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2026-07-14 - 03:07

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 Jul 14, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1279521360sleep0121650irq/29-eth0_g0_22:37:150
54492620sleep1121750irq/30-eth0_g0_22:07:271
247332560sleep0121750irq/30-eth0_g0_21:13:120
314132550sleep1121750irq/30-eth0_g0_23:53:081
121520ksoftirqd/1121650irq/29-eth0_g0_21:35:160
177412500sleep0121750irq/30-eth0_g0_22:57:440
49582490sleep0121650irq/29-eth0_g0_00:17:430
121490ksoftirqd/1121750irq/30-eth0_g0_22:13:070
121490ksoftirqd/1121750irq/30-eth0_g0_22:13:070
121480ksoftirqd/1121650irq/29-eth0_g0_23:01:310
121480ksoftirqd/1121650irq/29-eth0_g0_20:51:080
121480ksoftirqd/1121650irq/29-eth0_g0_20:51:080
121470ksoftirqd/1121750irq/30-eth0_g0_23:02:171
121750460irq/30-eth0_g0_19604-21/usr/sbin/munin23:03:151
121650460irq/29-eth0_g0_25532-21chrt19:03:160
121460ksoftirqd/1121750irq/30-eth0_g0_00:04:481
121460ksoftirqd/1121650irq/29-eth0_g0_20:26:301
121460ksoftirqd/1121650irq/29-eth0_g0_19:32:051
121460ksoftirqd/1121650irq/29-eth0_g0_19:32:051
121450ksoftirqd/1121750irq/30-eth0_g0_23:38:001
121450ksoftirqd/1121750irq/30-eth0_g0_21:25:211
121450ksoftirqd/1121650irq/29-eth0_g0_00:33:201
121450ksoftirqd/1121650irq/29-eth0_g0_00:31:080
3462440sleep1121650irq/29-eth0_g0_21:45:471
121440ksoftirqd/1121750irq/30-eth0_g0_22:26:190
121440ksoftirqd/1121750irq/30-eth0_g0_22:20:461
121440ksoftirqd/1121750irq/30-eth0_g0_00:19:231
121440ksoftirqd/1121650irq/29-eth0_g0_23:35:421
121750430irq/30-eth0_g0_9252sleep123:59:061
121750430irq/30-eth0_g0_1219-21kworker/1:223:31:081
121650430irq/29-eth0_g0_13-21kworker/0:123:58:100
121650430irq/29-eth0_g0_13-21kworker/0:122:21:420
121650430irq/29-eth0_g0_13-21kworker/0:121:32:470
121430ksoftirqd/1121750irq/30-eth0_g0_22:45:351
121430ksoftirqd/1121750irq/30-eth0_g0_22:01:091
121420ksoftirqd/1121750irq/30-eth0_g0_22:10:580
121420ksoftirqd/1121750irq/30-eth0_g0_00:07:560
121750410irq/30-eth0_g0_14094-21unixbench_multi20:28:191
121750410irq/30-eth0_g0_0-21swapper/120:03:101
121650410irq/29-eth0_g0_13-21kworker/0:122:44:220
121650410irq/29-eth0_g0_13-21kworker/0:122:03:080
121650410irq/29-eth0_g0_13-21kworker/0:121:18:040
121410ksoftirqd/1121750irq/30-eth0_g0_22:23:111
2614799401cyclictest21454-21grep20:58:181
2614799401cyclictest21454-21grep20:58:181
2614799401cyclictest13213-21grep22:38:101
121750400irq/30-eth0_g0_121ksoftirqd/121:38:431
121650400irq/29-eth0_g0_31ksoftirqd/022:32:360
121650400irq/29-eth0_g0_31ksoftirqd/020:41:090
121650400irq/29-eth0_g0_13-21kworker/0:122:38:100
121650400irq/29-eth0_g0_13-21kworker/0:121:48:320
121650400irq/29-eth0_g0_121ksoftirqd/100:33:140
121400ksoftirqd/1121650irq/29-eth0_g0_22:52:350
2614799392cyclictest18425-21df20:48:081
2614799392cyclictest18425-21df20:48:081
2614799391cyclictest5653-21df_abs22:08:071
2614799391cyclictest111572sleep120:18:081
121750390irq/30-eth0_g0_28655-21date19:17:561
121750390irq/30-eth0_g0_1219-21kworker/1:223:45:171
121750390irq/30-eth0_g0_1219-21kworker/1:222:51:041
121750390irq/30-eth0_g0_1219-21kworker/1:222:16:031
121750390irq/30-eth0_g0_1219-21kworker/1:222:16:031
121750390irq/30-eth0_g0_1219-21kworker/1:221:19:041
121750390irq/30-eth0_g0_1219-21kworker/1:200:27:301
121750390irq/30-eth0_g0_121ksoftirqd/121:08:191
121750390irq/30-eth0_g0_121ksoftirqd/100:28:451
121650390irq/29-eth0_g0_32533-21sshd19:33:090
121650390irq/29-eth0_g0_31ksoftirqd/021:25:430
121650390irq/29-eth0_g0_13-21kworker/0:123:09:360
121650390irq/29-eth0_g0_13-21kworker/0:123:03:130
121650390irq/29-eth0_g0_13-21kworker/0:122:00:490
