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2026-06-11 - 09:15

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 Jun 11, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1399721420sleep0121750irq/30-eth0_g0_23:21:500
121910ksoftirqd/1293102sleep122:12:171
121910ksoftirqd/1293102sleep122:12:171
121910ksoftirqd/1121750irq/30-eth0_g0_23:59:050
121860ksoftirqd/1121650irq/29-eth0_g0_22:33:170
121820ksoftirqd/1121750irq/30-eth0_g0_22:57:571
121790ksoftirqd/1121750irq/30-eth0_g0_19:14:181
96242760sleep1121750irq/30-eth0_g0_23:04:271
121720ksoftirqd/1121750irq/30-eth0_g0_00:26:191
61082700sleep1121750irq/30-eth0_g0_22:49:321
281352680sleep1121650irq/29-eth0_g0_22:07:511
121630ksoftirqd/1121750irq/30-eth0_g0_22:48:521
121600ksoftirqd/1121650irq/29-eth0_g0_23:59:341
327612580chrt121650irq/29-eth0_g0_22:24:411
121580ksoftirqd/1121650irq/29-eth0_g0_21:59:050
189842550sleep1121650irq/29-eth0_g0_21:29:331
121520ksoftirqd/1121650irq/29-eth0_g0_21:43:380
121490ksoftirqd/115956-21ps19:04:341
40202470chrt121750irq/30-eth0_g0_22:39:430
121650470irq/29-eth0_g0_1964-21runrttasks19:06:560
121470ksoftirqd/1121750irq/30-eth0_g0_21:17:131
121470ksoftirqd/1121650irq/29-eth0_g0_00:20:080
121470ksoftirqd/1121650irq/29-eth0_g0_00:20:080
121650460irq/29-eth0_g0_31ksoftirqd/021:29:360
121650460irq/29-eth0_g0_13-21kworker/0:121:22:270
121460ksoftirqd/1121750irq/30-eth0_g0_21:54:191
121460ksoftirqd/1121650irq/29-eth0_g0_00:24:131
121460ksoftirqd/1121650irq/29-eth0_g0_00:24:131
121650450irq/29-eth0_g0_0-21swapper/020:59:350
121450ksoftirqd/1121750irq/30-eth0_g0_00:11:211
121450ksoftirqd/1121650irq/29-eth0_g0_21:37:561
121750440irq/30-eth0_g0_121ksoftirqd/122:20:041
121440ksoftirqd/1121750irq/30-eth0_g0_23:39:320
121440ksoftirqd/1121650irq/29-eth0_g0_23:12:371
121750430irq/30-eth0_g0_1219-21kworker/1:223:44:241
121750430irq/30-eth0_g0_1219-21kworker/1:222:01:001
121750430irq/30-eth0_g0_1219-21kworker/1:221:26:091
121750430irq/30-eth0_g0_1219-21kworker/1:200:08:351
139442420sleep1121650irq/29-eth0_g0_23:21:121
121750420irq/30-eth0_g0_13554-21diskmemload23:37:081
121750420irq/30-eth0_g0_1219-21kworker/1:223:02:241
121750420irq/30-eth0_g0_1219-21kworker/1:221:52:221
121750420irq/30-eth0_g0_1219-21kworker/1:221:12:331
121750420irq/30-eth0_g0_1219-21kworker/1:200:34:401
121750420irq/30-eth0_g0_121ksoftirqd/120:03:511
121650420irq/29-eth0_g0_31ksoftirqd/023:16:300
121650420irq/29-eth0_g0_13-21kworker/0:123:44:560
121650420irq/29-eth0_g0_13-21kworker/0:122:52:570
121650420irq/29-eth0_g0_121ksoftirqd/121:47:120
121650420irq/29-eth0_g0_0-21swapper/019:09:330
41250410irq/22-fsldma-c121ksoftirqd/119:29:271
121750410irq/30-eth0_g0_0-21swapper/122:40:501
121650410irq/29-eth0_g0_31ksoftirqd/021:11:510
121650410irq/29-eth0_g0_31ksoftirqd/019:59:300
1664199402cyclictest23539-21unixbench_singl19:34:361
121750400irq/30-eth0_g0_31ksoftirqd/022:37:260
121650400irq/29-eth0_g0_31ksoftirqd/022:04:310
121650400irq/29-eth0_g0_31ksoftirqd/019:39:350
121650400irq/29-eth0_g0_31ksoftirqd/000:28:260
121650400irq/29-eth0_g0_13-21kworker/0:123:25:130
121650400irq/29-eth0_g0_13-21kworker/0:122:58:150
121650400irq/29-eth0_g0_121ksoftirqd/123:51:200
121650400irq/29-eth0_g0_121ksoftirqd/119:39:281
121650400irq/29-eth0_g0_0-21swapper/000:09:300
121400ksoftirqd/1181362sleep021:25:320
121400ksoftirqd/1121750irq/30-eth0_g0_22:44:400
121400ksoftirqd/1121750irq/30-eth0_g0_00:05:050
1664199391cyclictest12479-21unixbench_multi23:14:361
1664199391cyclictest10212sleep122:29:281
