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2025-11-21 - 18:24

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 Fri Nov 21, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2093021130sleep1121650irq/29-eth0_g0_11:16:031
114822740sleep1121750irq/30-eth0_g0_08:25:081
121690ksoftirqd/1121750irq/30-eth0_g0_12:31:511
253242610sleep1121750irq/30-eth0_g0_09:22:231
121520ksoftirqd/1121750irq/30-eth0_g0_11:42:421
86522510sleep1121650irq/29-eth0_g0_10:25:321
245812510sleep0121650irq/29-eth0_g0_11:30:440
121510ksoftirqd/1121750irq/30-eth0_g0_11:09:511
121500ksoftirqd/1121750irq/30-eth0_g0_09:09:581
121500ksoftirqd/1121750irq/30-eth0_g0_09:09:581
121650490irq/29-eth0_g0_0-21swapper/010:01:310
121480ksoftirqd/1121750irq/30-eth0_g0_12:06:501
121470ksoftirqd/1121750irq/30-eth0_g0_10:03:071
121460ksoftirqd/1121750irq/30-eth0_g0_09:49:311
121650450irq/29-eth0_g0_31ksoftirqd/012:09:400
121650450irq/29-eth0_g0_1894-21runrttasks10:07:320
121450ksoftirqd/1121750irq/30-eth0_g0_10:18:331
273792440sleep0121650irq/29-eth0_g0_11:44:470
121440ksoftirqd/1121650irq/29-eth0_g0_08:42:531
121750430irq/30-eth0_g0_1219-21kworker/1:212:20:381
121750430irq/30-eth0_g0_1219-21kworker/1:211:33:101
121650430irq/29-eth0_g0_31ksoftirqd/010:20:020
121430ksoftirqd/1121750irq/30-eth0_g0_09:37:561
121430ksoftirqd/1121650irq/29-eth0_g0_11:26:531
121750420irq/30-eth0_g0_22036-21chrt11:20:111
121750420irq/30-eth0_g0_1219-21kworker/1:212:03:041
121750420irq/30-eth0_g0_1219-21kworker/1:211:54:411
121750420irq/30-eth0_g0_1219-21kworker/1:209:31:471
121650420irq/29-eth0_g0_0-21swapper/007:05:080
121420ksoftirqd/1121750irq/30-eth0_g0_11:56:070
121750410irq/30-eth0_g0_1219-21kworker/1:210:40:281
121750410irq/30-eth0_g0_1219-21kworker/1:210:07:271
121650410irq/29-eth0_g0_31ksoftirqd/012:32:090
121650410irq/29-eth0_g0_27225-21awk09:30:030
121650410irq/29-eth0_g0_13-21kworker/0:110:26:230
121650410irq/29-eth0_g0_13-21kworker/0:109:44:100
121410ksoftirqd/1121750irq/30-eth0_g0_11:18:320
121410ksoftirqd/1121750irq/30-eth0_g0_08:15:070
284162400sleep1121750irq/30-eth0_g0_11:47:391
2492599401cyclictest7731-21ps08:10:051
121750400irq/30-eth0_g0_1219-21kworker/1:210:50:011
121750400irq/30-eth0_g0_121ksoftirqd/109:58:401
121650400irq/29-eth0_g0_32133-21ntp_offset09:50:050
121650400irq/29-eth0_g0_31ksoftirqd/010:40:130
121650400irq/29-eth0_g0_31ksoftirqd/009:28:090
121650400irq/29-eth0_g0_31ksoftirqd/009:21:260
121650400irq/29-eth0_g0_13-21kworker/0:111:22:190
121650400irq/29-eth0_g0_13-21kworker/0:110:58:530
121650400irq/29-eth0_g0_13-21kworker/0:109:39:350
121650400irq/29-eth0_g0_13-21kworker/0:109:16:480
121650400irq/29-eth0_g0_121ksoftirqd/108:20:030
121400ksoftirqd/1121750irq/30-eth0_g0_11:49:400
2492599392cyclictest13722sleep107:45:011
2492599392cyclictest12393-21irqstats08:30:031
2492599391cyclictest5462-21grep08:00:101
2492599391cyclictest13445-21chrt08:34:591
121750390irq/30-eth0_g0_31ksoftirqd/011:06:150
121750390irq/30-eth0_g0_1219-21kworker/1:211:55:071
121750390irq/30-eth0_g0_1219-21kworker/1:210:46:401
121750390irq/30-eth0_g0_1219-21kworker/1:210:10:371
121650390irq/29-eth0_g0_13-21kworker/0:112:27:460
121650390irq/29-eth0_g0_13-21kworker/0:112:27:460
121650390irq/29-eth0_g0_13-21kworker/0:112:17:270
121650390irq/29-eth0_g0_13-21kworker/0:111:52:530
121650390irq/29-eth0_g0_13-21kworker/0:111:12:440
121650390irq/29-eth0_g0_13-21kworker/0:110:47:580
121650390irq/29-eth0_g0_13-21kworker/0:110:14:310
121390ksoftirqd/1121750irq/30-eth0_g0_10:32:260
121390ksoftirqd/1121750irq/30-eth0_g0_09:51:481
121390ksoftirqd/1121750irq/30-eth0_g0_09:47:100
