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2026-08-09 - 09:44

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 Sun Aug 09, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2189621720chrt121650irq/29-eth0_g0_23:38:480
1211220ksoftirqd/1121750irq/30-eth0_g0_23:28:071
1211080ksoftirqd/1121750irq/30-eth0_g0_22:14:361
121790ksoftirqd/1121750irq/30-eth0_g0_21:50:221
23922750sleep0121650irq/29-eth0_g0_22:19:400
121680ksoftirqd/1121750irq/30-eth0_g0_00:04:351
253732620sleep1121750irq/30-eth0_g0_23:52:151
181512570sleep0121650irq/29-eth0_g0_23:22:580
121540ksoftirqd/1121750irq/30-eth0_g0_00:32:441
121540ksoftirqd/1121750irq/30-eth0_g0_00:32:441
83272530sleep0121750irq/30-eth0_g0_22:42:310
46322530sleep0121650irq/29-eth0_g0_22:27:170
121650480irq/29-eth0_g0_29624-21unixbench_multi21:57:160
121460ksoftirqd/1121750irq/30-eth0_g0_21:17:171
121460ksoftirqd/1121750irq/30-eth0_g0_21:17:171
121460ksoftirqd/1121650irq/29-eth0_g0_23:35:411
121460ksoftirqd/1121650irq/29-eth0_g0_23:35:411
121460ksoftirqd/1121650irq/29-eth0_g0_22:57:300
121750440irq/30-eth0_g0_1219-21kworker/1:221:36:061
121750440irq/30-eth0_g0_1219-21kworker/1:221:36:061
121650440irq/29-eth0_g0_1964-21runrttasks19:04:470
121750430irq/30-eth0_g0_1219-21kworker/1:222:51:581
121650430irq/29-eth0_g0_31ksoftirqd/021:26:540
121430ksoftirqd/1121750irq/30-eth0_g0_22:06:560
121430ksoftirqd/1121650irq/29-eth0_g0_23:21:280
121430ksoftirqd/1121650irq/29-eth0_g0_22:42:151
121430ksoftirqd/1121650irq/29-eth0_g0_22:15:370
121430ksoftirqd/1121650irq/29-eth0_g0_21:07:280
121750420irq/30-eth0_g0_24477-21ntp_states21:37:121
121750420irq/30-eth0_g0_1219-21kworker/1:223:51:061
121750420irq/30-eth0_g0_1219-21kworker/1:223:09:181
121750420irq/30-eth0_g0_121ksoftirqd/121:16:511
121650420irq/29-eth0_g0_31ksoftirqd/021:16:580
121650420irq/29-eth0_g0_31ksoftirqd/021:16:580
121650420irq/29-eth0_g0_31ksoftirqd/000:16:580
121650420irq/29-eth0_g0_23449-21latency_hist19:21:540
121650420irq/29-eth0_g0_1964-21runrttasks21:35:220
121650420irq/29-eth0_g0_1964-21runrttasks21:35:220
121650420irq/29-eth0_g0_121ksoftirqd/100:15:060
121750410irq/30-eth0_g0_1219-21kworker/1:223:18:411
121750410irq/30-eth0_g0_1219-21kworker/1:223:00:091
121750410irq/30-eth0_g0_0-21swapper/100:22:101
121650410irq/29-eth0_g0_31ksoftirqd/021:52:570
121650410irq/29-eth0_g0_1973299cyclictest21:41:410
121650410irq/29-eth0_g0_121ksoftirqd/123:42:121
121410ksoftirqd/1121650irq/29-eth0_g0_22:04:221
19733994024cyclictest1964-21runrttasks19:59:391
1973399401cyclictest30791-21grep00:16:541
121750400irq/30-eth0_g0_267722sleep123:58:321
121650400irq/29-eth0_g0_31ksoftirqd/023:43:240
121650400irq/29-eth0_g0_1973299cyclictest00:29:090
121650400irq/29-eth0_g0_13-21kworker/0:123:55:090
121650400irq/29-eth0_g0_13-21kworker/0:122:06:410
121650400irq/29-eth0_g0_13-21kworker/0:121:45:130
121400ksoftirqd/1121650irq/29-eth0_g0_21:24:541
121400ksoftirqd/1121650irq/29-eth0_g0_20:55:161
19733993925cyclictest1964-21runrttasks19:12:351
1973399392cyclictest17903-21cat21:11:541
121750390irq/30-eth0_g0_31ksoftirqd/021:31:410
121750390irq/30-eth0_g0_1219-21kworker/1:222:07:441
121750390irq/30-eth0_g0_1219-21kworker/1:221:56:571
121750390irq/30-eth0_g0_1219-21kworker/1:200:20:011
121750390irq/30-eth0_g0_121ksoftirqd/123:12:411
121750390irq/30-eth0_g0_121ksoftirqd/122:49:531
121750390irq/30-eth0_g0_0-21swapper/121:52:411
121650390irq/29-eth0_g0_26354-21open_files23:57:130
121650390irq/29-eth0_g0_13-21kworker/0:122:54:000
121650390irq/29-eth0_g0_13-21kworker/0:122:39:000
121650390irq/29-eth0_g0_13-21kworker/0:122:25:540
121650390irq/29-eth0_g0_13-21kworker/0:121:51:110
