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2026-06-26 - 10:40

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Fri Jun 26, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
323432950sleep0121650irq/29-eth0_g0_23:15:050
121900ksoftirqd/1121750irq/30-eth0_g0_19:58:421
121740ksoftirqd/1121750irq/30-eth0_g0_00:25:431
121660ksoftirqd/1121750irq/30-eth0_g0_22:31:350
69122590sleep1121750irq/30-eth0_g0_23:43:591
121510ksoftirqd/1310912sleep023:09:440
121510ksoftirqd/1121750irq/30-eth0_g0_21:10:261
168772500sleep1121650irq/29-eth0_g0_22:13:511
145392460chrt121750irq/30-eth0_g0_00:14:070
121460ksoftirqd/1121750irq/30-eth0_g0_23:29:301
121460ksoftirqd/1121750irq/30-eth0_g0_22:44:311
190912440chrt121750irq/30-eth0_g0_22:22:421
121650440irq/29-eth0_g0_1964-21runrttasks19:08:390
121440ksoftirqd/1121650irq/29-eth0_g0_22:38:391
121440ksoftirqd/1121650irq/29-eth0_g0_22:38:391
310082430sleep031012-21df_abs20:58:510
121750430irq/30-eth0_g0_18233-21chrt00:29:301
121750430irq/30-eth0_g0_1219-21kworker/1:222:05:271
121650430irq/29-eth0_g0_31ksoftirqd/021:28:340
121650430irq/29-eth0_g0_2093-21snmpd21:08:510
121430ksoftirqd/1121650irq/29-eth0_g0_23:57:291
78692420sleep0121650irq/29-eth0_g0_21:35:070
121750420irq/30-eth0_g0_1219-21kworker/1:222:13:271
121650420irq/29-eth0_g0_121ksoftirqd/121:31:050
121420ksoftirqd/1121650irq/29-eth0_g0_23:33:511
393599411cyclictest783-21diskmemload23:38:551
121750410irq/30-eth0_g0_1219-21kworker/1:223:22:571
121750410irq/30-eth0_g0_1219-21kworker/1:221:59:381
121750410irq/30-eth0_g0_121ksoftirqd/122:54:151
121650410irq/29-eth0_g0_31ksoftirqd/023:42:180
121650410irq/29-eth0_g0_31ksoftirqd/021:21:030
121650410irq/29-eth0_g0_13-21kworker/0:123:48:500
121650410irq/29-eth0_g0_0-21swapper/020:58:390
121410ksoftirqd/1121750irq/30-eth0_g0_23:32:340
121410ksoftirqd/1121750irq/30-eth0_g0_21:44:260
121410ksoftirqd/1121650irq/29-eth0_g0_22:51:171
121410ksoftirqd/1121650irq/29-eth0_g0_21:40:171
393599405cyclictest0-21swapper/119:28:581
393599401cyclictest783-21diskmemload22:23:561
393599401cyclictest19224-21sendmail_mailqu20:08:591
121750400irq/30-eth0_g0_1219-21kworker/1:223:04:071
121750400irq/30-eth0_g0_121ksoftirqd/121:54:371
121650400irq/29-eth0_g0_31ksoftirqd/022:14:020
121650400irq/29-eth0_g0_225232sleep022:34:520
121650400irq/29-eth0_g0_225232sleep022:34:520
121650400irq/29-eth0_g0_13-21kworker/0:123:54:220
121650400irq/29-eth0_g0_13-21kworker/0:122:51:530
121650400irq/29-eth0_g0_13-21kworker/0:122:26:370
121650400irq/29-eth0_g0_13-21kworker/0:122:12:210
121650400irq/29-eth0_g0_13-21kworker/0:100:23:040
121650400irq/29-eth0_g0_121ksoftirqd/123:44:520
121400ksoftirqd/1121750irq/30-eth0_g0_00:38:121
121400ksoftirqd/1121650irq/29-eth0_g0_21:26:431
393599391cyclictest2835-21unixbench_singl21:14:021
393599391cyclictest2835-21unixbench_singl21:14:021
393599391cyclictest13126-21chrt00:09:011
393599391cyclictest12031-21grep00:04:031
121750390irq/30-eth0_g0_3933-21cyclictest23:24:011
121750390irq/30-eth0_g0_1219-21kworker/1:223:53:131
121750390irq/30-eth0_g0_0-21swapper/123:13:401
121650390irq/29-eth0_g0_393499cyclictest23:38:150
121650390irq/29-eth0_g0_31ksoftirqd/022:54:010
121650390irq/29-eth0_g0_13-21kworker/0:123:18:450
121650390irq/29-eth0_g0_13-21kworker/0:122:46:500
121650390irq/29-eth0_g0_13-21kworker/0:121:49:060
121390ksoftirqd/1121750irq/30-eth0_g0_22:41:000
121390ksoftirqd/1121750irq/30-eth0_g0_22:07:430
121390ksoftirqd/1121750irq/30-eth0_g0_21:55:500
