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2026-05-20 - 14:28

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 May 20, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211230ksoftirqd/1121550irq/30-eth0_g0_12:25:251
121820ksoftirqd/1121550irq/30-eth0_g0_12:13:511
121770ksoftirqd/1121550irq/30-eth0_g0_11:03:410
173262690chrt121550irq/30-eth0_g0_11:07:400
144742660sleep0121450irq/29-eth0_g0_10:38:520
196662640sleep1121450irq/29-eth0_g0_11:30:251
121520ksoftirqd/1121550irq/30-eth0_g0_10:23:151
121520ksoftirqd/1121450irq/29-eth0_g0_12:19:370
78442490sleep1121550irq/30-eth0_g0_09:33:421
2555299462cyclictest1911-21runrttasks12:01:471
121440ksoftirqd/1121450irq/29-eth0_g0_08:48:131
121550430irq/30-eth0_g0_1221-21kworker/1:210:59:331
121450430irq/29-eth0_g0_121ksoftirqd/111:09:271
121450430irq/29-eth0_g0_121ksoftirqd/111:09:271
121430ksoftirqd/1121550irq/30-eth0_g0_09:19:111
121550420irq/30-eth0_g0_1221-21kworker/1:212:20:361
121550420irq/30-eth0_g0_1221-21kworker/1:210:04:101
121550420irq/30-eth0_g0_1221-21kworker/1:210:02:541
121550420irq/30-eth0_g0_1221-21kworker/1:209:49:001
121550420irq/30-eth0_g0_1221-21kworker/1:209:49:001
121450420irq/29-eth0_g0_13-21kworker/0:109:26:340
119732420sleep1121550irq/30-eth0_g0_10:14:161
121550410irq/30-eth0_g0_258422sleep112:31:351
121450410irq/29-eth0_g0_31ksoftirqd/012:31:470
121450410irq/29-eth0_g0_1911-21runrttasks07:06:420
121450410irq/29-eth0_g0_13-21kworker/0:112:37:470
121450410irq/29-eth0_g0_13-21kworker/0:112:16:220
121450410irq/29-eth0_g0_13-21kworker/0:112:05:040
121450410irq/29-eth0_g0_13-21kworker/0:111:59:100
121450410irq/29-eth0_g0_13-21kworker/0:111:44:340
121450410irq/29-eth0_g0_13-21kworker/0:111:27:500
121450410irq/29-eth0_g0_13-21kworker/0:111:17:240
121450410irq/29-eth0_g0_13-21kworker/0:110:54:300
121450410irq/29-eth0_g0_13-21kworker/0:110:20:330
121450410irq/29-eth0_g0_13-21kworker/0:109:36:280
121550400irq/30-eth0_g0_1221-21kworker/1:212:07:211
121550400irq/30-eth0_g0_1221-21kworker/1:211:49:301
121550400irq/30-eth0_g0_1221-21kworker/1:209:38:541
121550400irq/30-eth0_g0_1221-21kworker/1:209:18:101
121550400irq/30-eth0_g0_121ksoftirqd/111:58:191
121550400irq/30-eth0_g0_121ksoftirqd/110:57:221
121550400irq/30-eth0_g0_121ksoftirqd/107:59:301
121450400irq/29-eth0_g0_31ksoftirqd/010:13:530
121450400irq/29-eth0_g0_1911-21runrttasks11:19:190
121450400irq/29-eth0_g0_141302sleep110:35:501
121450400irq/29-eth0_g0_13-21kworker/0:110:47:170
121450400irq/29-eth0_g0_13-21kworker/0:110:11:100
121450400irq/29-eth0_g0_13-21kworker/0:110:01:040
121450400irq/29-eth0_g0_13-21kworker/0:109:57:270
121450400irq/29-eth0_g0_13-21kworker/0:109:52:210
121450400irq/29-eth0_g0_13-21kworker/0:109:52:210
121450400irq/29-eth0_g0_13-21kworker/0:109:17:250
121450400irq/29-eth0_g0_13-21kworker/0:109:09:590
121550390irq/30-eth0_g0_1221-21kworker/1:210:53:271
121550390irq/30-eth0_g0_121ksoftirqd/109:47:511
121550390irq/30-eth0_g0_121ksoftirqd/109:34:401
121550390irq/30-eth0_g0_121ksoftirqd/109:13:091
121450390irq/29-eth0_g0_7525-21taskset09:30:360
121450390irq/29-eth0_g0_1911-21runrttasks11:32:250
121450390irq/29-eth0_g0_13-21kworker/0:112:24:300
121450390irq/29-eth0_g0_13-21kworker/0:110:04:150
121450390irq/29-eth0_g0_13-21kworker/0:109:47:350
121450390irq/29-eth0_g0_13-21kworker/0:109:41:240
121450390irq/29-eth0_g0_1224-21latency_hist08:28:420
121450390irq/29-eth0_g0_121ksoftirqd/111:56:110
121450390irq/29-eth0_g0_0-21swapper/008:30:510
121390ksoftirqd/1121450irq/29-eth0_g0_12:34:381
121390ksoftirqd/1121450irq/29-eth0_g0_08:03:431
121550380irq/30-eth0_g0_1911-21runrttasks10:10:581
