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2026-04-24 - 05:37

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 Fri Apr 24, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211050ksoftirqd/1121550irq/30-eth0_g0_22:25:591
1211000ksoftirqd/1121550irq/30-eth0_g0_19:19:511
1211000ksoftirqd/1121550irq/30-eth0_g0_19:19:511
9712770sleep1121450irq/29-eth0_g0_21:47:511
121690ksoftirqd/1121550irq/30-eth0_g0_23:07:271
121540ksoftirqd/1121550irq/30-eth0_g0_21:39:541
65822510sleep1121450irq/29-eth0_g0_22:42:591
121470ksoftirqd/1121550irq/30-eth0_g0_23:12:521
121470ksoftirqd/1121550irq/30-eth0_g0_00:15:491
121440ksoftirqd/1204672chrt19:39:420
121440ksoftirqd/1121550irq/30-eth0_g0_22:33:561
121440ksoftirqd/1121550irq/30-eth0_g0_00:29:420
121440ksoftirqd/1121550irq/30-eth0_g0_00:22:490
121440ksoftirqd/1121450irq/29-eth0_g0_22:19:550
323872430chrt121550irq/30-eth0_g0_21:37:301
121550430irq/30-eth0_g0_1221-21kworker/1:223:45:451
121550430irq/30-eth0_g0_1221-21kworker/1:223:45:451
121550430irq/30-eth0_g0_1221-21kworker/1:222:59:401
121550430irq/30-eth0_g0_1221-21kworker/1:222:06:481
140892420sleep0121450irq/29-eth0_g0_23:57:090
121550420irq/30-eth0_g0_1221-21kworker/1:223:32:271
121550420irq/30-eth0_g0_1221-21kworker/1:223:19:241
121550420irq/30-eth0_g0_1221-21kworker/1:222:35:071
121550420irq/30-eth0_g0_1221-21kworker/1:222:19:561
121450420irq/29-eth0_g0_31ksoftirqd/023:49:210
121450420irq/29-eth0_g0_31ksoftirqd/023:49:210
121450420irq/29-eth0_g0_31ksoftirqd/021:51:470
121450420irq/29-eth0_g0_1911-21runrttasks22:35:560
121450420irq/29-eth0_g0_1499watchdog/122:14:181
121450420irq/29-eth0_g0_13-21kworker/0:123:06:330
121420ksoftirqd/1121450irq/29-eth0_g0_23:57:091
121420ksoftirqd/1121450irq/29-eth0_g0_00:36:261
121550410irq/30-eth0_g0_31ksoftirqd/000:39:420
121450410irq/29-eth0_g0_31ksoftirqd/022:47:120
121450410irq/29-eth0_g0_1911-21runrttasks20:13:080
121450410irq/29-eth0_g0_13-21kworker/0:121:35:460
121450410irq/29-eth0_g0_121ksoftirqd/121:25:351
121450410irq/29-eth0_g0_121ksoftirqd/100:34:020
121410ksoftirqd/1121450irq/29-eth0_g0_20:52:011
121410ksoftirqd/1121450irq/29-eth0_g0_20:03:311
121550400irq/30-eth0_g0_121ksoftirqd/121:50:231
121450400irq/29-eth0_g0_899watchdog/021:32:500
121450400irq/29-eth0_g0_31ksoftirqd/021:59:010
121450400irq/29-eth0_g0_1744299cyclictest23:33:100
121450400irq/29-eth0_g0_13-21kworker/0:123:01:080
121450400irq/29-eth0_g0_121ksoftirqd/122:02:020
121450400irq/29-eth0_g0_121ksoftirqd/121:21:291
121400ksoftirqd/1121550irq/30-eth0_g0_21:47:080
121400ksoftirqd/1121450irq/29-eth0_g0_19:30:451
121550390irq/30-eth0_g0_31ksoftirqd/022:13:400
121550390irq/30-eth0_g0_121ksoftirqd/123:51:571
121550390irq/30-eth0_g0_121ksoftirqd/123:22:011
121550390irq/30-eth0_g0_0-21swapper/122:17:051
121550390irq/30-eth0_g0_0-21swapper/100:11:031
121450390irq/29-eth0_g0_31ksoftirqd/023:49:540
121450390irq/29-eth0_g0_13-21kworker/0:122:55:280
121450390irq/29-eth0_g0_13-21kworker/0:122:42:030
121450390irq/29-eth0_g0_13-21kworker/0:122:32:050
121450390irq/29-eth0_g0_13-21kworker/0:122:28:240
121450390irq/29-eth0_g0_121ksoftirqd/123:39:520
121390ksoftirqd/1121450irq/29-eth0_g0_21:11:111
164512380sleep1121450irq/29-eth0_g0_00:20:111
121550380irq/30-eth0_g0_121ksoftirqd/122:49:591
121550380irq/30-eth0_g0_121ksoftirqd/122:45:381
121550380irq/30-eth0_g0_0-21swapper/121:58:071
121550380irq/30-eth0_g0_0-21swapper/121:15:031
121550380irq/30-eth0_g0_0-21swapper/100:09:011
121450380irq/29-eth0_g0_6222sleep021:44:410
121450380irq/29-eth0_g0_1911-21runrttasks19:31:050
