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2026-07-06 - 21:57

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 Jul 06, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1908621600sleep0121650irq/29-eth0_g0_12:26:010
121880ksoftirqd/1121750irq/30-eth0_g0_08:48:291
121850ksoftirqd/1121750irq/30-eth0_g0_11:18:161
121670ksoftirqd/1317702sleep008:53:300
154982660sleep1121650irq/29-eth0_g0_12:12:021
177422610sleep1121750irq/30-eth0_g0_12:19:361
109502580sleep1121650irq/29-eth0_g0_09:39:541
45602530sleep1121750irq/30-eth0_g0_11:28:141
121650490irq/29-eth0_g0_5011-21rt-features07:03:350
121480ksoftirqd/1121750irq/30-eth0_g0_12:02:101
121480ksoftirqd/1121650irq/29-eth0_g0_09:41:120
121470ksoftirqd/1121750irq/30-eth0_g0_11:13:591
121470ksoftirqd/1121750irq/30-eth0_g0_10:30:411
32962460sleep0121650irq/29-eth0_g0_11:22:480
246052450sleep0121650irq/29-eth0_g0_10:36:580
121750450irq/30-eth0_g0_1219-21kworker/1:209:18:301
121650450irq/29-eth0_g0_30027-21missed_timers10:58:290
121450ksoftirqd/1121750irq/30-eth0_g0_10:15:171
121750440irq/30-eth0_g0_6669-21runrttasks11:34:121
121750440irq/30-eth0_g0_13209-21unixbench_multi09:48:351
121750430irq/30-eth0_g0_1219-21kworker/1:211:46:041
121650430irq/29-eth0_g0_31ksoftirqd/009:33:450
121650430irq/29-eth0_g0_17662sleep011:14:290
121650430irq/29-eth0_g0_16207-21grep07:48:360
121650430irq/29-eth0_g0_121ksoftirqd/112:33:221
121650430irq/29-eth0_g0_121ksoftirqd/110:43:280
121430ksoftirqd/1121750irq/30-eth0_g0_11:43:280
121430ksoftirqd/1121750irq/30-eth0_g0_11:23:360
121430ksoftirqd/1121650irq/29-eth0_g0_09:23:461
121650420irq/29-eth0_g0_13-21kworker/0:111:52:250
121420ksoftirqd/1121650irq/29-eth0_g0_09:33:321
121750410irq/30-eth0_g0_1219-21kworker/1:210:33:341
121750410irq/30-eth0_g0_1219-21kworker/1:210:12:041
121750410irq/30-eth0_g0_121ksoftirqd/109:32:211
121650410irq/29-eth0_g0_13-21kworker/0:110:42:180
121650410irq/29-eth0_g0_13-21kworker/0:110:22:530
121650410irq/29-eth0_g0_13-21kworker/0:109:51:550
121650410irq/29-eth0_g0_121ksoftirqd/111:39:341
121650410irq/29-eth0_g0_121ksoftirqd/111:39:341
121410ksoftirqd/1121650irq/29-eth0_g0_08:47:581
6632400sleep0121750irq/30-eth0_g0_11:11:100
563099408cyclictest121750irq/30-eth0_g0_09:16:471
563099402cyclictest20479-21/usr/sbin/munin10:18:351
563099401cyclictest13315-21df_abs12:03:271
31400ksoftirqd/04824-21forks11:28:270
215162400sleep1121750irq/30-eth0_g0_10:23:341
121750400irq/30-eth0_g0_1219-21kworker/1:212:25:411
121750400irq/30-eth0_g0_1219-21kworker/1:211:02:371
121750400irq/30-eth0_g0_1219-21kworker/1:210:55:561
121750400irq/30-eth0_g0_1219-21kworker/1:210:55:561
121750400irq/30-eth0_g0_121ksoftirqd/109:57:181
121650400irq/29-eth0_g0_17474-21sendmail_mailtr12:18:340
121650400irq/29-eth0_g0_13-21kworker/0:111:04:090
121650400irq/29-eth0_g0_13-21kworker/0:110:52:410
121650400irq/29-eth0_g0_13-21kworker/0:110:28:200
121650400irq/29-eth0_g0_13-21kworker/0:110:14:420
121650400irq/29-eth0_g0_13-21kworker/0:110:10:480
121650400irq/29-eth0_g0_13-21kworker/0:110:06:560
121650400irq/29-eth0_g0_13-21kworker/0:110:01:460
121650400irq/29-eth0_g0_13-21kworker/0:110:01:460
121650400irq/29-eth0_g0_13-21kworker/0:109:29:450
121650400irq/29-eth0_g0_121ksoftirqd/110:24:470
121400ksoftirqd/1121650irq/29-eth0_g0_12:16:301
121400ksoftirqd/1121650irq/29-eth0_g0_11:52:381
121400ksoftirqd/1121650irq/29-eth0_g0_09:11:451
121400ksoftirqd/1121650irq/29-eth0_g0_09:11:451
563099398cyclictest121750irq/30-eth0_g0_10:45:291
563099391cyclictest17872sleep109:03:291
121750390irq/30-eth0_g0_1219-21kworker/1:212:30:111
121750390irq/30-eth0_g0_1219-21kworker/1:212:30:111
121750390irq/30-eth0_g0_121ksoftirqd/111:31:271
