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2026-08-16 - 21:17

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 Sun Aug 16, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2891121750sleep1121650irq/29-eth0_g0_09:41:071
682921610sleep1121750irq/30-eth0_g0_10:21:541
273632760sleep1121750irq/30-eth0_g0_09:32:181
121520ksoftirqd/1281772sleep011:49:450
121510ksoftirqd/1121750irq/30-eth0_g0_11:17:191
121500ksoftirqd/1121750irq/30-eth0_g0_11:09:191
121490ksoftirqd/1121750irq/30-eth0_g0_11:59:021
327282480sleep1121750irq/30-eth0_g0_07:41:581
323032480sleep1121650irq/29-eth0_g0_09:52:541
121480ksoftirqd/1121750irq/30-eth0_g0_09:59:531
121470ksoftirqd/1121750irq/30-eth0_g0_11:33:521
121470ksoftirqd/1121650irq/29-eth0_g0_07:40:181
121460ksoftirqd/1121650irq/29-eth0_g0_11:16:141
121450ksoftirqd/1121750irq/30-eth0_g0_11:24:441
121450ksoftirqd/1121650irq/29-eth0_g0_11:10:200
121450ksoftirqd/1121650irq/29-eth0_g0_10:54:561
121750440irq/30-eth0_g0_22703-21/usr/sbin/munin07:01:541
121750440irq/30-eth0_g0_22703-21/usr/sbin/munin07:01:541
121750440irq/30-eth0_g0_1219-21kworker/1:211:41:521
121650440irq/29-eth0_g0_1964-21runrttasks11:35:410
121650440irq/29-eth0_g0_1964-21runrttasks10:19:170
121440ksoftirqd/1121750irq/30-eth0_g0_12:11:221
121440ksoftirqd/1121750irq/30-eth0_g0_12:03:471
121440ksoftirqd/1121750irq/30-eth0_g0_11:29:081
121440ksoftirqd/1121650irq/29-eth0_g0_11:56:041
121440ksoftirqd/1121650irq/29-eth0_g0_11:56:041
121440ksoftirqd/1121650irq/29-eth0_g0_11:02:071
121440ksoftirqd/1121650irq/29-eth0_g0_08:36:581
121750430irq/30-eth0_g0_264012sleep109:30:231
121750430irq/30-eth0_g0_1219-21kworker/1:210:59:111
121750430irq/30-eth0_g0_1219-21kworker/1:209:23:401
121750430irq/30-eth0_g0_1219-21kworker/1:209:23:401
121650430irq/29-eth0_g0_22364-21df07:01:490
121650430irq/29-eth0_g0_22364-21df07:01:490
121430ksoftirqd/1121750irq/30-eth0_g0_10:47:111
121430ksoftirqd/1121650irq/29-eth0_g0_10:03:351
121750420irq/30-eth0_g0_1219-21kworker/1:209:16:141
54322410sleep1121650irq/29-eth0_g0_12:28:401
121650410irq/29-eth0_g0_281922nfs_client09:36:520
121650410irq/29-eth0_g0_20108-21latency11:16:510
121650410irq/29-eth0_g0_121ksoftirqd/112:11:150
121650410irq/29-eth0_g0_121ksoftirqd/109:48:440
121410ksoftirqd/1121750irq/30-eth0_g0_11:51:560
121410ksoftirqd/1121750irq/30-eth0_g0_11:51:560
121410ksoftirqd/1121650irq/29-eth0_g0_12:34:211
121410ksoftirqd/1121650irq/29-eth0_g0_11:51:351
121410ksoftirqd/1121650irq/29-eth0_g0_10:13:561
121410ksoftirqd/1121650irq/29-eth0_g0_10:11:081
73562400sleep0121750irq/30-eth0_g0_10:24:300
30892400sleep0121750irq/30-eth0_g0_12:19:470
2344599401cyclictest2040-21sort07:51:351
121750400irq/30-eth0_g0_24996-21irqstats11:36:471
121750400irq/30-eth0_g0_1219-21kworker/1:209:21:261
121650400irq/29-eth0_g0_31ksoftirqd/010:26:530
121650400irq/29-eth0_g0_13-21kworker/0:111:04:060
121400ksoftirqd/1121750irq/30-eth0_g0_10:11:370
121400ksoftirqd/1121650irq/29-eth0_g0_12:18:391
2344599391cyclictest5925-21sed08:06:481
2344599391cyclictest20376-21diskmemload09:41:431
121750390irq/30-eth0_g0_1219-21kworker/1:209:50:051
121650390irq/29-eth0_g0_317432sleep012:03:340
121650390irq/29-eth0_g0_31ksoftirqd/010:51:480
121650390irq/29-eth0_g0_23861-21missed_timers07:06:520
121650390irq/29-eth0_g0_1964-21runrttasks08:37:060
121650390irq/29-eth0_g0_13-21kworker/0:112:35:460
121650390irq/29-eth0_g0_13-21kworker/0:112:12:570
121650390irq/29-eth0_g0_13-21kworker/0:111:42:120
121650390irq/29-eth0_g0_13-21kworker/0:109:18:070
121650390irq/29-eth0_g0_13-21kworker/0:109:15:080
121390ksoftirqd/1121750irq/30-eth0_g0_09:52:370
121390ksoftirqd/1121750irq/30-eth0_g0_09:04:440
121390ksoftirqd/1121750irq/30-eth0_g0_09:04:440
2344599383cyclictest20761-21memory09:06:501
