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2025-06-16 - 20:04

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 all highest latencies:
System rack3slot5s.osadl.org (updated Mon Jun 16, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211000ksoftirqd/12288750irq/30-eth0_g0_08:27:321
121970ksoftirqd/19982sleep011:39:500
121890ksoftirqd/12288750irq/30-eth0_g0_09:40:481
23422600sleep12288650irq/29-eth0_g0_11:45:521
121580ksoftirqd/12288750irq/30-eth0_g0_08:18:591
121530ksoftirqd/12288750irq/30-eth0_g0_12:36:031
121530ksoftirqd/12288650irq/29-eth0_g0_10:49:260
2288650520irq/29-eth0_g0_121ksoftirqd/111:54:071
164342500sleep02288750irq/30-eth0_g0_10:31:210
2288650490irq/29-eth0_g0_31914-21latency_hist09:23:421
121490ksoftirqd/12288650irq/29-eth0_g0_12:08:111
121480ksoftirqd/12288650irq/29-eth0_g0_11:08:221
121480ksoftirqd/12288650irq/29-eth0_g0_11:08:221
121480ksoftirqd/12288650irq/29-eth0_g0_10:32:211
121460ksoftirqd/12288650irq/29-eth0_g0_10:39:411
121460ksoftirqd/12288650irq/29-eth0_g0_09:49:151
190582450sleep02288650irq/29-eth0_g0_10:43:240
121450ksoftirqd/12288650irq/29-eth0_g0_10:38:101
121450ksoftirqd/12288650irq/29-eth0_g0_09:46:190
237282440sleep12288750irq/30-eth0_g0_11:00:401
121440ksoftirqd/12288750irq/30-eth0_g0_09:15:391
121440ksoftirqd/12288650irq/29-eth0_g0_12:23:591
121440ksoftirqd/12288650irq/29-eth0_g0_12:16:411
121440ksoftirqd/12288650irq/29-eth0_g0_07:54:021
2288650430irq/29-eth0_g0_470-21kworker/1:111:10:321
2288650430irq/29-eth0_g0_470-21kworker/1:111:10:321
2288650430irq/29-eth0_g0_470-21kworker/1:110:02:081
121430ksoftirqd/12288750irq/30-eth0_g0_11:58:270
121430ksoftirqd/12288750irq/30-eth0_g0_10:49:321
121430ksoftirqd/12288650irq/29-eth0_g0_07:49:051
2288750420irq/30-eth0_g0_8274-21unixbench_singl12:09:070
2288750420irq/30-eth0_g0_22885-21kworker/0:211:29:040
2288750420irq/30-eth0_g0_14008-21ntpq08:09:020
2288750420irq/30-eth0_g0_14008-21ntpq08:09:020
2288650420irq/29-eth0_g0_470-21kworker/1:111:35:241
2288650420irq/29-eth0_g0_470-21kworker/1:110:43:571
2288650420irq/29-eth0_g0_470-21kworker/1:109:26:111
2288750410irq/30-eth0_g0_22885-21kworker/0:209:40:530
2288650410irq/29-eth0_g0_470-21kworker/1:109:44:231
2288650410irq/29-eth0_g0_1155-21taskset11:41:341
121410ksoftirqd/12288750irq/30-eth0_g0_09:31:160
121410ksoftirqd/12288650irq/29-eth0_g0_08:32:521
2288750400irq/30-eth0_g0_31ksoftirqd/012:36:450
2288750400irq/30-eth0_g0_31ksoftirqd/011:10:080
2288750400irq/30-eth0_g0_31ksoftirqd/011:10:080
2288750400irq/30-eth0_g0_31ksoftirqd/009:09:270
2288750400irq/30-eth0_g0_22885-21kworker/0:209:34:440
2288750400irq/30-eth0_g0_22280-21grep10:54:060
2288750400irq/30-eth0_g0_22280-21grep10:54:060
2288750400irq/30-eth0_g0_20310-21munin-run10:48:420
2288750400irq/30-eth0_g0_17339-21timerandwakeup10:34:120
2288750400irq/30-eth0_g0_13380-21missed_timers10:19:000
2288750400irq/30-eth0_g0_121ksoftirqd/111:01:420
2288650400irq/29-eth0_g0_121ksoftirqd/110:23:591
121400ksoftirqd/12288650irq/29-eth0_g0_11:48:310
121400ksoftirqd/12288650irq/29-eth0_g0_09:55:051
2288750390irq/30-eth0_g0_31ksoftirqd/010:03:590
2288750390irq/30-eth0_g0_23956-21find08:49:060
2288750390irq/30-eth0_g0_22885-21kworker/0:212:04:500
2288750390irq/30-eth0_g0_22885-21kworker/0:211:35:420
2288750390irq/30-eth0_g0_22885-21kworker/0:209:58:370
2288750390irq/30-eth0_g0_22885-21kworker/0:209:26:230
2288750390irq/30-eth0_g0_17552-21ls08:23:570
2288750390irq/30-eth0_g0_16617-21sendmail_mailqu08:19:180
2288750390irq/30-eth0_g0_121ksoftirqd/112:01:070
2288750390irq/30-eth0_g0_11746-21sort10:13:420
2288750390irq/30-eth0_g0_11634-21proc_pri07:59:100
2288750390irq/30-eth0_g0_11634-21proc_pri07:59:100
2288650390irq/29-eth0_g0_470-21kworker/1:112:21:011
2288650390irq/29-eth0_g0_470-21kworker/1:111:26:581
2288650390irq/29-eth0_g0_470-21kworker/1:111:26:581
2288650390irq/29-eth0_g0_470-21kworker/1:109:30:411
2288650390irq/29-eth0_g0_0-21swapper/112:00:021
2288650390irq/29-eth0_g0_0-21swapper/109:13:281
