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2026-04-24 - 17:42

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 Fri Apr 24, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3236021530sleep1121450irq/29-eth0_g0_11:31:451
553521190sleep0121450irq/29-eth0_g0_12:26:420
2442921040sleep1121550irq/30-eth0_g0_10:14:091
250782710sleep1121450irq/29-eth0_g0_10:19:521
18122610sleep0121550irq/30-eth0_g0_11:49:590
18122610sleep0121550irq/30-eth0_g0_11:49:590
3232600sleep1121450irq/29-eth0_g0_11:35:511
121490ksoftirqd/1121550irq/30-eth0_g0_09:45:241
121470ksoftirqd/1121550irq/30-eth0_g0_12:28:371
121550460irq/30-eth0_g0_1221-21kworker/1:211:19:481
121450460irq/29-eth0_g0_13-21kworker/0:110:52:180
121460ksoftirqd/1121450irq/29-eth0_g0_07:25:541
288822450sleep0121450irq/29-eth0_g0_10:57:430
288822450sleep0121450irq/29-eth0_g0_10:57:430
121450ksoftirqd/1121550irq/30-eth0_g0_11:58:021
121450ksoftirqd/1121450irq/29-eth0_g0_10:19:001
248652440sleep0121550irq/30-eth0_g0_10:18:180
121550440irq/30-eth0_g0_0-21swapper/110:46:061
121440ksoftirqd/1121450irq/29-eth0_g0_09:14:411
121550430irq/30-eth0_g0_1221-21kworker/1:210:25:031
121550430irq/30-eth0_g0_1221-21kworker/1:209:51:351
121430ksoftirqd/1121550irq/30-eth0_g0_12:21:240
563899429cyclictest121550irq/30-eth0_g0_11:13:581
274732420sleep0121550irq/30-eth0_g0_10:44:040
121550420irq/30-eth0_g0_1221-21kworker/1:212:36:201
121550420irq/30-eth0_g0_1221-21kworker/1:211:46:361
121450420irq/29-eth0_g0_1911-21runrttasks07:06:380
121450420irq/29-eth0_g0_13-21kworker/0:110:28:220
121420ksoftirqd/1121450irq/29-eth0_g0_12:30:021
121550410irq/30-eth0_g0_31ksoftirqd/009:25:070
121550410irq/30-eth0_g0_1221-21kworker/1:209:29:121
121450410irq/29-eth0_g0_20366-21chrt09:34:130
121450410irq/29-eth0_g0_121ksoftirqd/112:12:560
121410ksoftirqd/1121450irq/29-eth0_g0_12:31:070
563899402cyclictest4265-21munin-run12:14:401
121550400irq/30-eth0_g0_1221-21kworker/1:211:26:191
121450400irq/29-eth0_g0_13-21kworker/0:111:48:430
121450400irq/29-eth0_g0_13-21kworker/0:110:20:500
121450400irq/29-eth0_g0_121ksoftirqd/109:58:440
121450400irq/29-eth0_g0_121ksoftirqd/109:58:440
121400ksoftirqd/1121550irq/30-eth0_g0_11:10:200
121400ksoftirqd/1121550irq/30-eth0_g0_10:14:210
121400ksoftirqd/1121450irq/29-eth0_g0_10:01:361
121550390irq/30-eth0_g0_1221-21kworker/1:211:17:121
121550390irq/30-eth0_g0_1221-21kworker/1:210:31:121
121550390irq/30-eth0_g0_0-21swapper/109:19:071
121450390irq/29-eth0_g0_13-21kworker/0:111:29:090
121450390irq/29-eth0_g0_13-21kworker/0:110:30:580
121450390irq/29-eth0_g0_13-21kworker/0:109:19:360
121390ksoftirqd/1121450irq/29-eth0_g0_10:51:111
121390ksoftirqd/1121450irq/29-eth0_g0_08:11:561
121390ksoftirqd/1121450irq/29-eth0_g0_07:52:061
121390ksoftirqd/1121450irq/29-eth0_g0_07:20:311
563899381cyclictest86582sleep107:39:161
193652380sleep1121550irq/30-eth0_g0_09:24:241
121550380irq/30-eth0_g0_1221-21kworker/1:210:38:411
121550380irq/30-eth0_g0_1221-21kworker/1:209:58:031
121550380irq/30-eth0_g0_1221-21kworker/1:209:58:031
121450380irq/29-eth0_g0_31ksoftirqd/011:34:240
121450380irq/29-eth0_g0_13-21kworker/0:110:03:320
121450380irq/29-eth0_g0_121ksoftirqd/111:05:590
121450380irq/29-eth0_g0_0-21swapper/008:29:410
121380ksoftirqd/1121550irq/30-eth0_g0_11:36:500
121380ksoftirqd/1121550irq/30-eth0_g0_11:00:221
121380ksoftirqd/1121550irq/30-eth0_g0_10:07:080
121380ksoftirqd/1121450irq/29-eth0_g0_11:51:201
121380ksoftirqd/1121450irq/29-eth0_g0_11:51:201
121380ksoftirqd/1121450irq/29-eth0_g0_09:37:381
121380ksoftirqd/1121450irq/29-eth0_g0_07:15:581
121550370irq/30-eth0_g0_1221-21kworker/1:212:21:431
121550370irq/30-eth0_g0_1221-21kworker/1:212:02:381
121550370irq/30-eth0_g0_1221-21kworker/1:210:56:391
121550370irq/30-eth0_g0_1221-21kworker/1:210:56:391
