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2026-04-22 - 15:38

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 Wed Apr 22, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1752721420sleep1121550irq/30-eth0_g0_11:25:061
1417121270sleep1121450irq/29-eth0_g0_10:52:181
1417121270sleep1121450irq/29-eth0_g0_10:52:181
121860ksoftirqd/1121450irq/29-eth0_g0_08:51:450
121750ksoftirqd/1121550irq/30-eth0_g0_12:20:271
121720ksoftirqd/1121550irq/30-eth0_g0_09:37:511
241092620sleep0121550irq/30-eth0_g0_12:30:110
121530ksoftirqd/1121550irq/30-eth0_g0_12:33:241
121470ksoftirqd/1121550irq/30-eth0_g0_12:10:301
121460ksoftirqd/1121550irq/30-eth0_g0_10:06:511
121460ksoftirqd/1121550irq/30-eth0_g0_09:54:551
121460ksoftirqd/1121550irq/30-eth0_g0_09:48:131
121460ksoftirqd/1121550irq/30-eth0_g0_09:48:131
121460ksoftirqd/1121450irq/29-eth0_g0_10:32:071
121450450irq/29-eth0_g0_1911-21runrttasks10:00:210
121450ksoftirqd/1121450irq/29-eth0_g0_09:26:320
121450ksoftirqd/1121450irq/29-eth0_g0_07:56:411
121550440irq/30-eth0_g0_1221-21kworker/1:210:46:451
121440ksoftirqd/1121550irq/30-eth0_g0_10:46:370
121440ksoftirqd/1121450irq/29-eth0_g0_10:39:501
121440ksoftirqd/1121450irq/29-eth0_g0_09:07:411
121440ksoftirqd/1121450irq/29-eth0_g0_09:07:411
121550430irq/30-eth0_g0_1221-21kworker/1:209:54:051
121550430irq/30-eth0_g0_1221-21kworker/1:209:24:441
121550430irq/30-eth0_g0_1221-21kworker/1:209:15:361
121450430irq/29-eth0_g0_1911-21runrttasks07:08:320
121430ksoftirqd/1121550irq/30-eth0_g0_09:42:561
121430ksoftirqd/1121450irq/29-eth0_g0_11:22:071
121430ksoftirqd/1121450irq/29-eth0_g0_09:51:510
24008994227cyclictest1911-21runrttasks12:02:531
187242420sleep1121450irq/29-eth0_g0_11:37:201
187242420sleep1121450irq/29-eth0_g0_11:37:201
121450420irq/29-eth0_g0_31ksoftirqd/010:53:030
121450420irq/29-eth0_g0_31ksoftirqd/010:53:030
121450410irq/29-eth0_g0_31ksoftirqd/009:30:010
121450410irq/29-eth0_g0_31ksoftirqd/009:30:010
121450410irq/29-eth0_g0_13-21kworker/0:112:29:130
121450410irq/29-eth0_g0_13-21kworker/0:111:39:480
121450410irq/29-eth0_g0_13-21kworker/0:111:11:100
121410ksoftirqd/1121450irq/29-eth0_g0_12:06:391
121550400irq/30-eth0_g0_121ksoftirqd/109:34:411
121550400irq/30-eth0_g0_121ksoftirqd/109:34:411
121450400irq/29-eth0_g0_41072sleep009:13:040
121450400irq/29-eth0_g0_153792sleep011:04:320
121450400irq/29-eth0_g0_13-21kworker/0:110:18:260
121450400irq/29-eth0_g0_121ksoftirqd/110:04:560
121400ksoftirqd/1121550irq/30-eth0_g0_11:50:270
121400ksoftirqd/1121550irq/30-eth0_g0_10:44:060
121400ksoftirqd/1121550irq/30-eth0_g0_10:24:260
121400ksoftirqd/1121550irq/30-eth0_g0_08:14:290
121550390irq/30-eth0_g0_1221-21kworker/1:210:36:061
121550390irq/30-eth0_g0_121ksoftirqd/110:24:131
121450390irq/29-eth0_g0_2400799cyclictest09:48:210
121450390irq/29-eth0_g0_2400799cyclictest09:48:210
121450390irq/29-eth0_g0_13-21kworker/0:111:18:000
121450390irq/29-eth0_g0_13-21kworker/0:110:58:520
121450390irq/29-eth0_g0_13-21kworker/0:110:33:110
121450390irq/29-eth0_g0_13-21kworker/0:110:25:420
121450390irq/29-eth0_g0_13-21kworker/0:110:11:210
121390ksoftirqd/1121550irq/30-eth0_g0_12:11:440
121390ksoftirqd/1121550irq/30-eth0_g0_11:38:290
121390ksoftirqd/1121550irq/30-eth0_g0_11:38:290
121390ksoftirqd/1121550irq/30-eth0_g0_11:32:590
121390ksoftirqd/1121550irq/30-eth0_g0_11:06:270
121390ksoftirqd/1121550irq/30-eth0_g0_10:37:010
121390ksoftirqd/1121550irq/30-eth0_g0_09:42:040
121390ksoftirqd/1121550irq/30-eth0_g0_09:23:160
121390ksoftirqd/1121550irq/30-eth0_g0_07:33:260
121390ksoftirqd/1121450irq/29-eth0_g0_11:14:261
24008993810cyclictest0-21swapper/112:17:521
121550380irq/30-eth0_g0_1221-21kworker/1:212:24:521
121550380irq/30-eth0_g0_1221-21kworker/1:211:59:011
