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2025-11-28 - 02:23

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 all highest latencies:
System rack3slot5s.osadl.org (updated Fri Nov 28, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
551121600sleep0121750irq/29-eth0_g0_22:27:450
551121600sleep0121750irq/29-eth0_g0_22:27:450
418321390sleep1121750irq/29-eth0_g0_23:43:571
1571221060sleep1121750irq/29-eth0_g0_22:52:321
1211040ksoftirqd/1121850irq/30-eth0_g0_19:05:210
1211000ksoftirqd/1121850irq/30-eth0_g0_20:45:331
27922980sleep1121850irq/30-eth0_g0_21:01:411
92042960sleep0121850irq/30-eth0_g0_21:17:430
121960ksoftirqd/1121850irq/30-eth0_g0_20:54:521
121950ksoftirqd/1121750irq/29-eth0_g0_21:22:080
244922940sleep1121750irq/29-eth0_g0_00:33:061
121920ksoftirqd/1121850irq/30-eth0_g0_21:50:331
121890ksoftirqd/1121850irq/30-eth0_g0_00:20:311
121890ksoftirqd/1121750irq/29-eth0_g0_21:50:180
91772880sleep1121850irq/30-eth0_g0_21:17:371
121880ksoftirqd/1121750irq/29-eth0_g0_00:36:440
121880ksoftirqd/1121750irq/29-eth0_g0_00:36:440
121870ksoftirqd/1121850irq/30-eth0_g0_19:49:441
19452800sleep1121750irq/29-eth0_g0_22:19:571
12072800sleep1121850irq/30-eth0_g0_23:35:231
320392780sleep0121850irq/30-eth0_g0_22:13:500
291992780chrt121850irq/30-eth0_g0_22:05:431
47442750sleep0121850irq/30-eth0_g0_19:47:530
121750ksoftirqd/1121850irq/30-eth0_g0_19:51:120
242582740sleep1121850irq/30-eth0_g0_19:15:321
158482740sleep1121850irq/30-eth0_g0_00:11:211
50342730sleep1121750irq/29-eth0_g0_21:07:281
215482730sleep1121850irq/30-eth0_g0_20:29:271
215482730sleep1121850irq/30-eth0_g0_20:29:271
121720ksoftirqd/1121850irq/30-eth0_g0_20:49:480
194232710sleep0121850irq/30-eth0_g0_23:00:580
158992710sleep0121850irq/30-eth0_g0_00:11:340
172562700sleep1121750irq/29-eth0_g0_21:37:091
131362700sleep0121750irq/29-eth0_g0_22:45:270
176742660sleep0121750irq/29-eth0_g0_00:15:300
26382650sleep1121850irq/30-eth0_g0_19:42:401
68422640sleep1121750irq/29-eth0_g0_21:11:281
60692640sleep0121850irq/30-eth0_g0_23:48:170
121640ksoftirqd/1181872chrt22:59:120
109932630sleep1121850irq/30-eth0_g0_20:03:181
90052620sleep1121850irq/30-eth0_g0_19:58:321
113202620sleep1121850irq/30-eth0_g0_22:41:231
121600ksoftirqd/1153372sleep021:32:410
279902570sleep1121750irq/29-eth0_g0_23:22:221
169562560chrt121750irq/29-eth0_g0_00:15:121
121560ksoftirqd/1121850irq/30-eth0_g0_21:47:510
31742550sleep0121850irq/30-eth0_g0_22:21:360
126942550sleep1121850irq/30-eth0_g0_21:25:241
121550ksoftirqd/14182sleep020:55:350
121750540irq/29-eth0_g0_12473-21processes21:25:210
258622530sleep0121850irq/30-eth0_g0_23:17:040
154112530sleep1121850irq/30-eth0_g0_21:32:591
104722530sleep0121750irq/29-eth0_g0_22:40:110
197292520sleep1121850irq/30-eth0_g0_21:43:501
121520ksoftirqd/1121750irq/29-eth0_g0_00:27:061
121510ksoftirqd/1121850irq/30-eth0_g0_20:03:100
102672510sleep0121850irq/30-eth0_g0_23:58:380
261932500chrt121850irq/30-eth0_g0_00:36:441
261932500chrt121850irq/30-eth0_g0_00:36:441
145852500sleep1121850irq/30-eth0_g0_00:09:281
78462490sleep1121850irq/30-eth0_g0_22:33:521
201272490sleep0121750irq/29-eth0_g0_00:22:050
13482490sleep1121850irq/30-eth0_g0_20:59:121
68012470sleep0121750irq/29-eth0_g0_21:11:180
121470ksoftirqd/149952sleep021:07:180
121470ksoftirqd/1121750irq/29-eth0_g0_00:32:190
168712460sleep1121850irq/30-eth0_g0_22:55:161
122582450sleep1121850irq/30-eth0_g0_00:03:231
121850450irq/30-eth0_g0_470-21kworker/1:123:47:521
121450ksoftirqd/1121850irq/30-eth0_g0_23:57:041
121450ksoftirqd/1121850irq/30-eth0_g0_19:27:191
316992440sleep1121850irq/30-eth0_g0_23:30:491
121750440irq/29-eth0_g0_121ksoftirqd/121:40:130
