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2026-05-01 - 21:58

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Fri May 01, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211480ksoftirqd/1121550irq/30-eth0_g0_09:30:050
1211290ksoftirqd/1121550irq/30-eth0_g0_10:44:011
1211100ksoftirqd/1121550irq/30-eth0_g0_12:06:521
121900ksoftirqd/1121550irq/30-eth0_g0_10:48:471
121630ksoftirqd/1121450irq/29-eth0_g0_12:13:401
121570ksoftirqd/1121450irq/29-eth0_g0_10:11:450
246722540sleep0121550irq/30-eth0_g0_09:26:260
121520ksoftirqd/1121550irq/30-eth0_g0_12:33:411
121520ksoftirqd/1121550irq/30-eth0_g0_11:01:171
121490ksoftirqd/1121550irq/30-eth0_g0_10:27:331
121480ksoftirqd/1121550irq/30-eth0_g0_11:19:001
121470ksoftirqd/1121550irq/30-eth0_g0_12:28:351
121470ksoftirqd/1121550irq/30-eth0_g0_10:14:381
121460ksoftirqd/1121550irq/30-eth0_g0_09:20:481
80092450sleep0121550irq/30-eth0_g0_12:02:280
121450ksoftirqd/1121550irq/30-eth0_g0_10:00:211
121550440irq/30-eth0_g0_31ksoftirqd/012:07:440
121550440irq/30-eth0_g0_1221-21kworker/1:212:39:151
121550430irq/30-eth0_g0_1221-21kworker/1:211:22:211
121550430irq/30-eth0_g0_1221-21kworker/1:211:04:271
121550430irq/30-eth0_g0_1221-21kworker/1:209:58:151
121450430irq/29-eth0_g0_1911-21runrttasks07:04:540
121430ksoftirqd/1121550irq/30-eth0_g0_11:13:160
121430ksoftirqd/1121550irq/30-eth0_g0_10:07:281
121430ksoftirqd/1121550irq/30-eth0_g0_09:30:381
121550420irq/30-eth0_g0_1221-21kworker/1:211:56:311
121550420irq/30-eth0_g0_1221-21kworker/1:210:53:181
121450420irq/29-eth0_g0_0-21swapper/009:20:140
121420ksoftirqd/1121550irq/30-eth0_g0_11:29:491
121450410irq/29-eth0_g0_31ksoftirqd/009:51:550
121450410irq/29-eth0_g0_31ksoftirqd/009:51:550
121450410irq/29-eth0_g0_13-21kworker/0:112:24:380
121550400irq/30-eth0_g0_31129-21taskset10:30:111
121450400irq/29-eth0_g0_31ksoftirqd/011:28:530
121450400irq/29-eth0_g0_31ksoftirqd/010:01:020
121450400irq/29-eth0_g0_13-21kworker/0:112:33:590
121450400irq/29-eth0_g0_13-21kworker/0:112:13:530
121450400irq/29-eth0_g0_13-21kworker/0:110:34:390
121450400irq/29-eth0_g0_13-21kworker/0:109:44:280
121450400irq/29-eth0_g0_121ksoftirqd/110:22:380
121450400irq/29-eth0_g0_1078099cyclictest09:40:340
121400ksoftirqd/1121450irq/29-eth0_g0_09:52:311
121400ksoftirqd/1121450irq/29-eth0_g0_09:52:311
121550390irq/30-eth0_g0_1221-21kworker/1:211:13:141
121550390irq/30-eth0_g0_1221-21kworker/1:210:21:101
121550390irq/30-eth0_g0_1221-21kworker/1:210:13:091
121550390irq/30-eth0_g0_121ksoftirqd/109:25:281
121550390irq/30-eth0_g0_10581-21sshd07:07:151
121450390irq/29-eth0_g0_327272sleep010:46:090
121450390irq/29-eth0_g0_31ksoftirqd/010:51:240
121450390irq/29-eth0_g0_13-21kworker/0:112:19:430
121450390irq/29-eth0_g0_13-21kworker/0:110:31:370
121450390irq/29-eth0_g0_121ksoftirqd/111:54:250
121390ksoftirqd/1121550irq/30-eth0_g0_09:12:270
121390ksoftirqd/1121450irq/29-eth0_g0_07:38:161
1078199391cyclictest0-21swapper/108:23:021
1078199391cyclictest0-21swapper/108:23:021
121550380irq/30-eth0_g0_1221-21kworker/1:212:15:151
121550380irq/30-eth0_g0_121ksoftirqd/109:15:061
121550380irq/30-eth0_g0_0-21swapper/110:57:131
121450380irq/29-eth0_g0_31ksoftirqd/010:05:450
121450380irq/29-eth0_g0_31ksoftirqd/007:59:250
121450380irq/29-eth0_g0_1911-21runrttasks11:21:050
121450380irq/29-eth0_g0_13-21kworker/0:110:56:010
121450380irq/29-eth0_g0_13-21kworker/0:110:16:050
121450380irq/29-eth0_g0_13-21kworker/0:109:36:070
121450380irq/29-eth0_g0_0-21swapper/011:03:230
121380ksoftirqd/1121550irq/30-eth0_g0_12:37:220
121380ksoftirqd/1121450irq/29-eth0_g0_09:06:301
