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2025-12-07 - 13:14

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 Sun Dec 07, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121600ksoftirqd/1156332sleep023:19:570
121570ksoftirqd/1121750irq/30-eth0_g0_20:48:021
103252570sleep1121650irq/29-eth0_g0_22:27:161
237142560sleep1121750irq/30-eth0_g0_00:39:571
121520ksoftirqd/1121750irq/30-eth0_g0_00:20:191
121470ksoftirqd/1121750irq/30-eth0_g0_23:32:551
121470ksoftirqd/1121750irq/30-eth0_g0_21:12:311
121460ksoftirqd/1121750irq/30-eth0_g0_22:55:101
121440ksoftirqd/1121750irq/30-eth0_g0_23:57:171
121440ksoftirqd/1121650irq/29-eth0_g0_22:06:181
37372430sleep0121650irq/29-eth0_g0_21:21:580
37372430sleep0121650irq/29-eth0_g0_21:21:580
121750430irq/30-eth0_g0_1219-21kworker/1:221:50:231
121650430irq/29-eth0_g0_31ksoftirqd/021:29:160
121650430irq/29-eth0_g0_31ksoftirqd/020:54:580
121430ksoftirqd/1121750irq/30-eth0_g0_22:10:001
121430ksoftirqd/1121650irq/29-eth0_g0_23:26:050
121430ksoftirqd/1121650irq/29-eth0_g0_20:53:101
121430ksoftirqd/1121650irq/29-eth0_g0_20:12:121
121750420irq/30-eth0_g0_1219-21kworker/1:223:26:231
121750420irq/30-eth0_g0_1219-21kworker/1:222:40:501
121750420irq/30-eth0_g0_1219-21kworker/1:222:03:261
121650420irq/29-eth0_g0_58192sleep021:42:400
121650420irq/29-eth0_g0_31ksoftirqd/021:13:140
121650420irq/29-eth0_g0_1966-21runrttasks19:09:510
121750410irq/30-eth0_g0_6250-21taskset21:46:481
121750410irq/30-eth0_g0_1219-21kworker/1:200:32:511
121410ksoftirqd/1121650irq/29-eth0_g0_23:52:260
121410ksoftirqd/1121650irq/29-eth0_g0_23:15:501
121750400irq/30-eth0_g0_1219-21kworker/1:200:11:381
121750400irq/30-eth0_g0_121ksoftirqd/122:31:181
121650400irq/29-eth0_g0_31ksoftirqd/000:39:010
121650400irq/29-eth0_g0_1966-21runrttasks19:50:410
121650400irq/29-eth0_g0_181302sleep023:44:500
121650400irq/29-eth0_g0_13-21kworker/0:122:55:250
121650400irq/29-eth0_g0_13-21kworker/0:122:35:410
121650400irq/29-eth0_g0_13-21kworker/0:100:31:340
121650400irq/29-eth0_g0_13-21kworker/0:100:15:030
121650400irq/29-eth0_g0_121ksoftirqd/121:33:260
121650400irq/29-eth0_g0_121ksoftirqd/100:21:570
121750390irq/30-eth0_g0_1219-21kworker/1:223:02:251
121750390irq/30-eth0_g0_1219-21kworker/1:222:35:271
121750390irq/30-eth0_g0_121ksoftirqd/123:42:271
121750390irq/30-eth0_g0_121ksoftirqd/123:20:171
121650390irq/29-eth0_g0_31ksoftirqd/000:12:280
121650390irq/29-eth0_g0_25808-21latency_hist19:39:580
121650390irq/29-eth0_g0_2277699cyclictest00:02:210
121650390irq/29-eth0_g0_1966-21runrttasks22:50:460
121650390irq/29-eth0_g0_13-21kworker/0:123:48:480
121650390irq/29-eth0_g0_13-21kworker/0:123:39:320
121650390irq/29-eth0_g0_13-21kworker/0:122:00:510
121650390irq/29-eth0_g0_13-21kworker/0:121:46:300
121650390irq/29-eth0_g0_13-21kworker/0:121:18:100
121650390irq/29-eth0_g0_121ksoftirqd/123:59:250
121650390irq/29-eth0_g0_121ksoftirqd/121:50:330
121390ksoftirqd/1121650irq/29-eth0_g0_23:06:421
121390ksoftirqd/1121650irq/29-eth0_g0_22:20:531
142222380sleep0121750irq/30-eth0_g0_23:05:300
121750380irq/30-eth0_g0_1219-21kworker/1:223:52:041
121750380irq/30-eth0_g0_1219-21kworker/1:222:46:111
121750380irq/30-eth0_g0_1219-21kworker/1:221:29:341
121750380irq/30-eth0_g0_1219-21kworker/1:221:21:461
121750380irq/30-eth0_g0_1219-21kworker/1:221:21:461
121750380irq/30-eth0_g0_121ksoftirqd/123:49:011
121750380irq/30-eth0_g0_121ksoftirqd/123:39:301
121650380irq/29-eth0_g0_31ksoftirqd/021:57:060
121650380irq/29-eth0_g0_29346-21latency_hist20:14:580
121650380irq/29-eth0_g0_214012sleep100:16:391