2344599381cyclictest26386-21taskset07:16:531
2344599381cyclictest24195-21grep07:06:591
121750380irq/30-eth0_g0_1219-21kworker/1:212:25:561
121650380irq/29-eth0_g0_26372-21ntpdc07:16:520
121650380irq/29-eth0_g0_1964-21runrttasks08:32:480
121650380irq/29-eth0_g0_1964-21runrttasks07:58:130
121650380irq/29-eth0_g0_13-21kworker/0:111:59:010
121650380irq/29-eth0_g0_13-21kworker/0:110:38:180
121650380irq/29-eth0_g0_13-21kworker/0:110:33:160
121650380irq/29-eth0_g0_13-21kworker/0:109:27:330
121650380irq/29-eth0_g0_13-21kworker/0:109:22:490
121650380irq/29-eth0_g0_13-21kworker/0:109:22:490
121380ksoftirqd/1121750irq/30-eth0_g0_11:27:460
121380ksoftirqd/1121750irq/30-eth0_g0_10:00:220
121380ksoftirqd/1121750irq/30-eth0_g0_07:35:210
121380ksoftirqd/1121750irq/30-eth0_g0_07:35:210
121750370irq/30-eth0_g0_1574-21unixbench_singl12:11:591
121750370irq/30-eth0_g0_1219-21kworker/1:210:33:261
121750370irq/30-eth0_g0_121ksoftirqd/110:38:131
121750370irq/30-eth0_g0_121ksoftirqd/110:29:571
121650370irq/29-eth0_g0_7550-21find08:11:570
121650370irq/29-eth0_g0_4493-21cat12:26:350
121650370irq/29-eth0_g0_1964-21runrttasks07:54:480
121650370irq/29-eth0_g0_1964-21runrttasks07:50:270
121650370irq/29-eth0_g0_1964-21runrttasks07:40:150
121650370irq/29-eth0_g0_15596-21unixbench_multi10:56:580
121650370irq/29-eth0_g0_13-21kworker/0:111:37:130
121650370irq/29-eth0_g0_13-21kworker/0:111:12:270
121650370irq/29-eth0_g0_13-21kworker/0:110:48:200
121650370irq/29-eth0_g0_13-21kworker/0:110:08:430
121650370irq/29-eth0_g0_13-21kworker/0:110:01:380
121650370irq/29-eth0_g0_13-21kworker/0:109:46:140
121650370irq/29-eth0_g0_13-21kworker/0:109:10:470
121650370irq/29-eth0_g0_11683-21ntpdc10:41:550
121650370irq/29-eth0_g0_11683-21ntpdc10:41:550
121370ksoftirqd/1121650irq/29-eth0_g0_10:42:001
121370ksoftirqd/1121650irq/29-eth0_g0_10:42:001
2344599362cyclictest15585-21/usr/sbin/munin08:46:501
2344599361cyclictest2424-21cat07:51:521
2344599361cyclictest2109-21lldpd10:17:461
2344599361cyclictest18709-21unixbench_singl08:56:581
2344599361cyclictest14364-21egrep08:41:471
121650360irq/29-eth0_g0_9462-21/usr/sbin/munin08:21:470
121650360irq/29-eth0_g0_4552-21/usr/sbin/munin12:26:470
121650360irq/29-eth0_g0_25421-21sed07:11:580
121650360irq/29-eth0_g0_2344499cyclictest08:16:550
121650360irq/29-eth0_g0_1964-21runrttasks09:00:580
121650360irq/29-eth0_g0_1964-21runrttasks08:45:370
121650360irq/29-eth0_g0_1964-21runrttasks08:02:270
121650360irq/29-eth0_g0_13-21kworker/0:109:31:430
2344599352cyclictest17329-21rt-features08:51:561
2344599351cyclictest20376-21diskmemload09:06:341
2344599351cyclictest20376-21diskmemload09:06:341
121650350irq/29-eth0_g0_1964-21runrttasks11:26:240
121650350irq/29-eth0_g0_1964-21runrttasks08:53:570
121650350irq/29-eth0_g0_1964-21runrttasks08:26:390
121650350irq/29-eth0_g0_1964-21runrttasks07:42:260
121650350irq/29-eth0_g0_12683-21runrttasks08:32:261
121350ksoftirqd/125282-21processes07:11:561
121350ksoftirqd/1121750irq/30-eth0_g0_07:31:320
2344599341cyclictest4815-21wc08:01:491
121750340irq/30-eth0_g0_10105-21unixbench_multi08:21:581
121650340irq/29-eth0_g0_1964-21runrttasks08:47:310
121650340irq/29-eth0_g0_1964-21runrttasks08:08:300
121650340irq/29-eth0_g0_1964-21runrttasks07:23:110
2344599331cyclictest0-21swapper/108:20:251
2344599331cyclictest0-21swapper/107:24:171
121750330irq/30-eth0_g0_7669-21unixbench_multi08:11:591
121650330irq/29-eth0_g0_2344599cyclictest07:26:571
2344599321cyclictest0-21swapper/107:34:091
2344599321cyclictest0-21swapper/107:34:091
121320ksoftirqd/1121650irq/29-eth0_g0_07:59:291
121750310irq/30-eth0_g0_0-21swapper/108:26:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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