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2025-11-27 - 09:02

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 Thu Nov 27, 2025 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2303221490sleep1121750irq/29-eth0_g0_21:13:081
1211010ksoftirqd/1121850irq/30-eth0_g0_23:21:531
1211010ksoftirqd/1121850irq/30-eth0_g0_22:19:211
1211010ksoftirqd/1121850irq/30-eth0_g0_21:05:111
1211010ksoftirqd/1121850irq/30-eth0_g0_21:05:111
121990ksoftirqd/1121850irq/30-eth0_g0_00:06:181
121960ksoftirqd/1121850irq/30-eth0_g0_20:59:101
121960ksoftirqd/1121850irq/30-eth0_g0_20:22:311
121960ksoftirqd/1121850irq/30-eth0_g0_19:38:481
121960ksoftirqd/1121850irq/30-eth0_g0_19:38:481
121920ksoftirqd/1121850irq/30-eth0_g0_23:51:251
121920ksoftirqd/1121750irq/29-eth0_g0_00:18:240
121880ksoftirqd/1121850irq/30-eth0_g0_00:16:051
121880ksoftirqd/1121750irq/29-eth0_g0_23:41:530
121850ksoftirqd/1121850irq/30-eth0_g0_00:04:001
86232830sleep1121850irq/30-eth0_g0_19:15:191
86232830sleep1121850irq/30-eth0_g0_19:15:191
286552820sleep1121850irq/30-eth0_g0_20:05:111
121820ksoftirqd/1186802sleep021:02:120
50192800sleep1121850irq/30-eth0_g0_00:25:211
253452800sleep1121850irq/30-eth0_g0_23:55:211
121790ksoftirqd/1121850irq/30-eth0_g0_19:53:500
212352760sleep1121850irq/30-eth0_g0_19:45:331
108852760sleep1121850irq/30-eth0_g0_20:43:561
65172750sleep1121850irq/30-eth0_g0_21:50:531
65172750sleep1121850irq/30-eth0_g0_21:50:531
121730ksoftirqd/1238432sleep022:34:190
23782720sleep1121850irq/30-eth0_g0_21:40:511
51492690sleep0121850irq/30-eth0_g0_20:27:510
234942680sleep1121750irq/29-eth0_g0_22:32:561
133582680sleep1121850irq/30-eth0_g0_22:08:311
121680ksoftirqd/1121850irq/30-eth0_g0_21:30:200
121670ksoftirqd/1121850irq/30-eth0_g0_22:10:560
246252660sleep1121850irq/30-eth0_g0_21:16:191
121650ksoftirqd/1121042sleep022:05:160
106342650sleep0121850irq/30-eth0_g0_19:20:220
272762640sleep1121850irq/30-eth0_g0_20:00:241
121640ksoftirqd/181022sleep021:55:170
121640ksoftirqd/1121850irq/30-eth0_g0_23:35:220
121610ksoftirqd/1238282sleep023:52:150
121610ksoftirqd/1214932sleep023:46:090
121590ksoftirqd/153322sleep023:07:200
32142580sleep0121850irq/30-eth0_g0_23:02:060
35232560sleep1121850irq/30-eth0_g0_00:21:171
121540ksoftirqd/1121850irq/30-eth0_g0_19:42:451
18582530sleep1121850irq/30-eth0_g0_22:59:591
121530ksoftirqd/1121850irq/30-eth0_g0_22:27:051
121520ksoftirqd/1121750irq/29-eth0_g0_00:01:130
121500ksoftirqd/1121850irq/30-eth0_g0_21:35:261
121500ksoftirqd/1121850irq/30-eth0_g0_19:44:360
121490ksoftirqd/1121850irq/30-eth0_g0_20:24:230
121490ksoftirqd/1121850irq/30-eth0_g0_19:35:170
121490ksoftirqd/1121850irq/30-eth0_g0_19:35:170
121490ksoftirqd/1121850irq/30-eth0_g0_00:32:061
282862480sleep0121750irq/29-eth0_g0_20:04:020
250472480sleep0121750irq/29-eth0_g0_22:35:570
121480ksoftirqd/1121850irq/30-eth0_g0_23:13:010
121480ksoftirqd/1121850irq/30-eth0_g0_20:16:231
121850460irq/30-eth0_g0_470-21kworker/1:121:28:511
121460ksoftirqd/1121850irq/30-eth0_g0_19:52:371
121460ksoftirqd/1121750irq/29-eth0_g0_23:46:021
121460ksoftirqd/1121750irq/29-eth0_g0_23:36:221
121460ksoftirqd/1121750irq/29-eth0_g0_20:10:321
121750450irq/29-eth0_g0_4171-21/usr/sbin/munin19:05:130
121850440irq/30-eth0_g0_470-21kworker/1:122:41:461
121440ksoftirqd/1121850irq/30-eth0_g0_22:20:581
121440ksoftirqd/1121850irq/30-eth0_g0_22:20:581
121440ksoftirqd/1121850irq/30-eth0_g0_21:24:271
121440ksoftirqd/1121850irq/30-eth0_g0_00:21:020
118272440sleep0121750irq/29-eth0_g0_20:45:200
121850430irq/30-eth0_g0_470-21kworker/1:123:26:341
121750430irq/29-eth0_g0_6036-21cpu19:10:110
121750430irq/29-eth0_g0_31ksoftirqd/022:46:350
121750430irq/29-eth0_g0_31ksoftirqd/000:05:020
121750430irq/29-eth0_g0_2175-21runrttasks22:44:470
121430ksoftirqd/1121850irq/30-eth0_g0_22:49:301
121430ksoftirqd/1121850irq/30-eth0_g0_00:37:480
104772430chrt121850irq/30-eth0_g0_22:00:240
121850420irq/30-eth0_g0_470-21kworker/1:122:14:441
121850420irq/30-eth0_g0_470-21kworker/1:122:00:131
121420ksoftirqd/14568-21timerandwakeup19:05:201
121420ksoftirqd/1121750irq/29-eth0_g0_21:30:241
590699412cyclictest11695-21ntp_states20:45:181
590699411cyclictest9848-21taskset23:18:541
121750410irq/29-eth0_g0_31ksoftirqd/023:55:150
121750410irq/29-eth0_g0_31ksoftirqd/019:25:200
121750410irq/29-eth0_g0_1932-21runrttasks20:07:480
121410ksoftirqd/1121850irq/30-eth0_g0_23:04:181
121410ksoftirqd/1121850irq/30-eth0_g0_00:12:480
590699401cyclictest316162sleep100:10:301
131842400sleep0121750irq/29-eth0_g0_23:25:510
121850400irq/30-eth0_g0_470-21kworker/1:123:41:271
121850400irq/30-eth0_g0_31ksoftirqd/022:58:530
121750400irq/29-eth0_g0_590599cyclictest23:15:090
121750400irq/29-eth0_g0_24015-21ntpdc21:15:160
121750400irq/29-eth0_g0_13-21kworker/0:121:44:570
121750400irq/29-eth0_g0_121ksoftirqd/120:45:000
121400ksoftirqd/167042sleep000:30:110
121400ksoftirqd/1121850irq/30-eth0_g0_23:20:260
121400ksoftirqd/1121850irq/30-eth0_g0_22:23:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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