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2026-06-12 - 03:40

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 highest latencies:
System rack3slot5s.osadl.org (updated Fri Jun 12, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
356021150sleep0121650irq/29-eth0_g0_22:26:510
356021150sleep0121650irq/29-eth0_g0_22:26:510
1211110ksoftirqd/1121750irq/30-eth0_g0_22:29:321
2194521070sleep1121650irq/29-eth0_g0_23:42:011
121840ksoftirqd/1121650irq/29-eth0_g0_21:39:250
99902830sleep0121750irq/30-eth0_g0_20:39:340
175082800sleep1121650irq/29-eth0_g0_21:10:211
121780ksoftirqd/1121750irq/30-eth0_g0_22:59:131
121710ksoftirqd/1121750irq/30-eth0_g0_19:44:171
283072640sleep1121750irq/30-eth0_g0_21:54:341
319412600sleep1121750irq/30-eth0_g0_22:09:341
224162580sleep0121750irq/30-eth0_g0_21:30:310
110202560sleep0121750irq/30-eth0_g0_22:58:090
244272540sleep1121750irq/30-eth0_g0_23:52:271
121540ksoftirqd/1121750irq/30-eth0_g0_22:01:491
66232530chrt121650irq/29-eth0_g0_22:39:300
137742520chrt121750irq/30-eth0_g0_23:09:241
137742520chrt121750irq/30-eth0_g0_23:09:241
121520ksoftirqd/1121750irq/30-eth0_g0_20:29:111
247972510sleep1121750irq/30-eth0_g0_21:39:491
156542510sleep1121650irq/29-eth0_g0_23:15:091
121500ksoftirqd/1121750irq/30-eth0_g0_00:06:501
121500ksoftirqd/1121750irq/30-eth0_g0_00:06:501
121650490irq/29-eth0_g0_13-21kworker/0:121:14:380
121480ksoftirqd/1121750irq/30-eth0_g0_23:22:541
121480ksoftirqd/1121750irq/30-eth0_g0_00:14:421
121650470irq/29-eth0_g0_31ksoftirqd/023:23:070
121750460irq/30-eth0_g0_121ksoftirqd/123:54:361
121460ksoftirqd/1121650irq/29-eth0_g0_23:40:270
121450ksoftirqd/1121750irq/30-eth0_g0_23:04:270
121450ksoftirqd/1121750irq/30-eth0_g0_22:37:461
121650440irq/29-eth0_g0_1964-21runrttasks22:22:490
121440ksoftirqd/1121650irq/29-eth0_g0_21:20:431
121440ksoftirqd/1121650irq/29-eth0_g0_21:20:431
159752430sleep0121650irq/29-eth0_g0_23:18:530
121750430irq/30-eth0_g0_1219-21kworker/1:222:49:161
121750430irq/30-eth0_g0_1219-21kworker/1:200:19:511
121650430irq/29-eth0_g0_0-21swapper/019:09:140
121430ksoftirqd/1121750irq/30-eth0_g0_00:00:181
121430ksoftirqd/1121750irq/30-eth0_g0_00:00:181
121430ksoftirqd/1121650irq/29-eth0_g0_00:25:391
121750420irq/30-eth0_g0_1219-21kworker/1:223:33:531
121650420irq/29-eth0_g0_31ksoftirqd/023:24:260
121650420irq/29-eth0_g0_31ksoftirqd/021:34:250
121650420irq/29-eth0_g0_13-21kworker/0:123:12:490
121650420irq/29-eth0_g0_13-21kworker/0:123:12:490
121420ksoftirqd/1121650irq/29-eth0_g0_22:22:111
121750410irq/30-eth0_g0_1219-21kworker/1:200:36:291
121750410irq/30-eth0_g0_121ksoftirqd/123:00:181
121650410irq/29-eth0_g0_31ksoftirqd/023:31:590
121650410irq/29-eth0_g0_24167-21sshd19:24:340
121650410irq/29-eth0_g0_13-21kworker/0:121:59:340
321382400sleep0121750irq/30-eth0_g0_22:09:510
121750400irq/30-eth0_g0_1219-21kworker/1:221:48:181
121750400irq/30-eth0_g0_121ksoftirqd/123:25:241
121750400irq/30-eth0_g0_121ksoftirqd/121:30:341
121650400irq/29-eth0_g0_2109-21lldpd21:45:510
121650400irq/29-eth0_g0_1968299cyclictest22:50:450
121650400irq/29-eth0_g0_13-21kworker/0:122:38:090
121650400irq/29-eth0_g0_13-21kworker/0:122:17:520
121650400irq/29-eth0_g0_13-21kworker/0:121:20:230
121650400irq/29-eth0_g0_13-21kworker/0:121:20:230
121650400irq/29-eth0_g0_13-21kworker/0:100:34:220
121650400irq/29-eth0_g0_13-21kworker/0:100:11:580
121650400irq/29-eth0_g0_13-21kworker/0:100:00:270
121650400irq/29-eth0_g0_13-21kworker/0:100:00:270
121650400irq/29-eth0_g0_0-21swapper/020:14:360
121400ksoftirqd/1121650irq/29-eth0_g0_21:49:301
121750390irq/30-eth0_g0_31ksoftirqd/021:54:130
121750390irq/30-eth0_g0_1219-21kworker/1:223:08:411
121750390irq/30-eth0_g0_1219-21kworker/1:222:08:571
121750390irq/30-eth0_g0_1219-21kworker/1:221:15:031
