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2026-07-24 - 22:06

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 Fri Jul 24, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3013121260sleep1121650irq/29-eth0_g0_09:20:491
248672650sleep1121750irq/30-eth0_g0_08:57:511
130712530sleep0121650irq/29-eth0_g0_08:11:480
121520ksoftirqd/1121750irq/30-eth0_g0_09:56:561
6602490sleep1121750irq/30-eth0_g0_11:44:361
121490ksoftirqd/1121750irq/30-eth0_g0_10:41:061
121490ksoftirqd/1121750irq/30-eth0_g0_10:27:001
121490ksoftirqd/1121750irq/30-eth0_g0_09:41:011
183722470sleep1121750irq/30-eth0_g0_10:43:581
121470ksoftirqd/1121750irq/30-eth0_g0_11:21:051
121470ksoftirqd/1121650irq/29-eth0_g0_10:29:301
121470ksoftirqd/1121650irq/29-eth0_g0_09:47:141
121650460irq/29-eth0_g0_1964-21runrttasks11:44:560
121460ksoftirqd/1121750irq/30-eth0_g0_09:13:271
121460ksoftirqd/1121650irq/29-eth0_g0_10:40:290
121460ksoftirqd/1121650irq/29-eth0_g0_10:16:561
146732450sleep0121650irq/29-eth0_g0_10:28:380
121450ksoftirqd/1121750irq/30-eth0_g0_11:34:241
121450ksoftirqd/1121650irq/29-eth0_g0_11:24:501
121450ksoftirqd/1121650irq/29-eth0_g0_08:38:391
121450ksoftirqd/1121650irq/29-eth0_g0_07:10:131
121750440irq/30-eth0_g0_1219-21kworker/1:212:15:411
121440ksoftirqd/1121750irq/30-eth0_g0_11:28:091
121440ksoftirqd/1121750irq/30-eth0_g0_11:00:391
121440ksoftirqd/1121650irq/29-eth0_g0_12:29:390
121440ksoftirqd/1121650irq/29-eth0_g0_12:29:390
121650430irq/29-eth0_g0_31ksoftirqd/007:17:510
121650430irq/29-eth0_g0_13-21kworker/0:110:08:280
121650430irq/29-eth0_g0_0-21swapper/011:17:420
121430ksoftirqd/1121750irq/30-eth0_g0_11:39:471
121430ksoftirqd/1121750irq/30-eth0_g0_10:53:591
121430ksoftirqd/1121650irq/29-eth0_g0_07:02:531
121750420irq/30-eth0_g0_1219-21kworker/1:209:11:481
121750420irq/30-eth0_g0_121ksoftirqd/107:22:531
121650420irq/29-eth0_g0_31ksoftirqd/011:12:470
121650420irq/29-eth0_g0_31ksoftirqd/008:52:490
121650420irq/29-eth0_g0_13-21kworker/0:112:03:150
121650420irq/29-eth0_g0_13-21kworker/0:109:52:560
121420ksoftirqd/1121750irq/30-eth0_g0_09:47:480
121420ksoftirqd/1121750irq/30-eth0_g0_09:33:240
121420ksoftirqd/1121750irq/30-eth0_g0_09:07:490
121420ksoftirqd/1121650irq/29-eth0_g0_12:02:381
121420ksoftirqd/1121650irq/29-eth0_g0_11:51:091
121420ksoftirqd/1121650irq/29-eth0_g0_11:51:091
121650410irq/29-eth0_g0_13-21kworker/0:110:36:440
121650410irq/29-eth0_g0_13-21kworker/0:110:19:080
121650410irq/29-eth0_g0_0-21swapper/112:02:301
121410ksoftirqd/1121650irq/29-eth0_g0_07:52:441
2964999401cyclictest50712sleep107:37:501
2964999401cyclictest31351-21taskset07:12:501
2964999401cyclictest25196-21missed_timers11:12:471
121650400irq/29-eth0_g0_31ksoftirqd/011:02:330
121650400irq/29-eth0_g0_28733-21iostat07:02:450
121650400irq/29-eth0_g0_13-21kworker/0:112:23:100
121650400irq/29-eth0_g0_13-21kworker/0:112:13:140
121650400irq/29-eth0_g0_13-21kworker/0:111:27:120
121650400irq/29-eth0_g0_13-21kworker/0:109:26:390
121400ksoftirqd/1121750irq/30-eth0_g0_11:33:310
121400ksoftirqd/1121750irq/30-eth0_g0_10:46:310
121400ksoftirqd/1121750irq/30-eth0_g0_09:59:230
121400ksoftirqd/1121650irq/29-eth0_g0_10:01:521
87562390sleep0121650irq/29-eth0_g0_10:06:020
2964999391cyclictest7800-21grep07:47:541
2964999391cyclictest4585-21ls07:37:311
2964999391cyclictest106972sleep108:02:311
121750390irq/30-eth0_g0_1219-21kworker/1:212:34:351
121750390irq/30-eth0_g0_1219-21kworker/1:212:28:221
121750390irq/30-eth0_g0_1219-21kworker/1:212:28:221
121750390irq/30-eth0_g0_1219-21kworker/1:211:08:261
121750390irq/30-eth0_g0_1219-21kworker/1:209:30:491
