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2026-04-02 - 13:58

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 Thu Apr 02, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1369521540sleep1121650irq/29-eth0_g0_10:09:151
2201021170sleep1121650irq/29-eth0_g0_10:41:131
121990ksoftirqd/1121750irq/30-eth0_g0_10:28:311
257242910sleep1121750irq/30-eth0_g0_10:56:401
121900ksoftirqd/1121750irq/30-eth0_g0_10:38:081
121810ksoftirqd/1121750irq/30-eth0_g0_07:20:091
150142790sleep1121750irq/30-eth0_g0_12:24:581
66842690sleep1121750irq/30-eth0_g0_11:50:271
121670ksoftirqd/1121650irq/29-eth0_g0_08:14:511
121590ksoftirqd/1121650irq/29-eth0_g0_12:09:571
103912560sleep1121750irq/30-eth0_g0_12:05:511
121520ksoftirqd/1121750irq/30-eth0_g0_11:46:300
246162510sleep1121650irq/29-eth0_g0_10:53:011
121510ksoftirqd/1121650irq/29-eth0_g0_09:14:541
88072500sleep1121750irq/30-eth0_g0_09:49:241
121500ksoftirqd/1121750irq/30-eth0_g0_09:57:101
121650490irq/29-eth0_g0_121ksoftirqd/110:19:501
121470ksoftirqd/1121650irq/29-eth0_g0_11:27:381
121650460irq/29-eth0_g0_121ksoftirqd/109:12:440
121460ksoftirqd/1121750irq/30-eth0_g0_12:00:501
121750450irq/30-eth0_g0_1219-21kworker/1:211:08:371
121450ksoftirqd/1121750irq/30-eth0_g0_12:20:581
121450ksoftirqd/1121750irq/30-eth0_g0_11:55:161
121450ksoftirqd/1121750irq/30-eth0_g0_11:14:351
121450ksoftirqd/1121650irq/29-eth0_g0_10:25:260
134882440sleep0121650irq/29-eth0_g0_10:06:500
110422440sleep0121650irq/29-eth0_g0_09:56:530
98102430sleep1121650irq/29-eth0_g0_09:51:471
121750430irq/30-eth0_g0_1219-21kworker/1:211:38:051
121750430irq/30-eth0_g0_1219-21kworker/1:211:38:051
121750430irq/30-eth0_g0_1219-21kworker/1:211:22:071
121750420irq/30-eth0_g0_1219-21kworker/1:209:38:331
121650420irq/29-eth0_g0_31ksoftirqd/011:40:000
121650420irq/29-eth0_g0_1875-21runrttasks07:09:290
121650420irq/29-eth0_g0_121ksoftirqd/112:14:501
121650420irq/29-eth0_g0_121ksoftirqd/110:21:390
234962410sleep0121650irq/29-eth0_g0_10:49:150
121410ksoftirqd/1121650irq/29-eth0_g0_10:59:481
121410ksoftirqd/1121650irq/29-eth0_g0_10:59:481
121410ksoftirqd/1121650irq/29-eth0_g0_10:46:521
633999402cyclictest13092sleep111:29:561
6339994010cyclictest0-21swapper/109:23:221
121750400irq/30-eth0_g0_1219-21kworker/1:210:02:041
121650400irq/29-eth0_g0_31ksoftirqd/012:17:410
121650400irq/29-eth0_g0_13-21kworker/0:112:25:120
121650400irq/29-eth0_g0_13-21kworker/0:111:08:530
121650400irq/29-eth0_g0_13-21kworker/0:110:40:220
121650400irq/29-eth0_g0_13-21kworker/0:109:44:550
121650400irq/29-eth0_g0_121ksoftirqd/111:55:530
121400ksoftirqd/1121750irq/30-eth0_g0_11:21:310
633999391cyclictest15513-21taskset10:14:591
121650390irq/29-eth0_g0_31ksoftirqd/010:35:410
121650390irq/29-eth0_g0_1875-21runrttasks12:31:530
121650390irq/29-eth0_g0_1875-21runrttasks07:45:440
121650390irq/29-eth0_g0_13-21kworker/0:112:36:350
121650390irq/29-eth0_g0_13-21kworker/0:111:11:350
121650390irq/29-eth0_g0_13-21kworker/0:110:54:550
121650390irq/29-eth0_g0_13-21kworker/0:110:17:200
121650390irq/29-eth0_g0_13-21kworker/0:109:32:230
121650390irq/29-eth0_g0_13-21kworker/0:109:21:340
121650390irq/29-eth0_g0_121ksoftirqd/111:49:241
121650390irq/29-eth0_g0_0-21swapper/008:59:510
121390ksoftirqd/1121750irq/30-eth0_g0_10:50:130
121390ksoftirqd/1121750irq/30-eth0_g0_07:21:400
633999382cyclictest21132-21sed08:25:011
633999381cyclictest19817-21find08:20:001
121750380irq/30-eth0_g0_31ksoftirqd/011:25:470
121750380irq/30-eth0_g0_1219-21kworker/1:211:42:041
121750380irq/30-eth0_g0_1219-21kworker/1:210:34:241
