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2026-06-01 - 00:39

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 May 31, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2288321610sleep0121750irq/30-eth0_g0_09:36:390
1211010ksoftirqd/1121750irq/30-eth0_g0_09:15:560
90322990sleep1121650irq/29-eth0_g0_10:54:031
90322990sleep1121650irq/29-eth0_g0_10:54:031
121960ksoftirqd/1121750irq/30-eth0_g0_12:38:251
151302840sleep1121650irq/29-eth0_g0_11:18:541
121840ksoftirqd/1121750irq/30-eth0_g0_10:37:130
300452760sleep1121750irq/30-eth0_g0_12:19:501
28982740sleep0121750irq/30-eth0_g0_10:28:510
128332670sleep0121750irq/30-eth0_g0_11:09:410
324312520sleep0121750irq/30-eth0_g0_12:29:460
121520ksoftirqd/1121750irq/30-eth0_g0_09:42:531
292602500sleep1121650irq/29-eth0_g0_10:04:361
121650480irq/29-eth0_g0_126442sleep011:08:230
29662470sleep1121750irq/30-eth0_g0_10:29:381
121750470irq/30-eth0_g0_121ksoftirqd/110:14:551
121470ksoftirqd/1121750irq/30-eth0_g0_11:27:051
9942460sleep1121650irq/29-eth0_g0_12:33:151
121460ksoftirqd/1121750irq/30-eth0_g0_11:39:351
121460ksoftirqd/1121750irq/30-eth0_g0_11:39:351
121460ksoftirqd/1121750irq/30-eth0_g0_11:05:091
121450ksoftirqd/1121650irq/29-eth0_g0_12:10:251
121450ksoftirqd/1121650irq/29-eth0_g0_11:42:311
121450ksoftirqd/1121650irq/29-eth0_g0_08:39:141
121650440irq/29-eth0_g0_13-21kworker/0:111:54:510
121440ksoftirqd/1121750irq/30-eth0_g0_09:53:221
121440ksoftirqd/1121650irq/29-eth0_g0_10:39:471
121440ksoftirqd/1121650irq/29-eth0_g0_10:34:301
121750430irq/30-eth0_g0_1219-21kworker/1:211:57:411
121430ksoftirqd/1121750irq/30-eth0_g0_12:19:500
121750420irq/30-eth0_g0_121ksoftirqd/112:25:021
121750420irq/30-eth0_g0_121ksoftirqd/111:19:551
121650420irq/29-eth0_g0_31ksoftirqd/012:24:580
121650420irq/29-eth0_g0_1964-21runrttasks09:08:240
121420ksoftirqd/1121750irq/30-eth0_g0_09:45:121
121420ksoftirqd/1121650irq/29-eth0_g0_12:05:191
121420ksoftirqd/1121650irq/29-eth0_g0_11:03:261
1881899412cyclictest2109-21lldpd08:04:401
121650410irq/29-eth0_g0_3038-21unixbench_multi08:15:010
121650410irq/29-eth0_g0_13-21kworker/0:112:36:450
121650410irq/29-eth0_g0_13-21kworker/0:110:49:570
121650410irq/29-eth0_g0_13-21kworker/0:110:49:570
121650410irq/29-eth0_g0_13-21kworker/0:110:01:290
121650410irq/29-eth0_g0_121ksoftirqd/110:23:030
1881899401cyclictest23831-21cat11:54:401
121750400irq/30-eth0_g0_5174-21seq10:36:531
121650400irq/29-eth0_g0_32185-21awk10:14:580
121650400irq/29-eth0_g0_31ksoftirqd/010:48:570
121650400irq/29-eth0_g0_28215-21sed12:10:010
121650400irq/29-eth0_g0_206122sleep009:28:440
121650400irq/29-eth0_g0_1964-21runrttasks07:08:140
121650400irq/29-eth0_g0_19220-21latency11:34:560
121650400irq/29-eth0_g0_19220-21latency11:34:560
121650400irq/29-eth0_g0_18398-21/usr/sbin/munin09:19:520
121650400irq/29-eth0_g0_13-21kworker/0:111:45:330
121650400irq/29-eth0_g0_13-21kworker/0:110:32:030
121650400irq/29-eth0_g0_0-21swapper/007:54:560
121400ksoftirqd/1121750irq/30-eth0_g0_08:44:551
1881899391cyclictest21816-21chrt11:44:571
1881899391cyclictest20849-21df_abs09:29:491
1881899391cyclictest15797-21diskmemload10:12:301
121750390irq/30-eth0_g0_1219-21kworker/1:209:28:371
121650390irq/29-eth0_g0_5544-21unixbench_singl08:25:020
121650390irq/29-eth0_g0_31ksoftirqd/011:30:020
121650390irq/29-eth0_g0_24765-21missed_timers09:44:550
121650390irq/29-eth0_g0_20673-21wc07:15:010
121650390irq/29-eth0_g0_13-21kworker/0:112:15:020
121650390irq/29-eth0_g0_13-21kworker/0:110:44:380
121650390irq/29-eth0_g0_13-21kworker/0:109:41:210