121750390irq/30-eth0_g0_121ksoftirqd/111:12:581
121750390irq/30-eth0_g0_121ksoftirqd/111:03:301
121650390irq/29-eth0_g0_13-21kworker/0:112:11:260
121650390irq/29-eth0_g0_13-21kworker/0:112:00:250
121650390irq/29-eth0_g0_13-21kworker/0:111:54:440
121650390irq/29-eth0_g0_13-21kworker/0:111:38:170
121650390irq/29-eth0_g0_13-21kworker/0:111:38:170
121650390irq/29-eth0_g0_13-21kworker/0:111:33:400
121650390irq/29-eth0_g0_13-21kworker/0:109:55:450
121650390irq/29-eth0_g0_0-21swapper/009:24:480
121390ksoftirqd/141350irq/23-fsldma-c09:43:250
563099381cyclictest25463-21unixbench_multi10:38:341
563099381cyclictest17890-21latency_hist07:58:141
563099381cyclictest17890-21latency_hist07:58:141
121750380irq/30-eth0_g0_1219-21kworker/1:211:53:371
121750380irq/30-eth0_g0_1219-21kworker/1:210:49:121
121750380irq/30-eth0_g0_0-21swapper/110:02:251
121750380irq/30-eth0_g0_0-21swapper/110:02:251
121650380irq/29-eth0_g0_47492sleep009:14:100
121650380irq/29-eth0_g0_22194-21rt-features08:13:350
121650380irq/29-eth0_g0_13-21kworker/0:112:29:480
121650380irq/29-eth0_g0_13-21kworker/0:112:29:480
121650380irq/29-eth0_g0_13-21kworker/0:112:13:350
121650380irq/29-eth0_g0_13-21kworker/0:112:07:550
121380ksoftirqd/1121650irq/29-eth0_g0_08:57:021
5630993733cyclictest0-21swapper/107:33:091
563099372cyclictest2109-21lldpd07:33:591
563099372cyclictest14256-21cut07:43:141
563099371cyclictest27932-21sed08:38:261
563099371cyclictest23596-21unixbench_singl08:18:391
563099371cyclictest0-21swapper/107:28:141
121650370irq/29-eth0_g0_25472-21sed08:28:250
121650370irq/29-eth0_g0_2109-21lldpd10:55:220
121650370irq/29-eth0_g0_2109-21lldpd10:55:220
121650370irq/29-eth0_g0_19856-21grep08:03:350
121650370irq/29-eth0_g0_1964-21runrttasks09:04:200
121650370irq/29-eth0_g0_13-21kworker/0:112:33:360
121650370irq/29-eth0_g0_13-21kworker/0:109:19:010
121650370irq/29-eth0_g0_13-21kworker/0:109:10:290
121650370irq/29-eth0_g0_13-21kworker/0:109:10:290
121370ksoftirqd/1121750irq/30-eth0_g0_09:43:351
121370ksoftirqd/1121750irq/30-eth0_g0_08:19:500
121370ksoftirqd/1121750irq/30-eth0_g0_07:18:350
5630993631cyclictest7608-21grep07:13:371
563099362cyclictest16925-21unixbench_singl10:03:351
563099361cyclictest1964-21runrttasks08:26:091
563099361cyclictest14420-21df_abs07:43:261
563099361cyclictest0-21swapper/108:29:551
121650360irq/29-eth0_g0_30894-21unixbench_multi08:48:360
121650360irq/29-eth0_g0_1964-21runrttasks08:44:230
121360ksoftirqd/1121750irq/30-eth0_g0_08:00:010
121360ksoftirqd/1121750irq/30-eth0_g0_07:56:080
121360ksoftirqd/1121750irq/30-eth0_g0_07:56:080
563099351cyclictest6428-21grep07:08:431
563099351cyclictest197882sleep108:03:341
563099351cyclictest0-21swapper/108:35:581
121750350irq/30-eth0_g0_15665-21sed07:48:261
121650350irq/29-eth0_g0_562999cyclictest07:38:360
121650350irq/29-eth0_g0_1964-21runrttasks09:01:570
121650350irq/29-eth0_g0_15039-21vmstat07:43:370
121350ksoftirqd/1121750irq/30-eth0_g0_07:29:540
121350ksoftirqd/1121750irq/30-eth0_g0_07:13:480
5630993419cyclictest18441-21proc_pri07:58:311
563099341cyclictest21905-21taskset08:13:301
121750340irq/30-eth0_g0_4547-21df07:03:261
121650340irq/29-eth0_g0_27706-21munin-run08:38:140
121650340irq/29-eth0_g0_20674-21irqstats08:08:280
121650340irq/29-eth0_g0_0-21swapper/007:08:400
5630993318cyclictest1457-21grep09:03:151
563099331cyclictest0-21swapper/107:18:321
121750330irq/30-eth0_g0_21063-21grep08:08:341
121650330irq/29-eth0_g0_28338-21find08:38:340
121650330irq/29-eth0_g0_12393-21sendmail_mailqu07:33:340
121650330irq/29-eth0_g0_0-21swapper/007:23:340
121650320irq/29-eth0_g0_24331-21/usr/sbin/munin08:23:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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