121390ksoftirqd/1121750irq/30-eth0_g0_07:15:380
44182380sleep0121750irq/30-eth0_g0_12:21:000
2492599383cyclictest1913-21/usr/sbin/munin08:06:441
2492599381cyclictest4238-21grep07:55:081
2492599381cyclictest19722-21interrupts09:00:001
2492599381cyclictest16991-21grep08:49:471
121750380irq/30-eth0_g0_1219-21kworker/1:212:15:461
121750380irq/30-eth0_g0_1219-21kworker/1:211:34:591
121750380irq/30-eth0_g0_1219-21kworker/1:211:08:401
121750380irq/30-eth0_g0_121ksoftirqd/112:37:021
121750380irq/30-eth0_g0_0-21swapper/110:37:051
121650380irq/29-eth0_g0_5500-21unixbench_singl08:00:100
121650380irq/29-eth0_g0_32276-21latency_hist12:04:480
121650380irq/29-eth0_g0_31ksoftirqd/009:10:030
121650380irq/29-eth0_g0_31ksoftirqd/009:10:030
121650380irq/29-eth0_g0_24553-21runrttasks07:05:371
121650380irq/29-eth0_g0_18811-21find08:55:080
121650380irq/29-eth0_g0_15143-21sendmail_mailqu08:40:090
121650380irq/29-eth0_g0_13-21kworker/0:110:50:090
121650380irq/29-eth0_g0_13-21kworker/0:110:35:010
121380ksoftirqd/1121750irq/30-eth0_g0_10:30:301
2492599372cyclictest10400-21grep08:20:111
2492599371cyclictest5769-21taskset12:27:321
2492599371cyclictest5769-21taskset12:27:321
2492599371cyclictest3103-21grep07:50:231
2492599371cyclictest15648-21/usr/sbin/munin10:55:071
2492599371cyclictest0-21swapper/110:23:251
121750370irq/30-eth0_g0_1219-21kworker/1:209:40:581
121650370irq/29-eth0_g0_32694-21runrttasks07:40:070
121650370irq/29-eth0_g0_32694-21runrttasks07:40:070
121650370irq/29-eth0_g0_25660-21unixbench_multi07:10:100
121650370irq/29-eth0_g0_13-21kworker/0:111:36:360
121650370irq/29-eth0_g0_13-21kworker/0:111:28:010
121650370irq/29-eth0_g0_13-21kworker/0:109:58:110
121650370irq/29-eth0_g0_11002-21df_abs08:24:590
2492599362cyclictest29356-21grep07:25:071
2492599362cyclictest16885-21/usr/sbin/munin11:00:151
2492599361cyclictest28033-21cat07:20:071
2492599361cyclictest26900-21grep07:15:101
121750360irq/30-eth0_g0_20725-21/usr/sbin/munin09:05:081
121750360irq/30-eth0_g0_17741-21grep08:50:091
121750360irq/30-eth0_g0_1219-21kworker/1:212:11:361
121750360irq/30-eth0_g0_1219-21kworker/1:209:28:071
121750360irq/30-eth0_g0_1219-21kworker/1:209:15:191
121650360irq/29-eth0_g0_2492499cyclictest12:35:100
121650360irq/29-eth0_g0_1894-21runrttasks09:06:570
121650360irq/29-eth0_g0_1894-21runrttasks08:09:470
121650360irq/29-eth0_g0_13-21kworker/0:112:11:450
121650360irq/29-eth0_g0_13-21kworker/0:110:16:080
121650360irq/29-eth0_g0_12540-21ntpdc08:30:050
121650360irq/29-eth0_g0_0-21swapper/011:03:440
2492599351cyclictest942-21taskset07:43:501
2492599351cyclictest942-21taskset07:43:501
121650350irq/29-eth0_g0_31782-21unixbench_multi07:35:100
121650350irq/29-eth0_g0_3081-21unixbench_singl07:50:230
121650350irq/29-eth0_g0_27710-21sed07:20:000
121650350irq/29-eth0_g0_1894-21runrttasks08:39:160
121650350irq/29-eth0_g0_1894-21runrttasks08:14:300
121650350irq/29-eth0_g0_1894-21runrttasks07:25:520
121650350irq/29-eth0_g0_17421-21netstat08:50:040
121650350irq/29-eth0_g0_16473-21unixbench_multi08:45:100
121650350irq/29-eth0_g0_121ksoftirqd/108:59:471
121650340irq/29-eth0_g0_4253-21unixbench_multi07:55:080
121650340irq/29-eth0_g0_20136-21unixbench_multi09:00:080
121650340irq/29-eth0_g0_1894-21runrttasks07:34:100
121340ksoftirqd/1121650irq/29-eth0_g0_07:35:041
121750330irq/30-eth0_g0_30059-21df_inode07:29:591
121750330irq/30-eth0_g0_25148-21df07:10:011
121650330irq/29-eth0_g0_0-21swapper/007:45:010
121650320irq/29-eth0_g0_9240-21runrttasks08:15:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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