121750390irq/30-eth0_g0_121ksoftirqd/111:54:211
121650390irq/29-eth0_g0_31ksoftirqd/007:57:480
121650390irq/29-eth0_g0_18394-21cat08:32:450
121650390irq/29-eth0_g0_13-21kworker/0:110:50:210
121650390irq/29-eth0_g0_121ksoftirqd/111:29:390
121650390irq/29-eth0_g0_121ksoftirqd/111:04:421
121390ksoftirqd/1121750irq/30-eth0_g0_12:33:130
121390ksoftirqd/1121750irq/30-eth0_g0_12:11:140
121390ksoftirqd/1121750irq/30-eth0_g0_11:58:500
121390ksoftirqd/1121750irq/30-eth0_g0_11:54:580
121390ksoftirqd/1121750irq/30-eth0_g0_11:48:570
121390ksoftirqd/1121750irq/30-eth0_g0_11:48:570
121390ksoftirqd/1121750irq/30-eth0_g0_11:12:000
121390ksoftirqd/1121750irq/30-eth0_g0_11:00:380
121390ksoftirqd/1121750irq/30-eth0_g0_10:55:530
121390ksoftirqd/1121750irq/30-eth0_g0_10:12:450
121390ksoftirqd/1121750irq/30-eth0_g0_09:17:390
121390ksoftirqd/1121750irq/30-eth0_g0_09:06:020
121390ksoftirqd/1121750irq/30-eth0_g0_08:58:350
121390ksoftirqd/1121750irq/30-eth0_g0_08:43:520
121390ksoftirqd/1121750irq/30-eth0_g0_08:22:570
121390ksoftirqd/1121750irq/30-eth0_g0_08:22:570
121390ksoftirqd/1121750irq/30-eth0_g0_08:21:290
121390ksoftirqd/1121750irq/30-eth0_g0_08:21:290
121390ksoftirqd/1121750irq/30-eth0_g0_08:17:120
121390ksoftirqd/1121750irq/30-eth0_g0_07:31:260
29649993833cyclictest26603-21diskmemload09:32:481
2964999382cyclictest6515-21grep07:42:521
2964999381cyclictest11493-21unixbench_singl08:02:531
121750380irq/30-eth0_g0_2964999cyclictest10:49:241
121750380irq/30-eth0_g0_1219-21kworker/1:212:19:591
121750380irq/30-eth0_g0_1219-21kworker/1:210:03:461
121750380irq/30-eth0_g0_121ksoftirqd/112:24:071
121750380irq/30-eth0_g0_121ksoftirqd/110:08:391
121650380irq/29-eth0_g0_31ksoftirqd/009:16:440
121650380irq/29-eth0_g0_29647-21cyclictest10:25:540
121650380irq/29-eth0_g0_1964-21runrttasks09:28:100
121650380irq/29-eth0_g0_13-21kworker/0:112:19:280
121650380irq/29-eth0_g0_121ksoftirqd/111:40:470
121380ksoftirqd/1121750irq/30-eth0_g0_09:37:460
121380ksoftirqd/1121650irq/29-eth0_g0_09:50:321
2964999371cyclictest156292sleep110:32:501
2964999371cyclictest13875-21sed08:12:521
121650370irq/29-eth0_g0_13-21kworker/0:109:45:080
121650370irq/29-eth0_g0_121ksoftirqd/112:07:411
2964999361cyclictest2614-21ntpq07:27:491
2964999361cyclictest22482-21head08:47:531
2964999361cyclictest20953-21awk08:42:471
2964999361cyclictest19295-21ls08:37:311
2964999361cyclictest12544-21find08:07:521
2964999361cyclictest0-21swapper/109:02:491
121750360irq/30-eth0_g0_1219-21kworker/1:209:26:211
121650360irq/29-eth0_g0_3829-21ntp_kernel_err07:32:500
121650360irq/29-eth0_g0_31550-21cat07:12:550
121650360irq/29-eth0_g0_19483-21df08:37:430
121650360irq/29-eth0_g0_17588-21unixbench_singl08:27:520
121650360irq/29-eth0_g0_11345-21sendmail_mailtr08:02:510
121650360irq/29-eth0_g0_0-21swapper/007:37:490
121360ksoftirqd/1121750irq/30-eth0_g0_07:11:500
2964999351cyclictest23087-21df08:52:441
121750350irq/30-eth0_g0_14517-21taskset08:17:421
121750350irq/30-eth0_g0_14517-21taskset08:17:421
121650350irq/29-eth0_g0_0-21swapper/008:47:420
121650350irq/29-eth0_g0_0-21swapper/007:42:500
121750340irq/30-eth0_g0_32188-21/usr/sbin/munin07:17:541
121650340irq/29-eth0_g0_1219-21kworker/1:210:17:341
121650340irq/29-eth0_g0_0-21swapper/007:22:500
2964999332cyclictest0-21swapper/108:26:461
2964999332cyclictest0-21swapper/108:26:461
121650330irq/29-eth0_g0_7651-21sendmail_mailqu07:47:520
121650320irq/29-eth0_g0_8669-21sort07:52:490
2964999301cyclictest17536-21unixbench_multi08:27:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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