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2026-04-21 - 06:40

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Tue Apr 21, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2016721510sleep0121450irq/29-eth0_g0_23:33:430
121830ksoftirqd/1168592chrt23:00:420
121600ksoftirqd/1121450irq/29-eth0_g0_21:44:411
131042590sleep0121550irq/30-eth0_g0_22:24:230
121580ksoftirqd/1121450irq/29-eth0_g0_22:20:281
121570ksoftirqd/1121550irq/30-eth0_g0_23:51:221
71522540sleep1121450irq/29-eth0_g0_21:25:141
121540ksoftirqd/1121550irq/30-eth0_g0_21:59:171
243392530sleep1121550irq/30-eth0_g0_00:14:481
121530ksoftirqd/1121550irq/30-eth0_g0_23:24:011
121530ksoftirqd/1121550irq/30-eth0_g0_00:00:391
121520ksoftirqd/1121550irq/30-eth0_g0_22:30:461
121520ksoftirqd/1121550irq/30-eth0_g0_21:11:141
101722520chrt121550irq/30-eth0_g0_21:54:520
121510ksoftirqd/1210272sleep023:41:540
121510ksoftirqd/1121550irq/30-eth0_g0_21:54:461
121510ksoftirqd/1121550irq/30-eth0_g0_21:54:461
121510ksoftirqd/1121550irq/30-eth0_g0_21:33:281
121510ksoftirqd/1121550irq/30-eth0_g0_00:21:291
121500ksoftirqd/1121550irq/30-eth0_g0_23:02:401
121500ksoftirqd/1121550irq/30-eth0_g0_22:36:031
121500ksoftirqd/1121550irq/30-eth0_g0_21:14:521
121500ksoftirqd/1121550irq/30-eth0_g0_00:34:301
121500ksoftirqd/1121450irq/29-eth0_g0_22:38:420
121500ksoftirqd/1121450irq/29-eth0_g0_21:13:440
121490ksoftirqd/1121550irq/30-eth0_g0_00:09:471
121490ksoftirqd/1121550irq/30-eth0_g0_00:03:310
121480ksoftirqd/1121450irq/29-eth0_g0_23:40:181
121480ksoftirqd/1121450irq/29-eth0_g0_00:18:271
121470ksoftirqd/1121450irq/29-eth0_g0_22:46:300
121450460irq/29-eth0_g0_31ksoftirqd/022:01:280
121460ksoftirqd/1121550irq/30-eth0_g0_22:19:480
121460ksoftirqd/1121550irq/30-eth0_g0_00:35:021
121460ksoftirqd/1121450irq/29-eth0_g0_23:16:221
121460ksoftirqd/1121450irq/29-eth0_g0_22:29:101
121550450irq/30-eth0_g0_1221-21kworker/1:223:26:391
121450ksoftirqd/1121550irq/30-eth0_g0_22:15:171
121550430irq/30-eth0_g0_1221-21kworker/1:222:56:351
121550430irq/30-eth0_g0_1221-21kworker/1:222:04:441
121430ksoftirqd/1121550irq/30-eth0_g0_23:27:080
121430ksoftirqd/1121450irq/29-eth0_g0_22:50:101
121550420irq/30-eth0_g0_1221-21kworker/1:222:48:501
121450420irq/29-eth0_g0_1911-21runrttasks00:38:290
121450420irq/29-eth0_g0_13-21kworker/0:121:26:490
121450420irq/29-eth0_g0_121ksoftirqd/122:09:300
121550410irq/30-eth0_g0_121ksoftirqd/123:54:380
121450410irq/29-eth0_g0_31ksoftirqd/022:26:140
121450410irq/29-eth0_g0_13-21kworker/0:123:59:490
121450410irq/29-eth0_g0_13-21kworker/0:122:32:070
121550400irq/30-eth0_g0_1221-21kworker/1:223:06:251
121550400irq/30-eth0_g0_1221-21kworker/1:221:47:321
121450400irq/29-eth0_g0_31ksoftirqd/022:52:050
121450400irq/29-eth0_g0_13-21kworker/0:123:15:440
121450400irq/29-eth0_g0_13-21kworker/0:122:12:110
121450400irq/29-eth0_g0_13-21kworker/0:121:20:060
121450400irq/29-eth0_g0_13-21kworker/0:100:13:220
121400ksoftirqd/1121450irq/29-eth0_g0_23:34:361
121400ksoftirqd/1121450irq/29-eth0_g0_22:44:341
2570399391cyclictest5511-21diskmemload21:21:051
121550390irq/30-eth0_g0_31ksoftirqd/000:26:180
121550390irq/30-eth0_g0_1221-21kworker/1:222:11:531
121450390irq/29-eth0_g0_8232-21chrt21:35:570
121450390irq/29-eth0_g0_13-21kworker/0:123:23:390
121450390irq/29-eth0_g0_13-21kworker/0:122:43:330
121450390irq/29-eth0_g0_13-21kworker/0:100:06:000
121450390irq/29-eth0_g0_121ksoftirqd/121:51:050
121450390irq/29-eth0_g0_121ksoftirqd/121:51:050
121450390irq/29-eth0_g0_121ksoftirqd/121:42:170
121550380irq/30-eth0_g0_1221-21kworker/1:223:47:591