121750390irq/30-eth0_g0_121ksoftirqd/123:54:161
121750390irq/30-eth0_g0_121ksoftirqd/100:31:581
121750390irq/30-eth0_g0_0-21swapper/123:27:441
121650390irq/29-eth0_g0_1964-21runrttasks20:49:380
121650390irq/29-eth0_g0_13-21kworker/0:122:27:440
121650390irq/29-eth0_g0_13-21kworker/0:121:39:070
121650390irq/29-eth0_g0_13-21kworker/0:100:34:500
121650390irq/29-eth0_g0_13-21kworker/0:100:33:310
121650390irq/29-eth0_g0_13-21kworker/0:100:17:350
121390ksoftirqd/1121750irq/30-eth0_g0_23:01:120
121390ksoftirqd/1121750irq/30-eth0_g0_22:19:550
121390ksoftirqd/1121750irq/30-eth0_g0_22:10:560
121390ksoftirqd/1121750irq/30-eth0_g0_22:10:560
121390ksoftirqd/1121750irq/30-eth0_g0_22:03:110
121390ksoftirqd/1121750irq/30-eth0_g0_20:40:090
121390ksoftirqd/1121750irq/30-eth0_g0_20:15:400
121390ksoftirqd/1121750irq/30-eth0_g0_19:44:391
121390ksoftirqd/1121650irq/29-eth0_g0_22:14:201
121390ksoftirqd/1121650irq/29-eth0_g0_21:01:171
121390ksoftirqd/1121650irq/29-eth0_g0_20:15:561
1664199381cyclictest13554-21diskmemload23:39:361
121750380irq/30-eth0_g0_13-21kworker/0:123:04:540
121750380irq/30-eth0_g0_1219-21kworker/1:223:30:471
121750380irq/30-eth0_g0_1219-21kworker/1:221:48:481
121650380irq/29-eth0_g0_16881-21sed23:34:270
121650380irq/29-eth0_g0_1664099cyclictest23:10:240
121650380irq/29-eth0_g0_13-21kworker/0:123:32:230
121650380irq/29-eth0_g0_13-21kworker/0:121:17:290
121650380irq/29-eth0_g0_121ksoftirqd/123:51:411
121380ksoftirqd/1121750irq/30-eth0_g0_19:28:330
121380ksoftirqd/1121750irq/30-eth0_g0_19:28:330
121380ksoftirqd/1121650irq/29-eth0_g0_21:43:161
1664199372cyclictest31785-21grep20:09:331
1664199372cyclictest13119-21grep21:04:381
1664199371cyclictest4522-21grep20:29:361
1664199371cyclictest3273-21grep20:24:361
121750370irq/30-eth0_g0_1964-21runrttasks19:45:130
121750370irq/30-eth0_g0_1219-21kworker/1:221:21:421
121650370irq/29-eth0_g0_31395-21/usr/sbin/munin20:09:290
121650370irq/29-eth0_g0_31ksoftirqd/000:02:100
121650370irq/29-eth0_g0_2609-21taskset20:24:160
121650370irq/29-eth0_g0_1964-21runrttasks20:27:440
121650370irq/29-eth0_g0_13127-21grep21:04:380
121650370irq/29-eth0_g0_13-21kworker/0:122:15:580
121650370irq/29-eth0_g0_13-21kworker/0:121:49:310
1664199362cyclictest9334-21cat20:49:351
1664199361cyclictest28130-21seq19:54:331
1664199361cyclictest27428-21seq19:51:511
121750360irq/30-eth0_g0_1219-21kworker/1:222:38:281
121750360irq/30-eth0_g0_1219-21kworker/1:200:14:331
121650360irq/29-eth0_g0_7539-21egrep20:44:270
121650360irq/29-eth0_g0_23304-21processes19:34:340
121650360irq/29-eth0_g0_22263-21grep19:29:350
121650360irq/29-eth0_g0_1964-21runrttasks20:33:430
121650360irq/29-eth0_g0_1964-21runrttasks19:49:330
1664199351cyclictest30551-21awk20:04:311
1664199351cyclictest19412sleep120:19:331
1664199351cyclictest17035-21sort19:09:301
121650350irq/29-eth0_g0_30802-21unixbench_multi20:04:350
121650350irq/29-eth0_g0_1964-21runrttasks20:54:500
121650350irq/29-eth0_g0_1964-21runrttasks20:35:590
121650350irq/29-eth0_g0_19566-21grep19:19:310
121750340irq/30-eth0_g0_10227-21wc20:54:311
121650340irq/29-eth0_g0_28035-21chrt19:54:310
121650340irq/29-eth0_g0_20449-21df19:24:261
121650340irq/29-eth0_g0_20449-21df19:24:261
121650340irq/29-eth0_g0_18280-21chrt19:14:310
121650340irq/29-eth0_g0_1664199cyclictest20:44:171
1664199331cyclictest7602-21df20:44:271
1664199331cyclictest20337-21sort19:24:171
1664199312cyclictest5381-21memory20:34:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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