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2026-03-22 - 23:53

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 all highest latencies:
System rack3slot5s.osadl.org (updated Sun Mar 22, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1755721420sleep1121650irq/29-eth0_g0_10:21:161
1831221210sleep0121750irq/30-eth0_g0_12:37:470
121900ksoftirqd/1121750irq/30-eth0_g0_08:36:151
121900ksoftirqd/1121750irq/30-eth0_g0_08:36:151
121870ksoftirqd/1121650irq/29-eth0_g0_07:49:500
296292660sleep0121650irq/29-eth0_g0_11:09:540
296292660sleep0121650irq/29-eth0_g0_11:09:540
109712630sleep1121750irq/30-eth0_g0_09:54:471
109712630sleep1121750irq/30-eth0_g0_09:54:471
113542590sleep1121750irq/30-eth0_g0_07:44:461
121560ksoftirqd/136992chrt09:24:480
321522520sleep1121750irq/30-eth0_g0_11:20:151
149422520sleep1121750irq/30-eth0_g0_12:24:431
121520ksoftirqd/1121750irq/30-eth0_g0_09:27:191
121510ksoftirqd/1121750irq/30-eth0_g0_10:57:331
121500ksoftirqd/1121650irq/29-eth0_g0_10:36:500
121480ksoftirqd/1121750irq/30-eth0_g0_12:18:501
121480ksoftirqd/1121750irq/30-eth0_g0_12:18:501
121470ksoftirqd/1121750irq/30-eth0_g0_09:08:111
121470ksoftirqd/1121750irq/30-eth0_g0_09:08:111
121650460irq/29-eth0_g0_9288-21taskset11:59:510
121650460irq/29-eth0_g0_9288-21taskset11:59:510
226212450sleep0121650irq/29-eth0_g0_10:43:180
121450ksoftirqd/1121750irq/30-eth0_g0_11:43:071
121450ksoftirqd/1121750irq/30-eth0_g0_11:24:581
121450ksoftirqd/1121750irq/30-eth0_g0_10:42:451
121450ksoftirqd/1121750irq/30-eth0_g0_10:05:051
121450ksoftirqd/1121650irq/29-eth0_g0_09:51:201
121750440irq/30-eth0_g0_470-21kworker/1:109:20:561
121650440irq/29-eth0_g0_31ksoftirqd/011:30:260
121650440irq/29-eth0_g0_31ksoftirqd/011:30:260
121440ksoftirqd/1121750irq/30-eth0_g0_12:02:091
121440ksoftirqd/1121750irq/30-eth0_g0_12:02:091
121440ksoftirqd/1121650irq/29-eth0_g0_10:34:531
121440ksoftirqd/1121650irq/29-eth0_g0_09:30:570
121750430irq/30-eth0_g0_470-21kworker/1:109:35:131
121650430irq/29-eth0_g0_2029-21runrttasks10:05:510
121430ksoftirqd/1121650irq/29-eth0_g0_12:30:151
121430ksoftirqd/1121650irq/29-eth0_g0_11:15:431
121430ksoftirqd/1121650irq/29-eth0_g0_09:11:061
322042420sleep0121750irq/30-eth0_g0_11:20:510
121750420irq/30-eth0_g0_55622sleep111:44:511
121750420irq/30-eth0_g0_470-21kworker/1:111:55:051
121750420irq/30-eth0_g0_470-21kworker/1:110:11:531
121650420irq/29-eth0_g0_2054-21unixbench_singl07:04:510
121420ksoftirqd/1121750irq/30-eth0_g0_09:16:490
121420ksoftirqd/1121650irq/29-eth0_g0_11:07:021
250182410sleep1121750irq/30-eth0_g0_10:52:421
121750410irq/30-eth0_g0_470-21kworker/1:111:00:461
121750410irq/30-eth0_g0_470-21kworker/1:109:43:541
121750410irq/30-eth0_g0_31ksoftirqd/012:14:500
121750410irq/30-eth0_g0_31ksoftirqd/012:14:500
121650410irq/29-eth0_g0_31ksoftirqd/011:27:370
121650410irq/29-eth0_g0_13-21kworker/0:109:54:500
121650410irq/29-eth0_g0_13-21kworker/0:109:54:500
121410ksoftirqd/1121750irq/30-eth0_g0_12:23:490
121410ksoftirqd/1121650irq/29-eth0_g0_10:14:491
121410ksoftirqd/1121650irq/29-eth0_g0_09:47:381
250999401cyclictest5014-21grep07:19:321
121750400irq/30-eth0_g0_0-21swapper/109:15:581
121650400irq/29-eth0_g0_31ksoftirqd/012:11:460
121650400irq/29-eth0_g0_31ksoftirqd/012:08:370
121650400irq/29-eth0_g0_31ksoftirqd/009:48:410
121650400irq/29-eth0_g0_31ksoftirqd/009:35:380
121650400irq/29-eth0_g0_250899cyclictest10:28:380
121650400irq/29-eth0_g0_13-21kworker/0:112:32:390
121650400irq/29-eth0_g0_13-21kworker/0:111:49:110
121650400irq/29-eth0_g0_13-21kworker/0:111:38:410
121400ksoftirqd/1121750irq/30-eth0_g0_11:17:040
250999391cyclictest31887-21diskmemload12:37:471
250999391cyclictest14263-21grep07:54:541
121750390irq/30-eth0_g0_470-21kworker/1:112:09:521
121750390irq/30-eth0_g0_29612-21unixbench_singl11:09:531
121750390irq/30-eth0_g0_29612-21unixbench_singl11:09:531
