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2025-08-26 - 16:29

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Tue Aug 26, 2025 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121810ksoftirqd/12288650irq/29-eth0_g0_10:01:161
121540ksoftirqd/12288750irq/30-eth0_g0_10:23:150
121520ksoftirqd/12288650irq/29-eth0_g0_11:13:411
121500ksoftirqd/12288750irq/30-eth0_g0_10:58:290
121500ksoftirqd/12288750irq/30-eth0_g0_10:58:290
121470ksoftirqd/12288650irq/29-eth0_g0_09:07:091
2288650450irq/29-eth0_g0_470-21kworker/1:112:28:391
121440ksoftirqd/12288650irq/29-eth0_g0_10:32:131
2288750430irq/30-eth0_g0_121ksoftirqd/112:33:220
121430ksoftirqd/12288750irq/30-eth0_g0_09:46:431
121430ksoftirqd/12288650irq/29-eth0_g0_11:54:461
121430ksoftirqd/12288650irq/29-eth0_g0_09:48:170
2288750420irq/30-eth0_g0_30942-21latency10:01:100
2288750420irq/30-eth0_g0_22885-21kworker/0:210:50:450
2288750420irq/30-eth0_g0_22885-21kworker/0:210:34:490
2288650420irq/29-eth0_g0_470-21kworker/1:110:26:281
2288650420irq/29-eth0_g0_2080-21find07:01:161
2288650420irq/29-eth0_g0_121ksoftirqd/109:26:211
121420ksoftirqd/12288750irq/30-eth0_g0_10:41:171
121420ksoftirqd/12288650irq/29-eth0_g0_12:04:520
2288750410irq/30-eth0_g0_31ksoftirqd/011:40:390
2288750410irq/30-eth0_g0_31ksoftirqd/011:29:170
2288650410irq/29-eth0_g0_470-21kworker/1:111:05:161
2288650410irq/29-eth0_g0_470-21kworker/1:111:05:161
2288650410irq/29-eth0_g0_121ksoftirqd/109:11:101
2288650410irq/29-eth0_g0_0-21swapper/110:50:381
121410ksoftirqd/1229999cyclictest11:47:001
121410ksoftirqd/1229999cyclictest11:47:001
121410ksoftirqd/12288750irq/30-eth0_g0_11:08:010
121410ksoftirqd/12288750irq/30-eth0_g0_09:43:251
229999403cyclictest2288650irq/29-eth0_g0_08:36:181
2288750400irq/30-eth0_g0_24967-21latency_hist09:25:540
2288750400irq/30-eth0_g0_22885-21kworker/0:210:18:110
2288750400irq/30-eth0_g0_22885-21kworker/0:209:34:120
2288750400irq/30-eth0_g0_22885-21kworker/0:209:27:560
2288750400irq/30-eth0_g0_22885-21kworker/0:209:14:230
2288750400irq/30-eth0_g0_22885-21kworker/0:209:09:050
2288750400irq/30-eth0_g0_16371-21latency08:31:090
2288750400irq/30-eth0_g0_10268-21unixbench_multi07:51:150
2288650400irq/29-eth0_g0_470-21kworker/1:112:05:591
2288650400irq/29-eth0_g0_470-21kworker/1:109:58:361
2288650400irq/29-eth0_g0_470-21kworker/1:109:54:581
2288650400irq/29-eth0_g0_121ksoftirqd/111:08:011
2288650400irq/29-eth0_g0_0-21swapper/109:21:141
121400ksoftirqd/12288650irq/29-eth0_g0_11:17:140
2288750390irq/30-eth0_g0_522-21unixbench_singl10:11:190
2288750390irq/30-eth0_g0_31ksoftirqd/012:27:260
2288750390irq/30-eth0_g0_22885-21kworker/0:211:50:540
2288750390irq/30-eth0_g0_22885-21kworker/0:210:44:220
2288750390irq/30-eth0_g0_22885-21kworker/0:210:36:550
2288750390irq/30-eth0_g0_22885-21kworker/0:210:26:500
2288750390irq/30-eth0_g0_22885-21kworker/0:210:06:240
2288750390irq/30-eth0_g0_22885-21kworker/0:209:45:460
2288750390irq/30-eth0_g0_2217-21unixbench_singl07:01:180
2288750390irq/30-eth0_g0_21526-21mailstats09:01:180
2288750390irq/30-eth0_g0_21526-21mailstats09:01:180
2288750390irq/30-eth0_g0_0-21swapper/012:13:310
2288650390irq/29-eth0_g0_9519-21unixbench_singl07:46:151
2288650390irq/29-eth0_g0_470-21kworker/1:111:22:421
2288650390irq/29-eth0_g0_470-21kworker/1:111:18:471
2288650390irq/29-eth0_g0_121ksoftirqd/110:55:151
2288650390irq/29-eth0_g0_121ksoftirqd/110:16:391
2288650390irq/29-eth0_g0_121ksoftirqd/110:12:091
121390ksoftirqd/12288750irq/30-eth0_g0_10:06:561
2288750380irq/30-eth0_g0_470-21kworker/1:109:34:211
2288750380irq/30-eth0_g0_31ksoftirqd/011:44:090
2288750380irq/30-eth0_g0_31ksoftirqd/011:44:090
2288750380irq/30-eth0_g0_22885-21kworker/0:212:23:580
2288750380irq/30-eth0_g0_22885-21kworker/0:212:09:020
2288750380irq/30-eth0_g0_22885-21kworker/0:211:04:300
2288750380irq/30-eth0_g0_22885-21kworker/0:211:04:300
2288750380irq/30-eth0_g0_22885-21kworker/0:209:52:170