121750390irq/30-eth0_g0_121ksoftirqd/121:35:361
121650390irq/29-eth0_g0_31ksoftirqd/021:56:080
121650390irq/29-eth0_g0_1969-21latency_hist00:34:130
121650390irq/29-eth0_g0_13-21kworker/0:123:55:450
121650390irq/29-eth0_g0_13-21kworker/0:122:46:120
121650390irq/29-eth0_g0_13-21kworker/0:100:18:170
121650390irq/29-eth0_g0_11593-21ntp_offset22:59:300
121390ksoftirqd/1121650irq/29-eth0_g0_20:51:031
1968399381cyclictest25339-21unixbench_singl19:29:351
1968399381cyclictest2109-21lldpd19:23:071
1968399381cyclictest13590-21sendmail_mailtr20:54:321
1968399381cyclictest11257-21unixbench_singl20:44:341
121750380irq/30-eth0_g0_21640-21unixbench_multi19:14:341
121750380irq/30-eth0_g0_19189-21unixbench_multi19:04:351
121750380irq/30-eth0_g0_1219-21kworker/1:200:09:581
121750380irq/30-eth0_g0_121ksoftirqd/122:27:261
121750380irq/30-eth0_g0_121ksoftirqd/122:27:261
121750380irq/30-eth0_g0_121ksoftirqd/100:29:151
121750380irq/30-eth0_g0_0-21swapper/122:39:251
121650380irq/29-eth0_g0_13-21kworker/0:123:49:300
121650380irq/29-eth0_g0_13-21kworker/0:122:31:520
121650380irq/29-eth0_g0_13-21kworker/0:100:07:590
121650380irq/29-eth0_g0_13-21kworker/0:100:07:590
121650380irq/29-eth0_g0_0-21swapper/023:44:290
121650380irq/29-eth0_g0_0-21swapper/020:44:240
121380ksoftirqd/1121650irq/29-eth0_g0_23:46:461
121380ksoftirqd/1121650irq/29-eth0_g0_20:41:071
121380ksoftirqd/1121650irq/29-eth0_g0_20:17:271
1968399371cyclictest7640-21taskset20:29:351
1968399371cyclictest14418-21entropy20:59:251
121750370irq/30-eth0_g0_1219-21kworker/1:223:38:231
121750370irq/30-eth0_g0_1219-21kworker/1:222:14:571
121750370irq/30-eth0_g0_0-21swapper/121:26:491
121650370irq/29-eth0_g0_9334-21latency_hist20:39:130
121650370irq/29-eth0_g0_9334-21latency_hist20:39:130
121650370irq/29-eth0_g0_6275-21timerandwakeup20:24:320
121650370irq/29-eth0_g0_28989-21unixbench_multi19:44:350
121650370irq/29-eth0_g0_1964-21runrttasks23:34:380
121650370irq/29-eth0_g0_1964-21runrttasks21:00:300
121650370irq/29-eth0_g0_1450-21unixbench_multi20:04:350
121650370irq/29-eth0_g0_13-21kworker/0:122:05:370
121650370irq/29-eth0_g0_13-21kworker/0:121:25:420
121650370irq/29-eth0_g0_13-21kworker/0:121:12:560
121650370irq/29-eth0_g0_13-21kworker/0:100:20:580
1968399362cyclictest16014-21fgrep21:04:301
1968399361cyclictest51902sleep120:19:351
1968399361cyclictest27498-21grep19:39:301
1968399361cyclictest23601-21/usr/sbin/munin19:24:251
1968399361cyclictest0-21swapper/119:59:341
121650360irq/29-eth0_g0_27772-21unixbench_singl19:39:340
121650360irq/29-eth0_g0_20479-21grep19:09:350
121650360irq/29-eth0_g0_15635-21df_inode21:04:230
121650360irq/29-eth0_g0_13107-21df_abs20:54:240
121650360irq/29-eth0_g0_13-21kworker/0:119:34:240
121650360irq/29-eth0_g0_0-21swapper/000:25:070
121360ksoftirqd/1121650irq/29-eth0_g0_20:12:371
1968399352cyclictest1390-21sort20:04:341
1968399351cyclictest20251-21processes19:09:311
121650350irq/29-eth0_g0_7837-21missed_timers22:44:301
121650350irq/29-eth0_g0_7054-21df_abs20:29:250
121650350irq/29-eth0_g0_2711-21unixbench_singl20:09:340
121650350irq/29-eth0_g0_25125-21proc_pri19:29:320
121650350irq/29-eth0_g0_22483-21latency19:19:280
121650350irq/29-eth0_g0_1964-21runrttasks19:59:370
121650350irq/29-eth0_g0_1964-21runrttasks19:15:140
121650350irq/29-eth0_g0_13005-21ls20:54:140
1968399341cyclictest8812-21grep20:34:341
1968399341cyclictest8812-21grep20:34:341
121650340irq/29-eth0_g0_5115-21unixbench_multi20:19:340
121650340irq/29-eth0_g0_30960-21if_err_eth019:54:260
121650340irq/29-eth0_g0_29855-21expr19:49:270
1968399330cyclictest0-21swapper/119:35:531
121750330irq/30-eth0_g0_31239-21proc_pri19:54:311
1968399321cyclictest0-21swapper/119:49:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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