121750440irq/29-eth0_g0_0-21swapper/023:25:150
121440ksoftirqd/1291722sleep022:05:360
121440ksoftirqd/1121850irq/30-eth0_g0_23:00:201
285662430sleep0121750irq/29-eth0_g0_23:24:400
121850430irq/30-eth0_g0_470-21kworker/1:122:02:061
121430ksoftirqd/1121750irq/29-eth0_g0_22:36:341
121430ksoftirqd/1121750irq/29-eth0_g0_22:20:191
121430ksoftirqd/1121750irq/29-eth0_g0_21:45:211
121750420irq/29-eth0_g0_31ksoftirqd/023:44:100
121750420irq/29-eth0_g0_16346-21latency_hist22:54:580
121750420irq/29-eth0_g0_14738-21seq00:09:590
111592420sleep0121750irq/29-eth0_g0_00:00:190
273942410sleep02175-21runrttasks22:01:420
2126899411cyclictest5982-21chrt19:50:211
121850410irq/30-eth0_g0_31552-21taskset22:11:541
121750410irq/29-eth0_g0_1932-21runrttasks19:26:140
121750410irq/29-eth0_g0_121ksoftirqd/119:14:581
2126899401cyclictest18420-21unixbench_singl20:20:221
18022400sleep0121750irq/29-eth0_g0_19:40:170
121850400irq/30-eth0_g0_19985-21unixbench_multi19:05:201
121750400irq/29-eth0_g0_253512sleep019:19:540
121750400irq/29-eth0_g0_13-21kworker/0:123:35:490
121750400irq/29-eth0_g0_13-21kworker/0:123:10:580
121750400irq/29-eth0_g0_13-21kworker/0:122:39:040
121750400irq/29-eth0_g0_13-21kworker/0:121:55:460
121400ksoftirqd/1121850irq/30-eth0_g0_00:26:180
121400ksoftirqd/1121750irq/29-eth0_g0_22:26:201
121400ksoftirqd/1121750irq/29-eth0_g0_22:26:201
121400ksoftirqd/1121750irq/29-eth0_g0_21:21:231
121400ksoftirqd/1121750irq/29-eth0_g0_20:37:001
121400ksoftirqd/1121750irq/29-eth0_g0_19:22:471
121850390irq/30-eth0_g0_470-21kworker/1:123:17:051
121750390irq/29-eth0_g0_13-21kworker/0:123:54:000
121750390irq/29-eth0_g0_13-21kworker/0:122:15:100
121750390irq/29-eth0_g0_13-21kworker/0:121:36:320
121390ksoftirqd/1121750irq/29-eth0_g0_23:08:181
121390ksoftirqd/1121750irq/29-eth0_g0_21:55:351
2126899381cyclictest265762sleep120:40:211
2126899381cyclictest242202sleep123:13:411
2126899381cyclictest21963-21/usr/sbin/munin20:30:111
2126899381cyclictest141352sleep120:10:181
121850380irq/30-eth0_g0_470-21kworker/1:123:27:291
121850380irq/30-eth0_g0_13374-21runrttasks20:09:371
121850380irq/30-eth0_g0_13374-21runrttasks20:09:371
121750380irq/29-eth0_g0_30260-21unixbench_multi19:30:200
121750380irq/29-eth0_g0_31ksoftirqd/020:38:590
121750380irq/29-eth0_g0_21696-21load19:10:140
121750380irq/29-eth0_g0_1932-21runrttasks20:43:390
121380ksoftirqd/1121750irq/29-eth0_g0_19:35:251
121380ksoftirqd/1121750irq/29-eth0_g0_19:35:251
227092370sleep0121750irq/29-eth0_g0_20:30:550
2126899372cyclictest29649-21df19:30:091
2126899371cyclictest2566-21runrttasks23:50:361
2126899371cyclictest126572sleep122:45:151
121850370irq/30-eth0_g0_1932-21runrttasks20:18:501
121750370irq/29-eth0_g0_31646-21/usr/sbin/munin19:35:100
121750370irq/29-eth0_g0_31646-21/usr/sbin/munin19:35:100
121750370irq/29-eth0_g0_31ksoftirqd/022:31:240
121750370irq/29-eth0_g0_2566-21runrttasks21:03:000
121750370irq/29-eth0_g0_21206-21unixbench_multi23:05:200
121750370irq/29-eth0_g0_19753-21/usr/sbin/munin20:25:200
121750370irq/29-eth0_g0_19753-21/usr/sbin/munin20:25:200
121750370irq/29-eth0_g0_1932-21runrttasks20:50:440
121750370irq/29-eth0_g0_0-21swapper/023:30:430
121750360irq/29-eth0_g0_8118-21unixbench_multi19:55:200
121750360irq/29-eth0_g0_25748-21grep19:20:160
121750360irq/29-eth0_g0_2175-21runrttasks20:18:240
121750360irq/29-eth0_g0_12090-21chrt20:05:190
121750360irq/29-eth0_g0_12090-21chrt20:05:190
121750360irq/29-eth0_g0_0-21swapper/020:21:020
121750350irq/29-eth0_g0_14586-21runrttasks20:11:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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