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2026-04-21 - 17:37

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 Tue Apr 21, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1031221710sleep1121450irq/29-eth0_g0_11:48:091
756421170sleep1121450irq/29-eth0_g0_11:20:341
1211150ksoftirqd/1121550irq/30-eth0_g0_11:56:341
1211120ksoftirqd/1121550irq/30-eth0_g0_09:34:471
1211110ksoftirqd/1121550irq/30-eth0_g0_08:09:351
92032920sleep0121450irq/29-eth0_g0_11:37:000
113332920sleep0121450irq/29-eth0_g0_11:58:140
121780ksoftirqd/1121550irq/30-eth0_g0_09:20:051
93292690sleep1121450irq/29-eth0_g0_11:38:291
121610ksoftirqd/1121450irq/29-eth0_g0_10:57:150
151262590sleep1121450irq/29-eth0_g0_12:35:171
121530ksoftirqd/1121550irq/30-eth0_g0_12:33:501
121530ksoftirqd/1121550irq/30-eth0_g0_12:33:501
121500ksoftirqd/1121550irq/30-eth0_g0_12:23:281
121500ksoftirqd/1121450irq/29-eth0_g0_10:09:120
121490ksoftirqd/1121550irq/30-eth0_g0_11:04:281
121490ksoftirqd/1121550irq/30-eth0_g0_09:56:061
121490ksoftirqd/1121450irq/29-eth0_g0_09:35:270
121470ksoftirqd/114550-21munin-run07:09:471
121470ksoftirqd/1121550irq/30-eth0_g0_11:16:221
121470ksoftirqd/1121450irq/29-eth0_g0_12:39:390
121460ksoftirqd/1121550irq/30-eth0_g0_10:36:211
121460ksoftirqd/1121550irq/30-eth0_g0_10:13:241
121460ksoftirqd/1121550irq/30-eth0_g0_09:40:581
121460ksoftirqd/1121450irq/29-eth0_g0_09:30:250
85512450sleep1121550irq/30-eth0_g0_11:30:191
14322450sleep0121550irq/30-eth0_g0_10:20:020
121450ksoftirqd/1121550irq/30-eth0_g0_10:55:031
121450ksoftirqd/1121550irq/30-eth0_g0_10:41:491
121450ksoftirqd/1121550irq/30-eth0_g0_09:25:221
121450440irq/29-eth0_g0_14547-21latencyplot07:09:470
121440ksoftirqd/1121450irq/29-eth0_g0_12:31:210
121440ksoftirqd/1121450irq/29-eth0_g0_12:31:210
121440ksoftirqd/1121450irq/29-eth0_g0_12:13:070
121440ksoftirqd/1121450irq/29-eth0_g0_09:52:021
121440ksoftirqd/1121450irq/29-eth0_g0_09:52:021
121550430irq/30-eth0_g0_132572sleep112:17:071
121550430irq/30-eth0_g0_121ksoftirqd/112:06:380
121430ksoftirqd/1121450irq/29-eth0_g0_11:28:061
121430ksoftirqd/1121450irq/29-eth0_g0_09:19:161
121550420irq/30-eth0_g0_1221-21kworker/1:211:50:001
121550420irq/30-eth0_g0_1221-21kworker/1:211:44:411
121550420irq/30-eth0_g0_1221-21kworker/1:210:24:381
121550420irq/30-eth0_g0_1221-21kworker/1:209:11:401
121420ksoftirqd/1121550irq/30-eth0_g0_12:25:361
22372410sleep1121450irq/29-eth0_g0_10:28:251
121550410irq/30-eth0_g0_39962sleep110:45:191
121410ksoftirqd/1121450irq/29-eth0_g0_11:08:271
1455399406cyclictest19659-21latency_hist07:59:481
1455399406cyclictest19659-21latency_hist07:59:481
121450400irq/29-eth0_g0_31ksoftirqd/011:24:080
121450400irq/29-eth0_g0_31ksoftirqd/010:53:110
121450400irq/29-eth0_g0_13-21kworker/0:109:56:100
121450400irq/29-eth0_g0_13-21kworker/0:109:17:000
121550390irq/30-eth0_g0_1221-21kworker/1:212:02:181
121550390irq/30-eth0_g0_1221-21kworker/1:212:02:181
121550390irq/30-eth0_g0_0-21swapper/111:13:181
121450390irq/29-eth0_g0_13-21kworker/0:112:22:490
121450390irq/29-eth0_g0_13-21kworker/0:111:51:220
121450390irq/29-eth0_g0_13-21kworker/0:109:23:220
121390ksoftirqd/1121550irq/30-eth0_g0_11:14:000
121390ksoftirqd/1121550irq/30-eth0_g0_11:03:260
121390ksoftirqd/1121550irq/30-eth0_g0_10:37:490
121390ksoftirqd/1121550irq/30-eth0_g0_10:31:160
121390ksoftirqd/1121450irq/29-eth0_g0_07:38:171
14553993823cyclictest1911-21runrttasks07:33:391
1455399382cyclictest1911-21runrttasks10:00:311
121550380irq/30-eth0_g0_121ksoftirqd/110:32:271
121450380irq/29-eth0_g0_31ksoftirqd/012:15:480
121450380irq/29-eth0_g0_1911-21runrttasks12:04:080
121450380irq/29-eth0_g0_1911-21runrttasks12:04:080
