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2026-08-23 - 12:37

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 Sun Aug 23, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
809421380sleep1121650irq/29-eth0_g0_00:17:011
1852321190sleep0121750irq/30-eth0_g0_22:47:380
121910ksoftirqd/1121650irq/29-eth0_g0_21:12:280
23212870chrt121650irq/29-eth0_g0_23:56:061
140382750sleep0121750irq/30-eth0_g0_22:31:300
121720ksoftirqd/1121750irq/30-eth0_g0_23:56:301
121720ksoftirqd/1121750irq/30-eth0_g0_23:56:301
152802680sleep0121750irq/30-eth0_g0_20:21:420
282552640sleep0121750irq/30-eth0_g0_23:26:560
162312610sleep1121750irq/30-eth0_g0_22:39:251
28572600sleep1121750irq/30-eth0_g0_21:45:221
76912540sleep1121750irq/30-eth0_g0_22:04:411
322602530sleep0121750irq/30-eth0_g0_21:31:410
295402500chrt121750irq/30-eth0_g0_21:21:321
256742480sleep0121750irq/30-eth0_g0_23:16:420
121650470irq/29-eth0_g0_13-21kworker/0:100:31:340
121470ksoftirqd/1121650irq/29-eth0_g0_19:09:031
121460ksoftirqd/128093-21grep19:01:411
121460ksoftirqd/1121750irq/30-eth0_g0_21:28:531
121460ksoftirqd/1121750irq/30-eth0_g0_21:28:531
121460ksoftirqd/1121650irq/29-eth0_g0_19:18:301
121450ksoftirqd/1121750irq/30-eth0_g0_21:40:431
121450ksoftirqd/1121650irq/29-eth0_g0_21:36:460
121650440irq/29-eth0_g0_121ksoftirqd/120:11:390
121440ksoftirqd/1121650irq/29-eth0_g0_23:08:341
121750430irq/30-eth0_g0_1219-21kworker/1:222:51:511
121650430irq/29-eth0_g0_28149-21unixbench_singl19:01:410
121430ksoftirqd/1121750irq/30-eth0_g0_23:38:460
121430ksoftirqd/1121750irq/30-eth0_g0_21:33:191
121750420irq/30-eth0_g0_1219-21kworker/1:222:11:401
121750420irq/30-eth0_g0_1219-21kworker/1:200:33:381
121750420irq/30-eth0_g0_121ksoftirqd/100:21:371
121420ksoftirqd/1121750irq/30-eth0_g0_00:12:470
121420ksoftirqd/1121650irq/29-eth0_g0_21:11:361
121750410irq/30-eth0_g0_121ksoftirqd/123:48:301
121650410irq/29-eth0_g0_194842sleep022:51:410
121650410irq/29-eth0_g0_13-21kworker/0:123:57:200
121650410irq/29-eth0_g0_13-21kworker/0:123:57:200
121650410irq/29-eth0_g0_13-21kworker/0:121:06:370
121650410irq/29-eth0_g0_121ksoftirqd/122:06:040
121410ksoftirqd/1121650irq/29-eth0_g0_23:26:381
2859899401cyclictest12762-21cat22:26:211
249092400sleep1121750irq/30-eth0_g0_23:15:501
249092400sleep1121750irq/30-eth0_g0_23:15:501
249082400sleep0121650irq/29-eth0_g0_23:15:490
249082400sleep0121650irq/29-eth0_g0_23:15:490
121750400irq/30-eth0_g0_1219-21kworker/1:222:28:341
121750400irq/30-eth0_g0_121ksoftirqd/122:00:521
121650400irq/29-eth0_g0_93492sleep000:22:230
121650400irq/29-eth0_g0_5545-21df_abs21:56:310
121650400irq/29-eth0_g0_13-21kworker/0:123:46:440
121650400irq/29-eth0_g0_13-21kworker/0:123:10:090
121650400irq/29-eth0_g0_13-21kworker/0:100:28:230
121650400irq/29-eth0_g0_13-21kworker/0:100:04:060
121400ksoftirqd/1121750irq/30-eth0_g0_23:51:220
121400ksoftirqd/1121750irq/30-eth0_g0_22:36:490
121400ksoftirqd/1121750irq/30-eth0_g0_22:29:250