121650380irq/29-eth0_g0_13-21kworker/0:123:10:110
121650380irq/29-eth0_g0_13-21kworker/0:122:29:190
121650380irq/29-eth0_g0_13-21kworker/0:122:13:240
121650380irq/29-eth0_g0_13-21kworker/0:122:05:340
121650380irq/29-eth0_g0_121ksoftirqd/122:17:091
121650380irq/29-eth0_g0_121ksoftirqd/100:03:391
121380ksoftirqd/1121750irq/30-eth0_g0_22:44:050
121380ksoftirqd/1121650irq/29-eth0_g0_21:34:541
2277799371cyclictest7571-21taskset21:59:571
121750370irq/30-eth0_g0_22671-21taskset19:08:521
121750370irq/30-eth0_g0_1219-21kworker/1:221:40:131
121750370irq/30-eth0_g0_1219-21kworker/1:221:19:241
121750370irq/30-eth0_g0_1219-21kworker/1:200:08:131
121750370irq/30-eth0_g0_121ksoftirqd/123:12:261
121650370irq/29-eth0_g0_31ksoftirqd/023:20:360
121650370irq/29-eth0_g0_1966-21runrttasks20:34:300
121650370irq/29-eth0_g0_1966-21runrttasks20:03:450
121650370irq/29-eth0_g0_1966-21runrttasks19:43:170
121650370irq/29-eth0_g0_13-21kworker/0:123:30:260
121650370irq/29-eth0_g0_13-21kworker/0:122:31:150
121650370irq/29-eth0_g0_13-21kworker/0:122:21:000
121650370irq/29-eth0_g0_13-21kworker/0:122:18:340
121650370irq/29-eth0_g0_13-21kworker/0:100:26:330
121650370irq/29-eth0_g0_13-21kworker/0:100:09:340
121650370irq/29-eth0_g0_121ksoftirqd/121:38:171
121370ksoftirqd/1121650irq/29-eth0_g0_00:26:081
2277799361cyclictest2475-21diskmemload21:09:571
2277799361cyclictest2020-21cat21:04:581
2277799361cyclictest2020-21cat21:04:581
121750360irq/30-eth0_g0_1966-21runrttasks20:36:300
121650360irq/29-eth0_g0_27822-21munin-run19:59:580
121650360irq/29-eth0_g0_1966-21runrttasks22:45:530
121650360irq/29-eth0_g0_1966-21runrttasks21:06:340
121650360irq/29-eth0_g0_1966-21runrttasks20:57:570
121650360irq/29-eth0_g0_1966-21runrttasks20:06:460
121650360irq/29-eth0_g0_1966-21runrttasks19:49:440
121650360irq/29-eth0_g0_1966-21runrttasks19:49:440
121650360irq/29-eth0_g0_1966-21runrttasks19:31:510
121650360irq/29-eth0_g0_13-21kworker/0:123:00:000
121650360irq/29-eth0_g0_121ksoftirqd/122:54:471
121650360irq/29-eth0_g0_0-21swapper/020:44:220
121360ksoftirqd/1121650irq/29-eth0_g0_19:46:071
121360ksoftirqd/1121650irq/29-eth0_g0_19:46:071
22777993529cyclictest23781-21latency_hist19:19:581
2277799351cyclictest30411-21grep20:24:581
2277799351cyclictest28843-21cat20:09:581
121650350irq/29-eth0_g0_31ksoftirqd/019:10:310
121650350irq/29-eth0_g0_1966-21runrttasks20:22:340
121650350irq/29-eth0_g0_1966-21runrttasks20:18:450
121650350irq/29-eth0_g0_13-21kworker/0:121:35:410
2277799341cyclictest0-21swapper/120:35:291
2277799341cyclictest0-21swapper/120:19:581
2277799340cyclictest0-21swapper/120:02:181
121650340irq/29-eth0_g0_1966-21runrttasks20:49:410
121340ksoftirqd/124771-21taskset19:29:431
2277799331cyclictest32427-21cat20:44:591
2277799331cyclictest0-21swapper/119:22:541
121750330irq/30-eth0_g0_0-21swapper/120:29:151
121750330irq/30-eth0_g0_0-21swapper/119:36:461
121750330irq/30-eth0_g0_0-21swapper/119:31:051
121650330irq/29-eth0_g0_1966-21runrttasks21:03:270
121650330irq/29-eth0_g0_1966-21runrttasks21:03:270
121650330irq/29-eth0_g0_0-21swapper/020:26:500
2277799321cyclictest0-21swapper/120:57:281
2277799321cyclictest0-21swapper/120:30:211
2277799321cyclictest0-21swapper/119:40:511
2277799321cyclictest0-21swapper/119:11:351
2277799311cyclictest0-21swapper/119:50:591
121650310irq/29-eth0_g0_2277799cyclictest19:59:581
121650310irq/29-eth0_g0_1966-21runrttasks19:22:480
121650300irq/29-eth0_g0_0-21swapper/019:26:540
121650300irq/29-eth0_g0_0-21swapper/019:19:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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