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2026-05-09 - 22:13

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 Sat May 09, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1577121350sleep0121550irq/30-eth0_g0_09:22:500
121960ksoftirqd/1121550irq/30-eth0_g0_11:49:331
121930ksoftirqd/1121550irq/30-eth0_g0_09:13:041
121730ksoftirqd/1121550irq/30-eth0_g0_10:32:221
121690ksoftirqd/1121550irq/30-eth0_g0_08:42:421
121620ksoftirqd/1172622chrt09:37:300
240722540sleep1121450irq/29-eth0_g0_10:44:281
121540ksoftirqd/1121550irq/30-eth0_g0_09:23:091
3722530sleep1121450irq/29-eth0_g0_12:11:281
121530ksoftirqd/1121550irq/30-eth0_g0_12:35:041
149562510sleep0121450irq/29-eth0_g0_09:14:130
121490ksoftirqd/1121550irq/30-eth0_g0_10:18:461
121490ksoftirqd/1121450irq/29-eth0_g0_12:16:061
121470ksoftirqd/1121550irq/30-eth0_g0_11:17:381
121470ksoftirqd/1121550irq/30-eth0_g0_09:59:531
121470ksoftirqd/1121550irq/30-eth0_g0_09:45:091
121470ksoftirqd/1121450irq/29-eth0_g0_10:36:100
121460ksoftirqd/1121450irq/29-eth0_g0_12:34:590
121550450irq/30-eth0_g0_1221-21kworker/1:212:23:301
121550450irq/30-eth0_g0_1221-21kworker/1:212:23:301
121450ksoftirqd/1121550irq/30-eth0_g0_10:13:221
121450ksoftirqd/1121550irq/30-eth0_g0_09:36:081
121550440irq/30-eth0_g0_1221-21kworker/1:211:57:351
121440ksoftirqd/1121550irq/30-eth0_g0_10:53:311
121550430irq/30-eth0_g0_1221-21kworker/1:212:05:021
121550430irq/30-eth0_g0_1221-21kworker/1:209:17:141
121450430irq/29-eth0_g0_31ksoftirqd/009:52:050
121430ksoftirqd/1121550irq/30-eth0_g0_12:18:390
121430ksoftirqd/1121550irq/30-eth0_g0_10:58:591
121550420irq/30-eth0_g0_13-21kworker/0:111:39:070
121550420irq/30-eth0_g0_1221-21kworker/1:210:35:141
121420ksoftirqd/1121550irq/30-eth0_g0_10:23:291
121420ksoftirqd/1121550irq/30-eth0_g0_10:19:160
121550410irq/30-eth0_g0_1221-21kworker/1:212:33:411
121450410irq/29-eth0_g0_27125-21chrt11:14:370
121450410irq/29-eth0_g0_1911-21runrttasks07:07:170
121450410irq/29-eth0_g0_1911-21runrttasks07:06:121
121410ksoftirqd/1121550irq/30-eth0_g0_11:27:180
121410ksoftirqd/1121550irq/30-eth0_g0_11:08:330
251922400sleep0121550irq/30-eth0_g0_10:55:400
121550400irq/30-eth0_g0_186512sleep109:51:031
121550400irq/30-eth0_g0_121ksoftirqd/109:40:381
121450400irq/29-eth0_g0_31ksoftirqd/012:19:490
121450400irq/29-eth0_g0_31ksoftirqd/012:19:490
121450400irq/29-eth0_g0_31ksoftirqd/011:09:350
121450400irq/29-eth0_g0_31ksoftirqd/011:09:350
121450400irq/29-eth0_g0_31ksoftirqd/010:47:070
121450400irq/29-eth0_g0_13-21kworker/0:109:55:310
121450400irq/29-eth0_g0_121ksoftirqd/112:29:550
121450400irq/29-eth0_g0_121ksoftirqd/109:47:110
121400ksoftirqd/1121450irq/29-eth0_g0_08:15:351
224399391cyclictest10336-21latency_hist08:29:061
121450390irq/29-eth0_g0_31ksoftirqd/012:05:400
121450390irq/29-eth0_g0_13-21kworker/0:111:30:050
121450390irq/29-eth0_g0_13-21kworker/0:110:50:130
121450390irq/29-eth0_g0_13-21kworker/0:109:25:530
121450390irq/29-eth0_g0_121ksoftirqd/111:59:220
121390ksoftirqd/1121450irq/29-eth0_g0_09:43:290
121550380irq/30-eth0_g0_31ksoftirqd/011:44:510
121550380irq/30-eth0_g0_1221-21kworker/1:211:37:211
121550380irq/30-eth0_g0_1221-21kworker/1:210:24:151
121450380irq/29-eth0_g0_31ksoftirqd/010:12:060
121450380irq/29-eth0_g0_224299cyclictest09:29:520
121450380irq/29-eth0_g0_224299cyclictest09:29:520
121450380irq/29-eth0_g0_1911-21runrttasks10:42:010
121450380irq/29-eth0_g0_13-21kworker/0:112:29:000
121450380irq/29-eth0_g0_13-21kworker/0:111:42:040
121450380irq/29-eth0_g0_13-21kworker/0:111:03:090
121450380irq/29-eth0_g0_13-21kworker/0:110:17:120
121450380irq/29-eth0_g0_13-21kworker/0:110:07:290
121380ksoftirqd/1121550irq/30-eth0_g0_11:23:020
224399372cyclictest8841-21cat08:14:061
224399371cyclictest8364-21cat08:09:071
224399371cyclictest25619-21sshd10:59:461
121550370irq/30-eth0_g0_1221-21kworker/1:212:02:311
121550370irq/30-eth0_g0_1221-21kworker/1:211:24:461
121550370irq/30-eth0_g0_1221-21kworker/1:210:07:041
121550370irq/30-eth0_g0_1221-21kworker/1:209:29:141
121550370irq/30-eth0_g0_1221-21kworker/1:209:29:141
121550370irq/30-eth0_g0_121ksoftirqd/112:24:111
121550370irq/30-eth0_g0_121ksoftirqd/111:11:351
121550370irq/30-eth0_g0_121ksoftirqd/111:11:351
121550370irq/30-eth0_g0_121ksoftirqd/111:04:571
121550370irq/30-eth0_g0_0-21swapper/109:57:431
121450370irq/29-eth0_g0_1911-21runrttasks08:14:020
121450370irq/29-eth0_g0_1911-21runrttasks07:44:180
121450370irq/29-eth0_g0_1911-21runrttasks07:37:030
121450370irq/29-eth0_g0_13-21kworker/0:112:13:510
121450370irq/29-eth0_g0_13-21kworker/0:111:54:040
121450370irq/29-eth0_g0_13-21kworker/0:110:33:100
121450370irq/29-eth0_g0_13-21kworker/0:110:27:060
121450370irq/29-eth0_g0_13-21kworker/0:110:01:170
121370ksoftirqd/1121450irq/29-eth0_g0_11:40:411
121370ksoftirqd/1121450irq/29-eth0_g0_10:43:321
224399362cyclictest5805-21latency_hist07:44:061
224399362cyclictest12855-21cat08:54:071
224399361cyclictest7859-21grep08:04:071
224399361cyclictest0-21swapper/108:30:481
121550360irq/30-eth0_g0_1221-21kworker/1:211:45:171
121550360irq/30-eth0_g0_1221-21kworker/1:211:31:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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