121390ksoftirqd/1121750irq/30-eth0_g0_20:02:110
121390ksoftirqd/1121750irq/30-eth0_g0_19:11:460
121390ksoftirqd/1121650irq/29-eth0_g0_00:03:401
393599382cyclictest29013-21cat23:03:401
393599381cyclictest5812-21/usr/sbin/munin21:28:591
393599381cyclictest112702sleep119:38:401
121750380irq/30-eth0_g0_2856-21df19:03:511
121750380irq/30-eth0_g0_1219-21kworker/1:222:39:201
121750380irq/30-eth0_g0_0-21swapper/100:20:421
121650380irq/29-eth0_g0_31ksoftirqd/023:04:500
121650380irq/29-eth0_g0_28008-21entropy22:58:510
121650380irq/29-eth0_g0_13-21kworker/0:122:02:000
121650380irq/29-eth0_g0_13-21kworker/0:121:14:270
121650380irq/29-eth0_g0_13-21kworker/0:121:14:270
121650380irq/29-eth0_g0_13-21kworker/0:100:36:090
121650380irq/29-eth0_g0_13-21kworker/0:100:30:510
121650380irq/29-eth0_g0_13-21kworker/0:100:25:540
121650380irq/29-eth0_g0_11147-21runrttasks00:02:240
121380ksoftirqd/1121750irq/30-eth0_g0_20:45:490
121380ksoftirqd/1121750irq/30-eth0_g0_20:28:110
121380ksoftirqd/1121650irq/29-eth0_g0_23:25:070
393599372cyclictest23794-21iostat20:28:541
393599371cyclictest9881-21grep21:43:581
393599371cyclictest3753-21grep21:18:561
393599371cyclictest14989-21grep19:53:401
393599371cyclictest14486-21head00:14:031
393599371cyclictest11999-21unixbench_multi19:39:001
121750370irq/30-eth0_g0_4493-21proc_pri19:08:581
121750370irq/30-eth0_g0_31ksoftirqd/022:18:550
121750370irq/30-eth0_g0_121ksoftirqd/122:30:061
121650370irq/29-eth0_g0_393599cyclictest20:38:531
121650370irq/29-eth0_g0_31ksoftirqd/000:04:540
121650370irq/29-eth0_g0_1964-21runrttasks19:25:560
121650370irq/29-eth0_g0_13-21kworker/0:121:41:240
121370ksoftirqd/1121650irq/29-eth0_g0_21:05:281
121370ksoftirqd/1121650irq/29-eth0_g0_19:46:441
121370ksoftirqd/1121650irq/29-eth0_g0_19:17:591
393599361cyclictest11371-21tail21:49:031
393599361cyclictest0-21swapper/120:48:211
393599361cyclictest0-21swapper/120:27:061
121750360irq/30-eth0_g0_1219-21kworker/1:223:09:011
121750360irq/30-eth0_g0_1219-21kworker/1:221:33:541
121650360irq/29-eth0_g0_309-21grep21:04:020
121650360irq/29-eth0_g0_31ksoftirqd/000:11:060
121650360irq/29-eth0_g0_24846-21runrttasks20:33:510
121650360irq/29-eth0_g0_1964-21runrttasks19:47:230
121650360irq/29-eth0_g0_1964-21runrttasks19:16:490
121650360irq/29-eth0_g0_19121-21/usr/sbin/munin20:08:580
121650360irq/29-eth0_g0_15410-21awk19:53:560
393599351cyclictest21313-21sshd20:18:521
393599351cyclictest0-21swapper/120:05:451
121650350irq/29-eth0_g0_9580-21unixbench_multi19:29:000
121650350irq/29-eth0_g0_7008-21find19:18:580
121350ksoftirqd/1121650irq/29-eth0_g0_20:59:001
393599341cyclictest7840-21df_abs19:23:511
121750340irq/30-eth0_g0_30788-21taskset20:58:391
121750340irq/30-eth0_g0_15170-21df_abs19:53:511
121650340irq/29-eth0_g0_21122-21taskset20:18:490
121650340irq/29-eth0_g0_20528-21grep20:14:000
121650340irq/29-eth0_g0_1964-21runrttasks20:52:220
121650340irq/29-eth0_g0_11686-21cat19:38:550
121650340irq/29-eth0_g0_10677-21rt-features19:34:010
393599331cyclictest0-21swapper/120:13:541
121750330irq/30-eth0_g0_393599cyclictest20:33:571
121750330irq/30-eth0_g0_29568-21munin-run20:53:391
121650330irq/29-eth0_g0_26383-21awk20:38:540
121650330irq/29-eth0_g0_24697-21cat20:33:400
121650330irq/29-eth0_g0_17706-21irqstats20:03:540
121650330irq/29-eth0_g0_14273-21proc_pri19:48:580
121650310irq/29-eth0_g0_6698-21seq19:18:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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