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2025-08-27 - 09:33

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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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 Aug 27, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121490ksoftirqd/12288650irq/29-eth0_g0_23:26:151
121470ksoftirqd/12288650irq/29-eth0_g0_22:35:541
121460ksoftirqd/12288650irq/29-eth0_g0_23:39:291
2288650440irq/29-eth0_g0_470-21kworker/1:122:09:161
121440ksoftirqd/12288750irq/30-eth0_g0_23:31:341
121440ksoftirqd/12288750irq/30-eth0_g0_19:36:061
2288750430irq/30-eth0_g0_121ksoftirqd/122:28:510
2288650430irq/29-eth0_g0_27115-21wc00:10:531
121430ksoftirqd/12288750irq/30-eth0_g0_22:55:061
2288750420irq/30-eth0_g0_31ksoftirqd/022:55:170
2288750420irq/30-eth0_g0_22885-21kworker/0:221:18:590
2288750420irq/30-eth0_g0_19717-21grep23:21:180
2288750420irq/30-eth0_g0_19660-21find20:01:140
2288750420irq/30-eth0_g0_19660-21find20:01:140
2288650420irq/29-eth0_g0_470-21kworker/1:123:56:371
121420ksoftirqd/12288750irq/30-eth0_g0_20:41:101
2288750410irq/30-eth0_g0_22885-21kworker/0:223:58:570
2288750410irq/30-eth0_g0_22885-21kworker/0:222:58:040
2288750410irq/30-eth0_g0_22885-21kworker/0:222:48:520
2288750410irq/30-eth0_g0_22885-21kworker/0:222:41:110
2288650410irq/29-eth0_g0_470-21kworker/1:123:51:531
2288650410irq/29-eth0_g0_470-21kworker/1:122:11:571
2288650410irq/29-eth0_g0_470-21kworker/1:121:45:491
2288650410irq/29-eth0_g0_121ksoftirqd/122:49:371
2288750400irq/30-eth0_g0_8499-21ls22:15:530
2288750400irq/30-eth0_g0_31ksoftirqd/021:10:530
2288750400irq/30-eth0_g0_29344-21mailstats00:21:150
2288750400irq/30-eth0_g0_23699-21grep20:26:120
2288750400irq/30-eth0_g0_22885-21kworker/0:223:34:260
2288750400irq/30-eth0_g0_22885-21kworker/0:222:08:010
2288750400irq/30-eth0_g0_22885-21kworker/0:222:04:490
2288750400irq/30-eth0_g0_22885-21kworker/0:200:13:190
2288750400irq/30-eth0_g0_22198-21grep23:36:190
2288650400irq/29-eth0_g0_470-21kworker/1:121:48:291
2288650400irq/29-eth0_g0_470-21kworker/1:100:02:001
2288650400irq/29-eth0_g0_18206-21grep19:51:160
2288650400irq/29-eth0_g0_121ksoftirqd/123:14:161
2288650400irq/29-eth0_g0_0-21swapper/121:13:231
121400ksoftirqd/12288750irq/30-eth0_g0_23:07:211
2288750390irq/30-eth0_g0_30765-21missed_timers21:11:110
2288750390irq/30-eth0_g0_31ksoftirqd/000:10:520
2288750390irq/30-eth0_g0_22885-21kworker/0:223:16:070
2288750390irq/30-eth0_g0_22885-21kworker/0:222:36:100
2288750390irq/30-eth0_g0_22885-21kworker/0:200:35:140
2288750390irq/30-eth0_g0_22885-21kworker/0:200:01:190
2288750390irq/30-eth0_g0_15460-21awk19:36:100
2288750390irq/30-eth0_g0_121ksoftirqd/121:35:000
2288750390irq/30-eth0_g0_10013-21unixbench_multi22:21:160
2288650390irq/29-eth0_g0_470-21kworker/1:121:56:141
2288650390irq/29-eth0_g0_470-21kworker/1:121:53:331
2288650390irq/29-eth0_g0_470-21kworker/1:100:16:391
2288650390irq/29-eth0_g0_22885-21kworker/0:223:26:070
2288650390irq/29-eth0_g0_121ksoftirqd/122:32:211
2288650390irq/29-eth0_g0_121ksoftirqd/121:19:421
2288650390irq/29-eth0_g0_10075-21grep19:01:160
2288750380irq/30-eth0_g0_25854-21latency20:41:110
2288750380irq/30-eth0_g0_24504-21processes20:31:190
2288750380irq/30-eth0_g0_22885-21kworker/0:223:53:280
2288750380irq/30-eth0_g0_22885-21kworker/0:223:46:040
2288750380irq/30-eth0_g0_22885-21kworker/0:222:20:250
2288750380irq/30-eth0_g0_22885-21kworker/0:221:41:090
2288750380irq/30-eth0_g0_22885-21kworker/0:221:39:070
2288650380irq/29-eth0_g0_470-21kworker/1:121:28:271
2288650380irq/29-eth0_g0_30316-21vmstat00:26:171
2288650380irq/29-eth0_g0_22393-21sed23:41:111
2288650380irq/29-eth0_g0_121ksoftirqd/121:21:371
