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2026-05-26 - 20:24

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Tue May 26, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211010ksoftirqd/1121750irq/30-eth0_g0_11:42:101
135832970sleep0121650irq/29-eth0_g0_07:40:130
301372800sleep1121750irq/30-eth0_g0_11:00:141
37952780sleep1121750irq/30-eth0_g0_11:25:121
37952780sleep1121750irq/30-eth0_g0_11:25:121
121740ksoftirqd/1121750irq/30-eth0_g0_09:00:291
121700ksoftirqd/1121650irq/29-eth0_g0_12:39:511
133122670sleep1121750irq/30-eth0_g0_09:53:061
121660ksoftirqd/1121750irq/30-eth0_g0_09:43:571
121660ksoftirqd/1121750irq/30-eth0_g0_09:43:571
248302550sleep1121650irq/29-eth0_g0_10:40:071
121540ksoftirqd/1121750irq/30-eth0_g0_11:51:401
218742530sleep1121650irq/29-eth0_g0_10:27:541
133672530sleep0121650irq/29-eth0_g0_09:53:440
121490ksoftirqd/1121750irq/30-eth0_g0_09:10:460
121750480irq/30-eth0_g0_1219-21kworker/1:212:32:281
121470ksoftirqd/15445-21munin-run07:09:521
177022460sleep1121750irq/30-eth0_g0_07:59:521
121650460irq/29-eth0_g0_13-21kworker/0:110:30:100
17912450sleep0121650irq/29-eth0_g0_11:19:040
121650450irq/29-eth0_g0_1964-21runrttasks10:40:570
121450ksoftirqd/1121650irq/29-eth0_g0_12:17:031
121450ksoftirqd/1121650irq/29-eth0_g0_09:41:150
121450ksoftirqd/1121650irq/29-eth0_g0_09:41:150
121440ksoftirqd/1121750irq/30-eth0_g0_11:30:070
121440ksoftirqd/1121750irq/30-eth0_g0_11:30:070
121440ksoftirqd/1121750irq/30-eth0_g0_10:16:381
121440ksoftirqd/1121650irq/29-eth0_g0_11:45:341
121440ksoftirqd/1121650irq/29-eth0_g0_08:05:421
121750430irq/30-eth0_g0_1964-21runrttasks08:55:021
121430ksoftirqd/1121750irq/30-eth0_g0_12:16:120
121430ksoftirqd/1121650irq/29-eth0_g0_11:55:151
121430ksoftirqd/1121650irq/29-eth0_g0_11:49:220
121430ksoftirqd/1121650irq/29-eth0_g0_11:01:350
5451994229cyclictest1964-21runrttasks07:32:051
121750420irq/30-eth0_g0_292712sleep110:58:281
121750420irq/30-eth0_g0_121ksoftirqd/112:03:571
121650420irq/29-eth0_g0_4552-21cat07:05:070
121420ksoftirqd/1121750irq/30-eth0_g0_12:31:260
121420ksoftirqd/1121650irq/29-eth0_g0_10:50:140
121420ksoftirqd/1121650irq/29-eth0_g0_09:21:140
121750410irq/30-eth0_g0_31ksoftirqd/009:39:250
121750410irq/30-eth0_g0_1219-21kworker/1:210:51:301
121750410irq/30-eth0_g0_121ksoftirqd/112:29:361
121750410irq/30-eth0_g0_121ksoftirqd/112:29:361
121750410irq/30-eth0_g0_121ksoftirqd/110:05:011
121650410irq/29-eth0_g0_13-21kworker/0:109:31:180
121650410irq/29-eth0_g0_13-21kworker/0:109:25:010
121410ksoftirqd/1121750irq/30-eth0_g0_12:36:400
41250400irq/22-fsldma-c31ksoftirqd/011:35:140
129352400sleep0121650irq/29-eth0_g0_12:04:520
121750400irq/30-eth0_g0_1219-21kworker/1:211:35:141
121750400irq/30-eth0_g0_1219-21kworker/1:211:14:471
121750400irq/30-eth0_g0_121ksoftirqd/110:31:491
121750400irq/30-eth0_g0_121ksoftirqd/109:46:181
121650400irq/29-eth0_g0_31ksoftirqd/012:13:100
121650400irq/29-eth0_g0_13-21kworker/0:111:55:010
121650400irq/29-eth0_g0_13-21kworker/0:111:40:080
121650400irq/29-eth0_g0_13-21kworker/0:111:23:310
121650400irq/29-eth0_g0_121ksoftirqd/109:25:041
121400ksoftirqd/1121750irq/30-eth0_g0_12:07:000
121400ksoftirqd/1121750irq/30-eth0_g0_08:45:320
121400ksoftirqd/1121750irq/30-eth0_g0_07:11:230
121400ksoftirqd/1121650irq/29-eth0_g0_11:20:041
121400ksoftirqd/1121650irq/29-eth0_g0_10:45:591
545199392cyclictest2679-21df_abs09:10:041
545199391cyclictest8984-21cat09:35:071
121750390irq/30-eth0_g0_1219-21kworker/1:211:34:171
121750390irq/30-eth0_g0_1219-21kworker/1:211:34:171
121750390irq/30-eth0_g0_1219-21kworker/1:209:15:031
121750390irq/30-eth0_g0_121ksoftirqd/110:39:171
121750390irq/30-eth0_g0_121ksoftirqd/110:39:171
121750390irq/30-eth0_g0_121ksoftirqd/109:33:321