121450380irq/29-eth0_g0_13-21kworker/0:111:19:450
121450380irq/29-eth0_g0_13-21kworker/0:111:09:040
121450380irq/29-eth0_g0_13-21kworker/0:110:00:540
121450380irq/29-eth0_g0_13-21kworker/0:109:40:300
121450380irq/29-eth0_g0_13-21kworker/0:109:25:400
121380ksoftirqd/1121550irq/30-eth0_g0_10:46:210
121380ksoftirqd/1121450irq/29-eth0_g0_08:46:081
1455399371cyclictest26699-21diskmemload10:18:191
1455399371cyclictest0-21swapper/107:24:261
121550370irq/30-eth0_g0_1221-21kworker/1:210:50:061
121550370irq/30-eth0_g0_1221-21kworker/1:210:05:091
121550370irq/30-eth0_g0_0-21swapper/112:06:051
121450370irq/29-eth0_g0_31ksoftirqd/011:25:350
121450370irq/29-eth0_g0_31ksoftirqd/009:10:010
121450370irq/29-eth0_g0_13-21kworker/0:111:41:330
121450370irq/29-eth0_g0_13-21kworker/0:111:31:150
121450370irq/29-eth0_g0_13-21kworker/0:110:19:030
121450370irq/29-eth0_g0_13-21kworker/0:109:50:200
121450370irq/29-eth0_g0_13-21kworker/0:109:50:200
121450370irq/29-eth0_g0_13-21kworker/0:109:48:210
121370ksoftirqd/1121550irq/30-eth0_g0_12:25:560
267022360sleep126706-21latency_hist09:09:471
1455399361cyclictest1911-21runrttasks07:47:471
1455399361cyclictest1911-21runrttasks07:41:351
1455399361cyclictest0-21swapper/108:26:371
121550360irq/30-eth0_g0_1221-21kworker/1:209:48:341
121450360irq/29-eth0_g0_31ksoftirqd/010:40:020
121450360irq/29-eth0_g0_17113-21latency_hist07:34:480
121450360irq/29-eth0_g0_13-21kworker/0:110:26:270
14553993529cyclictest1911-21runrttasks08:32:471
1455399351cyclictest20113-21munin-plugin-st08:04:471
1455399351cyclictest1911-21runrttasks08:51:531
1455399351cyclictest0-21swapper/109:00:351
1455399351cyclictest0-21swapper/107:27:251
1455399351cyclictest0-21swapper/107:10:321
121550350irq/30-eth0_g0_1221-21kworker/1:212:11:451
121450350irq/29-eth0_g0_21638-21munin-run08:19:480
121450350irq/29-eth0_g0_17875-21runrttasks07:42:200
121450350irq/29-eth0_g0_15793-21chrt07:21:340
121450350irq/29-eth0_g0_13-21kworker/0:111:47:050
121450350irq/29-eth0_g0_13-21kworker/0:110:12:500
121450350irq/29-eth0_g0_0-21swapper/009:09:470
1455399342cyclictest1911-21runrttasks08:59:281
1455399341cyclictest0-21swapper/108:42:391
1455399341cyclictest0-21swapper/107:51:281
121550340irq/30-eth0_g0_1911-21runrttasks09:36:011
121450340irq/29-eth0_g0_21136-21latency_hist08:14:480
121450340irq/29-eth0_g0_20601-21runrttasks08:09:360
121450340irq/29-eth0_g0_1911-21runrttasks08:22:021
121450340irq/29-eth0_g0_14678-21runrttasks07:10:220
14553993327cyclictest1911-21runrttasks08:11:271
1455399331cyclictest1911-21runrttasks08:37:381
1455399331cyclictest0-21swapper/108:16:391
121450330irq/29-eth0_g0_24995-21runrttasks08:52:440
121450330irq/29-eth0_g0_24223-21grep08:44:480
121450330irq/29-eth0_g0_16149-21taskset07:24:490
121330ksoftirqd/1121550irq/30-eth0_g0_07:52:230
1455399321cyclictest0-21swapper/107:18:091
121450320irq/29-eth0_g0_24329-21runrttasks08:45:500
121450320irq/29-eth0_g0_22797-21runrttasks08:30:370
121450320irq/29-eth0_g0_22652-21munin-run08:29:470
121450320irq/29-eth0_g0_19985-21taskset08:03:210
121450320irq/29-eth0_g0_19301-21runrttasks07:56:180
121450320irq/29-eth0_g0_19301-21runrttasks07:56:180
121450320irq/29-eth0_g0_17250-21runrttasks07:35:530
121450320irq/29-eth0_g0_15544-21runrttasks07:19:340
121450310irq/29-eth0_g0_18550-21runrttasks07:49:180
121450310irq/29-eth0_g0_0-21swapper/008:59:480
121450300irq/29-eth0_g0_21980-21runrttasks08:22:560
121450300irq/29-eth0_g0_0-21swapper/008:37:260
121450290irq/29-eth0_g0_0-21swapper/009:04:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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