121550380irq/30-eth0_g0_1221-21kworker/1:200:28:301
121550380irq/30-eth0_g0_0-21swapper/123:38:461
121450380irq/29-eth0_g0_31ksoftirqd/023:12:240
121450380irq/29-eth0_g0_31ksoftirqd/000:30:000
121450380irq/29-eth0_g0_13-21kworker/0:123:39:070
121450380irq/29-eth0_g0_13-21kworker/0:122:55:030
121450380irq/29-eth0_g0_13-21kworker/0:100:21:510
121450380irq/29-eth0_g0_13-21kworker/0:100:15:100
121450380irq/29-eth0_g0_121ksoftirqd/123:48:440
2570399379cyclictest5032-21latency_hist21:04:481
2570399371cyclictest432-21sort20:19:491
121550370irq/30-eth0_g0_1221-21kworker/1:221:37:321
121450370irq/29-eth0_g0_389-21latency_hist20:19:490
121450370irq/29-eth0_g0_2570299cyclictest19:23:180
121450370irq/29-eth0_g0_1911-21runrttasks20:11:290
121450370irq/29-eth0_g0_16482sleep020:31:360
121450370irq/29-eth0_g0_13-21kworker/0:121:48:440
121450370irq/29-eth0_g0_13-21kworker/0:121:32:270
121450370irq/29-eth0_g0_13-21kworker/0:121:17:300
121450370irq/29-eth0_g0_0-21swapper/019:07:380
121370ksoftirqd/1121450irq/29-eth0_g0_23:10:021
2570399362cyclictest22873-21latency_hist23:59:491
121550360irq/30-eth0_g0_1221-21kworker/1:222:05:171
121450360irq/29-eth0_g0_2570299cyclictest23:04:550
121450360irq/29-eth0_g0_1911-21runrttasks21:06:060
121450360irq/29-eth0_g0_1911-21runrttasks19:56:580
121450360irq/29-eth0_g0_1911-21runrttasks19:26:040
121450360irq/29-eth0_g0_0-21swapper/019:54:490
2570399351cyclictest4008-21chrt20:54:481
2570399351cyclictest4008-21chrt20:54:481
2570399351cyclictest0-21swapper/121:09:201
2570399351cyclictest0-21swapper/120:06:111
121550350irq/30-eth0_g0_29833-21latency_hist19:49:491
121450350irq/29-eth0_g0_31824-21sort20:09:490
121450350irq/29-eth0_g0_28787-21cat19:39:490
121450350irq/29-eth0_g0_1972-21lldpd20:55:290
121450350irq/29-eth0_g0_1911-21runrttasks20:20:470
121450350irq/29-eth0_g0_1911-21runrttasks19:40:580
121450350irq/29-eth0_g0_1911-21runrttasks19:06:461
25703993428cyclictest1911-21runrttasks19:17:041
2570399342cyclictest1911-21runrttasks19:11:161
2570399341cyclictest1476-21grep20:29:491
121550340irq/30-eth0_g0_0-21swapper/119:44:491
121450340irq/29-eth0_g0_5007-21cat21:04:480
121450340irq/29-eth0_g0_3989-21wc20:54:480
121450340irq/29-eth0_g0_3989-21wc20:54:480
121450340irq/29-eth0_g0_1911-21runrttasks20:40:040
2570399334cyclictest0-21swapper/119:38:551
2570399331cyclictest1911-21runrttasks19:54:101
2570399331cyclictest1641-21chrt20:31:331
2570399331cyclictest0-21swapper/120:44:491
2570399330cyclictest0-21swapper/120:45:271
2570399330cyclictest0-21swapper/120:45:271
2570399330cyclictest0-21swapper/120:04:201
2570399330cyclictest0-21swapper/119:59:301
121450330irq/29-eth0_g0_25799-21runrttasks19:10:030
121450330irq/29-eth0_g0_1911-21runrttasks20:45:280
121450330irq/29-eth0_g0_1911-21runrttasks20:45:280
121450330irq/29-eth0_g0_1911-21runrttasks20:36:090
121450330irq/29-eth0_g0_1911-21runrttasks20:28:540
25703993217cyclictest4529-21seq20:59:481
2570399321cyclictest0-21swapper/119:31:431
2570399320cyclictest0-21swapper/120:21:521
121550320irq/30-eth0_g0_27338-21taskset19:25:131
121450320irq/29-eth0_g0_27068-21runrttasks19:22:571
121450320irq/29-eth0_g0_1911-21runrttasks19:18:320
2570399311cyclictest0-21swapper/120:12:141
121450310irq/29-eth0_g0_1911-21runrttasks19:33:260
121450310irq/29-eth0_g0_0-21swapper/120:35:351
121450310irq/29-eth0_g0_0-21swapper/019:47:230
121300ksoftirqd/1121550irq/30-eth0_g0_20:02:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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