121550370irq/30-eth0_g0_20874-21chrt08:49:221
121550370irq/30-eth0_g0_1221-21kworker/1:211:46:291
121550370irq/30-eth0_g0_1221-21kworker/1:210:35:581
121550370irq/30-eth0_g0_1221-21kworker/1:209:48:211
121550370irq/30-eth0_g0_1221-21kworker/1:209:12:311
121450370irq/29-eth0_g0_1911-21runrttasks09:54:450
121450370irq/29-eth0_g0_13-21kworker/0:112:16:010
121450370irq/29-eth0_g0_13-21kworker/0:111:43:270
121450370irq/29-eth0_g0_13-21kworker/0:111:31:030
121450370irq/29-eth0_g0_13-21kworker/0:111:14:470
121450370irq/29-eth0_g0_13-21kworker/0:110:40:120
121450370irq/29-eth0_g0_1078099cyclictest11:08:560
121450370irq/29-eth0_g0_1078099cyclictest09:19:250
1078199377cyclictest121550irq/30-eth0_g0_11:49:291
1078199372cyclictest18902-21sed08:29:251
121550360irq/30-eth0_g0_1221-21kworker/1:211:59:451
121550360irq/30-eth0_g0_1221-21kworker/1:211:35:381
121550360irq/30-eth0_g0_1221-21kworker/1:211:28:171
121450360irq/29-eth0_g0_1911-21runrttasks10:24:520
121450360irq/29-eth0_g0_1911-21runrttasks08:56:330
121450360irq/29-eth0_g0_1911-21runrttasks08:37:500
121450360irq/29-eth0_g0_1911-21runrttasks07:35:140
121450360irq/29-eth0_g0_1911-21runrttasks07:24:520
121450360irq/29-eth0_g0_13-21kworker/0:111:55:190
121450360irq/29-eth0_g0_1221-21kworker/1:212:19:321
1078199361cyclictest6160-21latency_hist11:44:251
121550350irq/30-eth0_g0_1911-21runrttasks08:08:180
121550350irq/30-eth0_g0_1221-21kworker/1:209:37:321
121450350irq/29-eth0_g0_1911-21runrttasks11:37:120
121450350irq/29-eth0_g0_1911-21runrttasks09:03:550
121450350irq/29-eth0_g0_1911-21runrttasks08:26:210
121450350irq/29-eth0_g0_1911-21runrttasks08:02:420
121450350irq/29-eth0_g0_1911-21runrttasks07:45:370
121450350irq/29-eth0_g0_13-21kworker/0:111:46:150
121450350irq/29-eth0_g0_1078099cyclictest07:17:070
121350ksoftirqd/1121550irq/30-eth0_g0_09:42:121
1078199352cyclictest14826-21munin-run07:49:251
1078199351cyclictest200182sleep108:40:151
1078199351cyclictest11825-21cat07:19:251
1078199351cyclictest0-21swapper/107:55:101
1078199351cyclictest0-21swapper/107:42:271
1078199351cyclictest0-21swapper/107:26:031
121450340irq/29-eth0_g0_1911-21runrttasks09:07:250
121450340irq/29-eth0_g0_1911-21runrttasks08:48:250
121450340irq/29-eth0_g0_1911-21runrttasks08:30:360
121450340irq/29-eth0_g0_1911-21runrttasks07:43:470
121450340irq/29-eth0_g0_1911-21runrttasks07:13:140
1078199341cyclictest191772sleep108:32:151
1078199341cyclictest0-21swapper/108:10:131
1078199340cyclictest0-21swapper/108:58:581
121450330irq/29-eth0_g0_20378-21munin-run08:44:250
121450330irq/29-eth0_g0_1911-21runrttasks08:50:400
121450330irq/29-eth0_g0_1911-21runrttasks08:20:020
121450330irq/29-eth0_g0_1911-21runrttasks08:20:020
121450330irq/29-eth0_g0_1911-21runrttasks07:30:150
121450330irq/29-eth0_g0_17663-21sshd08:17:150
121450330irq/29-eth0_g0_17663-21sshd08:17:150
121450330irq/29-eth0_g0_15389-21grep07:54:260
1078199331cyclictest16345-21chrt08:04:251
1078199331cyclictest0-21swapper/108:49:381
1078199330cyclictest0-21swapper/109:01:221
121450320irq/29-eth0_g0_1911-21runrttasks08:14:010
121450320irq/29-eth0_g0_1911-21runrttasks07:22:200
121320ksoftirqd/1121450irq/29-eth0_g0_07:33:381
10781993116cyclictest1972-21lldpd08:18:321
10781993116cyclictest1972-21lldpd08:18:321
1078199311cyclictest0-21swapper/108:38:351
1078199311cyclictest0-21swapper/108:09:201
1078199310cyclictest0-21swapper/107:19:541
1078199301cyclictest0-21swapper/107:52:321
121550260irq/30-eth0_g0_0-21swapper/107:09:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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