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2026-04-23 - 23:39

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 Thu Apr 23, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2057321570sleep1121450irq/29-eth0_g0_10:58:561
1315121280sleep0121450irq/29-eth0_g0_09:44:530
121860ksoftirqd/1121550irq/30-eth0_g0_09:39:311
235292810sleep0121450irq/29-eth0_g0_11:27:570
184042760sleep1121450irq/29-eth0_g0_10:37:111
229332530sleep1121450irq/29-eth0_g0_11:21:541
160512520sleep1121550irq/30-eth0_g0_10:14:141
121550450irq/30-eth0_g0_121ksoftirqd/108:09:431
153362430sleep1121550irq/30-eth0_g0_10:06:471
121550430irq/30-eth0_g0_303932sleep112:35:221
121550420irq/30-eth0_g0_1221-21kworker/1:212:16:481
121450420irq/29-eth0_g0_13-21kworker/0:110:35:110
29866994129cyclictest0-21swapper/110:45:011
121550410irq/30-eth0_g0_222732sleep111:15:071
121550410irq/30-eth0_g0_1221-21kworker/1:212:24:271
121550410irq/30-eth0_g0_1221-21kworker/1:209:19:371
121550410irq/30-eth0_g0_121ksoftirqd/109:43:491
121550410irq/30-eth0_g0_121ksoftirqd/109:27:041
121450410irq/29-eth0_g0_1911-21runrttasks10:45:210
121450410irq/29-eth0_g0_13-21kworker/0:109:17:190
121410ksoftirqd/1121450irq/29-eth0_g0_11:36:501
121550400irq/30-eth0_g0_1221-21kworker/1:212:32:421
121550400irq/30-eth0_g0_1221-21kworker/1:211:48:011
121550400irq/30-eth0_g0_1221-21kworker/1:211:28:401
121550400irq/30-eth0_g0_1221-21kworker/1:210:18:501
121550400irq/30-eth0_g0_121ksoftirqd/112:08:211
121550400irq/30-eth0_g0_121ksoftirqd/112:02:141
121550400irq/30-eth0_g0_121ksoftirqd/110:20:441
121550400irq/30-eth0_g0_121ksoftirqd/110:20:441
121550400irq/30-eth0_g0_121ksoftirqd/109:48:351
121550400irq/30-eth0_g0_121ksoftirqd/109:13:431
121450400irq/29-eth0_g0_1966-21snmpd07:22:040
121450400irq/29-eth0_g0_1911-21runrttasks11:17:210
121450400irq/29-eth0_g0_13-21kworker/0:112:17:200
121450400irq/29-eth0_g0_13-21kworker/0:112:05:420
121450400irq/29-eth0_g0_13-21kworker/0:111:38:230
121450400irq/29-eth0_g0_13-21kworker/0:110:59:390
121450400irq/29-eth0_g0_13-21kworker/0:110:02:440
121450400irq/29-eth0_g0_13-21kworker/0:109:44:020
121550390irq/30-eth0_g0_31ksoftirqd/012:10:520
121550390irq/30-eth0_g0_1911-21runrttasks07:05:561
121550390irq/30-eth0_g0_121ksoftirqd/111:42:541
121550390irq/30-eth0_g0_121ksoftirqd/110:54:261
121550390irq/30-eth0_g0_121ksoftirqd/110:04:361
121450390irq/29-eth0_g0_21207-21latency_hist11:04:430
121450390irq/29-eth0_g0_1911-21runrttasks11:33:460
121450390irq/29-eth0_g0_1911-21runrttasks11:13:490
121450390irq/29-eth0_g0_13-21kworker/0:112:29:340
121450390irq/29-eth0_g0_13-21kworker/0:111:51:020
121450390irq/29-eth0_g0_13-21kworker/0:111:42:480
121450390irq/29-eth0_g0_13-21kworker/0:110:53:570
121450390irq/29-eth0_g0_13-21kworker/0:110:34:150
121450390irq/29-eth0_g0_13-21kworker/0:110:22:340
121450390irq/29-eth0_g0_13-21kworker/0:110:22:340
121450390irq/29-eth0_g0_13-21kworker/0:109:10:300
121550380irq/30-eth0_g0_1221-21kworker/1:212:25:261
121550380irq/30-eth0_g0_1221-21kworker/1:211:09:521
121550380irq/30-eth0_g0_1221-21kworker/1:210:28:091
121550380irq/30-eth0_g0_1221-21kworker/1:209:57:421
121550380irq/30-eth0_g0_121ksoftirqd/109:51:121
121550380irq/30-eth0_g0_121ksoftirqd/109:19:451
121450380irq/29-eth0_g0_1911-21runrttasks12:36:590
121450380irq/29-eth0_g0_1911-21runrttasks08:33:060
121450380irq/29-eth0_g0_1911-21runrttasks08:25:150
121450380irq/29-eth0_g0_1911-21runrttasks08:24:020
121450380irq/29-eth0_g0_1911-21runrttasks08:13:350
121450380irq/29-eth0_g0_1911-21runrttasks07:31:390
