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2026-05-17 - 22:46

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Sun May 17, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211020ksoftirqd/1121550irq/30-eth0_g0_09:47:351
121970ksoftirqd/159232sleep008:22:440
239132700sleep1121450irq/29-eth0_g0_11:18:531
121530ksoftirqd/1121550irq/30-eth0_g0_09:49:521
121530ksoftirqd/1121550irq/30-eth0_g0_09:49:521
121500ksoftirqd/1121450irq/29-eth0_g0_10:41:410
121480ksoftirqd/1121450irq/29-eth0_g0_08:07:371
121470ksoftirqd/1121450irq/29-eth0_g0_12:03:100
121470ksoftirqd/1121450irq/29-eth0_g0_10:29:081
121460ksoftirqd/1121450irq/29-eth0_g0_08:01:441
121460ksoftirqd/1121450irq/29-eth0_g0_07:22:251
121450ksoftirqd/1121550irq/30-eth0_g0_11:03:371
121450ksoftirqd/1121550irq/30-eth0_g0_09:36:341
126162440sleep0121450irq/29-eth0_g0_09:28:330
121450440irq/29-eth0_g0_14295-21runrttasks09:44:240
121440ksoftirqd/1121550irq/30-eth0_g0_10:57:371
175192430sleep1121550irq/30-eth0_g0_10:16:251
121550430irq/30-eth0_g0_199142sleep110:39:441
121450430irq/29-eth0_g0_13-21kworker/0:111:29:170
121430ksoftirqd/1121550irq/30-eth0_g0_10:17:540
121550420irq/30-eth0_g0_1221-21kworker/1:211:52:421
121550420irq/30-eth0_g0_1221-21kworker/1:209:18:531
121450420irq/29-eth0_g0_31ksoftirqd/009:53:420
121450420irq/29-eth0_g0_31ksoftirqd/009:53:420
121450420irq/29-eth0_g0_13-21kworker/0:110:20:080
121450420irq/29-eth0_g0_121ksoftirqd/110:13:380
121420ksoftirqd/1121550irq/30-eth0_g0_11:38:250
121420ksoftirqd/1121550irq/30-eth0_g0_10:02:491
121420ksoftirqd/1121550irq/30-eth0_g0_09:23:130
121420ksoftirqd/1121450irq/29-eth0_g0_12:12:561
3080499411cyclictest11656-21grep09:18:481
121550410irq/30-eth0_g0_121ksoftirqd/111:56:011
121450410irq/29-eth0_g0_13-21kworker/0:111:26:370
121450410irq/29-eth0_g0_13-21kworker/0:111:26:370
121450410irq/29-eth0_g0_13-21kworker/0:110:52:140
121450410irq/29-eth0_g0_13-21kworker/0:110:45:590
121450410irq/29-eth0_g0_13-21kworker/0:109:43:190
121450410irq/29-eth0_g0_0-21swapper/007:07:240
282512400sleep1121450irq/29-eth0_g0_12:02:001
121550400irq/30-eth0_g0_1221-21kworker/1:212:30:461
121550400irq/30-eth0_g0_1221-21kworker/1:209:58:071
121550400irq/30-eth0_g0_1221-21kworker/1:209:41:101
121550400irq/30-eth0_g0_121ksoftirqd/110:51:151
121450400irq/29-eth0_g0_220882sleep011:01:200
121450400irq/29-eth0_g0_13-21kworker/0:112:22:300
121450400irq/29-eth0_g0_13-21kworker/0:112:17:560
121450400irq/29-eth0_g0_13-21kworker/0:111:49:480
121450400irq/29-eth0_g0_13-21kworker/0:110:57:440
121450400irq/29-eth0_g0_121ksoftirqd/109:34:230
121400ksoftirqd/1121550irq/30-eth0_g0_10:06:210
121400ksoftirqd/1121450irq/29-eth0_g0_12:35:151
30804993925cyclictest1911-21runrttasks10:13:461
3080499392cyclictest373-21munin-run07:28:491
121550390irq/30-eth0_g0_1221-21kworker/1:211:31:381
121550390irq/30-eth0_g0_1221-21kworker/1:211:07:191
121550390irq/30-eth0_g0_1221-21kworker/1:209:29:291
121550390irq/30-eth0_g0_1221-21kworker/1:209:13:241
121550390irq/30-eth0_g0_1221-21kworker/1:209:13:241
121550390irq/30-eth0_g0_121ksoftirqd/110:24:151
121450390irq/29-eth0_g0_31ksoftirqd/008:35:440
121450390irq/29-eth0_g0_1911-21runrttasks07:45:570
121450390irq/29-eth0_g0_13-21kworker/0:112:28:550
121450390irq/29-eth0_g0_13-21kworker/0:111:55:560
121450390irq/29-eth0_g0_121ksoftirqd/112:35:520
121450390irq/29-eth0_g0_121ksoftirqd/109:55:310
121450390irq/29-eth0_g0_10606-21diskmemload12:11:220
121550380irq/30-eth0_g0_1221-21kworker/1:211:43:091
121550380irq/30-eth0_g0_1221-21kworker/1:211:25:101