121650390irq/29-eth0_g0_13-21kworker/0:121:55:230
121650390irq/29-eth0_g0_13-21kworker/0:100:08:430
121650390irq/29-eth0_g0_121ksoftirqd/100:13:411
121650390irq/29-eth0_g0_0-21swapper/000:18:110
121390ksoftirqd/1121650irq/29-eth0_g0_23:14:300
121390ksoftirqd/1121650irq/29-eth0_g0_21:34:271
2614799388cyclictest0-21swapper/121:13:271
2614799387cyclictest121750irq/30-eth0_g0_23:23:311
2614799382cyclictest4318-21grep19:48:191
2614799381cyclictest26477-21chrt19:08:091
2614799381cyclictest0-21swapper/120:12:571
121750380irq/30-eth0_g0_1219-21kworker/1:222:53:061
121750380irq/30-eth0_g0_121ksoftirqd/123:52:521
121650380irq/29-eth0_g0_31ksoftirqd/020:09:090
121650380irq/29-eth0_g0_1964-21runrttasks23:57:560
121650380irq/29-eth0_g0_1964-21runrttasks21:52:131
121650380irq/29-eth0_g0_1964-21runrttasks21:02:510
121650380irq/29-eth0_g0_1964-21runrttasks21:02:510
121650380irq/29-eth0_g0_13-21kworker/0:123:48:240
121650380irq/29-eth0_g0_13-21kworker/0:123:44:160
121650380irq/29-eth0_g0_13-21kworker/0:123:22:040
2614799372cyclictest9098-21sendmail_mailst20:08:161
2614799372cyclictest5103-21iostat19:53:121
2614799372cyclictest1703-21gzip19:38:161
2614799371cyclictest2644-21taskset21:53:211
2614799371cyclictest125192sleep122:34:051
121750370irq/30-eth0_g0_25466-21wc19:03:151
121750370irq/30-eth0_g0_1219-21kworker/1:223:17:231
121750370irq/30-eth0_g0_1219-21kworker/1:223:09:591
121750370irq/30-eth0_g0_0-21swapper/122:29:211
121650370irq/29-eth0_g0_9775-21/usr/sbin/munin20:13:130
121650370irq/29-eth0_g0_29077-21taskset19:18:130
121650370irq/29-eth0_g0_2381-21latency_hist19:42:560
121650370irq/29-eth0_g0_1964-21runrttasks23:33:530
121650370irq/29-eth0_g0_1964-21runrttasks20:44:040
121650370irq/29-eth0_g0_1964-21runrttasks20:23:030
121650370irq/29-eth0_g0_1964-21runrttasks19:29:250
121650370irq/29-eth0_g0_1964-21runrttasks19:29:250
121650370irq/29-eth0_g0_13-21kworker/0:123:31:590
121650370irq/29-eth0_g0_13-21kworker/0:121:47:340
121650370irq/29-eth0_g0_13-21kworker/0:121:09:370
121650370irq/29-eth0_g0_13-21kworker/0:100:23:320
121650370irq/29-eth0_g0_0-21swapper/023:41:130
2614799361cyclictest29246-21awk19:18:161
2614799361cyclictest23180-21diskmemload21:28:091
2614799361cyclictest0-21swapper/119:37:461
121750360irq/30-eth0_g0_1219-21kworker/1:223:19:101
121750360irq/30-eth0_g0_1219-21kworker/1:200:10:401
121650360irq/29-eth0_g0_6621-21rt-features19:58:160
121650360irq/29-eth0_g0_4940-21sed19:53:090
121650360irq/29-eth0_g0_30147-21interrupts19:23:100
121650360irq/29-eth0_g0_26564-21wc19:08:100
121650360irq/29-eth0_g0_1964-21runrttasks21:06:310
121650360irq/29-eth0_g0_1964-21runrttasks20:18:440
121650360irq/29-eth0_g0_1964-21runrttasks19:47:101
121650360irq/29-eth0_g0_14003-21sendmail_mailst20:28:180
121650360irq/29-eth0_g0_13-21kworker/0:121:42:460
121650360irq/29-eth0_g0_0-21swapper/023:26:400
121650360irq/29-eth0_g0_0-21swapper/019:45:540
2614799351cyclictest19822-21iostat20:53:101
2614799351cyclictest19822-21iostat20:53:101
121650350irq/29-eth0_g0_7555-21chrt20:03:120
121650350irq/29-eth0_g0_1964-21runrttasks19:13:160
121350ksoftirqd/115237-21mailstats20:33:151
2614799342cyclictest0-21swapper/120:45:091
2614799341cyclictest16596-21unixbench_singl20:38:181
121750340irq/30-eth0_g0_29923-21/usr/sbin/munin19:23:161
121650340irq/29-eth0_g0_0-21swapper/019:48:180
2614799331cyclictest6396-21wc19:58:121
2614799331cyclictest22581-21wc21:03:161
121650330irq/29-eth0_g0_15018-21runrttasks20:33:100
799320migration/019842-21latency20:53:100
799320migration/019842-21latency20:53:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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