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2026-08-08 - 13:10

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Sat Aug 08, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211020ksoftirqd/1121750irq/30-eth0_g0_20:34:111
1211020ksoftirqd/1121750irq/30-eth0_g0_20:34:111
121910ksoftirqd/1121750irq/30-eth0_g0_00:21:301
121800ksoftirqd/1121750irq/30-eth0_g0_23:27:201
121750ksoftirqd/1121650irq/29-eth0_g0_21:06:571
241192690sleep1121750irq/30-eth0_g0_22:26:571
121660ksoftirqd/1131832sleep019:28:000
324622650sleep1121750irq/30-eth0_g0_22:59:401
200622650sleep1121750irq/30-eth0_g0_19:57:101
121580ksoftirqd/1121750irq/30-eth0_g0_22:37:371
301182570sleep0121650irq/29-eth0_g0_22:50:550
121570ksoftirqd/1121650irq/29-eth0_g0_22:05:081
121560ksoftirqd/1121750irq/30-eth0_g0_23:17:091
86502550sleep0121650irq/29-eth0_g0_21:22:140
121540ksoftirqd/1121750irq/30-eth0_g0_23:26:561
121530ksoftirqd/1121650irq/29-eth0_g0_22:16:010
121530ksoftirqd/1121650irq/29-eth0_g0_19:44:331
121520ksoftirqd/1121750irq/30-eth0_g0_23:36:211
121520ksoftirqd/1121750irq/30-eth0_g0_22:52:491
121520ksoftirqd/1121750irq/30-eth0_g0_22:32:161
121520ksoftirqd/1121750irq/30-eth0_g0_21:58:091
121510ksoftirqd/1121650irq/29-eth0_g0_22:42:461
121500ksoftirqd/1121750irq/30-eth0_g0_23:05:561
121500ksoftirqd/1121650irq/29-eth0_g0_19:52:151
121490ksoftirqd/1121750irq/30-eth0_g0_21:31:431
121490ksoftirqd/1121750irq/30-eth0_g0_21:31:431
121490ksoftirqd/1121650irq/29-eth0_g0_19:12:140
121480ksoftirqd/1121750irq/30-eth0_g0_23:43:201
121480ksoftirqd/1121750irq/30-eth0_g0_21:51:291
121480ksoftirqd/1121750irq/30-eth0_g0_21:36:331
121480ksoftirqd/1121750irq/30-eth0_g0_00:12:090
121480ksoftirqd/1121650irq/29-eth0_g0_23:39:090
121480ksoftirqd/1121650irq/29-eth0_g0_23:14:470
121480ksoftirqd/1121650irq/29-eth0_g0_21:02:181
121470ksoftirqd/1121750irq/30-eth0_g0_21:56:370
231532460sleep1121650irq/29-eth0_g0_00:32:251
121650460irq/29-eth0_g0_6920-21chrt19:02:160
121460ksoftirqd/1121750irq/30-eth0_g0_23:08:360
121460ksoftirqd/1121750irq/30-eth0_g0_00:00:141
121460ksoftirqd/1121650irq/29-eth0_g0_21:53:101
121450ksoftirqd/1121750irq/30-eth0_g0_23:51:191
57422440sleep0121650irq/29-eth0_g0_21:11:580
286852440sleep0121750irq/30-eth0_g0_22:43:310
121750440irq/30-eth0_g0_1219-21kworker/1:200:29:171
121750440irq/30-eth0_g0_1219-21kworker/1:200:03:541
121650440irq/29-eth0_g0_121ksoftirqd/122:31:281
121440ksoftirqd/1121650irq/29-eth0_g0_23:15:071
121750430irq/30-eth0_g0_1219-21kworker/1:221:18:531
121650430irq/29-eth0_g0_13-21kworker/0:121:31:070
121650430irq/29-eth0_g0_13-21kworker/0:121:31:070
121650430irq/29-eth0_g0_121ksoftirqd/122:32:060
121750420irq/30-eth0_g0_31ksoftirqd/023:27:080
121750420irq/30-eth0_g0_1219-21kworker/1:221:45:461
121750420irq/30-eth0_g0_1219-21kworker/1:221:41:451
121750420irq/30-eth0_g0_1219-21kworker/1:200:25:561
121650420irq/29-eth0_g0_31ksoftirqd/000:33:200
121420ksoftirqd/1121650irq/29-eth0_g0_00:07:221
121650410irq/29-eth0_g0_13-21kworker/0:123:49:590
121650410irq/29-eth0_g0_13-21kworker/0:123:42:090
121650410irq/29-eth0_g0_13-21kworker/0:121:37:150
121650410irq/29-eth0_g0_11203-21sendmail_mailqu21:32:170
121410ksoftirqd/1121750irq/30-eth0_g0_22:52:220
121750400irq/30-eth0_g0_1219-21kworker/1:221:14:071
121750400irq/30-eth0_g0_121ksoftirqd/122:15:331
121650400irq/29-eth0_g0_61302sleep023:24:080
121650400irq/29-eth0_g0_13-21kworker/0:123:35:310
121650400irq/29-eth0_g0_13-21kworker/0:123:18:320
121650400irq/29-eth0_g0_13-21kworker/0:123:03:050
121650400irq/29-eth0_g0_13-21kworker/0:122:39:050
