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2026-05-18 - 02:25

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 all highest latencies:
System rack3slot5s.osadl.org (updated Mon May 18, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121700ksoftirqd/1121450irq/29-eth0_g0_00:07:241
58432510sleep0121550irq/30-eth0_g0_21:59:510
121500ksoftirqd/1121450irq/29-eth0_g0_00:19:520
121490ksoftirqd/1121550irq/30-eth0_g0_22:47:381
121460ksoftirqd/1121550irq/30-eth0_g0_21:44:331
121450450irq/29-eth0_g0_13-21kworker/0:100:35:510
121450ksoftirqd/1121550irq/30-eth0_g0_23:05:251
121450ksoftirqd/1121550irq/30-eth0_g0_22:05:451
121450440irq/29-eth0_g0_31ksoftirqd/023:30:310
121450440irq/29-eth0_g0_13-21kworker/0:121:23:090
121440ksoftirqd/1121450irq/29-eth0_g0_21:32:391
2091999432cyclictest21440-21latency_hist00:33:471
121450430irq/29-eth0_g0_31ksoftirqd/023:44:230
121550420irq/30-eth0_g0_2091999cyclictest22:31:031
121450420irq/29-eth0_g0_572-21diskmemload00:18:480
121450420irq/29-eth0_g0_13-21kworker/0:123:01:030
121450420irq/29-eth0_g0_13-21kworker/0:122:38:570
121450420irq/29-eth0_g0_13-21kworker/0:121:26:260
121450420irq/29-eth0_g0_13-21kworker/0:121:14:450
121420ksoftirqd/1121450irq/29-eth0_g0_21:22:071
121550410irq/30-eth0_g0_31ksoftirqd/022:26:370
121550410irq/30-eth0_g0_31ksoftirqd/022:26:370
121550410irq/30-eth0_g0_1221-21kworker/1:222:16:501
121550410irq/30-eth0_g0_1221-21kworker/1:222:10:081
121550410irq/30-eth0_g0_121ksoftirqd/121:24:071
121550410irq/30-eth0_g0_121ksoftirqd/100:11:201
121550410irq/30-eth0_g0_0-21swapper/122:57:241
121450410irq/29-eth0_g0_1911-21runrttasks20:12:320
121450410irq/29-eth0_g0_13-21kworker/0:123:07:100
121450410irq/29-eth0_g0_13-21kworker/0:100:29:030
121450410irq/29-eth0_g0_103942sleep022:44:500
2091999401cyclictest1663-21grep21:18:481
121550400irq/30-eth0_g0_31ksoftirqd/021:11:550
121550400irq/30-eth0_g0_1221-21kworker/1:200:19:201
121550400irq/30-eth0_g0_121ksoftirqd/123:43:351
121550400irq/30-eth0_g0_0-21swapper/123:02:041
121450400irq/29-eth0_g0_31ksoftirqd/021:47:050
121450400irq/29-eth0_g0_1911-21runrttasks21:39:410
121450400irq/29-eth0_g0_13-21kworker/0:123:55:530
121450400irq/29-eth0_g0_13-21kworker/0:123:38:170
121450400irq/29-eth0_g0_13-21kworker/0:122:34:300
121450400irq/29-eth0_g0_13-21kworker/0:122:09:200
121450400irq/29-eth0_g0_13-21kworker/0:122:04:090
121450400irq/29-eth0_g0_13-21kworker/0:121:49:160
121450400irq/29-eth0_g0_13-21kworker/0:121:34:320
121550390irq/30-eth0_g0_1221-21kworker/1:223:44:021
121550390irq/30-eth0_g0_121ksoftirqd/122:36:571
121550390irq/30-eth0_g0_121ksoftirqd/121:39:541
121550390irq/30-eth0_g0_0-21swapper/123:22:401
121550390irq/30-eth0_g0_0-21swapper/121:38:151
121550390irq/30-eth0_g0_0-21swapper/121:10:401
121450390irq/29-eth0_g0_31ksoftirqd/023:13:160
121450390irq/29-eth0_g0_31ksoftirqd/022:20:270
121450390irq/29-eth0_g0_31ksoftirqd/022:18:130
121450390irq/29-eth0_g0_20914-21latencyplot19:08:470
121450390irq/29-eth0_g0_19098-21taskset00:10:590
121450390irq/29-eth0_g0_13-21kworker/0:123:16:150
121450390irq/29-eth0_g0_13-21kworker/0:122:56:180
121450390irq/29-eth0_g0_13-21kworker/0:121:29:110
121450390irq/29-eth0_g0_121ksoftirqd/123:11:461
121390ksoftirqd/1121450irq/29-eth0_g0_19:42:251
121550380irq/30-eth0_g0_1221-21kworker/1:223:25:201
121550380irq/30-eth0_g0_121ksoftirqd/123:33:081
121450380irq/29-eth0_g0_572-21diskmemload00:06:350
121450380irq/29-eth0_g0_14520-21taskset23:25:450
121450380irq/29-eth0_g0_131kworker/0:122:33:100
121450380irq/29-eth0_g0_121ksoftirqd/100:38:461
121380ksoftirqd/1121450irq/29-eth0_g0_23:15:151
121380ksoftirqd/1121450irq/29-eth0_g0_22:24:441
