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2026-04-19 - 09:39

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Sun Apr 19, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3106821360sleep1121450irq/29-eth0_g0_22:28:241
2476021340sleep0121450irq/29-eth0_g0_21:26:030
1211000ksoftirqd/1121550irq/30-eth0_g0_20:49:281
121630ksoftirqd/1121550irq/30-eth0_g0_23:58:251
244232570sleep0121450irq/29-eth0_g0_21:23:020
325812560sleep1121550irq/30-eth0_g0_22:43:131
325812560sleep1121550irq/30-eth0_g0_22:43:131
121550ksoftirqd/1121550irq/30-eth0_g0_00:34:001
121550ksoftirqd/1121550irq/30-eth0_g0_00:34:001
121490ksoftirqd/1121550irq/30-eth0_g0_20:04:530
1083499491cyclictest1911-21runrttasks21:08:051
121470ksoftirqd/1121550irq/30-eth0_g0_23:42:291
121470ksoftirqd/1121550irq/30-eth0_g0_23:36:301
121470ksoftirqd/1121450irq/29-eth0_g0_23:26:461
121470ksoftirqd/1121450irq/29-eth0_g0_20:50:231
121550450irq/30-eth0_g0_1221-21kworker/1:200:22:171
121450ksoftirqd/1121550irq/30-eth0_g0_23:42:020
121440ksoftirqd/167472sleep023:47:520
121440ksoftirqd/1121450irq/29-eth0_g0_23:24:541
121440ksoftirqd/1121450irq/29-eth0_g0_20:59:541
121450430irq/29-eth0_g0_1911-21runrttasks21:46:120
118512430sleep1121550irq/30-eth0_g0_00:38:021
121550420irq/30-eth0_g0_1221-21kworker/1:221:17:121
121450420irq/29-eth0_g0_13-21kworker/0:123:22:300
318482410sleep1121550irq/30-eth0_g0_22:35:391
121550410irq/30-eth0_g0_1221-21kworker/1:200:04:181
121550410irq/30-eth0_g0_0-21swapper/122:15:111
121450410irq/29-eth0_g0_31ksoftirqd/023:34:570
121450410irq/29-eth0_g0_1911-21runrttasks19:59:270
121450410irq/29-eth0_g0_1911-21runrttasks19:05:010
121450410irq/29-eth0_g0_13-21kworker/0:123:24:570
121450410irq/29-eth0_g0_13-21kworker/0:122:56:580
121450410irq/29-eth0_g0_13-21kworker/0:122:25:360
121450410irq/29-eth0_g0_13-21kworker/0:121:56:210
121450410irq/29-eth0_g0_13-21kworker/0:100:36:060
121450410irq/29-eth0_g0_13-21kworker/0:100:09:410
121410ksoftirqd/1121450irq/29-eth0_g0_23:50:131
121410ksoftirqd/1121450irq/29-eth0_g0_23:10:391
121410ksoftirqd/1121450irq/29-eth0_g0_21:45:041
121410ksoftirqd/1121450irq/29-eth0_g0_19:43:451
321362400sleep0121550irq/30-eth0_g0_22:38:580
121550400irq/30-eth0_g0_1221-21kworker/1:223:30:501
121550400irq/30-eth0_g0_1221-21kworker/1:223:30:501
121550400irq/30-eth0_g0_1221-21kworker/1:223:06:401
121550400irq/30-eth0_g0_1221-21kworker/1:223:00:081
121550400irq/30-eth0_g0_1221-21kworker/1:222:48:271
121550400irq/30-eth0_g0_1221-21kworker/1:222:21:391
121550400irq/30-eth0_g0_1221-21kworker/1:222:10:401
121550400irq/30-eth0_g0_1221-21kworker/1:222:08:401
121550400irq/30-eth0_g0_1221-21kworker/1:200:13:191
121550400irq/30-eth0_g0_121ksoftirqd/122:50:051
121550400irq/30-eth0_g0_121ksoftirqd/121:39:231
121550400irq/30-eth0_g0_121ksoftirqd/120:15:581
121450400irq/29-eth0_g0_1911-21runrttasks22:18:380
121450400irq/29-eth0_g0_13-21kworker/0:123:57:430
121450400irq/29-eth0_g0_13-21kworker/0:123:14:250
121450400irq/29-eth0_g0_13-21kworker/0:122:21:570
121450400irq/29-eth0_g0_13-21kworker/0:122:10:060
121450400irq/29-eth0_g0_13-21kworker/0:122:07:320
121450400irq/29-eth0_g0_13-21kworker/0:121:30:390
121450400irq/29-eth0_g0_13-21kworker/0:121:16:390
121450400irq/29-eth0_g0_13-21kworker/0:121:11:290
121450400irq/29-eth0_g0_13-21kworker/0:100:29:380
121400ksoftirqd/1121450irq/29-eth0_g0_22:57:421
121400ksoftirqd/1121450irq/29-eth0_g0_19:32:581
121550390irq/30-eth0_g0_1221-21kworker/1:223:49:511
121550390irq/30-eth0_g0_121ksoftirqd/122:04:041
121550390irq/30-eth0_g0_121ksoftirqd/100:06:151
121450390irq/29-eth0_g0_31ksoftirqd/000:15:270
121450390irq/29-eth0_g0_13-21kworker/0:122:01:090
121450390irq/29-eth0_g0_13-21kworker/0:121:52:410
121450390irq/29-eth0_g0_13-21kworker/0:121:52:410