121450380irq/29-eth0_g0_17441-21cyclictest19:09:420
121450380irq/29-eth0_g0_17251-21runrttasks19:07:351
121450380irq/29-eth0_g0_13-21kworker/0:123:35:540
121450380irq/29-eth0_g0_13-21kworker/0:123:27:290
121450380irq/29-eth0_g0_13-21kworker/0:123:20:470
121450380irq/29-eth0_g0_13-21kworker/0:123:11:350
121450380irq/29-eth0_g0_13-21kworker/0:122:53:590
121450380irq/29-eth0_g0_13-21kworker/0:122:07:090
121380ksoftirqd/1121550irq/30-eth0_g0_20:45:150
121380ksoftirqd/1121550irq/30-eth0_g0_20:43:460
121550370irq/30-eth0_g0_28606-21latency_hist20:59:420
121550370irq/30-eth0_g0_19120-21taskset19:25:441
121550370irq/30-eth0_g0_1221-21kworker/1:223:40:311
121550370irq/30-eth0_g0_1221-21kworker/1:223:37:311
121550370irq/30-eth0_g0_1221-21kworker/1:223:25:101
121550370irq/30-eth0_g0_121ksoftirqd/122:01:061
121550370irq/30-eth0_g0_121ksoftirqd/100:32:091
121550370irq/30-eth0_g0_0-21swapper/121:34:411
121450370irq/29-eth0_g0_31ksoftirqd/021:19:590
121450370irq/29-eth0_g0_26026-21latency_hist20:34:410
121450370irq/29-eth0_g0_1911-21runrttasks20:28:310
121450370irq/29-eth0_g0_1911-21runrttasks20:28:310
121450370irq/29-eth0_g0_1911-21runrttasks19:24:360
121450370irq/29-eth0_g0_1911-21runrttasks19:24:360
121450370irq/29-eth0_g0_1911-21runrttasks00:10:360
121450370irq/29-eth0_g0_13-21kworker/0:123:16:190
121450370irq/29-eth0_g0_13-21kworker/0:122:16:340
121450370irq/29-eth0_g0_13-21kworker/0:121:25:130
121450370irq/29-eth0_g0_13-21kworker/0:121:15:460
121450370irq/29-eth0_g0_13-21kworker/0:121:10:390
121450370irq/29-eth0_g0_13-21kworker/0:100:15:330
121450370irq/29-eth0_g0_0-21swapper/000:00:190
1744399368cyclictest121550irq/30-eth0_g0_00:26:011
1744399360cyclictest0-21swapper/121:08:091
121550360irq/30-eth0_g0_1221-21kworker/1:223:00:351
121550360irq/30-eth0_g0_1221-21kworker/1:200:00:251
121450360irq/29-eth0_g0_28587-21latency_hist20:59:420
121450360irq/29-eth0_g0_1911-21runrttasks21:05:460
121450360irq/29-eth0_g0_1911-21runrttasks20:53:230
121450360irq/29-eth0_g0_1911-21runrttasks20:21:190
121450360irq/29-eth0_g0_1911-21runrttasks20:18:170
121450360irq/29-eth0_g0_1911-21runrttasks19:54:450
121360ksoftirqd/121122-21taskset19:45:351
1744399351cyclictest252492sleep120:26:411
1744399351cyclictest252492sleep120:26:411
1744399351cyclictest0-21swapper/121:02:091
121450350irq/29-eth0_g0_20978-21cat19:44:420
121450350irq/29-eth0_g0_1911-21runrttasks19:53:140
121450350irq/29-eth0_g0_1911-21runrttasks00:05:100
1744399341cyclictest0-21swapper/120:12:021
121450340irq/29-eth0_g0_1911-21runrttasks19:14:310
1744399331cyclictest20325-21chrt19:38:061
1744399331cyclictest0-21swapper/119:14:421
121550330irq/30-eth0_g0_22514-21latency_hist19:59:421
1744399321cyclictest0-21swapper/120:58:181
121550320irq/30-eth0_g0_1911-21runrttasks20:07:110
121450320irq/29-eth0_g0_19149-21seq19:26:050
121450320irq/29-eth0_g0_18456-21cat19:19:420
1744399311cyclictest0-21swapper/120:44:481
1744399311cyclictest0-21swapper/120:40:181
1744399311cyclictest0-21swapper/120:34:491
1744399311cyclictest0-21swapper/120:34:421
1744399311cyclictest0-21swapper/120:16:191
1744399310cyclictest0-21swapper/119:41:361
121450310irq/29-eth0_g0_18286-21runrttasks19:17:481
121450310irq/29-eth0_g0_0-21swapper/020:04:430
121550300irq/30-eth0_g0_24851-21seq20:22:551
121550300irq/30-eth0_g0_0-21swapper/019:45:420
121450300irq/29-eth0_g0_21862-21runrttasks19:53:161
121550290irq/30-eth0_g0_0-21swapper/120:07:451
121450290irq/29-eth0_g0_0-21swapper/020:35:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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