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2025-11-26 - 10:43

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 Wed Nov 26, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
993721390sleep1121650irq/29-eth0_g0_00:27:091
121920ksoftirqd/1121750irq/30-eth0_g0_22:21:581
186292770sleep1121650irq/29-eth0_g0_20:39:381
117932620sleep0121750irq/30-eth0_g0_22:22:460
44552610sleep1121750irq/30-eth0_g0_19:39:561
196182570sleep0121650irq/29-eth0_g0_22:54:510
121550ksoftirqd/1121750irq/30-eth0_g0_00:07:181
121510ksoftirqd/1121750irq/30-eth0_g0_22:27:171
121510ksoftirqd/1121750irq/30-eth0_g0_00:01:541
107892500sleep0121750irq/30-eth0_g0_00:29:580
247092490sleep0121650irq/29-eth0_g0_23:14:570
121480ksoftirqd/1121750irq/30-eth0_g0_23:12:471
121480ksoftirqd/1121750irq/30-eth0_g0_23:12:471
121460ksoftirqd/1121750irq/30-eth0_g0_21:46:291
121750450irq/30-eth0_g0_707-21memory23:49:521
121750450irq/30-eth0_g0_110392sleep100:30:401
121750440irq/30-eth0_g0_121ksoftirqd/121:33:121
121440ksoftirqd/1121650irq/29-eth0_g0_22:50:581
121750430irq/30-eth0_g0_1219-21kworker/1:223:01:441
121750430irq/30-eth0_g0_1219-21kworker/1:222:55:581
121750430irq/30-eth0_g0_1219-21kworker/1:222:34:111
121750430irq/30-eth0_g0_1219-21kworker/1:221:53:381
121650430irq/29-eth0_g0_31ksoftirqd/023:32:040
121650430irq/29-eth0_g0_2386-21sed23:55:010
121650430irq/29-eth0_g0_0-21swapper/019:04:570
41250420irq/22-fsldma-c121ksoftirqd/121:14:481
121750420irq/30-eth0_g0_1219-21kworker/1:223:56:451
121750420irq/30-eth0_g0_121ksoftirqd/123:19:371
121650420irq/29-eth0_g0_31ksoftirqd/022:39:370
121650420irq/29-eth0_g0_13-21kworker/0:123:52:520
121650420irq/29-eth0_g0_13-21kworker/0:123:24:520
121420ksoftirqd/1121650irq/29-eth0_g0_21:56:551
121420ksoftirqd/1121650irq/29-eth0_g0_00:09:200
121750410irq/30-eth0_g0_31ksoftirqd/022:24:520
121650410irq/29-eth0_g0_1894-21runrttasks19:31:390
121650410irq/29-eth0_g0_13-21kworker/0:100:25:490
121650410irq/29-eth0_g0_121ksoftirqd/122:51:540
121410ksoftirqd/1121650irq/29-eth0_g0_20:39:431
121410ksoftirqd/1121650irq/29-eth0_g0_20:39:431
121410ksoftirqd/1121650irq/29-eth0_g0_19:58:251
2898399401cyclictest28185-21taskset23:29:511
2898399401cyclictest11925-21taskset20:10:021
121750400irq/30-eth0_g0_1219-21kworker/1:221:25:281
121750400irq/30-eth0_g0_0-21swapper/123:43:121
121650400irq/29-eth0_g0_68942sleep022:02:460
121650400irq/29-eth0_g0_31ksoftirqd/021:55:140
121650400irq/29-eth0_g0_2898299cyclictest22:59:450
121650400irq/29-eth0_g0_13-21kworker/0:121:24:470
121650400irq/29-eth0_g0_13-21kworker/0:121:23:090
121400ksoftirqd/1121750irq/30-eth0_g0_23:24:060
121400ksoftirqd/1121650irq/29-eth0_g0_23:07:251
121750390irq/30-eth0_g0_1219-21kworker/1:223:46:241
121750390irq/30-eth0_g0_1219-21kworker/1:223:26:161
121750390irq/30-eth0_g0_121ksoftirqd/122:15:401
121750390irq/30-eth0_g0_121ksoftirqd/122:13:541
121750390irq/30-eth0_g0_121ksoftirqd/119:13:441
121650390irq/29-eth0_g0_31ksoftirqd/023:37:500
121650390irq/29-eth0_g0_31ksoftirqd/023:11:370
121650390irq/29-eth0_g0_31ksoftirqd/023:11:370
121650390irq/29-eth0_g0_31ksoftirqd/021:34:590
121650390irq/29-eth0_g0_13-21kworker/0:122:40:550
121650390irq/29-eth0_g0_13-21kworker/0:122:31:250
121650390irq/29-eth0_g0_13-21kworker/0:122:14:550
121650390irq/29-eth0_g0_13-21kworker/0:122:07:280
121650390irq/29-eth0_g0_13-21kworker/0:121:39:520
121650390irq/29-eth0_g0_13-21kworker/0:121:29:520
121650390irq/29-eth0_g0_13-21kworker/0:100:19:490
121650390irq/29-eth0_g0_0-21swapper/023:44:530
121650390irq/29-eth0_g0_0-21swapper/020:59:530
121390ksoftirqd/1121750irq/30-eth0_g0_00:11:500
