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2025-12-08 - 15:35

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Mon Dec 08, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
574421660sleep1121650irq/29-eth0_g0_11:24:011
319602930sleep1121650irq/29-eth0_g0_10:22:211
121790ksoftirqd/1121750irq/30-eth0_g0_07:49:051
121690ksoftirqd/158732chrt11:24:540
123752520sleep1121750irq/30-eth0_g0_12:29:521
121520ksoftirqd/1121750irq/30-eth0_g0_10:10:131
121510ksoftirqd/1121750irq/30-eth0_g0_11:28:391
326182490sleep0121650irq/29-eth0_g0_10:29:080
121490ksoftirqd/1121750irq/30-eth0_g0_10:26:101
101512490sleep0121650irq/29-eth0_g0_12:07:240
121480ksoftirqd/1121650irq/29-eth0_g0_09:57:080
121450ksoftirqd/1121750irq/30-eth0_g0_10:48:001
121750440irq/30-eth0_g0_28139-21munin-run09:44:541
121440ksoftirqd/1121750irq/30-eth0_g0_09:50:581
121750430irq/30-eth0_g0_1219-21kworker/1:210:15:001
121750430irq/30-eth0_g0_121ksoftirqd/109:26:551
121650430irq/29-eth0_g0_321462sleep010:24:330
121650430irq/29-eth0_g0_1966-21runrttasks07:05:590
121650420irq/29-eth0_g0_13-21kworker/0:110:44:040
121650420irq/29-eth0_g0_121ksoftirqd/112:33:160
121750410irq/30-eth0_g0_121ksoftirqd/112:21:090
121750410irq/30-eth0_g0_121ksoftirqd/112:09:191
121750410irq/30-eth0_g0_121ksoftirqd/109:47:021
121650410irq/29-eth0_g0_31ksoftirqd/011:35:380
121650410irq/29-eth0_g0_13-21kworker/0:109:40:140
121650410irq/29-eth0_g0_13-21kworker/0:109:30:050
121650410irq/29-eth0_g0_121ksoftirqd/109:10:120
121410ksoftirqd/1121750irq/30-eth0_g0_09:47:220
1250999401cyclictest20189-21sshd08:25:291
121750400irq/30-eth0_g0_31ksoftirqd/011:25:340
121750400irq/30-eth0_g0_1219-21kworker/1:212:18:291
121750400irq/30-eth0_g0_1219-21kworker/1:211:06:281
121750400irq/30-eth0_g0_121ksoftirqd/111:12:111
121750400irq/30-eth0_g0_121ksoftirqd/111:12:111
121750400irq/30-eth0_g0_121ksoftirqd/110:13:070
121750400irq/30-eth0_g0_121ksoftirqd/108:15:511
121650400irq/29-eth0_g0_1966-21runrttasks08:17:560
121650400irq/29-eth0_g0_13-21kworker/0:112:10:080
121650400irq/29-eth0_g0_13-21kworker/0:112:10:080
121650400irq/29-eth0_g0_13-21kworker/0:111:51:450
121650400irq/29-eth0_g0_13-21kworker/0:111:14:500
121650400irq/29-eth0_g0_13-21kworker/0:111:14:500
121650400irq/29-eth0_g0_13-21kworker/0:110:38:350
121650400irq/29-eth0_g0_13-21kworker/0:110:09:020
121650400irq/29-eth0_g0_13-21kworker/0:110:01:460
121650400irq/29-eth0_g0_13-21kworker/0:109:39:280
121650400irq/29-eth0_g0_121ksoftirqd/110:56:510
1250999391cyclictest2027-21lldpd09:01:011
1250999391cyclictest2027-21lldpd09:01:011
121750390irq/30-eth0_g0_1219-21kworker/1:211:53:491
121750390irq/30-eth0_g0_1219-21kworker/1:210:55:491
121750390irq/30-eth0_g0_1219-21kworker/1:210:52:081
121750390irq/30-eth0_g0_1219-21kworker/1:210:36:161
121750390irq/30-eth0_g0_1219-21kworker/1:209:12:121
121750390irq/30-eth0_g0_121ksoftirqd/110:42:551
121750390irq/30-eth0_g0_121ksoftirqd/110:32:041
121750390irq/30-eth0_g0_121ksoftirqd/110:32:041
121750390irq/30-eth0_g0_121ksoftirqd/109:57:261
121750390irq/30-eth0_g0_0-21swapper/112:33:021
121650390irq/29-eth0_g0_13-21kworker/0:112:38:080
121650390irq/29-eth0_g0_13-21kworker/0:112:25:430
121650390irq/29-eth0_g0_13-21kworker/0:112:18:030
121650390irq/29-eth0_g0_13-21kworker/0:111:44:040
121650390irq/29-eth0_g0_13-21kworker/0:111:01:550
121650390irq/29-eth0_g0_13-21kworker/0:109:51:120
121650390irq/29-eth0_g0_121ksoftirqd/110:31:150
121650390irq/29-eth0_g0_121ksoftirqd/110:31:150
121390ksoftirqd/1121650irq/29-eth0_g0_11:18:531
121390ksoftirqd/1121650irq/29-eth0_g0_10:00:471
121390ksoftirqd/1121650irq/29-eth0_g0_09:31:271
96432380sleep0121650irq/29-eth0_g0_12:02:220