121750380irq/30-eth0_g0_0-21swapper/112:35:541
121650380irq/29-eth0_g0_2634-21ntp_states11:34:580
121650380irq/29-eth0_g0_2634-21ntp_states11:34:580
121650380irq/29-eth0_g0_13-21kworker/0:112:23:260
121650380irq/29-eth0_g0_13-21kworker/0:112:11:000
121650380irq/29-eth0_g0_13-21kworker/0:112:07:100
121650380irq/29-eth0_g0_13-21kworker/0:111:59:590
121650380irq/29-eth0_g0_13-21kworker/0:111:32:360
121650380irq/29-eth0_g0_13-21kworker/0:111:18:290
121650380irq/29-eth0_g0_13-21kworker/0:110:04:230
121650380irq/29-eth0_g0_13-21kworker/0:109:25:530
121650380irq/29-eth0_g0_121ksoftirqd/112:29:421
121650380irq/29-eth0_g0_121ksoftirqd/109:34:411
121380ksoftirqd/1121750irq/30-eth0_g0_10:11:080
121380ksoftirqd/1121750irq/30-eth0_g0_09:18:360
121380ksoftirqd/1121750irq/30-eth0_g0_08:04:100
121380ksoftirqd/1121750irq/30-eth0_g0_07:30:310
121380ksoftirqd/1121650irq/29-eth0_g0_08:04:570
121750370irq/30-eth0_g0_5870-21grep07:04:561
121750370irq/30-eth0_g0_0-21swapper/110:13:021
121750370irq/30-eth0_g0_0-21swapper/109:40:521
121750370irq/30-eth0_g0_0-21swapper/109:26:181
121650370irq/29-eth0_g0_22896-21latency_hist08:34:410
121650370irq/29-eth0_g0_13-21kworker/0:111:00:200
121650370irq/29-eth0_g0_13-21kworker/0:111:00:200
121650370irq/29-eth0_g0_13-21kworker/0:109:35:160
633999362cyclictest12773-21tail07:44:571
633999361cyclictest9036-21netstat07:24:521
633999361cyclictest7486-21awk07:14:561
633999361cyclictest27027-21grep08:49:571
633999361cyclictest23087-21sed08:34:521
633999361cyclictest15901-21taskset08:04:511
121650360irq/29-eth0_g0_28450-21/usr/sbin/munin08:55:000
121650360irq/29-eth0_g0_24436-21latency08:39:540
121650360irq/29-eth0_g0_24436-21latency08:39:540
121650360irq/29-eth0_g0_1875-21runrttasks09:51:110
121650360irq/29-eth0_g0_1875-21runrttasks08:21:390
121650360irq/29-eth0_g0_1875-21runrttasks07:53:140
121650360irq/29-eth0_g0_14169-21missed_timers07:54:510
121650360irq/29-eth0_g0_13-21kworker/0:111:51:300
121650360irq/29-eth0_g0_0-21swapper/010:29:460
633999351cyclictest30768-21proc_pri09:04:591
633999351cyclictest30217-21ps11:14:581
633999351cyclictest29314-21taskset08:59:541
633999351cyclictest0-21swapper/108:55:011
121750350irq/30-eth0_g0_31863-21missed_timers09:09:561
121650350irq/29-eth0_g0_6931-21/usr/sbin/munin07:14:540
121650350irq/29-eth0_g0_27319-21unixbench_singl08:50:010
121650350irq/29-eth0_g0_1875-21runrttasks08:44:540
121650350irq/29-eth0_g0_1875-21runrttasks08:37:330
121650350irq/29-eth0_g0_1875-21runrttasks08:16:540
121650350irq/29-eth0_g0_1875-21runrttasks08:11:280
121650350irq/29-eth0_g0_1875-21runrttasks07:41:290
121650350irq/29-eth0_g0_1875-21runrttasks07:26:540
121650350irq/29-eth0_g0_1875-21runrttasks07:12:400
121650350irq/29-eth0_g0_13-21kworker/0:109:41:050
121350ksoftirqd/1121650irq/29-eth0_g0_08:44:551
633999341cyclictest14398-21taskset07:54:561
633999341cyclictest10321-21grep07:34:411
633999341cyclictest0-21swapper/108:00:281
633999340cyclictest0-21swapper/108:10:021
121650340irq/29-eth0_g0_633899cyclictest07:36:520
121650340irq/29-eth0_g0_30978-21unixbench_singl09:05:010
121650340irq/29-eth0_g0_1875-21runrttasks08:28:250
633999331cyclictest0-21swapper/107:38:271
121750330irq/30-eth0_g0_0-21swapper/108:39:571
121750330irq/30-eth0_g0_0-21swapper/108:39:571
121750330irq/30-eth0_g0_0-21swapper/108:33:241
633999311cyclictest0-21swapper/107:40:141
633999311cyclictest0-21swapper/107:10:101
121650310irq/29-eth0_g0_13491-21runrttasks07:51:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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