121650390irq/29-eth0_g0_13-21kworker/0:121:12:030
121390ksoftirqd/1121750irq/30-eth0_g0_23:10:320
121390ksoftirqd/1121750irq/30-eth0_g0_23:05:240
121390ksoftirqd/1121750irq/30-eth0_g0_22:36:040
121390ksoftirqd/1121750irq/30-eth0_g0_21:01:100
121390ksoftirqd/1121750irq/30-eth0_g0_20:48:410
121390ksoftirqd/1121750irq/30-eth0_g0_20:38:520
121390ksoftirqd/1121750irq/30-eth0_g0_19:59:130
121390ksoftirqd/1121750irq/30-eth0_g0_19:38:420
121390ksoftirqd/1121750irq/30-eth0_g0_19:25:220
121390ksoftirqd/1121750irq/30-eth0_g0_19:13:520
121390ksoftirqd/1121750irq/30-eth0_g0_00:07:020
121390ksoftirqd/1121750irq/30-eth0_g0_00:04:140
121390ksoftirqd/1121650irq/29-eth0_g0_20:57:541
219322380sleep1121650irq/29-eth0_g0_23:39:131
1973399381cyclictest2093-21snmpd23:22:301
121750380irq/30-eth0_g0_1807-21seq00:30:031
121750380irq/30-eth0_g0_1219-21kworker/1:222:30:421
121750380irq/30-eth0_g0_1219-21kworker/1:200:08:071
121750380irq/30-eth0_g0_0-21swapper/122:40:401
121750380irq/30-eth0_g0_0-21swapper/122:32:071
121650380irq/29-eth0_g0_7636-21unixbench_singl20:27:160
121650380irq/29-eth0_g0_1964-21runrttasks23:33:020
121650380irq/29-eth0_g0_1964-21runrttasks23:33:020
121650380irq/29-eth0_g0_13-21kworker/0:123:13:070
121650380irq/29-eth0_g0_13-21kworker/0:100:33:540
121650380irq/29-eth0_g0_13-21kworker/0:100:33:540
121380ksoftirqd/1121750irq/30-eth0_g0_20:52:290
121380ksoftirqd/1121650irq/29-eth0_g0_21:05:391
121380ksoftirqd/1121650irq/29-eth0_g0_20:41:511
1973399372cyclictest12840-21ntpdc23:02:111
1973399371cyclictest27061-21munin-plugin-st19:36:531
1973399371cyclictest0-21swapper/119:17:101
121750370irq/30-eth0_g0_19729-21latencyplot19:06:531
121750370irq/30-eth0_g0_1219-21kworker/1:221:26:561
121750370irq/30-eth0_g0_0-21swapper/121:43:191
121650370irq/29-eth0_g0_8378-21if_eth020:32:070
121650370irq/29-eth0_g0_30818-21cpu19:52:050
121650370irq/29-eth0_g0_26629-21unixbench_singl19:32:170
121650370irq/29-eth0_g0_13-21kworker/0:123:50:050
121650370irq/29-eth0_g0_13-21kworker/0:122:49:310
1973399361cyclictest8841-21unixbench_singl20:32:151
1973399361cyclictest16639-21diskmemload22:17:061
1973399361cyclictest12237-21taskset20:47:121
1973399361cyclictest1018-21awk20:02:071
1973399361cyclictest1018-21awk20:02:071
1973399361cyclictest0-21swapper/119:37:111
121750360irq/30-eth0_g0_30949-21df19:52:061
121650360irq/29-eth0_g0_29723-21df_abs19:47:071
121650360irq/29-eth0_g0_1964-21runrttasks20:46:360
121650360irq/29-eth0_g0_1964-21runrttasks20:20:570
121650360irq/29-eth0_g0_13-21kworker/0:123:27:520
121650360irq/29-eth0_g0_13-21kworker/0:100:22:350
121650360irq/29-eth0_g0_0-21swapper/020:12:170
121360ksoftirqd/1121650irq/29-eth0_g0_20:16:191
1973399351cyclictest7410-21ps20:27:131
1973399351cyclictest5105-21wc20:17:151
1973399351cyclictest2903-21iostat22:22:091
1973399351cyclictest2767-21unixbench_singl20:07:161
1973399351cyclictest0-21swapper/119:30:061
121650350irq/29-eth0_g0_28446-21df_abs19:42:060
121650350irq/29-eth0_g0_20502-21sed19:07:170
121650350irq/29-eth0_g0_1964-21runrttasks20:24:020
121650350irq/29-eth0_g0_1964-21runrttasks20:11:130
121650350irq/29-eth0_g0_1964-21runrttasks19:24:561
1973399341cyclictest10997-21awk20:42:111
121650340irq/29-eth0_g0_30155-21chrt19:47:150
121650340irq/29-eth0_g0_1964-21runrttasks19:44:191
121650340irq/29-eth0_g0_16182-21grep21:02:150
1973399331cyclictest6472-21sshd20:22:251
121650320irq/29-eth0_g0_864-21df20:02:050
121650320irq/29-eth0_g0_864-21df20:02:050
1973399311cyclictest19892-21sshd19:07:071
121650310irq/29-eth0_g0_0-21swapper/019:27:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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