121380ksoftirqd/1121450irq/29-eth0_g0_22:24:441
121380ksoftirqd/1121450irq/29-eth0_g0_21:05:471
121380ksoftirqd/1121450irq/29-eth0_g0_19:35:471
2091999372cyclictest30508-21latency_hist20:43:471
2091999371cyclictest0-21swapper/119:26:121
121550370irq/30-eth0_g0_1221-21kworker/1:222:39:381
121550370irq/30-eth0_g0_1221-21kworker/1:200:15:331
121550370irq/30-eth0_g0_121ksoftirqd/121:54:301
121550370irq/30-eth0_g0_121ksoftirqd/121:49:381
121450370irq/29-eth0_g0_31ksoftirqd/023:52:120
121450370irq/29-eth0_g0_20784-21runrttasks19:07:221
121450370irq/29-eth0_g0_13-21kworker/0:123:41:340
121450370irq/29-eth0_g0_13-21kworker/0:123:19:300
121450370irq/29-eth0_g0_13-21kworker/0:122:51:520
121450370irq/29-eth0_g0_13-21kworker/0:121:54:150
121450370irq/29-eth0_g0_13-21kworker/0:100:23:510
121450370irq/29-eth0_g0_13-21kworker/0:100:23:510
121370ksoftirqd/1121450irq/29-eth0_g0_23:59:011
121370ksoftirqd/1121450irq/29-eth0_g0_23:59:011
121550360irq/30-eth0_g0_1221-21kworker/1:223:57:461
121550360irq/30-eth0_g0_1221-21kworker/1:223:49:041
121550360irq/30-eth0_g0_1221-21kworker/1:223:33:521
121550360irq/30-eth0_g0_121ksoftirqd/122:51:171
121550360irq/30-eth0_g0_121ksoftirqd/100:26:341
121550360irq/30-eth0_g0_121ksoftirqd/100:26:341
121450360irq/29-eth0_g0_1911-21runrttasks20:33:370
121450360irq/29-eth0_g0_1911-21runrttasks19:39:390
121450360irq/29-eth0_g0_13-21kworker/0:123:58:560
121450360irq/29-eth0_g0_13-21kworker/0:123:58:560
121450360irq/29-eth0_g0_121ksoftirqd/122:20:551
121450360irq/29-eth0_g0_0-21swapper/020:41:520
2091999351cyclictest264612sleep120:03:421
2091999351cyclictest0-21swapper/120:54:201
2091999351cyclictest0-21swapper/119:18:121
121450350irq/29-eth0_g0_1911-21runrttasks20:05:350
2091999341cyclictest1911-21runrttasks19:13:141
2091999341cyclictest0-21swapper/120:46:331
2091999341cyclictest0-21swapper/120:03:561
2091999341cyclictest0-21swapper/119:21:441
2091999341cyclictest0-21swapper/119:21:441
121550340irq/30-eth0_g0_0-21swapper/121:59:051
121450340irq/29-eth0_g0_30002-21/usr/sbin/munin20:38:470
121450340irq/29-eth0_g0_25466-21wc19:53:470
121450340irq/29-eth0_g0_1966-21snmpd19:17:420
121450340irq/29-eth0_g0_1911-21runrttasks21:08:060
2091999331cyclictest0-21swapper/120:14:191
2091999331cyclictest0-21swapper/119:56:391
2091999331cyclictest0-21swapper/119:31:381
121450330irq/29-eth0_g0_26510-21latency_hist20:03:480
121450330irq/29-eth0_g0_25038-21runrttasks19:48:551
121450330irq/29-eth0_g0_23103-21runrttasks19:29:520
121450330irq/29-eth0_g0_1972-21lldpd21:01:030
121450330irq/29-eth0_g0_1972-21lldpd19:54:550
121450330irq/29-eth0_g0_1911-21runrttasks20:50:530
121450330irq/29-eth0_g0_1911-21runrttasks20:18:300
121450330irq/29-eth0_g0_0-21swapper/019:38:480
121450330irq/29-eth0_g0_0-21swapper/019:23:480
121450330irq/29-eth0_g0_0-21swapper/019:23:480
121330ksoftirqd/129162-21taskset20:29:531
2091999321cyclictest0-21swapper/120:51:031
121450320irq/29-eth0_g0_21201-21runrttasks19:11:120
121450320irq/29-eth0_g0_1911-21runrttasks20:19:540
121320ksoftirqd/1121450irq/29-eth0_g0_20:10:041
2091999311cyclictest0-21swapper/120:21:351
2091999311cyclictest0-21swapper/119:44:051
121550310irq/30-eth0_g0_0-21swapper/120:27:421
121450310irq/29-eth0_g0_29675-21runrttasks20:34:591
121450310irq/29-eth0_g0_28990-21latency_hist20:28:470
121450300irq/29-eth0_g0_0-21swapper/020:54:030
121450300irq/29-eth0_g0_0-21swapper/020:48:430
121450300irq/29-eth0_g0_0-21swapper/019:45:460
121450300irq/29-eth0_g0_0-21swapper/019:27:350
121300ksoftirqd/132181-21chrt20:59:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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