121450390irq/29-eth0_g0_13-21kworker/0:121:41:160
121390ksoftirqd/1121450irq/29-eth0_g0_20:39:321
121390ksoftirqd/1121450irq/29-eth0_g0_20:34:041
121550380irq/30-eth0_g0_1221-21kworker/1:223:15:251
121550380irq/30-eth0_g0_121ksoftirqd/121:13:161
121550380irq/30-eth0_g0_121ksoftirqd/100:27:191
121550380irq/30-eth0_g0_0-21swapper/121:40:581
121550380irq/30-eth0_g0_0-21swapper/100:16:451
121450380irq/29-eth0_g0_25764-21chrt21:35:530
121450380irq/29-eth0_g0_1911-21runrttasks20:49:000
121450380irq/29-eth0_g0_1911-21runrttasks20:11:380
121450380irq/29-eth0_g0_13-21kworker/0:123:15:440
121450380irq/29-eth0_g0_13-21kworker/0:123:05:110
121450380irq/29-eth0_g0_13-21kworker/0:122:51:100
121450380irq/29-eth0_g0_13-21kworker/0:122:41:160
121450380irq/29-eth0_g0_13-21kworker/0:122:41:160
121450380irq/29-eth0_g0_13-21kworker/0:100:32:060
121450380irq/29-eth0_g0_13-21kworker/0:100:32:060
121380ksoftirqd/1121450irq/29-eth0_g0_19:10:511
121550370irq/30-eth0_g0_1221-21kworker/1:221:55:121
121550370irq/30-eth0_g0_1221-21kworker/1:221:31:531
121450370irq/29-eth0_g0_1911-21runrttasks22:45:280
121450370irq/29-eth0_g0_1911-21runrttasks20:53:070
121450370irq/29-eth0_g0_1911-21runrttasks20:37:290
121450370irq/29-eth0_g0_1911-21runrttasks20:28:460
121450370irq/29-eth0_g0_1911-21runrttasks20:08:030
121450370irq/29-eth0_g0_1911-21runrttasks19:48:350
121450370irq/29-eth0_g0_1911-21runrttasks00:20:500
121450370irq/29-eth0_g0_13-21kworker/0:123:49:530
121450370irq/29-eth0_g0_13-21kworker/0:123:31:250
121450370irq/29-eth0_g0_13-21kworker/0:123:31:250
121450370irq/29-eth0_g0_13-21kworker/0:123:01:460
121450370irq/29-eth0_g0_13-21kworker/0:122:33:210
121450370irq/29-eth0_g0_10832-21chrt19:09:531
1083499371cyclictest273822sleep121:51:581
1083499371cyclictest273822sleep121:51:581
121550360irq/30-eth0_g0_1221-21kworker/1:222:31:351
121450360irq/29-eth0_g0_31ksoftirqd/000:11:030
121450360irq/29-eth0_g0_20566-21cat20:44:540
121450360irq/29-eth0_g0_1911-21runrttasks21:05:180
121450360irq/29-eth0_g0_1911-21runrttasks20:29:540
121450360irq/29-eth0_g0_1911-21runrttasks20:23:070
121450360irq/29-eth0_g0_1911-21runrttasks20:16:290
121450360irq/29-eth0_g0_1911-21runrttasks19:54:150
121450360irq/29-eth0_g0_1911-21runrttasks19:14:040
121450360irq/29-eth0_g0_13389-21latency_hist19:34:540
121450360irq/29-eth0_g0_13-21kworker/0:100:02:110
121550350irq/30-eth0_g0_1221-21kworker/1:221:26:211
121450350irq/29-eth0_g0_1911-21runrttasks21:00:560
121450350irq/29-eth0_g0_1911-21runrttasks21:00:560
121450350irq/29-eth0_g0_1911-21runrttasks19:39:360
121450350irq/29-eth0_g0_1911-21runrttasks19:39:360
121450350irq/29-eth0_g0_1911-21runrttasks19:27:570
121450350irq/29-eth0_g0_1911-21runrttasks19:15:130
121550340irq/30-eth0_g0_0-21swapper/120:41:451
121450340irq/29-eth0_g0_1911-21runrttasks20:55:200
121450340irq/29-eth0_g0_1911-21runrttasks19:23:290
1083499342cyclictest10831-21cyclictest19:16:191
1083499341cyclictest14917-21sort19:49:531
1083499341cyclictest0-21swapper/121:21:301
1083499341cyclictest0-21swapper/119:54:001
1083499341cyclictest0-21swapper/119:21:301
121330ksoftirqd/1121550irq/30-eth0_g0_19:41:430
1083499331cyclictest12925-21wc19:29:541
1083499331cyclictest0-21swapper/119:57:551
1083499331cyclictest0-21swapper/119:37:461
1083499331cyclictest0-21swapper/119:37:461
121550320irq/30-eth0_g0_0-21swapper/120:05:531
121320ksoftirqd/1121450irq/29-eth0_g0_20:26:191
121320ksoftirqd/1121450irq/29-eth0_g0_20:23:591
121320ksoftirqd/1121450irq/29-eth0_g0_20:10:541
1083499320cyclictest0-21swapper/120:02:221
121450310irq/29-eth0_g0_22131-21runrttasks21:00:061
121450310irq/29-eth0_g0_22131-21runrttasks21:00:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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