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2026-05-21 - 03:57

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 Thu May 21, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2725521370sleep0121450irq/29-eth0_g0_21:44:100
1229221310sleep1121450irq/29-eth0_g0_00:36:451
110262700sleep0121550irq/30-eth0_g0_00:23:490
292712620chrt121450irq/29-eth0_g0_22:04:081
121620ksoftirqd/1121550irq/30-eth0_g0_23:35:401
319642610sleep1121450irq/29-eth0_g0_22:31:031
78432530sleep1121450irq/29-eth0_g0_23:53:081
121530ksoftirqd/1121550irq/30-eth0_g0_23:20:171
121500ksoftirqd/1121550irq/30-eth0_g0_00:17:461
121470ksoftirqd/1121550irq/30-eth0_g0_21:46:311
121470ksoftirqd/1121450irq/29-eth0_g0_23:59:130
121470ksoftirqd/1121450irq/29-eth0_g0_21:23:311
252232460sleep0121450irq/29-eth0_g0_21:24:060
121460ksoftirqd/1121550irq/30-eth0_g0_23:29:201
121460ksoftirqd/1121550irq/30-eth0_g0_21:49:221
121460ksoftirqd/1121450irq/29-eth0_g0_20:26:151
121550450irq/30-eth0_g0_1221-21kworker/1:222:19:571
121450450irq/29-eth0_g0_1911-21runrttasks19:04:040
121450ksoftirqd/1121550irq/30-eth0_g0_23:59:191
121450ksoftirqd/1121550irq/30-eth0_g0_23:05:261
121450ksoftirqd/1121550irq/30-eth0_g0_00:29:351
121550440irq/30-eth0_g0_31376-21chrt22:25:041
121550440irq/30-eth0_g0_1221-21kworker/1:221:37:241
121550440irq/30-eth0_g0_1221-21kworker/1:221:37:241
121550440irq/30-eth0_g0_1221-21kworker/1:200:13:081
121450440irq/29-eth0_g0_31ksoftirqd/023:52:450
121440ksoftirqd/1121550irq/30-eth0_g0_23:39:071
121440ksoftirqd/1121550irq/30-eth0_g0_22:01:551
121440ksoftirqd/1121450irq/29-eth0_g0_22:52:281
121450430irq/29-eth0_g0_1911-21runrttasks22:08:020
121430ksoftirqd/1121550irq/30-eth0_g0_00:22:181
121430ksoftirqd/1121550irq/30-eth0_g0_00:18:570
121430ksoftirqd/1121450irq/29-eth0_g0_23:57:050
121430ksoftirqd/1121450irq/29-eth0_g0_23:12:120
121550420irq/30-eth0_g0_1221-21kworker/1:221:41:431
121550420irq/30-eth0_g0_1221-21kworker/1:200:25:451
121420ksoftirqd/1121450irq/29-eth0_g0_22:54:020
4732410sleep0121550irq/30-eth0_g0_22:40:270
4732410sleep0121550irq/30-eth0_g0_22:40:270
121550410irq/30-eth0_g0_1221-21kworker/1:222:08:471
121550410irq/30-eth0_g0_121ksoftirqd/121:12:551
121450410irq/29-eth0_g0_13-21kworker/0:123:25:520
121450410irq/29-eth0_g0_121ksoftirqd/123:54:071
121410ksoftirqd/1121550irq/30-eth0_g0_22:35:570
65452400sleep0121550irq/30-eth0_g0_23:39:470
121450400irq/29-eth0_g0_1911-21runrttasks23:37:000
121450400irq/29-eth0_g0_1911-21runrttasks23:13:510
121450400irq/29-eth0_g0_13-21kworker/0:122:02:140
121450400irq/29-eth0_g0_121ksoftirqd/122:48:280
121400ksoftirqd/1121550irq/30-eth0_g0_21:20:230
121400ksoftirqd/1121550irq/30-eth0_g0_21:09:490
121550390irq/30-eth0_g0_1966-21snmpd21:57:541
121550390irq/30-eth0_g0_0-21swapper/123:10:231
121450390irq/29-eth0_g0_9606-21taskset00:10:000
121450390irq/29-eth0_g0_31ksoftirqd/021:36:460
121450390irq/29-eth0_g0_31ksoftirqd/021:36:460
121450390irq/29-eth0_g0_31ksoftirqd/021:29:550
121450390irq/29-eth0_g0_31ksoftirqd/000:35:360
121450390irq/29-eth0_g0_1911-21runrttasks23:19:510
121450390irq/29-eth0_g0_1911-21runrttasks20:28:140
121450390irq/29-eth0_g0_13-21kworker/0:123:29:060
121450390irq/29-eth0_g0_13-21kworker/0:122:53:400
121450390irq/29-eth0_g0_13-21kworker/0:122:17:540
121450390irq/29-eth0_g0_13-21kworker/0:122:17:540
121450390irq/29-eth0_g0_13-21kworker/0:121:41:410
121450390irq/29-eth0_g0_13-21kworker/0:100:18:300
121450390irq/29-eth0_g0_13-21kworker/0:100:03:420
121390ksoftirqd/1121550irq/30-eth0_g0_22:58:470
121390ksoftirqd/1121550irq/30-eth0_g0_22:15:381
121390ksoftirqd/1121550irq/30-eth0_g0_22:15:381
121550380irq/30-eth0_g0_1905-21crond20:44:391
121550380irq/30-eth0_g0_1221-21kworker/1:223:16:111
