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2025-08-31 - 02:05

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 highest latencies:
System rack3slot5s.osadl.org (updated Sun Aug 31, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121500ksoftirqd/12288650irq/29-eth0_g0_00:34:011
121500ksoftirqd/12288650irq/29-eth0_g0_00:20:131
2288650470irq/29-eth0_g0_14070-21egrep22:00:551
121470ksoftirqd/12288750irq/30-eth0_g0_23:36:040
121470ksoftirqd/12288650irq/29-eth0_g0_23:08:131
121470ksoftirqd/12288650irq/29-eth0_g0_21:06:441
2288650460irq/29-eth0_g0_7421-21unixbench_multi21:16:061
121450ksoftirqd/12288650irq/29-eth0_g0_22:53:051
2288650440irq/29-eth0_g0_470-21kworker/1:122:22:231
121440ksoftirqd/12288750irq/30-eth0_g0_22:15:001
121440ksoftirqd/12288650irq/29-eth0_g0_22:41:091
2288650430irq/29-eth0_g0_470-21kworker/1:123:58:481
121430ksoftirqd/12288750irq/30-eth0_g0_22:06:261
121430ksoftirqd/12288750irq/30-eth0_g0_21:29:401
2288650420irq/29-eth0_g0_470-21kworker/1:122:59:281
2288650420irq/29-eth0_g0_470-21kworker/1:121:34:291
2288650420irq/29-eth0_g0_470-21kworker/1:100:06:421
2682499411cyclictest29317-21unixbench_singl23:31:031
2288750410irq/30-eth0_g0_22885-21kworker/0:222:08:110
2288750410irq/30-eth0_g0_121ksoftirqd/122:11:150
2288650410irq/29-eth0_g0_470-21kworker/1:122:16:341
2288650410irq/29-eth0_g0_470-21kworker/1:100:25:581
121410ksoftirqd/12288750irq/30-eth0_g0_00:16:330
2288750400irq/30-eth0_g0_5042-21latency_hist00:25:430
2288750400irq/30-eth0_g0_29375-21grep20:11:010
2288750400irq/30-eth0_g0_22885-21kworker/0:223:52:160
2288750400irq/30-eth0_g0_22885-21kworker/0:223:25:570
2288750400irq/30-eth0_g0_22885-21kworker/0:222:23:380
2288750400irq/30-eth0_g0_22885-21kworker/0:221:45:480
2288750400irq/30-eth0_g0_22885-21kworker/0:200:13:030
2288750400irq/30-eth0_g0_22741-21timerandwakeup22:51:030
2288750400irq/30-eth0_g0_14383-21sort22:00:590
2288650400irq/29-eth0_g0_470-21kworker/1:122:00:241
2288650400irq/29-eth0_g0_31ksoftirqd/000:06:030
2288650400irq/29-eth0_g0_121ksoftirqd/123:43:041
2288650400irq/29-eth0_g0_121ksoftirqd/121:41:411
2288650400irq/29-eth0_g0_121ksoftirqd/121:10:441
26824993912cyclictest0-21swapper/122:33:071
2288750390irq/30-eth0_g0_968-21grep20:36:050
2288750390irq/30-eth0_g0_8325-21sh21:25:430
2288750390irq/30-eth0_g0_31ksoftirqd/023:34:320
2288750390irq/30-eth0_g0_22885-21kworker/0:223:19:350
2288750390irq/30-eth0_g0_22885-21kworker/0:223:14:240
2288750390irq/30-eth0_g0_22885-21kworker/0:222:19:280
2288750390irq/30-eth0_g0_22885-21kworker/0:200:32:090
2288750390irq/30-eth0_g0_22885-21kworker/0:200:02:050
2288750390irq/30-eth0_g0_12694-21sort21:50:580
2288750390irq/30-eth0_g0_10539-21/usr/sbin/munin21:36:050
2288650390irq/29-eth0_g0_470-21kworker/1:123:15:471
2288650390irq/29-eth0_g0_0-21swapper/122:27:171
2288650390irq/29-eth0_g0_0-21swapper/100:04:241
121390ksoftirqd/12288750irq/30-eth0_g0_21:58:050
121390ksoftirqd/12288650irq/29-eth0_g0_21:48:301
2288750380irq/30-eth0_g0_30509-21if_eth020:20:570
2288750380irq/30-eth0_g0_27812-21latency_hist20:05:440
2288750380irq/30-eth0_g0_22885-21kworker/0:223:42:370
2288750380irq/30-eth0_g0_22885-21kworker/0:223:24:020
2288750380irq/30-eth0_g0_22885-21kworker/0:222:47:450
2288750380irq/30-eth0_g0_22885-21kworker/0:221:18:510
2288750380irq/30-eth0_g0_2004-21syslogd21:05:430
2288750380irq/30-eth0_g0_121ksoftirqd/123:46:080
2288750380irq/30-eth0_g0_121ksoftirqd/122:59:080
2288750380irq/30-eth0_g0_11147-21ls21:40:590
2288650380irq/29-eth0_g0_5089-21diskmemload23:46:031
2288650380irq/29-eth0_g0_470-21kworker/1:123:25:301
2288650380irq/29-eth0_g0_470-21kworker/1:121:23:321