121650390irq/29-eth0_g0_31ksoftirqd/012:24:450
121650390irq/29-eth0_g0_13-21kworker/0:110:54:540
121650390irq/29-eth0_g0_13-21kworker/0:110:29:420
121650390irq/29-eth0_g0_13-21kworker/0:110:16:550
121650390irq/29-eth0_g0_0-21swapper/008:04:490
121390ksoftirqd/1121750irq/30-eth0_g0_11:07:540
121390ksoftirqd/1121750irq/30-eth0_g0_10:19:530
121390ksoftirqd/1121750irq/30-eth0_g0_08:14:100
87792380sleep0121650irq/29-eth0_g0_07:34:420
250999381cyclictest31887-21diskmemload09:29:491
250999381cyclictest19176-21grep08:14:531
250999381cyclictest104752sleep107:39:521
121750380irq/30-eth0_g0_121ksoftirqd/111:53:431
121750380irq/30-eth0_g0_121ksoftirqd/111:31:341
121750380irq/30-eth0_g0_121ksoftirqd/111:31:341
121750380irq/30-eth0_g0_0-21swapper/111:34:501
121750380irq/30-eth0_g0_0-21swapper/110:49:111
121750380irq/30-eth0_g0_0-21swapper/110:01:201
121650380irq/29-eth0_g0_2029-21runrttasks11:53:330
121650380irq/29-eth0_g0_2029-21runrttasks08:22:500
121650380irq/29-eth0_g0_13-21kworker/0:111:40:470
121650380irq/29-eth0_g0_13-21kworker/0:109:50:260
121650380irq/29-eth0_g0_13-21kworker/0:109:43:090
121650380irq/29-eth0_g0_0-21swapper/011:56:130
121380ksoftirqd/1121750irq/30-eth0_g0_11:03:070
121380ksoftirqd/1121750irq/30-eth0_g0_10:02:100
121380ksoftirqd/1121650irq/29-eth0_g0_10:33:221
250999372cyclictest28213-21munin-run08:54:311
250999371cyclictest8183-21unixbench_singl07:29:521
250999371cyclictest225612sleep108:29:471
250999371cyclictest14358-21unixbench_singl12:19:521
121750370irq/30-eth0_g0_5868-21taskset07:20:551
121750370irq/30-eth0_g0_5868-21taskset07:20:551
121750370irq/30-eth0_g0_470-21kworker/1:112:05:351
121650370irq/29-eth0_g0_2718-21unixbench_singl09:19:520
121650370irq/29-eth0_g0_22867-21unixbench_singl08:29:520
121650370irq/29-eth0_g0_2256-21runrttasks07:06:451
121650370irq/29-eth0_g0_13-21kworker/0:110:50:150
121650370irq/29-eth0_g0_0-21swapper/010:11:290
121370ksoftirqd/1121650irq/29-eth0_g0_08:09:501
250999361cyclictest90052sleep107:34:451
250999361cyclictest172102sleep108:09:311
121650360irq/29-eth0_g0_5415-21netstat07:19:460
121650360irq/29-eth0_g0_5415-21netstat07:19:460
121650360irq/29-eth0_g0_4459-21unixbench_multi07:14:540
121650360irq/29-eth0_g0_27474-21taskset08:49:490
121650360irq/29-eth0_g0_2029-21runrttasks09:02:150
121650360irq/29-eth0_g0_2029-21runrttasks08:28:470
121650360irq/29-eth0_g0_2029-21runrttasks08:15:110
121650360irq/29-eth0_g0_2029-21runrttasks08:04:260
121650360irq/29-eth0_g0_13-21kworker/0:110:47:240
121650360irq/29-eth0_g0_13-21kworker/0:109:13:290
121650360irq/29-eth0_g0_10613-21unixbench_singl07:39:530
250999352cyclictest0-21swapper/108:59:451
250999352cyclictest0-21swapper/108:19:521
250999351cyclictest24790-21taskset08:39:431
250999351cyclictest18562-21unixbench_multi10:24:511
250999351cyclictest0-21swapper/108:44:471
250999351cyclictest0-21swapper/108:02:421
121650350irq/29-eth0_g0_24107-21unixbench_singl08:34:550
121650350irq/29-eth0_g0_24107-21unixbench_singl08:34:550
121650350irq/29-eth0_g0_2152-21snmpd07:57:040
121650350irq/29-eth0_g0_2029-21runrttasks08:58:080
121650350irq/29-eth0_g0_2029-21runrttasks07:29:310
121650350irq/29-eth0_g0_2029-21runrttasks07:12:030
121650350irq/29-eth0_g0_11688-21awk07:44:530
121350ksoftirqd/1121650irq/29-eth0_g0_08:54:491
250999341cyclictest21092-21seq08:24:431
250999341cyclictest0-21swapper/107:54:241
121650340irq/29-eth0_g0_7499-21/usr/sbin/munin07:29:410
121650340irq/29-eth0_g0_25250-21unixbench_multi08:39:520
121650340irq/29-eth0_g0_2029-21runrttasks09:06:040
121650340irq/29-eth0_g0_2029-21runrttasks09:06:040
121340ksoftirqd/17357-21taskset07:28:591
121750330irq/30-eth0_g0_3251-21grep07:09:541
121650320irq/29-eth0_g0_0-21swapper/008:44:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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