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2026-06-23 - 20:29

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 highest latencies:
System rack3slot5s.osadl.org (updated Tue Jun 23, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211020ksoftirqd/1121750irq/30-eth0_g0_12:22:061
2486121010sleep0121750irq/30-eth0_g0_10:13:090
121860ksoftirqd/1121750irq/30-eth0_g0_09:54:010
188752740sleep1121750irq/30-eth0_g0_11:59:061
188752740sleep1121750irq/30-eth0_g0_11:59:061
228692690sleep0121750irq/30-eth0_g0_12:16:010
188922680sleep1121750irq/30-eth0_g0_09:48:561
121670ksoftirqd/1121650irq/29-eth0_g0_09:48:461
121600ksoftirqd/1310932sleep010:38:460
35982530sleep1121750irq/30-eth0_g0_10:58:521
221722530sleep0121750irq/30-eth0_g0_10:00:200
121510ksoftirqd/1121750irq/30-eth0_g0_10:09:261
121500ksoftirqd/1121750irq/30-eth0_g0_09:18:191
141772490sleep1121750irq/30-eth0_g0_11:39:331
121490ksoftirqd/1121750irq/30-eth0_g0_11:12:081
121480ksoftirqd/1121650irq/29-eth0_g0_07:13:241
121480ksoftirqd/1121650irq/29-eth0_g0_07:13:241
121470ksoftirqd/1121650irq/29-eth0_g0_11:24:450
121750460irq/30-eth0_g0_121ksoftirqd/107:04:061
121460ksoftirqd/1121750irq/30-eth0_g0_10:33:071
121650450irq/29-eth0_g0_31ksoftirqd/007:04:000
121450ksoftirqd/1121650irq/29-eth0_g0_09:29:491
121750440irq/30-eth0_g0_2109-21lldpd11:32:301
121750440irq/30-eth0_g0_1219-21kworker/1:210:43:211
121750440irq/30-eth0_g0_1219-21kworker/1:209:25:051
121650440irq/29-eth0_g0_1964-21runrttasks08:58:270
121650440irq/29-eth0_g0_1964-21runrttasks08:58:270
121440ksoftirqd/1121750irq/30-eth0_g0_12:18:181
121750430irq/30-eth0_g0_1219-21kworker/1:212:37:331
121650430irq/29-eth0_g0_21336-21timerandwakeup12:09:070
12113994329cyclictest1964-21runrttasks07:29:091
121430ksoftirqd/1121650irq/29-eth0_g0_11:46:441
121430ksoftirqd/1121650irq/29-eth0_g0_11:46:441
121430ksoftirqd/1121650irq/29-eth0_g0_10:49:081
121750420irq/30-eth0_g0_1219-21kworker/1:209:59:381
121650420irq/29-eth0_g0_1964-21runrttasks09:24:060
121420ksoftirqd/1121650irq/29-eth0_g0_11:48:491
121750410irq/30-eth0_g0_1219-21kworker/1:211:03:531
121750410irq/30-eth0_g0_0-21swapper/112:09:021
121650410irq/29-eth0_g0_31ksoftirqd/010:29:050
121650410irq/29-eth0_g0_31ksoftirqd/010:08:290
121650410irq/29-eth0_g0_31ksoftirqd/009:18:470
121650410irq/29-eth0_g0_31ksoftirqd/007:33:460
121650410irq/29-eth0_g0_13-21kworker/0:111:08:450
121410ksoftirqd/1121650irq/29-eth0_g0_12:29:070
121410ksoftirqd/1121650irq/29-eth0_g0_09:04:041
121750400irq/30-eth0_g0_1219-21kworker/1:212:05:161
121750400irq/30-eth0_g0_1219-21kworker/1:210:16:081
121750400irq/30-eth0_g0_121ksoftirqd/109:11:461
121650400irq/29-eth0_g0_31ksoftirqd/011:19:400
121650400irq/29-eth0_g0_13-21kworker/0:112:36:320
121650400irq/29-eth0_g0_13-21kworker/0:110:55:570
121650400irq/29-eth0_g0_1211299cyclictest12:07:360
131612390sleep0121750irq/30-eth0_g0_11:37:000
121750390irq/30-eth0_g0_17142-21chrt11:53:551
121750390irq/30-eth0_g0_1219-21kworker/1:210:27:011
121750390irq/30-eth0_g0_121ksoftirqd/111:28:051
121750390irq/30-eth0_g0_121ksoftirqd/111:19:211
121750390irq/30-eth0_g0_121ksoftirqd/109:39:361
121650390irq/29-eth0_g0_31ksoftirqd/011:49:120
121650390irq/29-eth0_g0_14303-21missed_timers09:29:010
121650390irq/29-eth0_g0_13-21kworker/0:112:28:200
121650390irq/29-eth0_g0_13-21kworker/0:111:39:330
121650390irq/29-eth0_g0_13-21kworker/0:111:09:370
121650390irq/29-eth0_g0_13-21kworker/0:110:59:030
121650390irq/29-eth0_g0_13-21kworker/0:110:24:440
121650390irq/29-eth0_g0_13-21kworker/0:109:50:360
121650390irq/29-eth0_g0_13-21kworker/0:109:47:240
121650390irq/29-eth0_g0_121ksoftirqd/111:31:090
1211399392cyclictest3442-21ps08:44:051
1211399392cyclictest3442-21ps08:44:051
1211399391cyclictest7779-21taskset09:03:451
121390ksoftirqd/1121750irq/30-eth0_g0_07:17:080
121390ksoftirqd/1121650irq/29-eth0_g0_10:50:250
121750380irq/30-eth0_g0_31ksoftirqd/012:20:570