2288750380irq/30-eth0_g0_22885-21kworker/0:209:19:400
2288750380irq/30-eth0_g0_18335-21ls08:41:130
2288750380irq/30-eth0_g0_121ksoftirqd/112:21:111
2288650380irq/29-eth0_g0_470-21kworker/1:110:57:091
2288650380irq/29-eth0_g0_470-21kworker/1:110:57:091
2288650380irq/29-eth0_g0_121ksoftirqd/111:42:481
2288650380irq/29-eth0_g0_121ksoftirqd/111:42:481
2288650380irq/29-eth0_g0_121ksoftirqd/110:22:151
2288650380irq/29-eth0_g0_121ksoftirqd/109:37:341
2288650380irq/29-eth0_g0_121ksoftirqd/109:17:191
2288650380irq/29-eth0_g0_0-21swapper/112:11:001
121380ksoftirqd/12288650irq/29-eth0_g0_12:18:400
2288750370irq/30-eth0_g0_31ksoftirqd/011:21:420
2288750370irq/30-eth0_g0_22885-21kworker/0:211:56:070
2288750370irq/30-eth0_g0_22885-21kworker/0:211:53:040
2288750370irq/30-eth0_g0_22885-21kworker/0:211:49:410
2288750370irq/30-eth0_g0_22885-21kworker/0:211:15:010
2288750370irq/30-eth0_g0_22885-21kworker/0:210:51:560
2288750370irq/30-eth0_g0_14154-21proc_pri08:16:120
2288750370irq/30-eth0_g0_12609-21sendmail_mailqu08:06:151
2288750370irq/30-eth0_g0_121ksoftirqd/111:36:511
2288650370irq/29-eth0_g0_470-21kworker/1:112:17:251
2288650370irq/29-eth0_g0_229999cyclictest12:31:141
121370ksoftirqd/12288650irq/29-eth0_g0_08:49:321
121370ksoftirqd/12288650irq/29-eth0_g0_08:49:321
229999362cyclictest17956-21latency12:01:091
2288750360irq/30-eth0_g0_27310-21unixbench_singl09:36:170
2288750360irq/30-eth0_g0_22885-21kworker/0:209:57:390
2288650360irq/29-eth0_g0_7886-21unixbench_singl07:36:151
2288650360irq/29-eth0_g0_6986-21cat07:31:201
2288650360irq/29-eth0_g0_4516-21sendmail_mailqu07:16:171
2288650360irq/29-eth0_g0_14365-21unixbench_singl08:16:151
2288650360irq/29-eth0_g0_12961-21df_abs08:11:091
2288650360irq/29-eth0_g0_121ksoftirqd/111:57:311
2288650360irq/29-eth0_g0_10533-21df07:56:071
121360ksoftirqd/12288750irq/30-eth0_g0_08:26:150
121360ksoftirqd/12288650irq/29-eth0_g0_07:44:321
2288750350irq/30-eth0_g0_8406-21ntp_kernel_err07:41:110
2288750350irq/30-eth0_g0_3633-21proc_pri07:11:150
2288750350irq/30-eth0_g0_121ksoftirqd/111:26:281
2288650350irq/29-eth0_g0_470-21kworker/1:110:37:351
121350ksoftirqd/12288750irq/30-eth0_g0_07:26:100
121350ksoftirqd/12288650irq/29-eth0_g0_07:06:151
229999348cyclictest2288650irq/29-eth0_g0_11:31:101
2288750340irq/30-eth0_g0_2896-21sendmail_mailqu07:06:140
2288750340irq/30-eth0_g0_22885-21kworker/0:211:31:000
2288750340irq/30-eth0_g0_15248-21latency_hist08:25:540
2288750340irq/30-eth0_g0_11950-21head08:01:180
2288650340irq/29-eth0_g0_18055-21/usr/sbin/munin08:41:081
2288650340irq/29-eth0_g0_15123-21sed08:21:141
2288650340irq/29-eth0_g0_0-21swapper/107:21:091
2288750330irq/30-eth0_g0_5492-21unixbench_singl07:21:170
2288750330irq/30-eth0_g0_19985-21unixbench_multi08:51:160
2288750330irq/30-eth0_g0_13261-21ntp_kernel_err08:11:130
2288750330irq/30-eth0_g0_12721-21unixbench_multi08:06:160
2288750330irq/30-eth0_g0_11131-21head07:56:160
2288650330irq/29-eth0_g0_9502-21unixbench_singl07:46:140
2288650330irq/29-eth0_g0_20793-21grep08:56:151
2288650330irq/29-eth0_g0_16113-21sort08:30:551
121330ksoftirqd/12288750irq/30-eth0_g0_07:36:150
229999321cyclictest0-21swapper/107:26:071
2288750320irq/30-eth0_g0_4061-21sed07:16:090
2288750320irq/30-eth0_g0_229999cyclictest09:01:131
2288750320irq/30-eth0_g0_229999cyclictest09:01:131
2288750320irq/30-eth0_g0_18919-21awk08:46:110
2288750320irq/30-eth0_g0_18919-21awk08:46:110
2288750320irq/30-eth0_g0_17574-21unixbench_multi08:36:180
2288650320irq/29-eth0_g0_3952-21sort07:15:551
2288650320irq/29-eth0_g0_0-21swapper/108:51:111
2288650310irq/29-eth0_g0_6789-21ntpdc07:31:110
229999301cyclictest10034-21ntp_kernel_pll_07:51:121
2288650300irq/29-eth0_g0_16758-21unixbench_multi08:31:151
2288650300irq/29-eth0_g0_11405-21df_abs08:01:081
2288650280irq/29-eth0_g0_20822-21/usr/sbin/munin08:56:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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