121450380irq/29-eth0_g0_13-21kworker/0:112:02:460
121450380irq/29-eth0_g0_13-21kworker/0:110:43:560
121450380irq/29-eth0_g0_13-21kworker/0:110:27:050
121450380irq/29-eth0_g0_13-21kworker/0:110:18:170
121450380irq/29-eth0_g0_13-21kworker/0:109:59:200
121450380irq/29-eth0_g0_13-21kworker/0:109:51:550
121450380irq/29-eth0_g0_13-21kworker/0:109:31:580
121450380irq/29-eth0_g0_121ksoftirqd/112:10:151
121450380irq/29-eth0_g0_0-21swapper/007:05:540
29865993725cyclictest0-21swapper/008:53:410
121550370irq/30-eth0_g0_1221-21kworker/1:211:32:511
121550370irq/30-eth0_g0_121ksoftirqd/110:42:301
121550370irq/30-eth0_g0_121ksoftirqd/110:33:131
121550370irq/30-eth0_g0_0-21swapper/111:57:261
121450370irq/29-eth0_g0_2982-21latency_hist08:04:430
121450370irq/29-eth0_g0_1966-21snmpd07:17:120
121450370irq/29-eth0_g0_1911-21runrttasks11:20:400
121450370irq/29-eth0_g0_1911-21runrttasks08:42:520
121450370irq/29-eth0_g0_1911-21runrttasks08:08:000
121450370irq/29-eth0_g0_1911-21runrttasks07:56:080
121450370irq/29-eth0_g0_16098-21latency_hist10:14:430
121450370irq/29-eth0_g0_13-21kworker/0:111:57:060
121450370irq/29-eth0_g0_13-21kworker/0:111:44:480
121450370irq/29-eth0_g0_13-21kworker/0:111:06:570
121450370irq/29-eth0_g0_13-21kworker/0:109:20:250
121450370irq/29-eth0_g0_121ksoftirqd/109:33:591
121450370irq/29-eth0_g0_0-21swapper/012:32:590
121450370irq/29-eth0_g0_0-21swapper/010:06:480
112392370sleep0121450irq/29-eth0_g0_09:26:100
259302360sleep1121450irq/29-eth0_g0_11:51:251
121550360irq/30-eth0_g0_0-21swapper/111:01:311
121450360irq/29-eth0_g0_1911-21runrttasks09:01:050
121450360irq/29-eth0_g0_1911-21runrttasks07:25:070
121450360irq/29-eth0_g0_13-21kworker/0:112:23:020
121450360irq/29-eth0_g0_13-21kworker/0:109:36:150
121450360irq/29-eth0_g0_0-21swapper/008:39:430
29866993529cyclictest32631-21runrttasks07:36:471
121450350irq/29-eth0_g0_7380-21runrttasks08:48:130
121450350irq/29-eth0_g0_1911-21runrttasks09:09:150
121450350irq/29-eth0_g0_1911-21runrttasks08:16:140
121450350irq/29-eth0_g0_1911-21runrttasks07:45:300
29866993430cyclictest1911-21runrttasks07:19:561
29866993425cyclictest0-21swapper/108:24:431
121550340irq/30-eth0_g0_1911-21runrttasks07:14:591
121450340irq/29-eth0_g0_5112-21runrttasks08:25:121
121450340irq/29-eth0_g0_1911-21runrttasks08:58:520
121450340irq/29-eth0_g0_1911-21runrttasks07:49:490
121450340irq/29-eth0_g0_0-21swapper/007:40:020
121450340irq/29-eth0_g0_0-21swapper/007:10:060
121450340irq/29-eth0_g0_0-21swapper/007:10:060
321592330sleep10-21swapper/107:32:071
29866993328cyclictest1127-21runrttasks07:46:001
121550330irq/30-eth0_g0_8574-21ls08:59:441
121550330irq/30-eth0_g0_1221-21kworker/1:211:04:451
121550330irq/30-eth0_g0_0-21swapper/108:02:451
121450330irq/29-eth0_g0_429-21sort07:39:430
29866993228cyclictest1911-21runrttasks07:11:581
29866993228cyclictest1911-21runrttasks07:11:581
29866993228cyclictest0-21swapper/108:35:121
29866993226cyclictest86002sleep108:59:511
29866993222cyclictest0-21swapper/107:41:491
121550320irq/30-eth0_g0_0-21swapper/108:12:021
29866993124cyclictest1612-21runrttasks07:50:391
121550310irq/30-eth0_g0_0-21swapper/108:50:301
121550310irq/30-eth0_g0_0-21swapper/108:16:081
29866993024cyclictest9160-21runrttasks09:05:321
29866993024cyclictest7213-21runrttasks08:46:151
29866993024cyclictest6833-21runrttasks08:42:431
29866993024cyclictest31567-21runrttasks07:26:061
29866993024cyclictest2189-21runrttasks07:56:211
121550300irq/30-eth0_g0_0-21swapper/108:33:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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