121550370irq/30-eth0_g0_1221-21kworker/1:210:41:141
121550370irq/30-eth0_g0_1221-21kworker/1:210:06:171
121450370irq/29-eth0_g0_5375-21runrttasks07:06:461
121450370irq/29-eth0_g0_13-21kworker/0:111:56:080
121450370irq/29-eth0_g0_13-21kworker/0:111:24:300
121450370irq/29-eth0_g0_13-21kworker/0:109:49:280
121370ksoftirqd/1121450irq/29-eth0_g0_08:02:151
121550360irq/30-eth0_g0_1221-21kworker/1:212:18:151
121550360irq/30-eth0_g0_1221-21kworker/1:209:41:271
121550360irq/30-eth0_g0_1221-21kworker/1:209:31:291
121550360irq/30-eth0_g0_0-21swapper/112:08:051
121450360irq/29-eth0_g0_563799cyclictest09:41:360
121450360irq/29-eth0_g0_13-21kworker/0:111:43:150
121450360irq/29-eth0_g0_13-21kworker/0:111:04:170
121450360irq/29-eth0_g0_13-21kworker/0:110:39:370
563899352cyclictest0-21swapper/108:25:041
121550350irq/30-eth0_g0_16337-21taskset08:54:401
121550350irq/30-eth0_g0_1221-21kworker/1:211:42:101
121550350irq/30-eth0_g0_1221-21kworker/1:211:06:131
121450350irq/29-eth0_g0_563799cyclictest12:35:250
121450350irq/29-eth0_g0_13-21kworker/0:112:17:110
121450350irq/29-eth0_g0_13-21kworker/0:112:07:470
121450350irq/29-eth0_g0_13-21kworker/0:111:15:060
121450340irq/29-eth0_g0_563799cyclictest09:24:090
121450340irq/29-eth0_g0_13-21kworker/0:110:46:150
121450340irq/29-eth0_g0_13-21kworker/0:109:34:540
121340ksoftirqd/1121450irq/29-eth0_g0_09:14:330
121340ksoftirqd/110386-21taskset07:55:421
563899332cyclictest0-21swapper/108:41:041
563899332cyclictest0-21swapper/108:41:041
563899331cyclictest80422sleep107:33:041
563899331cyclictest16952-21chrt09:00:041
121450330irq/29-eth0_g0_12802-21latency_hist08:19:410
563899321cyclictest15767-21sshd08:49:041
563899321cyclictest15767-21sshd08:49:041
121550320irq/30-eth0_g0_0-21swapper/108:35:391
121550320irq/30-eth0_g0_0-21swapper/108:35:391
121550320irq/30-eth0_g0_0-21swapper/008:55:080
121450320irq/29-eth0_g0_9712-21latency_hist07:49:410
121450320irq/29-eth0_g0_8184-21latency_hist07:34:410
121450320irq/29-eth0_g0_1911-21runrttasks07:50:160
121450320irq/29-eth0_g0_13282-21latency_hist08:24:410
121450320irq/29-eth0_g0_0-21swapper/009:51:540
121450320irq/29-eth0_g0_0-21swapper/007:59:410
121550310irq/30-eth0_g0_1911-21runrttasks08:14:010
121550310irq/30-eth0_g0_16558-21runrttasks08:56:251
121550310irq/30-eth0_g0_12977-21taskset08:21:121
121450310irq/29-eth0_g0_8846-21chrt07:40:330
121450310irq/29-eth0_g0_1911-21runrttasks07:19:280
121450310irq/29-eth0_g0_0-21swapper/008:44:400
121450310irq/29-eth0_g0_0-21swapper/008:44:400
121450310irq/29-eth0_g0_0-21swapper/008:34:410
121450310irq/29-eth0_g0_0-21swapper/008:34:410
121450310irq/29-eth0_g0_0-21swapper/007:29:410
121310ksoftirqd/1121450irq/29-eth0_g0_07:40:591
121550300irq/30-eth0_g0_6152-21wc07:14:410
121550300irq/30-eth0_g0_0-21swapper/109:08:081
121550300irq/30-eth0_g0_0-21swapper/108:30:271
121550300irq/30-eth0_g0_0-21swapper/108:30:271
121450300irq/29-eth0_g0_563799cyclictest09:04:410
121450300irq/29-eth0_g0_2930-21taskset12:00:580
121450300irq/29-eth0_g0_17684-21taskset09:07:390
121450300irq/29-eth0_g0_0-21swapper/008:54:120
121450300irq/29-eth0_g0_0-21swapper/008:45:360
121450300irq/29-eth0_g0_0-21swapper/008:45:360
121450300irq/29-eth0_g0_0-21swapper/008:03:230
121450300irq/29-eth0_g0_0-21swapper/007:36:270
121300ksoftirqd/1121450irq/29-eth0_g0_07:09:431
563899291cyclictest117532sleep108:09:411
563899291cyclictest0-21swapper/108:17:531
563899291cyclictest0-21swapper/107:46:381
121450290irq/29-eth0_g0_11558-21seq08:07:280
121450290irq/29-eth0_g0_0-21swapper/008:38:130
121450290irq/29-eth0_g0_0-21swapper/008:38:130
121450290irq/29-eth0_g0_0-21swapper/007:19:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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