121650390irq/29-eth0_g0_31ksoftirqd/012:25:380
121650390irq/29-eth0_g0_31ksoftirqd/012:25:380
121650390irq/29-eth0_g0_31ksoftirqd/010:45:140
121650390irq/29-eth0_g0_13-21kworker/0:112:22:580
121650390irq/29-eth0_g0_13-21kworker/0:110:17:280
121650390irq/29-eth0_g0_121ksoftirqd/109:47:060
121390ksoftirqd/115254-21runrttasks12:13:431
121390ksoftirqd/1121750irq/30-eth0_g0_10:22:430
121390ksoftirqd/1121750irq/30-eth0_g0_09:55:040
121390ksoftirqd/1121750irq/30-eth0_g0_09:04:450
121390ksoftirqd/1121750irq/30-eth0_g0_08:13:390
121390ksoftirqd/1121650irq/29-eth0_g0_11:04:551
545199382cyclictest23405-21sed08:20:111
545199381cyclictest15343-21awk10:00:131
121750380irq/30-eth0_g0_1219-21kworker/1:212:19:551
121750380irq/30-eth0_g0_1219-21kworker/1:210:10:231
121650380irq/29-eth0_g0_9572-21cat11:50:070
121650380irq/29-eth0_g0_30731-21unixbench_singl08:50:130
121650380irq/29-eth0_g0_30731-21unixbench_singl08:50:130
121650380irq/29-eth0_g0_28803-21/usr/sbin/munin10:55:100
121650380irq/29-eth0_g0_26934-21sendmail_mailtr08:35:130
121650380irq/29-eth0_g0_1964-21runrttasks10:01:340
121650380irq/29-eth0_g0_17692-21proc_pri10:10:100
121650380irq/29-eth0_g0_13-21kworker/0:111:11:310
121650380irq/29-eth0_g0_13-21kworker/0:111:06:110
121650380irq/29-eth0_g0_13-21kworker/0:110:35:030
121650380irq/29-eth0_g0_13-21kworker/0:110:35:030
121650380irq/29-eth0_g0_13-21kworker/0:109:17:330
121380ksoftirqd/1121750irq/30-eth0_g0_10:06:070
121380ksoftirqd/1121650irq/29-eth0_g0_10:23:121
117450380irq/72-mmc0121ksoftirqd/108:45:231
545199377cyclictest0-21swapper/109:57:321
545199372cyclictest8546-21/usr/sbin/munin07:20:131
545199371cyclictest2488-21latency_hist09:09:521
545199371cyclictest2443-21diskmemload09:20:131
545199371cyclictest204902sleep108:10:081
545199371cyclictest1964-21runrttasks07:24:531
545199371cyclictest0-21swapper/108:39:411
121750370irq/30-eth0_g0_121ksoftirqd/112:08:101
121750370irq/30-eth0_g0_121ksoftirqd/111:17:271
121650370irq/29-eth0_g0_28766-21latency_hist08:44:530
121650370irq/29-eth0_g0_19726-21unixbench_singl08:05:170
121650370irq/29-eth0_g0_13-21kworker/0:111:25:490
121650370irq/29-eth0_g0_13-21kworker/0:111:25:490
121650370irq/29-eth0_g0_13-21kworker/0:110:25:250
121650370irq/29-eth0_g0_12250-21cat07:35:120
545199362cyclictest5779-21irqstats07:10:061
545199361cyclictest25519-21netstat08:30:071
545199361cyclictest1964-21runrttasks07:52:351
545199361cyclictest18101-21sort08:00:071
121750360irq/30-eth0_g0_7298-21sendmail_mailqu07:15:111
121650360irq/29-eth0_g0_25467-21cat08:30:060
121360ksoftirqd/1121750irq/30-eth0_g0_07:29:470
545199351cyclictest28270-21unixbench_singl08:40:131
545199351cyclictest22134-21grep08:15:121
121650350irq/29-eth0_g0_22929-21iostat08:20:040
121650350irq/29-eth0_g0_1964-21runrttasks07:41:511
121350ksoftirqd/114724-21grep07:45:141
545199342cyclictest1964-21runrttasks08:50:131
545199342cyclictest1964-21runrttasks08:50:131
121750340irq/30-eth0_g0_23927-21/usr/sbin/munin08:25:061
121650340irq/29-eth0_g0_7995-21/usr/sbin/munin07:20:050
121650340irq/29-eth0_g0_24057-21df08:25:050
121650340irq/29-eth0_g0_0-21swapper/009:05:090
121650340irq/29-eth0_g0_0-21swapper/007:55:030
121340ksoftirqd/1121750irq/30-eth0_g0_08:04:520
545199331cyclictest12073-21/usr/sbin/munin07:35:091
121650330irq/29-eth0_g0_6982-21/usr/sbin/munin07:15:050
121650330irq/29-eth0_g0_545099cyclictest07:50:130
121650330irq/29-eth0_g0_22048-21swap08:15:110
121650330irq/29-eth0_g0_14122-21/usr/sbin/munin07:45:140
121650330irq/29-eth0_g0_10433-21runrttasks07:29:540
121650320irq/29-eth0_g0_0-21swapper/008:55:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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