121550380irq/30-eth0_g0_1221-21kworker/1:222:41:451
121550380irq/30-eth0_g0_1221-21kworker/1:222:41:451
121550380irq/30-eth0_g0_121ksoftirqd/123:46:111
121550380irq/30-eth0_g0_121ksoftirqd/121:14:291
121550380irq/30-eth0_g0_0-21swapper/122:38:251
121450380irq/29-eth0_g0_1911-21runrttasks22:09:270
121450380irq/29-eth0_g0_13-21kworker/0:122:24:330
121450380irq/29-eth0_g0_13-21kworker/0:122:23:130
121450380irq/29-eth0_g0_13-21kworker/0:121:57:280
121450380irq/29-eth0_g0_13-21kworker/0:121:50:530
121450380irq/29-eth0_g0_13-21kworker/0:121:18:270
121380ksoftirqd/1121550irq/30-eth0_g0_23:44:590
121380ksoftirqd/1121550irq/30-eth0_g0_20:42:040
121380ksoftirqd/1121550irq/30-eth0_g0_20:42:040
121380ksoftirqd/1121550irq/30-eth0_g0_20:21:530
121380ksoftirqd/1121550irq/30-eth0_g0_19:35:360
121380ksoftirqd/1121450irq/29-eth0_g0_22:55:341
121380ksoftirqd/111425-21munin-run19:08:401
121550370irq/30-eth0_g0_0-21swapper/121:26:431
121450370irq/29-eth0_g0_20560-21latency_hist20:38:410
121450370irq/29-eth0_g0_1911-21runrttasks20:29:200
121450370irq/29-eth0_g0_1911-21runrttasks20:13:550
121450370irq/29-eth0_g0_13-21kworker/0:123:04:500
121450370irq/29-eth0_g0_13-21kworker/0:122:33:240
121450370irq/29-eth0_g0_13-21kworker/0:100:28:480
121450370irq/29-eth0_g0_121ksoftirqd/123:26:391
121370ksoftirqd/1121450irq/29-eth0_g0_20:17:131
121550360irq/30-eth0_g0_1221-21kworker/1:223:03:291
121550360irq/30-eth0_g0_0-21swapper/122:44:001
121450360irq/29-eth0_g0_1911-21runrttasks20:59:470
121450360irq/29-eth0_g0_1911-21runrttasks20:06:280
121450360irq/29-eth0_g0_121ksoftirqd/121:30:151
121360ksoftirqd/1121550irq/30-eth0_g0_20:56:270
121360ksoftirqd/1121550irq/30-eth0_g0_19:33:030
121360ksoftirqd/1121550irq/30-eth0_g0_19:33:030
1142899361cyclictest12498-21cat19:18:411
121550350irq/30-eth0_g0_1221-21kworker/1:200:05:231
121450350irq/29-eth0_g0_1911-21runrttasks20:53:220
121450350irq/29-eth0_g0_1911-21runrttasks20:48:380
121450350irq/29-eth0_g0_1911-21runrttasks19:41:080
121450350irq/29-eth0_g0_13460-21latency_hist19:28:410
121450350irq/29-eth0_g0_13460-21latency_hist19:28:410
121350ksoftirqd/1121550irq/30-eth0_g0_21:07:480
1142899351cyclictest15995-21grep19:53:401
121450340irq/29-eth0_g0_1911-21runrttasks20:09:360
121450340irq/29-eth0_g0_1911-21runrttasks20:00:510
121450340irq/29-eth0_g0_1911-21runrttasks19:09:180
121340ksoftirqd/1121550irq/30-eth0_g0_19:49:160
121340ksoftirqd/1121450irq/29-eth0_g0_20:20:041
121340ksoftirqd/111650-21taskset19:10:211
1142899341cyclictest0-21swapper/119:39:431
121450330irq/29-eth0_g0_20815-21runrttasks20:40:501
121450330irq/29-eth0_g0_20815-21runrttasks20:40:501
121450330irq/29-eth0_g0_1911-21runrttasks19:54:420
121450330irq/29-eth0_g0_1142899cyclictest20:08:401
121330ksoftirqd/1121550irq/30-eth0_g0_19:18:590
121330ksoftirqd/1121550irq/30-eth0_g0_19:14:300
121450320irq/29-eth0_g0_19713-21runrttasks20:29:501
1142899321cyclictest22924-21chrt21:01:491
121550310irq/30-eth0_g0_1911-21runrttasks19:46:590
121550310irq/30-eth0_g0_0-21swapper/121:04:591
121550310irq/30-eth0_g0_0-21swapper/119:56:021
121450310irq/29-eth0_g0_22212-21runrttasks20:54:241
1142899311cyclictest0-21swapper/120:49:001
1142899311cyclictest0-21swapper/120:35:451
1142899311cyclictest0-21swapper/120:11:421
1142899311cyclictest0-21swapper/119:59:161
1142899311cyclictest0-21swapper/119:47:041
1142899311cyclictest0-21swapper/119:36:251
1142899311cyclictest0-21swapper/119:23:351
1142899301cyclictest0-21swapper/119:29:361
1142899301cyclictest0-21swapper/119:29:361
121550290irq/30-eth0_g0_0-21swapper/119:24:151
121550290irq/30-eth0_g0_0-21swapper/119:24:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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