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2026-03-17 - 22:13

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 Tue Mar 17, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
589221120sleep0121750irq/30-eth0_g0_09:54:200
111392960sleep0121650irq/29-eth0_g0_12:25:100
111392960sleep0121650irq/29-eth0_g0_12:25:100
143512930sleep0121650irq/29-eth0_g0_10:27:540
121850ksoftirqd/1121650irq/29-eth0_g0_09:45:030
291302830sleep1121750irq/30-eth0_g0_11:28:391
121780ksoftirqd/1121750irq/30-eth0_g0_12:22:420
99342670chrt121650irq/29-eth0_g0_12:20:251
230422630chrt121750irq/30-eth0_g0_08:50:001
230422630chrt121750irq/30-eth0_g0_08:50:001
316502620sleep0121750irq/30-eth0_g0_11:39:210
121560ksoftirqd/1121750irq/30-eth0_g0_09:21:400
121510ksoftirqd/1121650irq/29-eth0_g0_10:20:010
121510ksoftirqd/1121650irq/29-eth0_g0_10:20:010
121500ksoftirqd/1121650irq/29-eth0_g0_09:40:501
121500ksoftirqd/1121650irq/29-eth0_g0_07:34:590
121490ksoftirqd/1121750irq/30-eth0_g0_09:57:360
121480ksoftirqd/1121750irq/30-eth0_g0_09:04:421
41242460sleep1121650irq/29-eth0_g0_11:59:101
121750450irq/30-eth0_g0_470-21kworker/1:111:18:321
121750450irq/30-eth0_g0_470-21kworker/1:109:54:101
121750450irq/30-eth0_g0_121ksoftirqd/112:30:061
121650450irq/29-eth0_g0_121ksoftirqd/111:51:340
121450ksoftirqd/1121650irq/29-eth0_g0_08:01:031
121750430irq/30-eth0_g0_470-21kworker/1:111:33:431
121750430irq/30-eth0_g0_470-21kworker/1:110:58:291
121750430irq/30-eth0_g0_470-21kworker/1:109:45:511
121750430irq/30-eth0_g0_121ksoftirqd/112:15:561
121750430irq/30-eth0_g0_121ksoftirqd/107:42:001
121750430irq/30-eth0_g0_0-21swapper/109:24:421
121650430irq/29-eth0_g0_2029-21runrttasks07:05:280
121430ksoftirqd/1121650irq/29-eth0_g0_11:48:181
121430ksoftirqd/1121650irq/29-eth0_g0_08:34:430
265822420sleep0121650irq/29-eth0_g0_11:17:330
121750420irq/30-eth0_g0_470-21kworker/1:110:50:001
121750420irq/30-eth0_g0_470-21kworker/1:109:38:251
121750420irq/30-eth0_g0_470-21kworker/1:109:31:081
121650420irq/29-eth0_g0_121ksoftirqd/110:41:571
121650420irq/29-eth0_g0_121ksoftirqd/109:15:270
83352411sleep18449-21unixbench_singl07:50:041
121750410irq/30-eth0_g0_470-21kworker/1:110:20:021
121750410irq/30-eth0_g0_470-21kworker/1:110:20:021
121750410irq/30-eth0_g0_470-21kworker/1:110:11:531
121650410irq/29-eth0_g0_279942sleep011:24:400
121650410irq/29-eth0_g0_279942sleep011:24:400
121410ksoftirqd/1121750irq/30-eth0_g0_10:38:091
121650400irq/29-eth0_g0_13-21kworker/0:112:12:240
121650400irq/29-eth0_g0_13-21kworker/0:111:42:360
121400ksoftirqd/1121750irq/30-eth0_g0_09:38:310
319852390sleep0121750irq/30-eth0_g0_09:27:100
121750390irq/30-eth0_g0_470-21kworker/1:111:40:111
121750390irq/30-eth0_g0_470-21kworker/1:111:12:391
121750390irq/30-eth0_g0_470-21kworker/1:111:07:051
121750390irq/30-eth0_g0_470-21kworker/1:110:44:501
121750390irq/30-eth0_g0_121ksoftirqd/110:29:591
121750390irq/30-eth0_g0_121ksoftirqd/109:11:381
121750390irq/30-eth0_g0_0-21swapper/109:25:431
121650390irq/29-eth0_g0_7811-21df_abs07:49:530
121650390irq/29-eth0_g0_2029-21runrttasks09:14:140
121650390irq/29-eth0_g0_13-21kworker/0:110:35:010
121390ksoftirqd/1121750irq/30-eth0_g0_10:06:121
121750380irq/30-eth0_g0_470-21kworker/1:112:10:251
121750380irq/30-eth0_g0_470-21kworker/1:112:04:001
121750380irq/30-eth0_g0_470-21kworker/1:111:24:251
121750380irq/30-eth0_g0_470-21kworker/1:111:24:251
121750380irq/30-eth0_g0_470-21kworker/1:110:28:111
121750380irq/30-eth0_g0_470-21kworker/1:110:18:341
121750380irq/30-eth0_g0_470-21kworker/1:109:57:231
121750380irq/30-eth0_g0_470-21kworker/1:109:16:321
121750380irq/30-eth0_g0_31964-21ntp_offset07:14:591
121650380irq/29-eth0_g0_63092sleep012:06:030
