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2026-06-20 - 17:32

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 Sat Jun 20, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121990ksoftirqd/1121750irq/30-eth0_g0_09:10:561
121990ksoftirqd/1121750irq/30-eth0_g0_09:10:561
121960ksoftirqd/1121750irq/30-eth0_g0_12:25:331
121960ksoftirqd/1121750irq/30-eth0_g0_12:07:450
244682800sleep0121650irq/29-eth0_g0_10:23:190
121640ksoftirqd/1121650irq/29-eth0_g0_12:34:131
121570ksoftirqd/1121750irq/30-eth0_g0_09:56:421
121560ksoftirqd/1121750irq/30-eth0_g0_08:09:060
121530ksoftirqd/1121750irq/30-eth0_g0_07:09:111
121530ksoftirqd/1121750irq/30-eth0_g0_07:09:111
101512520sleep1121750irq/30-eth0_g0_11:34:361
121510ksoftirqd/1906499cyclictest10:49:151
121510ksoftirqd/1121750irq/30-eth0_g0_09:29:301
225902500chrt121750irq/30-eth0_g0_08:03:540
121750500irq/30-eth0_g0_906499cyclictest10:48:151
121650500irq/29-eth0_g0_1964-21runrttasks11:31:360
121500ksoftirqd/1121650irq/29-eth0_g0_07:14:090
906499492cyclictest6017-21missed_timers11:19:091
906499491cyclictest18430-21unixbench_singl07:44:151
121750490irq/30-eth0_g0_906499cyclictest10:30:231
906499481cyclictest28272-21unixbench_singl08:24:171
121750480irq/30-eth0_g0_906499cyclictest12:14:111
121650480irq/29-eth0_g0_906499cyclictest12:05:381
121650480irq/29-eth0_g0_1964-21runrttasks12:19:560
121480ksoftirqd/1121750irq/30-eth0_g0_11:40:201
121480ksoftirqd/1121750irq/30-eth0_g0_10:03:301
906499479cyclictest11608-21/usr/sbin/munin07:19:071
906499471cyclictest29221-21runrttasks10:41:271
121470ksoftirqd/1121750irq/30-eth0_g0_11:45:241
9064994614cyclictest11460-21runrttasks07:18:161
121750460irq/30-eth0_g0_906499cyclictest10:14:041
121750460irq/30-eth0_g0_906499cyclictest10:07:071
121750460irq/30-eth0_g0_906499cyclictest10:07:071
121750460irq/30-eth0_g0_906499cyclictest09:15:201
121750460irq/30-eth0_g0_906499cyclictest09:15:201
121750460irq/30-eth0_g0_18636-21runrttasks12:09:141
121460ksoftirqd/1121750irq/30-eth0_g0_12:37:170
121460ksoftirqd/1121650irq/29-eth0_g0_07:52:431
906499456cyclictest20564-21netstat07:54:091
9064994516cyclictest0-21swapper/107:26:041
9064994515cyclictest9469-21runrttasks09:20:051
9064994515cyclictest23439-21runrttasks08:04:501
121750450irq/30-eth0_g0_906499cyclictest11:26:481
121750450irq/30-eth0_g0_121ksoftirqd/111:29:461
121650450irq/29-eth0_g0_8156-21seq07:04:080
121650450irq/29-eth0_g0_8156-21seq07:04:080
121650450irq/29-eth0_g0_1964-21runrttasks09:46:230
121650450irq/29-eth0_g0_13-21kworker/0:109:14:220
121650450irq/29-eth0_g0_13-21kworker/0:109:14:220
121450ksoftirqd/1121750irq/30-eth0_g0_12:23:031
121450ksoftirqd/1121750irq/30-eth0_g0_11:07:101
121450ksoftirqd/1121650irq/29-eth0_g0_09:39:261
9064994430cyclictest5199-21vmstat11:14:141
9064994419cyclictest5869-21runrttasks09:06:091
9064994417cyclictest32582-21ls10:54:151
9064994417cyclictest32582-21ls10:54:151
906499441cyclictest121750irq/30-eth0_g0_08:44:151
121750440irq/30-eth0_g0_906499cyclictest11:57:101
121750440irq/30-eth0_g0_906499cyclictest10:11:051
121750440irq/30-eth0_g0_906499cyclictest09:46:491
121750440irq/30-eth0_g0_121ksoftirqd/110:37:491
121650440irq/29-eth0_g0_906499cyclictest11:09:291
121650440irq/29-eth0_g0_906499cyclictest08:29:051
121650440irq/29-eth0_g0_1964-21runrttasks08:40:590
121650440irq/29-eth0_g0_15292-21/usr/sbin/munin07:34:120
121650440irq/29-eth0_g0_13-21kworker/0:110:02:220
121650440irq/29-eth0_g0_10277-21awk09:24:110
121440ksoftirqd/1906499cyclictest08:09:101
121440ksoftirqd/1121750irq/30-eth0_g0_09:43:100
9064994329cyclictest24092-21unixbench_singl10:19:161
9064994320cyclictest31030-21runrttasks08:37:251
9064994315cyclictest21597-21/usr/sbin/munin07:59:081
121750430irq/30-eth0_g0_906499cyclictest10:26:381
121750430irq/30-eth0_g0_121ksoftirqd/111:01:191
