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2026-06-03 - 20:58

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 Wed Jun 03, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1016721690sleep1121650irq/29-eth0_g0_09:14:211
319021550sleep1121650irq/29-eth0_g0_10:56:061
2789421180sleep0121750irq/30-eth0_g0_12:38:320
121900ksoftirqd/1121750irq/30-eth0_g0_07:48:501
121850ksoftirqd/1121750irq/30-eth0_g0_07:34:511
121850ksoftirqd/1121750irq/30-eth0_g0_07:34:511
121840ksoftirqd/1121750irq/30-eth0_g0_07:49:551
214022730chrt121750irq/30-eth0_g0_12:09:561
127052700sleep1121750irq/30-eth0_g0_11:34:521
212072680sleep1121750irq/30-eth0_g0_09:59:331
85722560chrt121750irq/30-eth0_g0_09:05:021
121520ksoftirqd/1121750irq/30-eth0_g0_10:25:411
121520ksoftirqd/1121650irq/29-eth0_g0_11:54:541
121510ksoftirqd/1121750irq/30-eth0_g0_10:32:521
121510ksoftirqd/1121650irq/29-eth0_g0_11:24:050
234222490sleep0121750irq/30-eth0_g0_10:06:530
121490ksoftirqd/1121750irq/30-eth0_g0_10:20:121
121470ksoftirqd/1121750irq/30-eth0_g0_11:46:211
121470ksoftirqd/1121650irq/29-eth0_g0_09:31:500
121460ksoftirqd/1121750irq/30-eth0_g0_10:52:231
121460ksoftirqd/1121750irq/30-eth0_g0_09:50:581
241372450sleep1121750irq/30-eth0_g0_12:22:361
121450ksoftirqd/1121750irq/30-eth0_g0_11:11:451
121450ksoftirqd/1121750irq/30-eth0_g0_10:44:511
121450ksoftirqd/1121750irq/30-eth0_g0_09:43:111
118912450sleep0121750irq/30-eth0_g0_11:32:330
121750440irq/30-eth0_g0_1219-21kworker/1:212:33:551
121650440irq/29-eth0_g0_31ksoftirqd/011:52:060
121650440irq/29-eth0_g0_22318-21open_files07:49:520
121650440irq/29-eth0_g0_13-21kworker/0:110:56:060
121650440irq/29-eth0_g0_121ksoftirqd/110:01:190
121650440irq/29-eth0_g0_121ksoftirqd/109:29:491
121440ksoftirqd/1121650irq/29-eth0_g0_12:17:271
273762430sleep1121750irq/30-eth0_g0_12:34:521
121750430irq/30-eth0_g0_1219-21kworker/1:211:19:041
121750430irq/30-eth0_g0_1219-21kworker/1:210:13:521
121650430irq/29-eth0_g0_13-21kworker/0:111:48:530
121650430irq/29-eth0_g0_11088-21if_eth007:04:460
121430ksoftirqd/1121750irq/30-eth0_g0_11:25:210
121430ksoftirqd/1121750irq/30-eth0_g0_07:22:090
121750420irq/30-eth0_g0_1219-21kworker/1:210:06:141
121750420irq/30-eth0_g0_1219-21kworker/1:209:25:501
121750420irq/30-eth0_g0_1219-21kworker/1:209:22:071
121650420irq/29-eth0_g0_13-21kworker/0:109:47:400
121650420irq/29-eth0_g0_121ksoftirqd/108:14:540
121420ksoftirqd/1121650irq/29-eth0_g0_10:35:351
121420ksoftirqd/1121650irq/29-eth0_g0_08:29:571
121750410irq/30-eth0_g0_19689-21if_err_eth012:04:441
12035994127cyclictest1964-21runrttasks09:02:101
121410ksoftirqd/1121650irq/29-eth0_g0_12:02:061
214912400sleep0121750irq/30-eth0_g0_12:10:150
121750400irq/30-eth0_g0_1219-21kworker/1:209:48:221
121650400irq/29-eth0_g0_17907-21taskset11:56:150
121650400irq/29-eth0_g0_13-21kworker/0:110:29:040
121650400irq/29-eth0_g0_13-21kworker/0:109:15:120
1203599402cyclictest24715-21ntp_kernel_err07:59:481
121400ksoftirqd/1121650irq/29-eth0_g0_12:27:220
121750390irq/30-eth0_g0_1219-21kworker/1:212:27:011
121750390irq/30-eth0_g0_121ksoftirqd/110:00:061
121750390irq/30-eth0_g0_10889-21/usr/sbin/munin07:04:561
121750390irq/30-eth0_g0_0-21swapper/110:44:311
121750390irq/30-eth0_g0_0-21swapper/107:43:011
121650390irq/29-eth0_g0_31ksoftirqd/009:54:500
121650390irq/29-eth0_g0_13-21kworker/0:111:01:300
121650390irq/29-eth0_g0_13-21kworker/0:110:53:500
121650390irq/29-eth0_g0_13-21kworker/0:109:23:200
121650390irq/29-eth0_g0_1203499cyclictest09:35:260
121650390irq/29-eth0_g0_1203499cyclictest09:35:260
121650390irq/29-eth0_g0_121ksoftirqd/109:51:390
121650390irq/29-eth0_g0_0-21swapper/012:19:530
121390ksoftirqd/1121750irq/30-eth0_g0_09:10:460