121550380irq/30-eth0_g0_1221-21kworker/1:211:25:101
121550380irq/30-eth0_g0_121ksoftirqd/111:37:031
121550380irq/30-eth0_g0_121ksoftirqd/111:15:301
121550380irq/30-eth0_g0_0-21swapper/112:22:081
121550380irq/30-eth0_g0_0-21swapper/112:06:521
121450380irq/29-eth0_g0_13-21kworker/0:112:25:520
121450380irq/29-eth0_g0_13-21kworker/0:111:19:220
121450380irq/29-eth0_g0_13-21kworker/0:111:04:120
121450380irq/29-eth0_g0_13-21kworker/0:109:17:470
121450380irq/29-eth0_g0_13-21kworker/0:109:10:530
121450380irq/29-eth0_g0_13-21kworker/0:109:10:530
121450380irq/29-eth0_g0_0-21swapper/010:31:100
121380ksoftirqd/1121450irq/29-eth0_g0_11:45:221
121380ksoftirqd/1121450irq/29-eth0_g0_10:04:311
3080499379cyclictest0-21swapper/110:45:051
3080499371cyclictest85842sleep108:48:491
3080499371cyclictest2999-21grep07:53:481
3080499371cyclictest124722sleep109:26:521
121550370irq/30-eth0_g0_30800-21munin-run07:08:481
121550370irq/30-eth0_g0_1221-21kworker/1:212:14:371
121550370irq/30-eth0_g0_1221-21kworker/1:210:21:411
121550370irq/30-eth0_g0_0-21swapper/111:11:211
121450370irq/29-eth0_g0_3080399cyclictest12:05:560
121450370irq/29-eth0_g0_31ksoftirqd/011:16:500
121450370irq/29-eth0_g0_1911-21runrttasks11:39:310
121450370irq/29-eth0_g0_13-21kworker/0:110:37:370
121450370irq/29-eth0_g0_13-21kworker/0:110:23:530
121450370irq/29-eth0_g0_13-21kworker/0:110:01:260
121450370irq/29-eth0_g0_13-21kworker/0:109:32:140
121450370irq/29-eth0_g0_0-21swapper/011:11:130
3080499361cyclictest0-21swapper/110:34:201
121450360irq/29-eth0_g0_31ksoftirqd/007:14:460
121450360irq/29-eth0_g0_26660-21taskset11:46:150
121450360irq/29-eth0_g0_1911-21runrttasks07:40:250
121450360irq/29-eth0_g0_1911-21runrttasks07:36:340
121450360irq/29-eth0_g0_1911-21runrttasks07:32:160
121450360irq/29-eth0_g0_0-21swapper/008:43:490
121360ksoftirqd/1121450irq/29-eth0_g0_09:04:521
3080499351cyclictest0-21swapper/107:44:441
121550350irq/30-eth0_g0_1221-21kworker/1:212:25:151
121450350irq/29-eth0_g0_9629-21cat08:58:490
121450350irq/29-eth0_g0_1911-21runrttasks08:09:510
121450350irq/29-eth0_g0_1911-21runrttasks08:05:110
121450350irq/29-eth0_g0_1911-21runrttasks07:26:550
121450350irq/29-eth0_g0_1911-21runrttasks07:18:520
3080499341cyclictest0-21swapper/108:33:371
3080499341cyclictest0-21swapper/108:12:401
121550340irq/30-eth0_g0_9386-21seq08:56:341
121450340irq/29-eth0_g0_1911-21runrttasks09:06:200
121450340irq/29-eth0_g0_1911-21runrttasks08:25:170
121450340irq/29-eth0_g0_1911-21runrttasks08:13:560
121450340irq/29-eth0_g0_1911-21runrttasks07:54:090
121450340irq/29-eth0_g0_1911-21runrttasks07:50:210
3080499331cyclictest0-21swapper/107:12:091
121550330irq/30-eth0_g0_1950-21latency_hist07:43:481
121450330irq/29-eth0_g0_3080399cyclictest07:10:000
121450330irq/29-eth0_g0_1911-21runrttasks09:01:120
121450330irq/29-eth0_g0_1911-21runrttasks08:30:320
121450330irq/29-eth0_g0_1911-21runrttasks07:59:270
121330ksoftirqd/1121450irq/29-eth0_g0_07:35:541
3080499321cyclictest51632sleep108:14:481
3080499321cyclictest0-21swapper/108:20:091
3080499320cyclictest0-21swapper/108:50:521
121450320irq/29-eth0_g0_9112-21taskset08:53:490
121320ksoftirqd/1473-21chrt07:28:551
3080499311cyclictest0-21swapper/108:33:541
3080499311cyclictest0-21swapper/107:14:251
3080499310cyclictest0-21swapper/109:03:291
121450310irq/29-eth0_g0_7661-21runrttasks08:39:151
121450310irq/29-eth0_g0_6463-21runrttasks08:28:051
121450310irq/29-eth0_g0_1972-21lldpd08:43:540
121310ksoftirqd/13044-21taskset07:53:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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