2288650380irq/29-eth0_g0_28499-21sed23:26:041
2288650380irq/29-eth0_g0_121ksoftirqd/123:38:191
2288650380irq/29-eth0_g0_121ksoftirqd/123:15:061
2288650380irq/29-eth0_g0_121ksoftirqd/123:05:041
2288650380irq/29-eth0_g0_121ksoftirqd/122:48:241
2288650380irq/29-eth0_g0_0-21swapper/100:11:191
2288750370irq/30-eth0_g0_31ksoftirqd/021:34:280
2288750370irq/30-eth0_g0_31ksoftirqd/021:15:320
2288750370irq/30-eth0_g0_25330-21latency_hist23:10:440
2288750370irq/30-eth0_g0_22885-21kworker/0:223:58:190
2288750370irq/30-eth0_g0_22885-21kworker/0:223:01:110
2288750370irq/30-eth0_g0_22885-21kworker/0:222:41:400
2288750370irq/30-eth0_g0_22885-21kworker/0:221:26:210
2288750370irq/30-eth0_g0_22885-21kworker/0:200:27:310
2288650370irq/29-eth0_g0_30186-21head20:16:011
2288650370irq/29-eth0_g0_0-21swapper/100:24:351
121370ksoftirqd/12288750irq/30-eth0_g0_22:34:020
121370ksoftirqd/12288650irq/29-eth0_g0_21:54:081
121370ksoftirqd/12288650irq/29-eth0_g0_20:30:571
2288750360irq/30-eth0_g0_22885-21kworker/0:222:36:460
2288750360irq/30-eth0_g0_22885-21kworker/0:222:27:090
2288750360irq/30-eth0_g0_22885-21kworker/0:221:07:050
2288650360irq/29-eth0_g0_26822-21cyclictest22:40:141
121360ksoftirqd/126821-21munin-run19:05:431
2288650350irq/29-eth0_g0_470-21kworker/1:121:40:091
2288650350irq/29-eth0_g0_4191-21unixbench_multi20:56:011
2288650350irq/29-eth0_g0_332-21df_abs20:35:561
2288650350irq/29-eth0_g0_1723-21sed20:41:041
2288650350irq/29-eth0_g0_0-21swapper/123:50:591
2288750340irq/30-eth0_g0_4221-21head20:56:010
2288750340irq/30-eth0_g0_32593-21sed20:31:030
2288650340irq/29-eth0_g0_28197-21sort20:06:321
2288650340irq/29-eth0_g0_2535-21unixbench_multi20:46:041
2288650340irq/29-eth0_g0_0-21swapper/120:26:081
2288750330irq/30-eth0_g0_30179-21sed20:16:010
2288750330irq/30-eth0_g0_2497-21sort20:46:030
2288650330irq/29-eth0_g0_30814-21awk20:21:031
2288650330irq/29-eth0_g0_0-21swapper/121:01:021
2288650330irq/29-eth0_g0_0-21swapper/120:05:441
2288650330irq/29-eth0_g0_0-21swapper/120:00:441
2288750320irq/30-eth0_g0_31244-21df_abs20:25:590
2288750320irq/30-eth0_g0_1667-21cat20:41:030
2288650320irq/29-eth0_g0_3356-21sed20:51:041
2288650320irq/29-eth0_g0_28421-21sendmail_mailtr20:06:590
2288750310irq/30-eth0_g0_3426-21unixbench_singl20:51:040
2288750310irq/30-eth0_g0_26940-21sort19:10:440
2288650310irq/29-eth0_g0_27773-21latency_hist20:00:440
2288650310irq/29-eth0_g0_27177-21latency_hist19:25:440
2288650310irq/29-eth0_g0_2682499cyclictest20:11:011
2288750300irq/30-eth0_g0_0-21swapper/019:20:440
2288650300irq/29-eth0_g0_26822-21cyclictest19:05:430
2288650300irq/29-eth0_g0_0-21swapper/119:45:441
2288650290irq/29-eth0_g0_27042-21grep19:15:441
2288650290irq/29-eth0_g0_0-21swapper/119:55:431
2288650290irq/29-eth0_g0_0-21swapper/119:40:441
2288750280irq/30-eth0_g0_0-21swapper/019:35:430
2288650280irq/29-eth0_g0_26965-21latency_hist19:10:441
121280ksoftirqd/127308-21latency_hist19:35:431
2682499270cyclictest0-21swapper/119:25:431
2288750270irq/30-eth0_g0_26996-21latency_hist19:15:440
2288750270irq/30-eth0_g0_0-21swapper/019:38:060
2288650270irq/29-eth0_g0_0-21swapper/119:28:021
2288650270irq/29-eth0_g0_0-21swapper/119:28:021
2288750260irq/30-eth0_g0_27695-21sort19:55:440
2288750260irq/30-eth0_g0_0-21swapper/019:50:440
2288650260irq/29-eth0_g0_0-21swapper/119:50:431
2288750250irq/30-eth0_g0_0-21swapper/019:45:440
121250ksoftirqd/127067-21pluginstate19:20:441
26823992317cyclictest27260-21latency_hist19:30:430
26823992317cyclictest27260-21latency_hist19:30:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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