks09:18:140
121650400irq/29-eth0_g0_13-21kworker/0:112:08:380
121650400irq/29-eth0_g0_13-21kworker/0:111:36:480
121400ksoftirqd/1121650irq/29-eth0_g0_10:06:121
2149599391cyclictest1628-21chrt07:56:251
121750390irq/30-eth0_g0_14534-21irqstats11:01:261
121750390irq/30-eth0_g0_121ksoftirqd/110:41:371
121750390irq/30-eth0_g0_0-21swapper/011:11:340
121750390irq/30-eth0_g0_0-21swapper/011:11:340
121650390irq/29-eth0_g0_29534-21timerandwakeup07:36:340
121650390irq/29-eth0_g0_286272sleep009:46:260
121650390irq/29-eth0_g0_2149499cyclictest10:42:070
121650390irq/29-eth0_g0_13-21kworker/0:111:31:220
121650390irq/29-eth0_g0_13-21kworker/0:110:49:570
121650390irq/29-eth0_g0_13-21kworker/0:109:59:480
121650390irq/29-eth0_g0_13-21kworker/0:109:41:080
121650390irq/29-eth0_g0_13-21kworker/0:109:08:390
121650390irq/29-eth0_g0_121ksoftirqd/111:10:351
121390ksoftirqd/1121750irq/30-eth0_g0_11:56:170
121390ksoftirqd/1121650irq/29-eth0_g0_11:18:000
121390ksoftirqd/1121650irq/29-eth0_g0_08:41:241
41350380irq/23-fsldma-c31ksoftirqd/007:46:300
2149599381cyclictest5713-21grep08:11:331
2149599381cyclictest17200-21proc_pri11:11:301
2149599381cyclictest17200-21proc_pri11:11:301
121750380irq/30-eth0_g0_30539-21awk07:41:281
121750380irq/30-eth0_g0_2295-21iostat10:11:241
121750380irq/30-eth0_g0_21977-21ntp_offset07:06:291
121750380irq/30-eth0_g0_1219-21kworker/1:211:58:471
121750380irq/30-eth0_g0_1219-21kworker/1:209:51:551
121750380irq/30-eth0_g0_121ksoftirqd/112:07:421
121650380irq/29-eth0_g0_31ksoftirqd/009:42:580
121650380irq/29-eth0_g0_1964-21runrttasks07:13:370
121650380irq/29-eth0_g0_13-21kworker/0:111:52:250
121650380irq/29-eth0_g0_13-21kworker/0:110:56:180
121650380irq/29-eth0_g0_13-21kworker/0:110:21:520
121380ksoftirqd/1121650irq/29-eth0_g0_09:06:491
2149599371cyclictest31929-21seq07:46:331
2149599371cyclictest25791-21ps11:46:321
2149599371cyclictest25791-21ps11:46:321
2149599371cyclictest18471-21diskmemload12:31:241
2149599371cyclictest18471-21diskmemload12:31:241
121750370irq/30-eth0_g0_2812-21df_abs12:26:221
121750370irq/30-eth0_g0_26392-21chrt07:26:121
121750370irq/30-eth0_g0_1219-21kworker/1:211:35:041
121750370irq/30-eth0_g0_1219-21kworker/1:210:48:371
121750370irq/30-eth0_g0_1219-21kworker/1:209:19:071
121750370irq/30-eth0_g0_0-21swapper/109:59:281
121650370irq/29-eth0_g0_3664-21taskset12:29:230
121650370irq/29-eth0_g0_30313-21/usr/sbin/munin09:51:350
121650370irq/29-eth0_g0_13-21kworker/0:112:12:000
121650370irq/29-eth0_g0_13-21kworker/0:111:08:490
121650370irq/29-eth0_g0_13-21kworker/0:111:04:500
2149599362cyclictest9314-21munin-run10:41:121
2149599362cyclictest2796-21df_inode08:01:241
2149599361cyclictest17968-21sed09:01:331
2149599361cyclictest1324-21chrt07:56:121
2149599361cyclictest11910-21grep08:36:331
2149599361cyclictest0-21swapper/107:31:231
138302360sleep10-21swapper/108:46:251
121750360irq/30-eth0_g0_1219-21kworker/1:212:21:071
121750360irq/30-eth0_g0_1219-21kworker/1:209:43:391
121750360irq/30-eth0_g0_1219-21kworker/1:209:12:271
121750360irq/30-eth0_g0_121ksoftirqd/108:21:021
121650360irq/29-eth0_g0_31ksoftirqd/010:36:370
121650360irq/29-eth0_g0_28342-21unixbench_multi07:31:320
121650360irq/29-eth0_g0_2149499cyclictest12:26:120
121650360irq/29-eth0_g0_1964-21runrttasks07:55:410
121650360irq/29-eth0_g0_1964-21runrttasks07:30:170
121650360irq/29-eth0_g0_1964-21runrttasks07:24:180
121650360irq/29-eth0_g0_1795-21ntp_states07:56:280
121650360irq/29-eth0_g0_13-21kworker/0:110:54:090
121650360irq/29-eth0_g0_13-21kworker/0:110:08:370
121360ksoftirqd/120809-21proc_pri07:01:311
2149599351cyclictest24467-21/usr/sbin/munin07:16:301
2149599351cyclictest0-21swapper/108:22:451
121750350irq/30-eth0_g0_9539-21seq08:27:061
121650350irq/29-eth0_g0_8190-21unixbench_multi08:21:320
121650350irq/29-eth0_g0_5548-21proc_pri08:11:300
121650350irq/29-eth0_g0_3935-21df_abs08:06:240
121650350irq/29-eth0_g0_1964-21runrttasks08:57:350
121650350irq/29-eth0_g0_1964-21runrttasks08:51:130
121650350irq/29-eth0_g0_1964-21runrttasks08:28:150
121650350irq/29-eth0_g0_11893-21grep08:36:320
121650350irq/29-eth0_g0_10381-21grep08:31:300
2149599341cyclictest4436-21chrt08:06:331
121750340irq/30-eth0_g0_23487-21grep07:11:341
121750340irq/30-eth0_g0_0-21swapper/111:29:301
121650340irq/29-eth0_g0_30683-21zcat07:41:310
121650340irq/29-eth0_g0_22051-21proc_pri07:06:310
121650340irq/29-eth0_g0_1964-21runrttasks08:43:150
121650340irq/29-eth0_g0_13922-21cat08:46:270
2149599332cyclictest268832sleep107:26:291
121650330irq/29-eth0_g0_6605-21memory08:16:270
121650320irq/29-eth0_g0_2149599cyclictest07:36:321
121650320irq/29-eth0_g0_1964-21runrttasks09:01:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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