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2026-06-28 - 18:30

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 Sun Jun 28, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2651721290sleep1121750irq/30-eth0_g0_09:50:301
2651721290sleep1121750irq/30-eth0_g0_09:50:301
23812920sleep0121650irq/29-eth0_g0_12:37:500
23812920sleep0121650irq/29-eth0_g0_12:37:500
78632740sleep1121750irq/30-eth0_g0_10:48:331
103172740chrt121650irq/29-eth0_g0_10:58:330
90882710sleep1121750irq/30-eth0_g0_08:38:561
83412650sleep0121750irq/30-eth0_g0_10:48:490
121610ksoftirqd/1121750irq/30-eth0_g0_11:13:531
271642590sleep0121650irq/29-eth0_g0_12:04:370
125192530sleep1121750irq/30-eth0_g0_08:53:511
254932490sleep1121750irq/30-eth0_g0_09:47:561
185682490sleep1121650irq/29-eth0_g0_11:29:391
277682480chrt121750irq/30-eth0_g0_12:08:461
121650460irq/29-eth0_g0_31177-21grep10:08:540
121750440irq/30-eth0_g0_1219-21kworker/1:211:11:311
121750440irq/30-eth0_g0_121ksoftirqd/111:23:521
121750440irq/30-eth0_g0_121ksoftirqd/111:23:521
121650440irq/29-eth0_g0_13-21kworker/0:109:11:220
121750430irq/30-eth0_g0_32559-21df12:28:421
121750430irq/30-eth0_g0_1219-21kworker/1:210:42:291
121750430irq/30-eth0_g0_1219-21kworker/1:210:42:291
121750430irq/30-eth0_g0_1219-21kworker/1:209:25:091
121750430irq/30-eth0_g0_1219-21kworker/1:209:14:021
121750430irq/30-eth0_g0_10315-21munin-run10:58:331
121750420irq/30-eth0_g0_1219-21kworker/1:209:20:321
121750420irq/30-eth0_g0_121ksoftirqd/107:33:551
121650420irq/29-eth0_g0_1964-21runrttasks11:22:030
121650420irq/29-eth0_g0_13-21kworker/0:112:20:340
121650420irq/29-eth0_g0_13-21kworker/0:111:15:160
121650420irq/29-eth0_g0_13-21kworker/0:110:40:380
121650420irq/29-eth0_g0_13-21kworker/0:110:40:380
18694994135cyclictest23170-21grep07:23:561
121750410irq/30-eth0_g0_31ksoftirqd/010:06:140
121750410irq/30-eth0_g0_24246-21taskset09:42:411
121750410irq/30-eth0_g0_1219-21kworker/1:211:43:491
121750410irq/30-eth0_g0_1219-21kworker/1:210:27:381
121750410irq/30-eth0_g0_121ksoftirqd/109:33:481
121650410irq/29-eth0_g0_31ksoftirqd/012:28:440
121650410irq/29-eth0_g0_2963-21latency_hist10:28:330
121650410irq/29-eth0_g0_18960-21date11:33:330
121650410irq/29-eth0_g0_17865-21cat07:03:480
121650410irq/29-eth0_g0_13-21kworker/0:110:36:100
121650410irq/29-eth0_g0_13-21kworker/0:109:38:460
121650410irq/29-eth0_g0_0-21swapper/008:38:570
211172400sleep1121750irq/30-eth0_g0_11:40:431
18694994035cyclictest7512-21latency08:33:531
18694994034cyclictest30048-21cpu12:18:421
18694994034cyclictest29998-21grep10:03:551
18694994034cyclictest27412-21sendmail_mailqu09:53:541
121750400irq/30-eth0_g0_24052-21df_abs11:53:441
121750400irq/30-eth0_g0_1219-21kworker/1:210:58:481
121750400irq/30-eth0_g0_121ksoftirqd/112:24:171
121750400irq/30-eth0_g0_121ksoftirqd/110:52:011
121650400irq/29-eth0_g0_1964-21runrttasks07:33:540
121650400irq/29-eth0_g0_13-21kworker/0:112:26:440
121650400irq/29-eth0_g0_13-21kworker/0:112:14:520
121650400irq/29-eth0_g0_13-21kworker/0:111:47:310
121650400irq/29-eth0_g0_13-21kworker/0:110:46:470
121650400irq/29-eth0_g0_13-21kworker/0:110:20:410
121650400irq/29-eth0_g0_13-21kworker/0:109:50:280
121650400irq/29-eth0_g0_13-21kworker/0:109:50:280
121650400irq/29-eth0_g0_13-21kworker/0:109:18:340
121650400irq/29-eth0_g0_0-21swapper/009:43:540
121650400irq/29-eth0_g0_0-21swapper/009:23:480
18694993934cyclictest4942-21chrt10:33:561
18694993934cyclictest3583-21sendmail_mailqu10:28:531
18694993934cyclictest32045-21latency10:13:471
18694993934cyclictest29271-21ls10:03:331
18694993933cyclictest30877-21missed_timers10:08:481
18694993932cyclictest32224-21latency_hist08:03:341
121750390irq/30-eth0_g0_5101-21missed_timers08:23:491
121750390irq/30-eth0_g0_1219-21kworker/1:212:13:531