121380ksoftirqd/12288750irq/30-eth0_g0_23:25:261
2288750370irq/30-eth0_g0_5033-21rt-features21:51:140
2288750370irq/30-eth0_g0_31ksoftirqd/021:48:030
2288750370irq/30-eth0_g0_22885-21kworker/0:223:43:250
2288750370irq/30-eth0_g0_22885-21kworker/0:223:14:040
2288750370irq/30-eth0_g0_22885-21kworker/0:223:09:310
2288750370irq/30-eth0_g0_22885-21kworker/0:221:29:100
2288750370irq/30-eth0_g0_22885-21kworker/0:221:23:330
2288750370irq/30-eth0_g0_22885-21kworker/0:200:26:470
2288750370irq/30-eth0_g0_22885-21kworker/0:200:18:580
2288750370irq/30-eth0_g0_121ksoftirqd/122:28:561
2288650370irq/29-eth0_g0_470-21kworker/1:122:59:141
2288650370irq/29-eth0_g0_470-21kworker/1:122:45:101
2288650370irq/29-eth0_g0_470-21kworker/1:122:00:551
2288650370irq/29-eth0_g0_1016099cyclictest22:21:151
2288650370irq/29-eth0_g0_0-21swapper/123:02:281
2288650370irq/29-eth0_g0_0-21swapper/122:20:391
2288650370irq/29-eth0_g0_0-21swapper/121:36:021
2288650370irq/29-eth0_g0_0-21swapper/121:33:481
2288650370irq/29-eth0_g0_0-21swapper/100:25:191
2288750360irq/30-eth0_g0_31ksoftirqd/023:03:390
2288750360irq/30-eth0_g0_22885-21kworker/0:222:32:280
2288650360irq/29-eth0_g0_470-21kworker/1:123:49:521
2288650360irq/29-eth0_g0_30429-21cpu00:31:041
2288650360irq/29-eth0_g0_22129-21timerandwakeup20:16:151
2288650360irq/29-eth0_g0_18950-21head23:16:201
2288650360irq/29-eth0_g0_16639-21wc19:45:531
2288650360irq/29-eth0_g0_0-21swapper/120:56:151
2288650360irq/29-eth0_g0_0-21swapper/119:56:091
2288650360irq/29-eth0_g0_0-21swapper/100:11:451
121360ksoftirqd/12288750irq/30-eth0_g0_19:16:090
2288750350irq/30-eth0_g0_31ksoftirqd/020:36:040
2288750350irq/30-eth0_g0_22885-21kworker/0:221:56:300
2288650350irq/29-eth0_g0_29111-21latency21:01:091
2288650350irq/29-eth0_g0_27887-21head20:51:131
2288650350irq/29-eth0_g0_26987-21timerandwakeup20:46:141
2288650350irq/29-eth0_g0_1016099cyclictest19:11:141
2288650350irq/29-eth0_g0_0-21swapper/121:08:371
2288650350irq/29-eth0_g0_0-21swapper/120:31:151
2288750340irq/30-eth0_g0_22234-21sed20:16:160
2288750340irq/30-eth0_g0_21122-21ntp_kernel_err20:11:120
2288750340irq/30-eth0_g0_0-21swapper/019:31:090
2288650340irq/29-eth0_g0_23638-21proc_pri20:26:111
2288650340irq/29-eth0_g0_10881-21unixbench_multi19:06:141
2288650340irq/29-eth0_g0_0-21swapper/119:31:151
2288650340irq/29-eth0_g0_0-21swapper/021:01:140
121340ksoftirqd/110157-21munin-run19:05:531
2288750330irq/30-eth0_g0_22911-21awk20:21:130
2288750330irq/30-eth0_g0_18944-21grep19:56:140
2288750330irq/30-eth0_g0_17344-21grep19:46:150
2288750330irq/30-eth0_g0_12904-21latency19:21:080
2288750330irq/30-eth0_g0_11113-21df_abs19:11:060
2288650330irq/29-eth0_g0_25329-21wc20:36:121
2288650330irq/29-eth0_g0_23068-21unixbench_singl20:21:151
2288650330irq/29-eth0_g0_20467-21sendmail_mailqu20:06:151
2288650330irq/29-eth0_g0_0-21swapper/120:01:111
2288650330irq/29-eth0_g0_0-21swapper/120:01:111
2288750320irq/30-eth0_g0_11983-21df19:16:061
2288750320irq/30-eth0_g0_0-21swapper/020:56:100
2288650320irq/29-eth0_g0_18191-21unixbench_singl19:51:161
2288650320irq/29-eth0_g0_16969-21latency19:46:091
2288650320irq/29-eth0_g0_13993-21fgrep19:26:141
2288650320irq/29-eth0_g0_13327-21unixbench_singl19:21:151
2288750310irq/30-eth0_g0_20488-21sendmail_mailtr20:06:160
2288650310irq/29-eth0_g0_21373-21unixbench_multi20:11:161
2288750300irq/30-eth0_g0_2180-21lldpd19:41:150
2288650300irq/29-eth0_g0_27184-21cat20:50:530
2288650300irq/29-eth0_g0_13786-21missed_timers19:26:100
2288650290irq/29-eth0_g0_27529-21missed_timers20:51:080
2288650290irq/29-eth0_g0_10925-21grep19:06:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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