121390ksoftirqd/12288750irq/30-eth0_g0_10:00:540
121390ksoftirqd/12288750irq/30-eth0_g0_09:02:050
121390ksoftirqd/12288650irq/29-eth0_g0_07:42:521
2288750380irq/30-eth0_g0_6806-21taskset07:39:020
2288750380irq/30-eth0_g0_3130-21sendmail_mailtr07:24:020
2288750380irq/30-eth0_g0_31ksoftirqd/009:20:370
2288750380irq/30-eth0_g0_22885-21kworker/0:211:50:140
2288750380irq/30-eth0_g0_22885-21kworker/0:211:04:040
2288750380irq/30-eth0_g0_22885-21kworker/0:211:04:040
2288750380irq/30-eth0_g0_22885-21kworker/0:210:24:170
2288750380irq/30-eth0_g0_10623-21grep07:54:030
2288650380irq/29-eth0_g0_31ksoftirqd/012:26:260
2288650380irq/29-eth0_g0_27310-21sshd11:14:381
2288650380irq/29-eth0_g0_22885-21kworker/0:211:18:020
2288650380irq/29-eth0_g0_15513-21head08:14:031
2288650380irq/29-eth0_g0_13363-21ls10:19:001
2288650380irq/29-eth0_g0_0-21swapper/111:32:371
121380ksoftirqd/12288650irq/29-eth0_g0_12:16:300
121380ksoftirqd/12288650irq/29-eth0_g0_08:45:201
121380ksoftirqd/12288650irq/29-eth0_g0_07:12:501
2288750370irq/30-eth0_g0_6174-21sort07:38:420
2288750370irq/30-eth0_g0_29516-21find11:24:060
2288750370irq/30-eth0_g0_29516-21find11:24:060
2288750370irq/30-eth0_g0_22885-21kworker/0:212:28:480
2288750370irq/30-eth0_g0_22885-21kworker/0:212:19:130
2288750370irq/30-eth0_g0_22885-21kworker/0:211:18:590
2288750370irq/30-eth0_g0_22885-21kworker/0:211:18:590
2288750370irq/30-eth0_g0_121ksoftirqd/110:14:430
2288650370irq/29-eth0_g0_9900-21cat07:53:430
2288650370irq/29-eth0_g0_470-21kworker/1:112:29:391
2288650370irq/29-eth0_g0_2981-21memory11:49:041
2288650370irq/29-eth0_g0_27800-21chrt09:04:081
2288650370irq/29-eth0_g0_2021-21runrttasks07:05:290
2288650370irq/29-eth0_g0_12466-21unixbench_multi10:14:061
2288650370irq/29-eth0_g0_121ksoftirqd/111:21:151
2288650370irq/29-eth0_g0_121ksoftirqd/111:21:151
121370ksoftirqd/12288650irq/29-eth0_g0_08:48:571
3124099361cyclictest8048-21proc_pri12:09:051
2288750360irq/30-eth0_g0_4509-21unixbench_singl07:29:040
2288750360irq/30-eth0_g0_22885-21kworker/0:209:48:460
2288750360irq/30-eth0_g0_22885-21kworker/0:209:13:570
2288750360irq/30-eth0_g0_2021-21runrttasks08:18:250
2288750360irq/30-eth0_g0_0-21swapper/007:13:050
2288650360irq/29-eth0_g0_470-21kworker/1:110:04:011
2288650360irq/29-eth0_g0_37622sleep107:28:421
2288650360irq/29-eth0_g0_20436-21grep08:34:071
2288650360irq/29-eth0_g0_13012-21grep08:04:050
2288650360irq/29-eth0_g0_13012-21grep08:04:050
2288650360irq/29-eth0_g0_121ksoftirqd/110:55:381
2288650360irq/29-eth0_g0_121ksoftirqd/110:55:381
2288650360irq/29-eth0_g0_0-21swapper/108:03:551
2288650360irq/29-eth0_g0_0-21swapper/108:03:551
2288750350irq/30-eth0_g0_2021-21runrttasks08:29:240
2288750350irq/30-eth0_g0_10760-21df_inode10:08:571
2288650350irq/29-eth0_g0_8145-21unixbench_multi07:44:041
2288650350irq/29-eth0_g0_5099-21df_abs07:33:531
2288650350irq/29-eth0_g0_358-21taskset07:13:591
2288650350irq/29-eth0_g0_3124099cyclictest09:35:081
2288650350irq/29-eth0_g0_30961-21runrttasks07:05:351
2288650350irq/29-eth0_g0_26535-21unixbench_multi08:59:071
2288650350irq/29-eth0_g0_20364-21sed08:34:060
2288650350irq/29-eth0_g0_1971-21grep07:19:051
2288750340irq/30-eth0_g0_2021-21runrttasks07:44:350
2288650340irq/29-eth0_g0_3873-21df07:28:541
2288650340irq/29-eth0_g0_24949-21wc08:54:001
2288650340irq/29-eth0_g0_0-21swapper/108:13:421
2288650340irq/29-eth0_g0_0-21swapper/108:13:421
2288650340irq/29-eth0_g0_0-21swapper/108:03:421
2288650340irq/29-eth0_g0_0-21swapper/108:03:421
2288750330irq/30-eth0_g0_21542-21timerandwakeup08:39:040
2288750330irq/30-eth0_g0_2021-21runrttasks07:16:260
2288750320irq/30-eth0_g0_2494-21latency_hist07:23:420
2288750320irq/30-eth0_g0_22653-21proc_pri08:44:050
2288750320irq/30-eth0_g0_2021-21runrttasks08:54:050
2288650320irq/29-eth0_g0_0-21swapper/108:39:171
2288750310irq/30-eth0_g0_27371-21sort09:04:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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