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2026-01-10 - 20:20

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Sat Jan 10, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
250852980sleep0121750irq/30-eth0_g0_11:13:520
121870ksoftirqd/1121750irq/30-eth0_g0_07:25:051
121850ksoftirqd/1121650irq/29-eth0_g0_11:50:150
14052780sleep1121750irq/30-eth0_g0_11:50:041
245572670sleep0121750irq/30-eth0_g0_08:59:550
59692570sleep1121650irq/29-eth0_g0_12:06:521
279532560sleep0121750irq/30-eth0_g0_09:11:400
18982550sleep1121750irq/30-eth0_g0_09:39:421
121550ksoftirqd/1121750irq/30-eth0_g0_10:25:090
313072530sleep1121750irq/30-eth0_g0_09:25:141
224792520sleep0121750irq/30-eth0_g0_11:02:030
195242490sleep1121750irq/30-eth0_g0_10:50:101
184462490sleep1121750irq/30-eth0_g0_08:34:531
121490ksoftirqd/1121750irq/30-eth0_g0_09:58:530
121480ksoftirqd/1121750irq/30-eth0_g0_11:14:551
121470ksoftirqd/1121750irq/30-eth0_g0_12:02:461
121460ksoftirqd/1121650irq/29-eth0_g0_12:13:191
121460ksoftirqd/1121650irq/29-eth0_g0_10:25:151
3612450chrt121750irq/30-eth0_g0_09:31:240
121650450irq/29-eth0_g0_9757-21ntp_offset10:10:100
121650450irq/29-eth0_g0_121ksoftirqd/110:54:550
121450ksoftirqd/1121750irq/30-eth0_g0_09:13:321
121450ksoftirqd/1121650irq/29-eth0_g0_08:26:501
121450ksoftirqd/1121650irq/29-eth0_g0_08:12:001
121650440irq/29-eth0_g0_31ksoftirqd/010:00:160
121650440irq/29-eth0_g0_1988-21runrttasks09:22:410
121440ksoftirqd/1121750irq/30-eth0_g0_12:26:100
121440ksoftirqd/1121750irq/30-eth0_g0_11:45:260
121440ksoftirqd/1121650irq/29-eth0_g0_12:20:551
121440ksoftirqd/1121650irq/29-eth0_g0_08:38:311
86342430sleep0121750irq/30-eth0_g0_12:19:260
121750430irq/30-eth0_g0_470-21kworker/1:111:40:451
121750430irq/30-eth0_g0_470-21kworker/1:110:12:121
121650430irq/29-eth0_g0_31ksoftirqd/007:07:540
121430ksoftirqd/1121750irq/30-eth0_g0_10:54:581
121430ksoftirqd/1121650irq/29-eth0_g0_08:03:231
121750420irq/30-eth0_g0_470-21kworker/1:110:32:141
121750420irq/30-eth0_g0_133242sleep012:37:000
121650420irq/29-eth0_g0_31ksoftirqd/012:23:490
121420ksoftirqd/1121650irq/29-eth0_g0_11:36:391
121420ksoftirqd/1121650irq/29-eth0_g0_11:05:161
121750410irq/30-eth0_g0_470-21kworker/1:111:33:261
121750410irq/30-eth0_g0_470-21kworker/1:110:43:231
121650410irq/29-eth0_g0_31ksoftirqd/010:31:440
121650410irq/29-eth0_g0_13-21kworker/0:112:32:360
121650410irq/29-eth0_g0_13-21kworker/0:109:29:020
121410ksoftirqd/1121650irq/29-eth0_g0_12:28:531
121410ksoftirqd/1121650irq/29-eth0_g0_10:49:241
121410ksoftirqd/1121650irq/29-eth0_g0_10:02:261
121410ksoftirqd/1121650irq/29-eth0_g0_09:48:071
121410ksoftirqd/1121650irq/29-eth0_g0_09:48:071
121750400irq/30-eth0_g0_470-21kworker/1:112:30:091
121750400irq/30-eth0_g0_470-21kworker/1:109:33:551
121750400irq/30-eth0_g0_20168-21ntp_states08:40:141
121650400irq/29-eth0_g0_27007-21diskmemload12:07:450
121650400irq/29-eth0_g0_23939-21sshd11:09:490
121650400irq/29-eth0_g0_1988-21runrttasks10:49:320
121650400irq/29-eth0_g0_1950-21sshd10:42:480
121650400irq/29-eth0_g0_132kworker/0:110:20:060
121650400irq/29-eth0_g0_13-21kworker/0:111:27:500
3008299391cyclictest8103-21cat07:50:141
3008299391cyclictest217462sleep111:00:061
121750390irq/30-eth0_g0_470-21kworker/1:111:13:491
121750390irq/30-eth0_g0_14041-21ntpq08:15:101
121750390irq/30-eth0_g0_14041-21ntpq08:15:101
121750390irq/30-eth0_g0_121ksoftirqd/112:16:471
121750390irq/30-eth0_g0_121ksoftirqd/110:19:531
121650390irq/29-eth0_g0_1988-21runrttasks08:11:140
121650390irq/29-eth0_g0_13-21kworker/0:110:58:040
121650390irq/29-eth0_g0_121ksoftirqd/109:46:130
121650390irq/29-eth0_g0_121ksoftirqd/109:46:130
121650390irq/29-eth0_g0_0-21swapper/107:05:121
121390ksoftirqd/1121750irq/30-eth0_g0_11:41:570
121390ksoftirqd/1121750irq/30-eth0_g0_11:36:010
121390ksoftirqd/1121750irq/30-eth0_g0_11:21:270
121390ksoftirqd/1121750irq/30-eth0_g0_11:21:270
121390ksoftirqd/1121750irq/30-eth0_g0_11:19:340
121390ksoftirqd/1121750irq/30-eth0_g0_10:38:510
121390ksoftirqd/1121750irq/30-eth0_g0_09:43:200
121390ksoftirqd/1121750irq/30-eth0_g0_09:35:590
121390ksoftirqd/1121750irq/30-eth0_g0_09:18:460
121390ksoftirqd/1121750irq/30-eth0_g0_08:53:090
121390ksoftirqd/1121750irq/30-eth0_g0_08:47:220
121390ksoftirqd/1121750irq/30-eth0_g0_08:20:290
121390ksoftirqd/1121750irq/30-eth0_g0_08:20:290
121390ksoftirqd/1121750irq/30-eth0_g0_08:18:500
121390ksoftirqd/1121750irq/30-eth0_g0_08:18:500
121390ksoftirqd/1121750irq/30-eth0_g0_08:06:350
121390ksoftirqd/1121750irq/30-eth0_g0_07:17:320
121390ksoftirqd/1121650irq/29-eth0_g0_10:39:371
3008299382cyclictest27011-21/usr/sbin/munin11:20:121
3008299382cyclictest27011-21/usr/sbin/munin11:20:121
3008299381cyclictest12992-21awk12:35:161
121750380irq/30-eth0_g0_0-21swapper/109:50:151
121750380irq/30-eth0_g0_0-21swapper/109:23:131
121650380irq/29-eth0_g0_1988-21runrttasks12:10:560
121650380irq/29-eth0_g0_1988-21runrttasks09:06:400
121650380irq/29-eth0_g0_13-21kworker/0:112:00:080
121650380irq/29-eth0_g0_13-21kworker/0:110:18:160
121380ksoftirqd/1121750irq/30-eth0_g0_11:57:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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