121650400irq/29-eth0_g0_13-21kworker/0:122:10:420
121650400irq/29-eth0_g0_13-21kworker/0:121:45:010
121650400irq/29-eth0_g0_13-21kworker/0:100:22:130
121650400irq/29-eth0_g0_13-21kworker/0:100:02:330
121650400irq/29-eth0_g0_121ksoftirqd/100:18:000
121400ksoftirqd/16908-21seq19:02:161
738699391cyclictest30034-21ps20:37:141
738699391cyclictest23956-21processes20:12:161
121650390irq/29-eth0_g0_31ksoftirqd/022:58:040
121650390irq/29-eth0_g0_29575-21/usr/sbin/munin20:37:150
121650390irq/29-eth0_g0_1964-21runrttasks21:57:170
121650390irq/29-eth0_g0_13-21kworker/0:122:17:570
121650390irq/29-eth0_g0_13-21kworker/0:100:28:160
121650390irq/29-eth0_g0_13-21kworker/0:100:07:410
121650390irq/29-eth0_g0_0-21swapper/019:52:100
121750380irq/30-eth0_g0_738699cyclictest23:53:441
121750380irq/30-eth0_g0_738699cyclictest23:53:441
121750380irq/30-eth0_g0_13244-21taskset19:28:421
121750380irq/30-eth0_g0_1219-21kworker/1:223:39:161
121750380irq/30-eth0_g0_1219-21kworker/1:223:09:411
121750380irq/30-eth0_g0_1219-21kworker/1:221:23:021
121750380irq/30-eth0_g0_1219-21kworker/1:200:16:041
121750380irq/30-eth0_g0_121ksoftirqd/122:08:331
121650380irq/29-eth0_g0_31ksoftirqd/021:20:150
121650380irq/29-eth0_g0_1964-21runrttasks21:47:070
121650380irq/29-eth0_g0_13-21kworker/0:123:59:270
121650380irq/29-eth0_g0_13-21kworker/0:122:27:010
121650380irq/29-eth0_g0_13-21kworker/0:122:22:160
121650380irq/29-eth0_g0_13-21kworker/0:122:02:340
121650380irq/29-eth0_g0_13-21kworker/0:121:09:080
121650380irq/29-eth0_g0_0-21swapper/020:07:120
121650380irq/29-eth0_g0_0-21swapper/019:51:560
738699372cyclictest26126-21irqstats20:22:101
738699372cyclictest22146-21/usr/sbin/munin22:17:161
738699372cyclictest15977-21munin-run19:41:561
121750370irq/30-eth0_g0_121ksoftirqd/122:49:021
121650370irq/29-eth0_g0_31ksoftirqd/019:17:170
121650370irq/29-eth0_g0_27802-21unixbench_singl20:27:180
121650370irq/29-eth0_g0_1964-21runrttasks20:16:550
121650370irq/29-eth0_g0_1964-21runrttasks19:57:540
121650370irq/29-eth0_g0_13-21kworker/0:123:52:120
121650370irq/29-eth0_g0_13-21kworker/0:123:52:120
7386993630cyclictest21026-21cpu20:02:081
738699362cyclictest8035-21awk19:07:151
738699362cyclictest2109-21lldpd20:57:131
738699361cyclictest22604-21seq20:07:131
121650360irq/29-eth0_g0_2767-21grep20:57:180
121650360irq/29-eth0_g0_1964-21runrttasks19:41:380
121650360irq/29-eth0_g0_1964-21runrttasks19:24:220
121650360irq/29-eth0_g0_13849-21irqstats19:32:100
7386993520cyclictest10339-21/usr/sbin/munin19:17:131
738699352cyclictest11562-21ntp_states19:22:141
738699351cyclictest31128-21sort20:42:111
738699351cyclictest27431-21sed20:27:121
738699351cyclictest25856-21cat20:21:571
738699351cyclictest13879-21cat19:32:101
738699351cyclictest1361-21find20:52:161
738699351cyclictest0-21swapper/119:47:071
738699351cyclictest0-21swapper/119:16:571
121650350irq/29-eth0_g0_1964-21runrttasks21:06:030
121650350irq/29-eth0_g0_1964-21runrttasks20:35:040
121650350irq/29-eth0_g0_1964-21runrttasks20:35:040
121650350irq/29-eth0_g0_1345-21processes20:52:150
121650350irq/29-eth0_g0_0-21swapper/019:07:170
121650340irq/29-eth0_g0_31040-21irqstats20:42:100
121650340irq/29-eth0_g0_25046-21ntpdc20:17:130
121650340irq/29-eth0_g0_16618-21awk19:42:170
121650340irq/29-eth0_g0_0-21swapper/020:47:070
121650340irq/29-eth0_g0_0-21swapper/020:22:090
738699331cyclictest324072sleep120:47:121
121650330irq/29-eth0_g0_21357-21ntp_kernel_err20:02:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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