121750390irq/30-eth0_g0_1219-21kworker/1:210:23:281
121750390irq/30-eth0_g0_121ksoftirqd/109:08:401
121650390irq/29-eth0_g0_31ksoftirqd/010:30:120
121650390irq/29-eth0_g0_31ksoftirqd/008:23:450
121650390irq/29-eth0_g0_229092sleep009:36:230
121650390irq/29-eth0_g0_1964-21runrttasks11:01:310
121650390irq/29-eth0_g0_13-21kworker/0:111:41:330
121650390irq/29-eth0_g0_13-21kworker/0:111:35:540
121650390irq/29-eth0_g0_13-21kworker/0:111:10:220
121650390irq/29-eth0_g0_13-21kworker/0:110:16:490
121650390irq/29-eth0_g0_13-21kworker/0:110:00:060
121650390irq/29-eth0_g0_13-21kworker/0:109:54:020
121650390irq/29-eth0_g0_13-21kworker/0:109:32:310
121650390irq/29-eth0_g0_121ksoftirqd/112:38:081
121650390irq/29-eth0_g0_121ksoftirqd/112:38:081
121650390irq/29-eth0_g0_121ksoftirqd/111:22:551
121650390irq/29-eth0_g0_0-21swapper/008:13:460
18694993833cyclictest3849-21missed_timers08:18:481
18694993833cyclictest3849-21missed_timers08:18:481
18694993833cyclictest19632-21unixbench_multi11:33:541
121750380irq/30-eth0_g0_2983-21unixbench_multi08:13:541
121750380irq/30-eth0_g0_22890-21seq11:48:451
121750380irq/30-eth0_g0_22890-21seq11:48:451
121750380irq/30-eth0_g0_1219-21kworker/1:212:06:361
121750380irq/30-eth0_g0_1219-21kworker/1:211:06:101
121750380irq/30-eth0_g0_121ksoftirqd/108:03:541
121750380irq/30-eth0_g0_0-21swapper/112:03:181
121650380irq/29-eth0_g0_1964-21runrttasks08:47:290
121650380irq/29-eth0_g0_1964-21runrttasks08:37:570
121650380irq/29-eth0_g0_1964-21runrttasks08:09:530
121650380irq/29-eth0_g0_13-21kworker/0:112:11:380
121650380irq/29-eth0_g0_13-21kworker/0:112:03:020
121650380irq/29-eth0_g0_13-21kworker/0:109:19:390
121650380irq/29-eth0_g0_11145-21irqstats08:48:450
121650380irq/29-eth0_g0_0-21swapper/011:03:530
121650380irq/29-eth0_g0_0-21swapper/007:28:480
18694993730cyclictest19926-21latency_hist07:13:341
121750370irq/30-eth0_g0_1964-21runrttasks07:03:401
121750370irq/30-eth0_g0_1219-21kworker/1:209:29:101
121650370irq/29-eth0_g0_32747-21proc_pri08:03:510
121650370irq/29-eth0_g0_28916-21missed_timers07:48:480
121650370irq/29-eth0_g0_22678-21/usr/sbin/munin11:48:420
121650370irq/29-eth0_g0_22678-21/usr/sbin/munin11:48:420
121650370irq/29-eth0_g0_21307-21df_abs07:18:450
121650370irq/29-eth0_g0_1964-21runrttasks08:29:210
121650370irq/29-eth0_g0_1964-21runrttasks07:43:310
121650370irq/29-eth0_g0_13-21kworker/0:111:56:580
121650370irq/29-eth0_g0_13-21kworker/0:111:27:200
121650370irq/29-eth0_g0_13-21kworker/0:111:27:200
121650370irq/29-eth0_g0_12830-21grep08:53:560
121650370irq/29-eth0_g0_0-21swapper/008:58:510
18694993630cyclictest10090-21ntp_states08:43:521
1869499362cyclictest27700-21missed_timers07:43:481
121750360irq/30-eth0_g0_30453-21grep07:53:541
121650360irq/29-eth0_g0_31604-21sendmail_mailst07:58:520
121650360irq/29-eth0_g0_28073-21sed07:43:540
121360ksoftirqd/11869299cyclictest07:18:190
121750350irq/30-eth0_g0_28906-21ls07:48:481
121650350irq/29-eth0_g0_30067-21irqstats07:53:480
121650350irq/29-eth0_g0_15174-21timerandwakeup09:03:530
121650350irq/29-eth0_g0_0-21swapper/007:11:320
18694993430cyclictest0-21swapper/107:13:541
18694993428cyclictest6538-21sendmail_mailqu08:28:541
18694993428cyclictest2007-21runrttasks08:11:011
18694993428cyclictest14585-21runrttasks09:03:381
18694993428cyclictest14381-21runrttasks09:02:101
18694993428cyclictest11866-21runrttasks08:51:281
121650340irq/29-eth0_g0_3550-21/usr/sbin/munin08:18:470
121650340irq/29-eth0_g0_3550-21/usr/sbin/munin08:18:470
121650340irq/29-eth0_g0_22853-21ntp_offset07:23:510
18694993329cyclictest0-21swapper/107:33:341
18694993328cyclictest0-21swapper/107:38:531
121750320irq/30-eth0_g0_21224-21latency_hist07:18:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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