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2025-12-29 - 15:19

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 Dec 29, 2025 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1524321570sleep0121750irq/30-eth0_g0_09:20:530
2814821480sleep1121650irq/29-eth0_g0_12:26:131
121990ksoftirqd/1121750irq/30-eth0_g0_11:53:001
121790ksoftirqd/1121750irq/30-eth0_g0_07:05:200
121760ksoftirqd/1121750irq/30-eth0_g0_10:10:481
252502730sleep1121750irq/30-eth0_g0_07:50:161
252502730sleep1121750irq/30-eth0_g0_07:50:161
32442710sleep0121750irq/30-eth0_g0_10:45:160
121590ksoftirqd/1121650irq/29-eth0_g0_09:59:040
61262570sleep0121750irq/30-eth0_g0_10:56:270
311402570sleep0121750irq/30-eth0_g0_10:25:470
121530ksoftirqd/1121750irq/30-eth0_g0_09:57:021
268552520sleep1121750irq/30-eth0_g0_12:20:261
228452520sleep0121650irq/29-eth0_g0_09:53:590
121520ksoftirqd/1121750irq/30-eth0_g0_12:17:081
121510ksoftirqd/1121750irq/30-eth0_g0_10:57:421
121510ksoftirqd/1121750irq/30-eth0_g0_09:33:291
121510ksoftirqd/1121650irq/29-eth0_g0_11:24:270
121500ksoftirqd/1121750irq/30-eth0_g0_12:02:451
121490ksoftirqd/1121750irq/30-eth0_g0_11:43:031
121470ksoftirqd/1121750irq/30-eth0_g0_12:32:411
121450ksoftirqd/1121750irq/30-eth0_g0_10:30:451
121750440irq/30-eth0_g0_1219-21kworker/1:211:32:441
121440ksoftirqd/1121650irq/29-eth0_g0_10:49:341
121750430irq/30-eth0_g0_1219-21kworker/1:211:26:221
121750430irq/30-eth0_g0_1219-21kworker/1:211:22:211
121750430irq/30-eth0_g0_1219-21kworker/1:210:37:361
121750430irq/30-eth0_g0_1219-21kworker/1:209:12:591
121650430irq/29-eth0_g0_1904-21runrttasks12:38:580
121430ksoftirqd/1121750irq/30-eth0_g0_09:39:571
121750420irq/30-eth0_g0_1219-21kworker/1:210:50:581
121420ksoftirqd/1121650irq/29-eth0_g0_10:24:231
296572410sleep0121650irq/29-eth0_g0_12:34:340
121750410irq/30-eth0_g0_1219-21kworker/1:212:12:531
121750410irq/30-eth0_g0_1219-21kworker/1:210:28:081
121650410irq/29-eth0_g0_31888-21memory10:30:170
121650410irq/29-eth0_g0_253652sleep010:04:530
121650410irq/29-eth0_g0_13-21kworker/0:110:54:330
121650410irq/29-eth0_g0_121ksoftirqd/111:04:060
121410ksoftirqd/1121650irq/29-eth0_g0_09:12:070
121750400irq/30-eth0_g0_1219-21kworker/1:210:42:051
121750400irq/30-eth0_g0_1219-21kworker/1:210:01:501
121750400irq/30-eth0_g0_121ksoftirqd/109:27:201
121750400irq/30-eth0_g0_0-21swapper/111:38:461
121650400irq/29-eth0_g0_1904-21runrttasks09:06:150
121650400irq/29-eth0_g0_1495099cyclictest10:21:050
121650400irq/29-eth0_g0_13-21kworker/0:111:52:200
121650400irq/29-eth0_g0_121ksoftirqd/111:18:270
121650400irq/29-eth0_g0_121ksoftirqd/111:18:270
121400ksoftirqd/1121750irq/30-eth0_g0_11:55:590
1495199392cyclictest82092sleep111:05:171
1495199391cyclictest2673-21ps08:30:201
1495199391cyclictest16899-21grep07:15:211
121750390irq/30-eth0_g0_121ksoftirqd/110:07:501
121750390irq/30-eth0_g0_0-21swapper/108:00:191
121650390irq/29-eth0_g0_23132-21sed12:05:200
121650390irq/29-eth0_g0_1904-21runrttasks09:39:230
121650390irq/29-eth0_g0_13-21kworker/0:111:41:350
121650390irq/29-eth0_g0_13-21kworker/0:111:11:510
121650390irq/29-eth0_g0_13-21kworker/0:110:37:370
121650390irq/29-eth0_g0_13-21kworker/0:110:06:310
121650390irq/29-eth0_g0_121ksoftirqd/111:45:230
121650390irq/29-eth0_g0_121ksoftirqd/111:45:230
121650390irq/29-eth0_g0_10108-21awk09:00:200
121650390irq/29-eth0_g0_0-21swapper/012:25:190
121390ksoftirqd/1121650irq/29-eth0_g0_12:05:201
1495199381cyclictest3312sleep108:20:201
1495199381cyclictest3312sleep108:20:201
121750380irq/30-eth0_g0_1219-21kworker/1:209:51:011
121750380irq/30-eth0_g0_1219-21kworker/1:209:41:121
121750380irq/30-eth0_g0_121ksoftirqd/111:03:021
121750380irq/30-eth0_g0_121ksoftirqd/109:15:001
