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2026-06-24 - 18:22

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Wed Jun 24, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211060ksoftirqd/1121750irq/30-eth0_g0_10:30:041
121860ksoftirqd/1121650irq/29-eth0_g0_12:33:560
322072820chrt121650irq/29-eth0_g0_10:41:360
243532670sleep1121750irq/30-eth0_g0_07:58:441
121540ksoftirqd/1121750irq/30-eth0_g0_09:57:041
139972500sleep1121750irq/30-eth0_g0_09:28:411
139972500sleep1121750irq/30-eth0_g0_09:28:411
121500ksoftirqd/1121750irq/30-eth0_g0_12:30:011
121500ksoftirqd/1121750irq/30-eth0_g0_10:18:371
121500ksoftirqd/1121750irq/30-eth0_g0_10:18:371
121490ksoftirqd/1121650irq/29-eth0_g0_12:18:541
255482480sleep0121650irq/29-eth0_g0_12:26:470
121480ksoftirqd/1121750irq/30-eth0_g0_09:46:481
121480ksoftirqd/1121750irq/30-eth0_g0_07:29:040
121470ksoftirqd/1121650irq/29-eth0_g0_07:31:301
121460ksoftirqd/1121750irq/30-eth0_g0_11:17:431
121460ksoftirqd/1121750irq/30-eth0_g0_11:17:431
121460ksoftirqd/1121650irq/29-eth0_g0_07:25:231
121650450irq/29-eth0_g0_1964-21runrttasks07:13:270
121650450irq/29-eth0_g0_121ksoftirqd/110:34:040
121450ksoftirqd/1121650irq/29-eth0_g0_10:25:581
121450ksoftirqd/1121650irq/29-eth0_g0_07:21:441
121450ksoftirqd/1121650irq/29-eth0_g0_07:03:551
121450ksoftirqd/1121650irq/29-eth0_g0_07:03:551
36292440sleep0121650irq/29-eth0_g0_10:58:250
152412440sleep11219-21kworker/1:211:44:021
121750440irq/30-eth0_g0_1219-21kworker/1:209:39:001
121650440irq/29-eth0_g0_0-21swapper/007:07:080
121650440irq/29-eth0_g0_0-21swapper/007:07:080
121440ksoftirqd/1121650irq/29-eth0_g0_10:58:481
121440ksoftirqd/1121650irq/29-eth0_g0_10:13:421
121440ksoftirqd/1121650irq/29-eth0_g0_10:13:421
121440ksoftirqd/1121650irq/29-eth0_g0_09:11:550
121650430irq/29-eth0_g0_31ksoftirqd/009:39:020
121430ksoftirqd/1121750irq/30-eth0_g0_10:25:490
121430ksoftirqd/1121750irq/30-eth0_g0_09:45:310
121430ksoftirqd/1121750irq/30-eth0_g0_09:11:261
121430ksoftirqd/1121650irq/29-eth0_g0_12:05:071
121430ksoftirqd/1121650irq/29-eth0_g0_11:27:411
121430ksoftirqd/1121650irq/29-eth0_g0_10:09:070
121430ksoftirqd/1121650irq/29-eth0_g0_10:09:070
121750420irq/30-eth0_g0_71532sleep111:11:411
121750420irq/30-eth0_g0_1219-21kworker/1:210:46:461
121650420irq/29-eth0_g0_31ksoftirqd/010:30:090
121420ksoftirqd/1121650irq/29-eth0_g0_08:54:051
121750410irq/30-eth0_g0_254282sleep112:25:251
121750410irq/30-eth0_g0_1219-21kworker/1:212:37:521
121750410irq/30-eth0_g0_1219-21kworker/1:209:23:441
121650410irq/29-eth0_g0_13-21kworker/0:111:42:290
121650410irq/29-eth0_g0_13-21kworker/0:111:42:290
121650410irq/29-eth0_g0_13-21kworker/0:111:22:410
121650410irq/29-eth0_g0_13-21kworker/0:109:26:030
121650410irq/29-eth0_g0_13-21kworker/0:109:26:030
121650410irq/29-eth0_g0_13-21kworker/0:109:19:390
121650410irq/29-eth0_g0_0-21swapper/010:03:550
213562400sleep0121650irq/29-eth0_g0_09:58:430
121750400irq/30-eth0_g0_121ksoftirqd/110:00:491
121650400irq/29-eth0_g0_31ksoftirqd/012:28:580
121650400irq/29-eth0_g0_17238-21cpu11:53:530
121650400irq/29-eth0_g0_13-21kworker/0:111:48:480
121650400irq/29-eth0_g0_13-21kworker/0:111:14:060
121650400irq/29-eth0_g0_13-21kworker/0:111:14:060
121650400irq/29-eth0_g0_13-21kworker/0:110:17:210
121650400irq/29-eth0_g0_13-21kworker/0:110:17:210
121650400irq/29-eth0_g0_13-21kworker/0:109:16:470
121650400irq/29-eth0_g0_121ksoftirqd/112:03:200
1208099401cyclictest4194-21cat08:48:441
121400ksoftirqd/1121750irq/30-eth0_g0_11:34:180
121400ksoftirqd/1121750irq/30-eth0_g0_11:07:000
121400ksoftirqd/1121750irq/30-eth0_g0_09:04:430
121400ksoftirqd/1121750irq/30-eth0_g0_08:43:390
121400ksoftirqd/1121750irq/30-eth0_g0_08:19:240
121400ksoftirqd/1121750irq/30-eth0_g0_08:06:090
121400ksoftirqd/1121750irq/30-eth0_g0_08:06:090
121400ksoftirqd/1121750irq/30-eth0_g0_07:40:310
121400ksoftirqd/1121750irq/30-eth0_g0_07:37:280