121650430irq/29-eth0_g0_906499cyclictest08:14:131
121650430irq/29-eth0_g0_13-21kworker/0:112:29:110
121650430irq/29-eth0_g0_13-21kworker/0:112:00:360
121650430irq/29-eth0_g0_13-21kworker/0:111:40:370
121650430irq/29-eth0_g0_13-21kworker/0:110:34:160
121650430irq/29-eth0_g0_13-21kworker/0:110:14:070
121650430irq/29-eth0_g0_12577-21sh09:34:070
121650430irq/29-eth0_g0_0-21swapper/010:12:430
121430ksoftirqd/1906499cyclictest08:59:051
121430ksoftirqd/1121750irq/30-eth0_g0_09:52:341
9064994229cyclictest13437-21netstat11:49:101
9064994229cyclictest13437-21netstat11:49:101
906499422cyclictest31655-21ntp_states08:39:121
9064994216cyclictest15014-21runrttasks07:31:471
9064994216cyclictest10878-21runrttasks09:27:111
9064994215cyclictest17374-21runrttasks07:40:411
9064994214cyclictest26967-21grep08:19:141
121750420irq/30-eth0_g0_906499cyclictest12:29:161
121750420irq/30-eth0_g0_906499cyclictest09:35:541
121750420irq/30-eth0_g0_28230-21unixbench_multi08:24:160
121650420irq/29-eth0_g0_1964-21runrttasks12:24:520
121650420irq/29-eth0_g0_1964-21runrttasks09:31:030
121650420irq/29-eth0_g0_13-21kworker/0:112:10:380
121650420irq/29-eth0_g0_13-21kworker/0:111:07:510
121650420irq/29-eth0_g0_13-21kworker/0:110:58:590
121650420irq/29-eth0_g0_13-21kworker/0:110:48:160
121650420irq/29-eth0_g0_13-21kworker/0:110:05:060
121650420irq/29-eth0_g0_13-21kworker/0:110:05:060
121650420irq/29-eth0_g0_13-21kworker/0:109:55:340
906499414cyclictest15482-21/usr/sbin/munin07:34:081
9064994117cyclictest2503-21runrttasks08:53:551
906499411cyclictest21422sleep108:50:371
121750410irq/30-eth0_g0_906499cyclictest12:00:171
121750410irq/30-eth0_g0_1964-21runrttasks09:20:130
121650410irq/29-eth0_g0_13-21kworker/0:111:47:120
121650410irq/29-eth0_g0_13-21kworker/0:110:49:570
121650410irq/29-eth0_g0_13-21kworker/0:110:32:270
121650400irq/29-eth0_g0_20888-21unixbench_singl07:54:150
121650400irq/29-eth0_g0_13-21kworker/0:112:15:290
121650400irq/29-eth0_g0_13-21kworker/0:111:24:510
121650400irq/29-eth0_g0_13-21kworker/0:111:16:080
121650400irq/29-eth0_g0_13-21kworker/0:111:09:180
121650400irq/29-eth0_g0_13-21kworker/0:110:54:190
121650400irq/29-eth0_g0_13-21kworker/0:110:54:190
121650400irq/29-eth0_g0_13-21kworker/0:110:41:110
121650400irq/29-eth0_g0_13-21kworker/0:110:25:020
121650400irq/29-eth0_g0_13-21kworker/0:109:49:210
121650400irq/29-eth0_g0_13-21kworker/0:109:09:400
121650400irq/29-eth0_g0_13-21kworker/0:109:09:400
121400ksoftirqd/1121750irq/30-eth0_g0_07:49:130
121650390irq/29-eth0_g0_6495-21taskset11:19:580
121650390irq/29-eth0_g0_13-21kworker/0:111:58:410
121650390irq/29-eth0_g0_13-21kworker/0:111:52:130
121650390irq/29-eth0_g0_13-21kworker/0:111:52:130
121750380irq/30-eth0_g0_8456-21find07:04:131
121750380irq/30-eth0_g0_8456-21find07:04:131
121750380irq/30-eth0_g0_1964-21runrttasks08:15:580
121750380irq/30-eth0_g0_14744-21unixbench_singl07:29:150
121650380irq/29-eth0_g0_16710-21if_err_eth007:39:070
121650360irq/29-eth0_g0_1964-21runrttasks11:37:330
121650360irq/29-eth0_g0_1896-21unixbench_multi08:49:140
121750350irq/30-eth0_g0_12143-21fgrep07:19:130
121750350irq/30-eth0_g0_0-21swapper/008:04:110
121650350irq/29-eth0_g0_9847-21unixbench_singl07:09:160
121650350irq/29-eth0_g0_9847-21unixbench_singl07:09:160
121650350irq/29-eth0_g0_1964-21runrttasks08:47:440
121650350irq/29-eth0_g0_1964-21runrttasks08:29:090
121650350irq/29-eth0_g0_0-21swapper/008:54:120
121650350irq/29-eth0_g0_0-21swapper/007:44:050
121750340irq/30-eth0_g0_26665-21ls08:19:080
121650340irq/29-eth0_g0_30680-21unixbench_multi08:34:160
121650340irq/29-eth0_g0_0-21swapper/008:59:080
121650330irq/29-eth0_g0_5129-21df_inode09:04:060
121650330irq/29-eth0_g0_0-21swapper/007:24:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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