121650380irq/29-eth0_g0_8210-21ps11:05:170
121650380irq/29-eth0_g0_26516-21proc_pri07:55:180
121650380irq/29-eth0_g0_1904-21runrttasks08:16:400
121650380irq/29-eth0_g0_15378-21netstat07:10:150
121650380irq/29-eth0_g0_13-21kworker/0:112:02:370
121650380irq/29-eth0_g0_13-21kworker/0:111:39:470
121650380irq/29-eth0_g0_13-21kworker/0:110:40:130
121650380irq/29-eth0_g0_13-21kworker/0:109:31:270
121650380irq/29-eth0_g0_0-21swapper/010:16:140
121650380irq/29-eth0_g0_0-21swapper/010:16:140
121380ksoftirqd/141250irq/22-fsldma-c07:55:111
121380ksoftirqd/114817-21taskset07:08:341
799370migration/016733-21proc_pri07:15:180
1495199371cyclictest15112-21sed07:10:111
121750370irq/30-eth0_g0_1219-21kworker/1:212:35:111
121750370irq/30-eth0_g0_1219-21kworker/1:211:49:261
121750370irq/30-eth0_g0_1219-21kworker/1:211:49:261
121750370irq/30-eth0_g0_1219-21kworker/1:209:47:571
121750370irq/30-eth0_g0_0-21swapper/111:59:291
121650370irq/29-eth0_g0_31ksoftirqd/012:21:020
121650370irq/29-eth0_g0_31ksoftirqd/012:14:580
121650370irq/29-eth0_g0_31ksoftirqd/008:28:400
121650370irq/29-eth0_g0_31ksoftirqd/008:28:400
121650370irq/29-eth0_g0_21801-21unixbench_multi07:35:210
121650370irq/29-eth0_g0_1904-21runrttasks09:25:250
121650370irq/29-eth0_g0_1904-21runrttasks08:46:370
121650370irq/29-eth0_g0_1904-21runrttasks08:35:070
121650370irq/29-eth0_g0_1904-21runrttasks07:51:120
121650370irq/29-eth0_g0_1904-21runrttasks07:51:120
121650370irq/29-eth0_g0_1904-21runrttasks07:22:220
121650370irq/29-eth0_g0_14552-21unixbench_singl11:30:220
121650370irq/29-eth0_g0_13-21kworker/0:112:16:100
121650370irq/29-eth0_g0_13-21kworker/0:111:28:320
121650370irq/29-eth0_g0_13-21kworker/0:110:10:400
121650370irq/29-eth0_g0_13-21kworker/0:109:45:060
121650370irq/29-eth0_g0_13-21kworker/0:109:41:080
121650370irq/29-eth0_g0_13-21kworker/0:109:16:140
1495199362cyclictest24435-21sshd07:46:281
1495199361cyclictest9804-21cat09:00:141
1495199361cyclictest8583-21wc08:55:151
1495199361cyclictest29211-21unixbench_singl08:05:221
1495199361cyclictest28378-21proc_pri10:15:191
1495199361cyclictest28378-21proc_pri10:15:191
1495199361cyclictest21222-21df07:35:101
1495199361cyclictest204792sleep107:30:201
1495199361cyclictest10261-21df11:15:091
1495199361cyclictest10261-21df11:15:091
1495199361cyclictest0-21swapper/108:40:241
121750360irq/30-eth0_g0_19348-21unixbench_multi07:25:211
121650360irq/29-eth0_g0_32760-21ls08:20:190
121650360irq/29-eth0_g0_32760-21ls08:20:190
121650360irq/29-eth0_g0_1904-21runrttasks08:50:460
121650360irq/29-eth0_g0_1904-21runrttasks08:40:450
121650360irq/29-eth0_g0_1904-21runrttasks08:02:200
1495199352cyclictest7794-21sed08:50:211
1495199351cyclictest9661-21unixbench_singl11:10:201
1495199351cyclictest3968-21wc08:35:201
1495199351cyclictest31332-21ntp_kernel_err08:15:161
1495199351cyclictest29961-21iostat08:10:141
1495199351cyclictest1193-21iostat08:25:141
1495199351cyclictest1193-21iostat08:25:141
1495199351cyclictest109382sleep109:05:111
121750350irq/30-eth0_g0_18119-21unixbench_multi07:20:211
121650350irq/29-eth0_g0_9015-21unixbench_singl08:55:220
121650350irq/29-eth0_g0_2910-21unixbench_singl08:30:230
121650350irq/29-eth0_g0_29056-21chrt08:05:210
121650350irq/29-eth0_g0_1904-21runrttasks08:13:070
121650350irq/29-eth0_g0_13-21kworker/0:107:40:140
121350ksoftirqd/1121650irq/29-eth0_g0_09:20:141
1495199341cyclictest22959-21timerandwakeup07:40:231
121650340irq/29-eth0_g0_20562-21unixbench_multi07:30:210
1495199331cyclictest0-21swapper/108:45:131
121650330irq/29-eth0_g0_23840-21iostat07:45:130
121650330irq/29-eth0_g0_19850-21seq07:29:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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