121650390irq/29-eth0_g0_13-21kworker/0:109:32:580
121650390irq/29-eth0_g0_121ksoftirqd/112:05:320
121390ksoftirqd/1121750irq/30-eth0_g0_12:00:550
121390ksoftirqd/1121750irq/30-eth0_g0_11:53:250
121390ksoftirqd/1121750irq/30-eth0_g0_11:28:230
121390ksoftirqd/1121750irq/30-eth0_g0_10:10:050
121390ksoftirqd/1121750irq/30-eth0_g0_09:52:550
121390ksoftirqd/1121750irq/30-eth0_g0_09:09:420
121390ksoftirqd/1121750irq/30-eth0_g0_08:38:120
121390ksoftirqd/1121750irq/30-eth0_g0_07:27:160
121390ksoftirqd/1121650irq/29-eth0_g0_10:22:471
121390ksoftirqd/1121650irq/29-eth0_g0_09:19:591
18818993823cyclictest6625-21/usr/sbin/munin08:30:031
1881899382cyclictest16536-21unixbench_multi09:10:041
1881899381cyclictest191372sleep107:09:541
121750380irq/30-eth0_g0_29164-21ntp_states12:14:571
121750380irq/30-eth0_g0_18815-21munin-run07:09:391
121750380irq/30-eth0_g0_1219-21kworker/1:212:04:241
121750380irq/30-eth0_g0_1219-21kworker/1:211:32:081
121750380irq/30-eth0_g0_121ksoftirqd/110:09:111
121750380irq/30-eth0_g0_0-21swapper/109:56:401
121650380irq/29-eth0_g0_27804-21missed_timers07:44:570
121650380irq/29-eth0_g0_13-21kworker/0:110:59:550
121650380irq/29-eth0_g0_13-21kworker/0:109:58:050
121650380irq/29-eth0_g0_121ksoftirqd/111:15:210
121380ksoftirqd/1121750irq/30-eth0_g0_11:22:530
121380ksoftirqd/1121750irq/30-eth0_g0_10:59:300
1881899371cyclictest9185-21grep08:40:021
1881899371cyclictest562-21unixbench_multi08:05:021
1881899371cyclictest29227-21awk07:49:591
1881899371cyclictest208112sleep107:15:031
1881899371cyclictest15344-21head09:05:021
1881899371cyclictest12218-21egrep08:54:511
121750370irq/30-eth0_g0_1219-21kworker/1:211:11:041
121750370irq/30-eth0_g0_121ksoftirqd/109:17:031
121650370irq/29-eth0_g0_1964-21runrttasks08:52:430
121650370irq/29-eth0_g0_13-21kworker/0:111:42:110
121650370irq/29-eth0_g0_13-21kworker/0:110:07:300
121650370irq/29-eth0_g0_10288-21/usr/sbin/munin08:44:590
1881899362cyclictest30489-21sendmail_mailtr07:55:001
1881899362cyclictest276092sleep107:44:531
1881899362cyclictest22280-21sshd07:22:141
1881899361cyclictest6032-21cat08:29:411
1881899361cyclictest4807-21latency_hist08:24:411
1881899361cyclictest23025-21proc_pri07:24:591
1881899361cyclictest17032sleep108:09:581
1881899361cyclictest11739-21chrt08:50:141
121750360irq/30-eth0_g0_7375-21sed10:45:021
121750360irq/30-eth0_g0_15797-21diskmemload09:34:571
121750360irq/30-eth0_g0_121ksoftirqd/110:55:301
121650360irq/29-eth0_g0_3715-21grep08:19:520
121650360irq/29-eth0_g0_26318-21df07:39:520
121650360irq/29-eth0_g0_26318-21df07:39:520
121360ksoftirqd/1132412sleep008:58:300
121360ksoftirqd/1121750irq/30-eth0_g0_07:38:190
121360ksoftirqd/1121750irq/30-eth0_g0_07:33:580
121360ksoftirqd/1121650irq/29-eth0_g0_07:29:541
1881899351cyclictest2882-21grep08:14:591
1881899351cyclictest14040-21sort09:00:001
121650350irq/29-eth0_g0_8945-21sh08:39:580
121650350irq/29-eth0_g0_32712-21ls08:04:570
121650350irq/29-eth0_g0_1964-21runrttasks07:14:390
121650350irq/29-eth0_g0_1859-21unixbench_singl08:10:000
1881899341cyclictest26927-21unixbench_singl07:40:031
1881899341cyclictest26927-21unixbench_singl07:40:031
121650340irq/29-eth0_g0_31625-21proc_pri08:00:000
121650340irq/29-eth0_g0_0-21swapper/008:59:540
121750330irq/30-eth0_g0_1964-21runrttasks07:19:490
121650330irq/29-eth0_g0_1964-21runrttasks08:30:270
121650320irq/29-eth0_g0_1964-21runrttasks07:52:530
121320ksoftirqd/125267-21iostat07:34:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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