121550380irq/30-eth0_g0_1221-21kworker/1:210:15:581
121550380irq/30-eth0_g0_121ksoftirqd/110:10:161
121550380irq/30-eth0_g0_0-21swapper/111:50:331
121550380irq/30-eth0_g0_0-21swapper/110:01:311
121550380irq/30-eth0_g0_0-21swapper/109:10:391
121450380irq/29-eth0_g0_226042sleep012:15:210
121450380irq/29-eth0_g0_1911-21runrttasks11:29:130
121450380irq/29-eth0_g0_1911-21runrttasks08:35:060
121450380irq/29-eth0_g0_1911-21runrttasks08:28:390
121450380irq/29-eth0_g0_13-21kworker/0:112:35:200
121450380irq/29-eth0_g0_13-21kworker/0:109:55:490
121380ksoftirqd/1121550irq/30-eth0_g0_11:45:170
121380ksoftirqd/1121550irq/30-eth0_g0_08:56:130
121550370irq/30-eth0_g0_1221-21kworker/1:211:30:071
121550370irq/30-eth0_g0_1221-21kworker/1:211:16:131
121550370irq/30-eth0_g0_121ksoftirqd/110:57:161
121550370irq/30-eth0_g0_11700-21seq10:28:021
121450370irq/29-eth0_g0_216172sleep012:05:360
121450370irq/29-eth0_g0_1911-21runrttasks08:00:160
121450370irq/29-eth0_g0_13-21kworker/0:112:21:290
121450370irq/29-eth0_g0_13-21kworker/0:111:58:140
121450370irq/29-eth0_g0_13-21kworker/0:109:36:390
121370ksoftirqd/1121550irq/30-eth0_g0_11:21:190
121370ksoftirqd/1121450irq/29-eth0_g0_11:42:571
2400899362cyclictest25005-21munin-run12:39:451
2400899362cyclictest1271-21cut08:44:461
121550360irq/30-eth0_g0_1221-21kworker/1:211:47:291
121550360irq/30-eth0_g0_1221-21kworker/1:211:07:271
121450360irq/29-eth0_g0_23601-21runrttasks07:05:111
121450360irq/29-eth0_g0_1911-21runrttasks09:07:070
121450360irq/29-eth0_g0_1911-21runrttasks09:07:070
121450360irq/29-eth0_g0_1911-21runrttasks08:59:580
121450360irq/29-eth0_g0_1911-21runrttasks08:48:260
121450360irq/29-eth0_g0_1911-21runrttasks08:30:360
121450360irq/29-eth0_g0_1911-21runrttasks08:21:020
121450360irq/29-eth0_g0_1911-21runrttasks07:59:110
121450360irq/29-eth0_g0_1911-21runrttasks07:50:080
121450360irq/29-eth0_g0_1911-21runrttasks07:50:080
2400899351cyclictest1966-21snmpd09:03:181
2400899351cyclictest0-21swapper/108:39:171
2400899351cyclictest0-21swapper/108:09:341
2400899351cyclictest0-21swapper/107:20:271
121450350irq/29-eth0_g0_31ksoftirqd/012:00:520
121450350irq/29-eth0_g0_31ksoftirqd/009:15:350
121450350irq/29-eth0_g0_1911-21runrttasks08:41:120
121450350irq/29-eth0_g0_1911-21runrttasks07:38:350
121450350irq/29-eth0_g0_1911-21runrttasks07:23:000
121450350irq/29-eth0_g0_1911-21runrttasks07:10:210
2400899341cyclictest3746-21diskmemload11:00:021
2400899341cyclictest3746-21diskmemload09:26:521
2400899341cyclictest0-21swapper/108:57:061
2400899341cyclictest0-21swapper/108:12:371
121450340irq/29-eth0_g0_1911-21runrttasks08:18:460
121450340irq/29-eth0_g0_1911-21runrttasks08:17:071
121450340irq/29-eth0_g0_1911-21runrttasks08:07:130
121450340irq/29-eth0_g0_1911-21runrttasks07:43:480
2400899331cyclictest32650-21latency_hist08:34:461
2400899331cyclictest315162sleep108:23:451
2400899331cyclictest275532sleep107:44:451
2400899331cyclictest245112sleep107:14:451
2400899331cyclictest0-21swapper/108:00:161
2400899331cyclictest0-21swapper/107:32:591
121450330irq/29-eth0_g0_28535-21runrttasks07:54:261
121450330irq/29-eth0_g0_28535-21runrttasks07:54:261
121450330irq/29-eth0_g0_25018-21munin-run07:19:450
2400899321cyclictest0-21swapper/108:52:491
2400899321cyclictest0-21swapper/107:26:111
2400899321cyclictest0-21swapper/107:19:401
121450320irq/29-eth0_g0_1911-21runrttasks07:28:420
121450320irq/29-eth0_g0_1658-21runrttasks08:49:151
121320ksoftirqd/126808-21taskset07:37:001
2400899311cyclictest0-21swapper/108:26:381
2400899311cyclictest0-21swapper/107:47:291
121450310irq/29-eth0_g0_1911-21runrttasks07:47:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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