121650380irq/29-eth0_g0_5982-21unixbench_singl07:40:040
121650380irq/29-eth0_g0_22473-21/usr/sbin/munin08:49:560
121650380irq/29-eth0_g0_22473-21/usr/sbin/munin08:49:560
121650380irq/29-eth0_g0_2029-21runrttasks09:08:080
121650380irq/29-eth0_g0_13-21kworker/0:112:15:070
121650380irq/29-eth0_g0_13-21kworker/0:111:55:400
121650380irq/29-eth0_g0_13-21kworker/0:111:01:070
121650380irq/29-eth0_g0_13-21kworker/0:110:58:230
121650380irq/29-eth0_g0_13-21kworker/0:110:32:100
121650380irq/29-eth0_g0_13-21kworker/0:110:00:030
121380ksoftirqd/1121750irq/30-eth0_g0_11:32:380
121380ksoftirqd/1121750irq/30-eth0_g0_11:00:141
121380ksoftirqd/1121750irq/30-eth0_g0_10:52:070
121750370irq/30-eth0_g0_7660-21seq09:59:591
121750370irq/30-eth0_g0_470-21kworker/1:112:37:571
121750370irq/30-eth0_g0_470-21kworker/1:112:08:341
121750370irq/30-eth0_g0_470-21kworker/1:111:35:041
121750370irq/30-eth0_g0_31ksoftirqd/012:29:420
121750370irq/30-eth0_g0_121ksoftirqd/112:28:121
121750370irq/30-eth0_g0_121ksoftirqd/112:28:121
121650370irq/29-eth0_g0_9070-21ls10:05:030
121650370irq/29-eth0_g0_3020-21grep09:40:040
121650370irq/29-eth0_g0_25636-21unixbench_singl09:00:050
121650370irq/29-eth0_g0_2029-21runrttasks07:49:140
121650370irq/29-eth0_g0_18240-21latency_hist10:44:430
121650370irq/29-eth0_g0_13-21kworker/0:111:10:270
121650370irq/29-eth0_g0_13-21kworker/0:110:15:540
3025299368cyclictest121750irq/30-eth0_g0_11:54:081
121750360irq/30-eth0_g0_29377-21taskset07:04:571
121650360irq/29-eth0_g0_9433-21proc_pri07:55:010
121650360irq/29-eth0_g0_3152-21missed_timers07:29:590
121650360irq/29-eth0_g0_31478-21munin-run07:14:420
121650360irq/29-eth0_g0_28611-21processes11:25:030
121650360irq/29-eth0_g0_2029-21runrttasks08:39:050
121650360irq/29-eth0_g0_2029-21runrttasks08:26:040
121650360irq/29-eth0_g0_15749-21tail08:20:030
121650360irq/29-eth0_g0_13-21kworker/0:109:30:550
121650360irq/29-eth0_g0_10228-21sendmail_mailqu10:10:010
121650360irq/29-eth0_g0_0-21swapper/012:37:540
121650360irq/29-eth0_g0_0-21swapper/007:17:340
121360ksoftirqd/1121750irq/30-eth0_g0_10:45:530
121650350irq/29-eth0_g0_983-21unixbench_multi07:20:040
121650350irq/29-eth0_g0_23315-21df11:04:540
121650350irq/29-eth0_g0_2029-21runrttasks08:46:480
121650350irq/29-eth0_g0_2029-21runrttasks08:41:310
121650350irq/29-eth0_g0_2029-21runrttasks08:02:260
121650350irq/29-eth0_g0_14518-21unixbench_multi08:15:040
121650350irq/29-eth0_g0_13345-21unixbench_singl08:10:050
121650350irq/29-eth0_g0_13-21kworker/0:112:01:350
121650350irq/29-eth0_g0_13-21kworker/0:111:48:340
121650350irq/29-eth0_g0_12050-21unixbench_multi08:05:030
121350ksoftirqd/1121750irq/30-eth0_g0_07:34:201
121350ksoftirqd/1121650irq/29-eth0_g0_08:14:571
121750340irq/30-eth0_g0_20703-21grep08:40:031
121650340irq/29-eth0_g0_23833-21df_abs08:54:570
121650340irq/29-eth0_g0_1967-21netstat07:25:000
121650340irq/29-eth0_g0_121ksoftirqd/108:26:091
121340ksoftirqd/122124-21taskset08:46:431
121330ksoftirqd/119509-21runrttasks08:35:041
121750320irq/30-eth0_g0_7055-21sendmail_mailqu07:45:021
121650320irq/29-eth0_g0_4648-21timerandwakeup07:35:031
121320ksoftirqd/115113-21egrep08:19:521
121750310irq/30-eth0_g0_2029-21runrttasks07:10:171
121750310irq/30-eth0_g0_13120-21proc_pri08:10:031
121750310irq/30-eth0_g0_0-21swapper/109:08:331
121750300irq/30-eth0_g0_12136-21sed08:05:031
121750300irq/30-eth0_g0_0-21swapper/108:54:511
121650300irq/29-eth0_g0_3025299cyclictest08:30:001
121750280irq/30-eth0_g0_9042-21df07:54:541
121750280irq/30-eth0_g0_2029-21runrttasks07:22:321
121650280irq/29-eth0_g0_2141-21find07:25:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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