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2026-05-04 - 20:34

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 Mon May 04, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
675621350sleep1121550irq/30-eth0_g0_09:09:191
1376021100sleep0121450irq/29-eth0_g0_10:19:180
1211040ksoftirqd/1121550irq/30-eth0_g0_12:24:180
252762940sleep0121450irq/29-eth0_g0_12:13:010
121770ksoftirqd/1327402sleep008:05:500
121610ksoftirqd/1121450irq/29-eth0_g0_10:57:531
121530ksoftirqd/1121550irq/30-eth0_g0_12:10:441
121520ksoftirqd/1121550irq/30-eth0_g0_11:31:441
121490ksoftirqd/1121550irq/30-eth0_g0_12:16:331
121490ksoftirqd/1121550irq/30-eth0_g0_09:27:181
121480ksoftirqd/1121550irq/30-eth0_g0_11:14:381
121480ksoftirqd/1121450irq/29-eth0_g0_09:31:540
121470ksoftirqd/1121550irq/30-eth0_g0_11:12:071
121460ksoftirqd/1121550irq/30-eth0_g0_11:06:181
121460ksoftirqd/1121550irq/30-eth0_g0_07:54:550
2699499458cyclictest20364-21latency_hist11:24:181
121450ksoftirqd/1121550irq/30-eth0_g0_10:34:251
121450ksoftirqd/1121550irq/30-eth0_g0_09:34:431
121550440irq/30-eth0_g0_1221-21kworker/1:210:40:571
121440ksoftirqd/1121450irq/29-eth0_g0_09:59:241
121550430irq/30-eth0_g0_1221-21kworker/1:211:55:411
121550430irq/30-eth0_g0_1221-21kworker/1:210:45:151
121550430irq/30-eth0_g0_1221-21kworker/1:209:33:541
121450430irq/29-eth0_g0_1911-21runrttasks09:23:310
121430ksoftirqd/1121450irq/29-eth0_g0_11:13:090
121430ksoftirqd/1121450irq/29-eth0_g0_10:59:590
121430ksoftirqd/1121450irq/29-eth0_g0_09:15:181
121550420irq/30-eth0_g0_1221-21kworker/1:212:30:091
121550420irq/30-eth0_g0_1221-21kworker/1:212:01:561
121550420irq/30-eth0_g0_1221-21kworker/1:211:26:291
121550420irq/30-eth0_g0_1221-21kworker/1:209:45:101
121550420irq/30-eth0_g0_1221-21kworker/1:209:20:551
121450420irq/29-eth0_g0_31ksoftirqd/010:30:550
121420ksoftirqd/1121550irq/30-eth0_g0_12:30:110
131152410sleep1121550irq/30-eth0_g0_10:12:421
121450410irq/29-eth0_g0_31ksoftirqd/010:48:140
121450410irq/29-eth0_g0_13-21kworker/0:112:37:370
121450410irq/29-eth0_g0_13-21kworker/0:111:42:060
121450410irq/29-eth0_g0_13-21kworker/0:110:27:300
121450410irq/29-eth0_g0_121ksoftirqd/110:00:380
121450410irq/29-eth0_g0_0-21swapper/009:54:330
121410ksoftirqd/1121550irq/30-eth0_g0_12:25:360
121410ksoftirqd/1121550irq/30-eth0_g0_10:49:550
121410ksoftirqd/1121550irq/30-eth0_g0_10:49:550
121410ksoftirqd/1121450irq/29-eth0_g0_12:05:101
121410ksoftirqd/1121450irq/29-eth0_g0_10:23:001
117450410irq/72-mmc0121ksoftirqd/108:52:141
121550400irq/30-eth0_g0_1221-21kworker/1:211:40:041
121550400irq/30-eth0_g0_1221-21kworker/1:211:02:231
121550400irq/30-eth0_g0_1221-21kworker/1:210:17:281
121550400irq/30-eth0_g0_11427-21chrt09:55:421
121450400irq/29-eth0_g0_13-21kworker/0:111:45:220
121450400irq/29-eth0_g0_13-21kworker/0:111:31:180
121450400irq/29-eth0_g0_121ksoftirqd/111:26:350
121400ksoftirqd/1121550irq/30-eth0_g0_11:52:420
121400ksoftirqd/1121450irq/29-eth0_g0_11:52:411
127022390sleep1121450irq/29-eth0_g0_10:08:481
121550390irq/30-eth0_g0_31ksoftirqd/012:16:500
121550390irq/30-eth0_g0_121ksoftirqd/112:37:081
121450390irq/29-eth0_g0_13-21kworker/0:111:54:590
121450390irq/29-eth0_g0_13-21kworker/0:111:37:350
121450390irq/29-eth0_g0_13-21kworker/0:111:21:590
121450390irq/29-eth0_g0_13-21kworker/0:110:11:410
121450390irq/29-eth0_g0_13-21kworker/0:109:43:290
121450390irq/29-eth0_g0_121ksoftirqd/110:04:210
121450390irq/29-eth0_g0_0-21swapper/007:09:170
121450390irq/29-eth0_g0_0-21swapper/007:09:170
121390ksoftirqd/1121550irq/30-eth0_g0_10:57:240
121390ksoftirqd/1121550irq/30-eth0_g0_09:48:100
121390ksoftirqd/1121550irq/30-eth0_g0_08:46:190