121550380irq/30-eth0_g0_131522sleep110:26:111
121550380irq/30-eth0_g0_1221-21kworker/1:211:40:361
121550380irq/30-eth0_g0_1221-21kworker/1:211:33:481
121550380irq/30-eth0_g0_121ksoftirqd/110:32:051
121550380irq/30-eth0_g0_121ksoftirqd/109:27:091
121550380irq/30-eth0_g0_0-21swapper/111:16:161
121550380irq/30-eth0_g0_0-21swapper/109:55:021
121450380irq/29-eth0_g0_31669-21latency_hist08:08:420
121450380irq/29-eth0_g0_31ksoftirqd/010:25:330
121450380irq/29-eth0_g0_31ksoftirqd/008:16:410
121450380irq/29-eth0_g0_28100-21latency_hist07:33:410
121450380irq/29-eth0_g0_28100-21latency_hist07:33:410
121450380irq/29-eth0_g0_1911-21runrttasks11:41:520
121450380irq/29-eth0_g0_13-21kworker/0:112:10:020
121450380irq/29-eth0_g0_13-21kworker/0:109:19:140
121380ksoftirqd/1121550irq/30-eth0_g0_12:11:521
121380ksoftirqd/1121450irq/29-eth0_g0_08:56:201
121380ksoftirqd/1121450irq/29-eth0_g0_08:17:231
121380ksoftirqd/1121450irq/29-eth0_g0_07:53:421
121550370irq/30-eth0_g0_1911-21runrttasks10:45:261
121550370irq/30-eth0_g0_1221-21kworker/1:211:26:591
121550370irq/30-eth0_g0_1221-21kworker/1:211:20:011
121550370irq/30-eth0_g0_1221-21kworker/1:211:05:081
121550370irq/30-eth0_g0_1221-21kworker/1:210:40:261
121450370irq/29-eth0_g0_29086-21munin-run07:43:410
121450370irq/29-eth0_g0_26066-21latency_hist07:13:420
121450370irq/29-eth0_g0_141582sleep010:36:090
121450370irq/29-eth0_g0_13-21kworker/0:111:49:290
121450370irq/29-eth0_g0_13-21kworker/0:111:35:400
121370ksoftirqd/1121450irq/29-eth0_g0_08:11:231
2555299362cyclictest29646-21cat07:48:421
121550360irq/30-eth0_g0_0-21swapper/008:48:410
121450360irq/29-eth0_g0_30601-21munin-run07:58:410
121450360irq/29-eth0_g0_13-21kworker/0:110:52:550
121450360irq/29-eth0_g0_13-21kworker/0:110:28:550
2555299352cyclictest21282sleep108:37:401
121550350irq/30-eth0_g0_31ksoftirqd/007:52:050
121450350irq/29-eth0_g0_31ksoftirqd/011:12:240
121450350irq/29-eth0_g0_31ksoftirqd/011:12:240
121450350irq/29-eth0_g0_25519-21runrttasks07:08:261
121450350irq/29-eth0_g0_1911-21runrttasks08:35:580
2555299341cyclictest301002sleep107:53:411
121550340irq/30-eth0_g0_1221-21kworker/1:211:48:091
121450340irq/29-eth0_g0_1911-21runrttasks08:39:470
121450340irq/29-eth0_g0_1911-21runrttasks07:47:170
25552993319cyclictest4778-21latency_hist09:03:421
121450330irq/29-eth0_g0_732-21latency_hist08:23:420
121450330irq/29-eth0_g0_28984-21runrttasks07:42:311
121450330irq/29-eth0_g0_1911-21runrttasks08:10:030
121450330irq/29-eth0_g0_1911-21runrttasks08:01:380
121450330irq/29-eth0_g0_1911-21runrttasks07:24:030
121330ksoftirqd/128270-21chrt07:35:071
121330ksoftirqd/126798-21seq07:20:361
2555299321cyclictest0-21swapper/109:04:131
121550320irq/30-eth0_g0_0-21swapper/108:32:091
121550320irq/30-eth0_g0_0-21swapper/107:18:291
121450320irq/29-eth0_g0_1972-21lldpd09:06:490
121450320irq/29-eth0_g0_1911-21runrttasks08:59:350
121450320irq/29-eth0_g0_0-21swapper/008:58:420
121320ksoftirqd/1121450irq/29-eth0_g0_08:42:201
2555299311cyclictest0-21swapper/108:53:221
121550310irq/30-eth0_g0_0-21swapper/108:21:541
121450310irq/29-eth0_g0_1911-21runrttasks08:51:340
121450310irq/29-eth0_g0_1911-21runrttasks07:14:080
121310ksoftirqd/1121450irq/29-eth0_g0_07:31:331
121310ksoftirqd/1121450irq/29-eth0_g0_07:31:331
121550300irq/30-eth0_g0_0-21swapper/108:27:151
121550300irq/30-eth0_g0_0-21swapper/107:10:011
121450300irq/29-eth0_g0_27117-21date07:23:420
121450300irq/29-eth0_g0_0-21swapper/007:35:060
121300ksoftirqd/1121450irq/29-eth0_g0_07:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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