121390ksoftirqd/1121750irq/30-eth0_g0_00:11:500
121390ksoftirqd/1121750irq/30-eth0_g0_00:00:290
2898399382cyclictest17577-21unixbench_multi22:44:591
2898399381cyclictest6999-21zcat19:50:001
2898399381cyclictest29428-21latency23:34:521
2898399381cyclictest1636-21tail21:40:001
121750380irq/30-eth0_g0_121ksoftirqd/121:14:181
121650380irq/29-eth0_g0_7133-21unixbench_multi19:50:010
121650380irq/29-eth0_g0_3343-21mailstats19:35:000
121650380irq/29-eth0_g0_30560-21df_inode23:39:500
121650380irq/29-eth0_g0_13-21kworker/0:123:05:580
121650380irq/29-eth0_g0_13-21kworker/0:122:47:380
121650380irq/29-eth0_g0_13-21kworker/0:121:49:020
121650380irq/29-eth0_g0_13-21kworker/0:100:36:410
121650380irq/29-eth0_g0_121ksoftirqd/122:34:521
121650380irq/29-eth0_g0_121ksoftirqd/121:20:431
121380ksoftirqd/1121650irq/29-eth0_g0_22:40:591
2898399371cyclictest24810-21grep21:04:381
2898399371cyclictest229192sleep120:54:571
2898399371cyclictest15699-21unixbench_multi20:25:001
121750370irq/30-eth0_g0_28161-21missed_timers19:04:541
121750370irq/30-eth0_g0_1219-21kworker/1:223:20:301
121750370irq/30-eth0_g0_1219-21kworker/1:221:35:261
121750370irq/30-eth0_g0_1219-21kworker/1:200:34:571
121750370irq/30-eth0_g0_1219-21kworker/1:200:14:421
121750370irq/30-eth0_g0_1219-21kworker/1:200:14:421
121650370irq/29-eth0_g0_982-21grep19:25:010
121650370irq/29-eth0_g0_30846-21chrt19:14:560
121650370irq/29-eth0_g0_26059-21taskset21:09:390
121650370irq/29-eth0_g0_1894-21runrttasks20:50:040
121650370irq/29-eth0_g0_13-21kworker/0:121:51:400
121650370irq/29-eth0_g0_13-21kworker/0:121:18:230
121650370irq/29-eth0_g0_0-21swapper/000:17:340
121650370irq/29-eth0_g0_0-21swapper/000:17:340
121370ksoftirqd/1121650irq/29-eth0_g0_22:00:001
2898399361cyclictest9171-21sort19:59:541
2898399361cyclictest8438-21unixbench_multi00:20:011
2898399361cyclictest320902sleep119:19:581
2898399361cyclictest21806-21unixbench_multi20:50:001
121750360irq/30-eth0_g0_1219-21kworker/1:222:08:121
121750360irq/30-eth0_g0_1219-21kworker/1:200:12:021
121750360irq/30-eth0_g0_1219-21kworker/1:200:12:021
121650360irq/29-eth0_g0_8773-21ntpq22:09:580
121650360irq/29-eth0_g0_5701-21proc_pri19:44:570
121650360irq/29-eth0_g0_24843-21/usr/sbin/munin21:04:550
121650360irq/29-eth0_g0_10677-21sendmail_mailqu20:04:570
28983993530cyclictest13953-21df_abs20:19:491
2898399351cyclictest5880-21sed19:44:591
2898399351cyclictest25134-21memory21:04:521
2898399351cyclictest2194-21unixbench_multi19:30:011
2898399351cyclictest11310-21cat20:09:381
2898399351cyclictest0-21swapper/120:49:371
121650350irq/29-eth0_g0_8159-21ps19:54:560
121650350irq/29-eth0_g0_32154-21grep19:19:590
121650350irq/29-eth0_g0_29478-21ntp_states19:09:570
121650350irq/29-eth0_g0_20647-21unixbench_singl20:45:000
121650350irq/29-eth0_g0_18953-21irqstats20:39:520
121650350irq/29-eth0_g0_18953-21irqstats20:39:520
121650350irq/29-eth0_g0_1894-21runrttasks20:25:460
121650350irq/29-eth0_g0_18160-21unixbench_multi20:35:010
121650350irq/29-eth0_g0_14218-21ntp_states20:19:550
121650350irq/29-eth0_g0_13297-21unixbench_singl20:15:010
121650350irq/29-eth0_g0_11606-21iostat20:09:550
121350ksoftirqd/1121650irq/29-eth0_g0_19:34:541
2898399341cyclictest701-21taskset19:24:571
121750340irq/30-eth0_g0_30537-21cat19:14:501
121650340irq/29-eth0_g0_5111-21runrttasks19:44:140
121650340irq/29-eth0_g0_16405-21df_abs20:29:500
121650340irq/29-eth0_g0_0-21swapper/019:59:570
121650330irq/29-eth0_g0_22862-21proc_pri20:54:560
2898399321cyclictest0-21swapper/120:33:291
2898399321cyclictest0-21swapper/120:14:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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