121400ksoftirqd/1121650irq/29-eth0_g0_10:58:001
121400ksoftirqd/1121650irq/29-eth0_g0_07:14:331
121750390irq/30-eth0_g0_1219-21kworker/1:211:41:591
121750390irq/30-eth0_g0_1219-21kworker/1:211:41:591
121750390irq/30-eth0_g0_121ksoftirqd/111:58:031
121750390irq/30-eth0_g0_121ksoftirqd/110:49:391
121650390irq/29-eth0_g0_21454-21mailstats12:09:020
121650390irq/29-eth0_g0_13-21kworker/0:112:04:410
121650390irq/29-eth0_g0_13-21kworker/0:109:51:120
1208099392cyclictest5149-21/usr/sbin/munin11:03:561
1208099391cyclictest125782sleep111:33:581
121390ksoftirqd/1121750irq/30-eth0_g0_12:22:140
121390ksoftirqd/1121750irq/30-eth0_g0_11:46:370
121390ksoftirqd/1121750irq/30-eth0_g0_11:31:310
121390ksoftirqd/1121750irq/30-eth0_g0_11:00:560
121390ksoftirqd/1121750irq/30-eth0_g0_10:44:330
121390ksoftirqd/1121750irq/30-eth0_g0_09:37:150
121390ksoftirqd/1121750irq/30-eth0_g0_09:01:210
121390ksoftirqd/1121750irq/30-eth0_g0_08:13:280
121390ksoftirqd/1121750irq/30-eth0_g0_08:13:280
121390ksoftirqd/1121750irq/30-eth0_g0_07:28:440
121390ksoftirqd/1121650irq/29-eth0_g0_08:41:061
121390ksoftirqd/1121650irq/29-eth0_g0_08:14:030
121390ksoftirqd/1121650irq/29-eth0_g0_08:14:030
121750380irq/30-eth0_g0_0-21swapper/110:43:031
121650380irq/29-eth0_g0_31024-21proc_pri08:24:030
121650380irq/29-eth0_g0_31ksoftirqd/012:14:030
121650380irq/29-eth0_g0_31ksoftirqd/011:08:560
121650380irq/29-eth0_g0_13-21kworker/0:111:25:040
121650380irq/29-eth0_g0_13-21kworker/0:110:50:360
121650380irq/29-eth0_g0_121ksoftirqd/112:11:521
12080993832cyclictest22672-21/usr/sbin/munin10:04:051
1208099382cyclictest32343-21taskset08:29:031
1208099381cyclictest9096-21diskmemload11:30:561
1208099381cyclictest26602-21taskset10:18:571
161572370sleep1121650irq/29-eth0_g0_09:35:201
121750370irq/30-eth0_g0_1964-21runrttasks08:48:570
121750370irq/30-eth0_g0_1219-21kworker/1:212:17:151
121750370irq/30-eth0_g0_1219-21kworker/1:209:17:581
121750370irq/30-eth0_g0_121ksoftirqd/109:51:481
121650370irq/29-eth0_g0_22178-21vmstat09:59:060
121650370irq/29-eth0_g0_22035-21/usr/sbin/munin07:48:540
121650370irq/29-eth0_g0_1964-21runrttasks08:31:010
121650370irq/29-eth0_g0_13-21kworker/0:109:28:560
1208099372cyclictest1983-21/usr/sbin/munin08:38:441
1208099371cyclictest9096-21diskmemload12:00:241
1208099371cyclictest8719-21sed11:18:541
1208099371cyclictest21941-21grep07:48:441
1208099371cyclictest20063-21find07:39:041
121370ksoftirqd/1121750irq/30-eth0_g0_07:48:430
121370ksoftirqd/1121650irq/29-eth0_g0_10:35:181
121750360irq/30-eth0_g0_16297-21memory11:48:561
121750360irq/30-eth0_g0_1219-21kworker/1:209:31:351
121650360irq/29-eth0_g0_26818-21proc_pri10:19:010
121650360irq/29-eth0_g0_1964-21runrttasks07:23:000
1208099361cyclictest4833-21awk08:49:031
1208099361cyclictest277332sleep108:10:251
1208099361cyclictest277332sleep108:10:251
1208099361cyclictest0-21swapper/108:07:551
1208099361cyclictest0-21swapper/108:07:551
121650350irq/29-eth0_g0_3634-21timerandwakeup08:44:040
121650350irq/29-eth0_g0_1964-21runrttasks08:34:410
121650350irq/29-eth0_g0_1964-21runrttasks07:55:040
121650350irq/29-eth0_g0_0-21swapper/007:18:170
1208099351cyclictest30833-21wc08:23:591
1208099351cyclictest22604-21grep07:49:031
1208099351cyclictest12632-21ps07:09:031
121350ksoftirqd/1121750irq/30-eth0_g0_08:02:590
121350ksoftirqd/1121750irq/30-eth0_g0_08:02:590
121350ksoftirqd/1121650irq/29-eth0_g0_08:13:571
121350ksoftirqd/1121650irq/29-eth0_g0_08:13:571
121750340irq/30-eth0_g0_0-21swapper/108:19:031
1208099342cyclictest6640-21latency_hist08:58:451
1208099341cyclictest25098-21head07:59:051
1208099341cyclictest25098-21head07:59:051
1208099341cyclictest19490-21grep07:38:441
1208099341cyclictest0-21swapper/109:05:571
121650320irq/29-eth0_g0_6201-21unixbench_singl08:54:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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