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2026-05-03 - 21:23

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Sun May 03, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2926021280sleep0121450irq/29-eth0_g0_09:19:590
101921230chrt121550irq/30-eth0_g0_10:01:371
1392621100sleep0121450irq/29-eth0_g0_12:08:210
121860ksoftirqd/1121550irq/30-eth0_g0_11:47:211
121820ksoftirqd/1121550irq/30-eth0_g0_11:17:081
121740ksoftirqd/1121550irq/30-eth0_g0_12:24:561
121630ksoftirqd/1121550irq/30-eth0_g0_10:04:431
282722590sleep1121450irq/29-eth0_g0_09:10:201
282722590sleep1121450irq/29-eth0_g0_09:10:201
121570ksoftirqd/1121550irq/30-eth0_g0_09:49:201
68332520sleep1121450irq/29-eth0_g0_10:58:431
121480ksoftirqd/1121550irq/30-eth0_g0_10:17:570
101372470sleep0121450irq/29-eth0_g0_11:30:410
15877994533cyclictest16570-21wc12:34:191
121450450irq/29-eth0_g0_31ksoftirqd/012:32:410
15877994431cyclictest30179-21ls09:29:201
121550440irq/30-eth0_g0_1221-21kworker/1:211:00:051
121550440irq/30-eth0_g0_1221-21kworker/1:210:12:071
121550440irq/30-eth0_g0_121ksoftirqd/110:49:281
121440ksoftirqd/1121550irq/30-eth0_g0_11:54:501
121440ksoftirqd/1121450irq/29-eth0_g0_11:14:151
121440ksoftirqd/1121450irq/29-eth0_g0_08:00:201
151912430sleep1121450irq/29-eth0_g0_12:20:171
151912430sleep1121450irq/29-eth0_g0_12:20:171
121550420irq/30-eth0_g0_1221-21kworker/1:212:17:241
121550420irq/30-eth0_g0_1221-21kworker/1:211:36:251
121550420irq/30-eth0_g0_1221-21kworker/1:210:20:511
121450420irq/29-eth0_g0_1911-21runrttasks12:18:300
121450420irq/29-eth0_g0_1911-21runrttasks10:08:040
121450420irq/29-eth0_g0_13-21kworker/0:110:12:440
121420ksoftirqd/1121550irq/30-eth0_g0_11:34:370
15877994129cyclictest0-21swapper/109:22:441
15877994129cyclictest0-21swapper/107:12:031
121550410irq/30-eth0_g0_121ksoftirqd/111:32:581
121450410irq/29-eth0_g0_31ksoftirqd/012:23:590
121450410irq/29-eth0_g0_31ksoftirqd/012:23:590
121450410irq/29-eth0_g0_31ksoftirqd/011:24:240
312722400sleep1121550irq/30-eth0_g0_09:39:431
144142400chrt121450irq/29-eth0_g0_12:13:060
121550400irq/30-eth0_g0_1221-21kworker/1:212:10:361
121550400irq/30-eth0_g0_1221-21kworker/1:209:52:011
121450400irq/29-eth0_g0_75172sleep011:04:480
121450400irq/29-eth0_g0_1911-21runrttasks07:47:360
121450400irq/29-eth0_g0_13-21kworker/0:110:37:530
121450400irq/29-eth0_g0_13-21kworker/0:110:29:150
121450400irq/29-eth0_g0_13-21kworker/0:110:22:500
121550390irq/30-eth0_g0_1221-21kworker/1:211:22:461
121550390irq/30-eth0_g0_1221-21kworker/1:211:22:461
121550390irq/30-eth0_g0_1221-21kworker/1:210:17:291
121550390irq/30-eth0_g0_1221-21kworker/1:209:56:251
121550390irq/30-eth0_g0_121ksoftirqd/112:09:101
121450390irq/29-eth0_g0_31ksoftirqd/010:39:290
121450390irq/29-eth0_g0_1911-21runrttasks12:25:070
121450390irq/29-eth0_g0_1911-21runrttasks11:23:390
121450390irq/29-eth0_g0_1911-21runrttasks11:23:390
121450390irq/29-eth0_g0_1911-21runrttasks10:30:060
121450390irq/29-eth0_g0_1911-21runrttasks07:54:540
121450390irq/29-eth0_g0_13-21kworker/0:111:51:070
121450390irq/29-eth0_g0_13-21kworker/0:109:43:420
121390ksoftirqd/1121450irq/29-eth0_g0_11:27:561
15877993833cyclictest24539-21munin-run08:34:201
121550380irq/30-eth0_g0_1221-21kworker/1:212:01:401
121550380irq/30-eth0_g0_1221-21kworker/1:211:53:321
121550380irq/30-eth0_g0_121ksoftirqd/112:34:281
121550380irq/30-eth0_g0_121ksoftirqd/109:34:291
121550380irq/30-eth0_g0_121ksoftirqd/109:31:491
121550380irq/30-eth0_g0_121ksoftirqd/109:15:241
121550380irq/30-eth0_g0_0-21swapper/110:43:221
121450380irq/29-eth0_g0_7988-21taskset11:09:240
121450380irq/29-eth0_g0_31ksoftirqd/011:57:530
121450380irq/29-eth0_g0_24540-21seq08:34:200
121450380irq/29-eth0_g0_1972-21lldpd10:01:240
121450380irq/29-eth0_g0_1911-21runrttasks08:37:210
121450380irq/29-eth0_g0_15824-21runrttasks07:08:500
121450380irq/29-eth0_g0_13-21kworker/0:111:47:240
121450380irq/29-eth0_g0_13-21kworker/0:111:40:300
121450380irq/29-eth0_g0_13-21kworker/0:109:45:220
121450380irq/29-eth0_g0_13-21kworker/0:109:25:590
121380ksoftirqd/1121450irq/29-eth0_g0_10:55:430
121550370irq/30-eth0_g0_1221-21kworker/1:211:05:551
121550370irq/30-eth0_g0_1221-21kworker/1:210:38:511
121550370irq/30-eth0_g0_121ksoftirqd/110:25:141
121450370irq/29-eth0_g0_31ksoftirqd/009:12:120
121450370irq/29-eth0_g0_31ksoftirqd/009:12:120
121450370irq/29-eth0_g0_1911-21runrttasks09:05:350
121450370irq/29-eth0_g0_13-21kworker/0:110:59:520
121450370irq/29-eth0_g0_13-21kworker/0:110:51:180
121450370irq/29-eth0_g0_13-21kworker/0:110:47:450
121450370irq/29-eth0_g0_13-21kworker/0:109:54:290
121450370irq/29-eth0_g0_13-21kworker/0:109:49:210
121450370irq/29-eth0_g0_13-21kworker/0:109:36:590
121450370irq/29-eth0_g0_13-21kworker/0:109:31:530
121450370irq/29-eth0_g0_13-21kworker/0:109:14:210
15877993630cyclictest17683-21runrttasks07:26:401
121550360irq/30-eth0_g0_15633-21seq07:06:381
121550360irq/30-eth0_g0_1221-21kworker/1:210:45:241
121550360irq/30-eth0_g0_1221-21kworker/1:210:31:131
121550360irq/30-eth0_g0_121ksoftirqd/111:41:021
121450360irq/29-eth0_g0_8793-21seq11:17:500
121450360irq/29-eth0_g0_26606-21latency_hist08:54:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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