121750380irq/30-eth0_g0_1219-21kworker/1:212:28:531
121750380irq/30-eth0_g0_1219-21kworker/1:210:20:351
121750380irq/30-eth0_g0_121ksoftirqd/112:26:211
121750380irq/30-eth0_g0_0-21swapper/110:44:011
121750380irq/30-eth0_g0_0-21swapper/110:34:361
121650380irq/29-eth0_g0_31ksoftirqd/011:55:020
121650380irq/29-eth0_g0_31ksoftirqd/007:38:460
121650380irq/29-eth0_g0_16554-21grep07:24:070
121650380irq/29-eth0_g0_13-21kworker/0:112:03:320
121650380irq/29-eth0_g0_13-21kworker/0:112:03:320
121650380irq/29-eth0_g0_13-21kworker/0:110:43:500
121650380irq/29-eth0_g0_13-21kworker/0:110:41:340
121650380irq/29-eth0_g0_13-21kworker/0:109:15:140
1211399384cyclictest11891-21netstat09:19:011
12113993833cyclictest31141-21unixbench_multi08:24:091
1211399382cyclictest20648-21wc09:54:061
1211399381cyclictest1964-21runrttasks10:03:571
1211399381cyclictest145452sleep107:18:461
121650370irq/29-eth0_g0_4736-21/usr/sbin/munin08:49:040
121650370irq/29-eth0_g0_4736-21/usr/sbin/munin08:49:040
121650370irq/29-eth0_g0_32366-21unixbench_multi08:29:050
121650370irq/29-eth0_g0_31ksoftirqd/010:20:180
121650370irq/29-eth0_g0_27535-21head08:09:080
121650370irq/29-eth0_g0_26253-21unixbench_multi08:04:080
121650370irq/29-eth0_g0_25377-21netstat10:14:030
121650370irq/29-eth0_g0_22417-21proc_pri07:49:050
121650370irq/29-eth0_g0_1964-21runrttasks08:26:260
121650370irq/29-eth0_g0_13-21kworker/0:111:14:190
121650370irq/29-eth0_g0_13-21kworker/0:109:42:590
121650370irq/29-eth0_g0_13-21kworker/0:109:34:030
121650370irq/29-eth0_g0_13-21kworker/0:109:34:030
121650370irq/29-eth0_g0_12467-21cat07:09:010
121650370irq/29-eth0_g0_12467-21cat07:09:010
121650370irq/29-eth0_g0_121ksoftirqd/111:15:121
1211399371cyclictest2428-21grep08:39:071
1211399371cyclictest21253-21processes07:44:051
1211399371cyclictest0-21swapper/111:34:071
121370ksoftirqd/1121650irq/29-eth0_g0_08:08:571
121370ksoftirqd/1121650irq/29-eth0_g0_07:54:071
121370ksoftirqd/1121650irq/29-eth0_g0_07:54:071
121650360irq/29-eth0_g0_23483-21sort07:54:010
121650360irq/29-eth0_g0_23483-21sort07:54:010
121650360irq/29-eth0_g0_21129-21ntp_offset07:44:030
121650360irq/29-eth0_g0_2074-21missed_timers08:39:010
121650360irq/29-eth0_g0_15015-21ntpdc11:44:040
121650360irq/29-eth0_g0_15015-21ntpdc11:44:040
121650360irq/29-eth0_g0_14879-21latency07:19:000
121650360irq/29-eth0_g0_13-21kworker/0:109:08:530
121650360irq/29-eth0_g0_121ksoftirqd/109:35:331
121650360irq/29-eth0_g0_121ksoftirqd/109:35:331
1211399361cyclictest5892-21ps08:54:031
1211399361cyclictest5892-21ps08:54:031
1211399361cyclictest25710-21df_abs08:03:581
1211399360cyclictest0-21swapper/107:52:541
121360ksoftirqd/1121750irq/30-eth0_g0_10:56:021
121750350irq/30-eth0_g0_18943-21unixbench_multi07:34:071
121650350irq/29-eth0_g0_29953-21grep08:19:060
121650350irq/29-eth0_g0_28306-21latency08:14:010
121650350irq/29-eth0_g0_28306-21latency08:14:010
121650350irq/29-eth0_g0_2060-21sendmail08:01:250
121650350irq/29-eth0_g0_1964-21runrttasks09:05:180
1211399357cyclictest930-21open_inodes08:34:051
12113993529cyclictest1964-21runrttasks07:20:341
1211399351cyclictest28388-21missed_timers08:14:021
1211399351cyclictest28388-21missed_timers08:14:021
121650340irq/29-eth0_g0_7200-21sendmail_mailtr08:59:040
121650340irq/29-eth0_g0_1964-21runrttasks08:43:580
121650340irq/29-eth0_g0_1964-21runrttasks08:43:580
121650340irq/29-eth0_g0_1211399cyclictest08:48:561
121650340irq/29-eth0_g0_1211399cyclictest08:48:561
1211399341cyclictest0-21swapper/107:26:331
121750330irq/30-eth0_g0_29981-21unixbench_singl08:19:061
121650330irq/29-eth0_g0_630-21sed08:33:590
121650330irq/29-eth0_g0_19655-21df_abs07:38:570
1211399331cyclictest322652sleep108:29:041
1211399331cyclictest199172sleep107:39:031
121750310irq/30-eth0_g0_1211399cyclictest07:59:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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