121390ksoftirqd/1121550irq/30-eth0_g0_08:37:330
121390ksoftirqd/1121550irq/30-eth0_g0_07:30:070
121390ksoftirqd/1121550irq/30-eth0_g0_07:17:090
121390ksoftirqd/1121450irq/29-eth0_g0_09:02:311
121390ksoftirqd/1121450irq/29-eth0_g0_09:02:311
121390ksoftirqd/1121450irq/29-eth0_g0_07:10:311
121550380irq/30-eth0_g0_0-21swapper/109:43:301
121450380irq/29-eth0_g0_2699499cyclictest10:50:391
121450380irq/29-eth0_g0_2699499cyclictest10:50:391
121450380irq/29-eth0_g0_26566-21runrttasks07:04:281
121450380irq/29-eth0_g0_26566-21runrttasks07:04:281
121450380irq/29-eth0_g0_13-21kworker/0:109:53:370
121450380irq/29-eth0_g0_13-21kworker/0:109:53:370
121450380irq/29-eth0_g0_13-21kworker/0:109:17:110
121380ksoftirqd/1121550irq/30-eth0_g0_12:04:380
121380ksoftirqd/1121550irq/30-eth0_g0_12:03:250
121380ksoftirqd/1121550irq/30-eth0_g0_09:28:080
121380ksoftirqd/1121550irq/30-eth0_g0_09:14:060
121380ksoftirqd/1121550irq/30-eth0_g0_08:50:130
121380ksoftirqd/1121450irq/29-eth0_g0_12:26:471
121380ksoftirqd/1121450irq/29-eth0_g0_11:16:460
121550370irq/30-eth0_g0_1221-21kworker/1:211:48:321
121550370irq/30-eth0_g0_1221-21kworker/1:210:26:521
121450370irq/29-eth0_g0_1911-21runrttasks08:58:240
121450370irq/29-eth0_g0_1911-21runrttasks08:42:540
121450370irq/29-eth0_g0_15652-21taskset10:37:500
121450370irq/29-eth0_g0_13-21kworker/0:109:37:170
121370ksoftirqd/1121550irq/30-eth0_g0_11:04:410
121370ksoftirqd/1121450irq/29-eth0_g0_07:52:331
2699499361cyclictest6675-21diskmemload10:29:501
2699499361cyclictest32040-21cat07:59:181
121550360irq/30-eth0_g0_1221-21kworker/1:212:23:081
121550360irq/30-eth0_g0_1221-21kworker/1:209:53:451
121550360irq/30-eth0_g0_1221-21kworker/1:209:53:451
121450360irq/29-eth0_g0_1966-21snmpd08:01:560
121450360irq/29-eth0_g0_1911-21runrttasks10:21:460
121450360irq/29-eth0_g0_1911-21runrttasks08:59:500
121450360irq/29-eth0_g0_1911-21runrttasks08:59:500
121450360irq/29-eth0_g0_1911-21runrttasks08:32:250
121450360irq/29-eth0_g0_1911-21runrttasks08:28:260
121450360irq/29-eth0_g0_1911-21runrttasks08:16:120
121450360irq/29-eth0_g0_16313-21latency_hist10:44:180
2699499351cyclictest0-21swapper/111:35:211
2699499351cyclictest0-21swapper/108:47:211
121450350irq/29-eth0_g0_6710-21latency_hist09:09:180
2699499341cyclictest6675-21diskmemload09:09:171
121550340irq/30-eth0_g0_4010-21sshd08:42:371
121450340irq/29-eth0_g0_1911-21runrttasks08:12:410
121450340irq/29-eth0_g0_1911-21runrttasks07:53:050
121450340irq/29-eth0_g0_1911-21runrttasks07:26:590
2699499331cyclictest0-21swapper/108:09:261
2699499331cyclictest0-21swapper/107:43:041
121450330irq/29-eth0_g0_32540-21sort08:04:181
121450330irq/29-eth0_g0_31075-21cat07:49:180
121450330irq/29-eth0_g0_27267-21sshd07:11:380
121450330irq/29-eth0_g0_1911-21runrttasks08:24:010
121450330irq/29-eth0_g0_1911-21runrttasks07:37:440
121330ksoftirqd/129592-21taskset07:34:251
2699499321cyclictest0-21swapper/108:34:391
2699499321cyclictest0-21swapper/108:17:131
121450320irq/29-eth0_g0_1911-21runrttasks07:40:200
121320ksoftirqd/1121450irq/29-eth0_g0_08:23:531
309312310sleep10-21swapper/107:48:171
2699499311cyclictest0-21swapper/107:14:261
121550310irq/30-eth0_g0_2699499cyclictest07:29:331
121450310irq/29-eth0_g0_28988-21runrttasks07:29:091
121310ksoftirqd/12306-21taskset08:25:221
121310ksoftirqd/1121450irq/29-eth0_g0_08:05:301
2699499301cyclictest0-21swapper/108:56:381
2699499301cyclictest0-21swapper/108:32:591
121550300irq/30-eth0_g0_0-21swapper/107:22:511
121450300irq/29-eth0_g0_1911-21runrttasks07:23:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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