1250999381cyclictest18565-21wc08:09:551
1250999381cyclictest0-21swapper/112:14:201
1250999381cyclictest0-21swapper/112:14:201
121750380irq/30-eth0_g0_1219-21kworker/1:212:23:431
121750380irq/30-eth0_g0_1219-21kworker/1:211:55:371
121750380irq/30-eth0_g0_1219-21kworker/1:211:40:301
121750380irq/30-eth0_g0_1219-21kworker/1:209:39:351
121750380irq/30-eth0_g0_121ksoftirqd/112:00:581
121750380irq/30-eth0_g0_0-21swapper/109:22:151
121650380irq/29-eth0_g0_7972-21taskset11:45:340
121650380irq/29-eth0_g0_7972-21taskset11:45:340
121650380irq/29-eth0_g0_31ksoftirqd/011:15:490
121650380irq/29-eth0_g0_26376-21seq09:26:560
121650380irq/29-eth0_g0_1966-21runrttasks08:46:540
121650380irq/29-eth0_g0_1966-21runrttasks08:22:470
121650380irq/29-eth0_g0_1966-21runrttasks07:38:560
121650380irq/29-eth0_g0_13-21kworker/0:111:32:140
121650380irq/29-eth0_g0_13-21kworker/0:111:05:550
121650380irq/29-eth0_g0_13-21kworker/0:109:16:510
121650380irq/29-eth0_g0_0-21swapper/007:54:550
121380ksoftirqd/1121650irq/29-eth0_g0_10:45:480
121380ksoftirqd/1121650irq/29-eth0_g0_09:06:331
121380ksoftirqd/1121650irq/29-eth0_g0_08:46:031
121380ksoftirqd/1121650irq/29-eth0_g0_08:33:431
1250999371cyclictest30412-21chrt10:06:591
1250999371cyclictest23649-21cat08:59:551
121750370irq/30-eth0_g0_12505-21munin-run07:09:541
121750370irq/30-eth0_g0_1219-21kworker/1:211:48:531
121750370irq/30-eth0_g0_1219-21kworker/1:211:48:531
121750370irq/30-eth0_g0_1219-21kworker/1:211:00:031
121750370irq/30-eth0_g0_121ksoftirqd/111:36:231
121650370irq/29-eth0_g0_13-21kworker/0:110:51:210
121650370irq/29-eth0_g0_13-21kworker/0:110:16:280
121650370irq/29-eth0_g0_121ksoftirqd/112:37:141
121650370irq/29-eth0_g0_0-21swapper/009:21:440
1250999361cyclictest1966-21runrttasks07:26:241
1250999361cyclictest16044-21cat07:44:541
1250999361cyclictest0-21swapper/107:51:231
121750360irq/30-eth0_g0_1219-21kworker/1:211:29:561
121750360irq/30-eth0_g0_121ksoftirqd/109:19:001
121650360irq/29-eth0_g0_1966-21runrttasks09:07:580
121650360irq/29-eth0_g0_1966-21runrttasks08:50:470
121650360irq/29-eth0_g0_1966-21runrttasks08:44:200
121650360irq/29-eth0_g0_1966-21runrttasks08:35:100
121650360irq/29-eth0_g0_1966-21runrttasks08:30:300
121650360irq/29-eth0_g0_1966-21runrttasks08:26:260
121650360irq/29-eth0_g0_1966-21runrttasks08:08:500
121650360irq/29-eth0_g0_1966-21runrttasks07:45:180
121650360irq/29-eth0_g0_13-21kworker/0:111:56:210
121650350irq/29-eth0_g0_1966-21runrttasks08:55:160
121650350irq/29-eth0_g0_1966-21runrttasks08:14:450
121650350irq/29-eth0_g0_1966-21runrttasks08:00:330
121650350irq/29-eth0_g0_1966-21runrttasks07:58:480
1250999342cyclictest0-21swapper/107:19:411
121650340irq/29-eth0_g0_21323-21runrttasks08:36:591
121650340irq/29-eth0_g0_1966-21runrttasks09:00:040
121650340irq/29-eth0_g0_1966-21runrttasks09:00:040
1250999331cyclictest216612sleep108:40:031
1250999331cyclictest0-21swapper/107:30:461
1250999331cyclictest0-21swapper/107:24:101
121750330irq/30-eth0_g0_1966-21runrttasks07:10:021
121650330irq/29-eth0_g0_16037-21latency_hist07:44:550
121650330irq/29-eth0_g0_0-21swapper/007:21:210
121650330irq/29-eth0_g0_0-21swapper/007:19:560
1250999321cyclictest0-21swapper/108:52:401
1250999321cyclictest0-21swapper/108:23:271
121750320irq/30-eth0_g0_0-21swapper/108:11:571
121750320irq/30-eth0_g0_0-21swapper/108:04:031
121650320irq/29-eth0_g0_1966-21runrttasks07:33:180
121650320irq/29-eth0_g0_0-21swapper/007:28:110
121750310irq/30-eth0_g0_0-21swapper/107:37:591
121650310irq/29-eth0_g0_17326-21runrttasks07:57:151
121650310irq/29-eth0_g0_0-21swapper/007:10:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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