121390ksoftirqd/1121750irq/30-eth0_g0_08:46:510
121750380irq/30-eth0_g0_1219-21kworker/1:210:59:471
121750380irq/30-eth0_g0_1219-21kworker/1:209:34:431
121750380irq/30-eth0_g0_1219-21kworker/1:209:34:431
121750380irq/30-eth0_g0_1203499cyclictest11:12:470
121750380irq/30-eth0_g0_121ksoftirqd/111:31:281
121650380irq/29-eth0_g0_31ksoftirqd/011:14:460
121650380irq/29-eth0_g0_13-21kworker/0:112:14:540
121650380irq/29-eth0_g0_13-21kworker/0:110:48:200
121650380irq/29-eth0_g0_13-21kworker/0:110:34:580
121650380irq/29-eth0_g0_13-21kworker/0:109:25:560
121650380irq/29-eth0_g0_121ksoftirqd/111:07:300
121650380irq/29-eth0_g0_121ksoftirqd/111:07:300
121650380irq/29-eth0_g0_107642sleep111:28:421
121650380irq/29-eth0_g0_0-21swapper/010:39:520
121380ksoftirqd/1121750irq/30-eth0_g0_10:33:100
121380ksoftirqd/1121750irq/30-eth0_g0_07:44:270
121750370irq/30-eth0_g0_31ksoftirqd/010:21:020
121750370irq/30-eth0_g0_26567-21taskset08:08:021
121750370irq/30-eth0_g0_1219-21kworker/1:211:50:361
121750370irq/30-eth0_g0_1219-21kworker/1:211:39:361
121750370irq/30-eth0_g0_1219-21kworker/1:211:39:361
121750370irq/30-eth0_g0_1219-21kworker/1:210:19:321
121750370irq/30-eth0_g0_1219-21kworker/1:209:17:011
121650370irq/29-eth0_g0_26705-21latency_hist08:09:330
121650370irq/29-eth0_g0_25345-21ntp_kernel_err10:14:500
121650370irq/29-eth0_g0_23788-21unixbench_singl07:54:550
121650370irq/29-eth0_g0_1964-21runrttasks08:49:340
121650370irq/29-eth0_g0_1964-21runrttasks08:49:340
121650370irq/29-eth0_g0_13991-21unixbench_multi07:14:560
121650370irq/29-eth0_g0_13-21kworker/0:112:31:040
121650370irq/29-eth0_g0_13-21kworker/0:112:00:200
121650370irq/29-eth0_g0_13-21kworker/0:111:40:570
121650370irq/29-eth0_g0_13-21kworker/0:111:40:570
121650370irq/29-eth0_g0_13-21kworker/0:109:41:110
1203599371cyclictest6572-21grep08:59:331
1203599371cyclictest16448-21grep07:24:561
121370ksoftirqd/1121750irq/30-eth0_g0_11:35:030
121750360irq/30-eth0_g0_1219-21kworker/1:211:22:211
121650360irq/29-eth0_g0_7150-21sendmail_mailst08:59:530
121650360irq/29-eth0_g0_31ksoftirqd/012:05:350
121650360irq/29-eth0_g0_29866-21unixbench_multi08:19:560
121650360irq/29-eth0_g0_27447-21grep08:09:550
121650360irq/29-eth0_g0_1964-21runrttasks08:28:090
121650360irq/29-eth0_g0_16165-21ntp_kernel_err07:24:510
121650360irq/29-eth0_g0_13-21kworker/0:110:09:360
1203599361cyclictest840-21ntpq08:34:511
1203599361cyclictest5103-21cat11:04:481
1203599361cyclictest5103-21cat11:04:481
1203599361cyclictest29758-21ps08:19:541
1203599361cyclictest28016-21chrt08:14:441
1203599361cyclictest2398-21unixbench_singl08:39:541
1203599361cyclictest12393-21cat07:09:491
121650350irq/29-eth0_g0_32362-21grep08:29:570
121650350irq/29-eth0_g0_1964-21runrttasks08:00:220
121650350irq/29-eth0_g0_1964-21runrttasks07:45:000
121650350irq/29-eth0_g0_1964-21runrttasks07:31:250
1203599351cyclictest3597-21tail08:44:551
1203599351cyclictest30840-21ntpdc08:24:501
1203599351cyclictest17657-21grep07:29:551
121350ksoftirqd/1121650irq/29-eth0_g0_07:56:471
121650340irq/29-eth0_g0_687-21irqstats08:34:480
121650340irq/29-eth0_g0_12655-21taskset07:09:540
12035993428cyclictest1964-21runrttasks07:19:041
1203599341cyclictest4440-21cat08:49:491
1203599341cyclictest4440-21cat08:49:491
121650330irq/29-eth0_g0_6066-21unixbench_singl08:54:550
121650330irq/29-eth0_g0_1964-21runrttasks07:39:200
121650330irq/29-eth0_g0_1964-21runrttasks07:39:200
121650330irq/29-eth0_g0_1711-21cpu08:39:440
1203599331cyclictest27427-21grep08:09:551
121650320irq/29-eth0_g0_7828-21/usr/sbin/munin09:04:440
12035993216cyclictest15097-21fgrep07:19:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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