121400ksoftirqd/1121650irq/29-eth0_g0_21:10:331
121400ksoftirqd/1121650irq/29-eth0_g0_00:08:201
2859899392cyclictest4963-21unixbench_singl21:51:421
2859899391cyclictest10433-21grep00:26:421
2859899391cyclictest10161-21open_inodes20:01:391
121750390irq/30-eth0_g0_31ksoftirqd/023:23:380
121750390irq/30-eth0_g0_1219-21kworker/1:223:31:321
121750390irq/30-eth0_g0_1219-21kworker/1:222:18:441
121750390irq/30-eth0_g0_121ksoftirqd/122:32:111
121650390irq/29-eth0_g0_31ksoftirqd/023:41:390
121650390irq/29-eth0_g0_31ksoftirqd/023:41:390
121650390irq/29-eth0_g0_31ksoftirqd/021:41:340
121650390irq/29-eth0_g0_13-21kworker/0:122:24:450
121650390irq/29-eth0_g0_13-21kworker/0:122:18:170
121650390irq/29-eth0_g0_13-21kworker/0:122:14:420
121650390irq/29-eth0_g0_13-21kworker/0:122:09:590
121650390irq/29-eth0_g0_13-21kworker/0:121:26:520
121650390irq/29-eth0_g0_13-21kworker/0:121:26:520
121390ksoftirqd/11334-21if_err_eth019:26:331
121390ksoftirqd/1121750irq/30-eth0_g0_23:36:130
121390ksoftirqd/1121750irq/30-eth0_g0_23:02:160
121390ksoftirqd/1121750irq/30-eth0_g0_22:58:020
121390ksoftirqd/1121750irq/30-eth0_g0_21:52:330
121390ksoftirqd/1121750irq/30-eth0_g0_21:18:390
121390ksoftirqd/1121750irq/30-eth0_g0_20:06:311
121390ksoftirqd/1121750irq/30-eth0_g0_19:19:340
121390ksoftirqd/1121750irq/30-eth0_g0_19:13:070
121390ksoftirqd/1121750irq/30-eth0_g0_19:10:290
121390ksoftirqd/1121650irq/29-eth0_g0_22:41:411
2859899381cyclictest6523-21proc_pri19:46:391
2859899381cyclictest3671-21unixbench_multi21:46:411
121750380irq/30-eth0_g0_28499-21ntp_states21:16:391
121750380irq/30-eth0_g0_1219-21kworker/1:223:45:151
121750380irq/30-eth0_g0_1219-21kworker/1:223:45:151
121750380irq/30-eth0_g0_121ksoftirqd/123:25:051
121750380irq/30-eth0_g0_121ksoftirqd/123:03:341
121750380irq/30-eth0_g0_121ksoftirqd/122:06:371
121750380irq/30-eth0_g0_121ksoftirqd/100:04:271
121650380irq/29-eth0_g0_31ksoftirqd/000:16:320
121650380irq/29-eth0_g0_31ksoftirqd/000:06:350
121650380irq/29-eth0_g0_25054-21unixbench_multi21:01:420
121650380irq/29-eth0_g0_25054-21unixbench_multi21:01:420
121650380irq/29-eth0_g0_1964-21runrttasks20:08:020
121650380irq/29-eth0_g0_1964-21runrttasks19:38:400
121650380irq/29-eth0_g0_18773-21seq20:36:410
121650380irq/29-eth0_g0_13-21kworker/0:121:47:020
121650380irq/29-eth0_g0_121ksoftirqd/121:02:061
121650380irq/29-eth0_g0_121ksoftirqd/121:02:061
121650380irq/29-eth0_g0_121ksoftirqd/120:41:421
121380ksoftirqd/1121750irq/30-eth0_g0_22:41:440
121380ksoftirqd/1121750irq/30-eth0_g0_21:22:550
121380ksoftirqd/1121750irq/30-eth0_g0_20:05:380
121380ksoftirqd/1121650irq/29-eth0_g0_23:37:361
2859899372cyclictest2852-21proc_pri19:31:401
2859899371cyclictest305762sleep119:11:421
2859899371cyclictest21595-21sshd20:47:571
2859899371cyclictest0-21swapper/120:52:161
121750370irq/30-eth0_g0_17144-21cpu20:31:311
121750370irq/30-eth0_g0_17144-21cpu20:31:311
121750370irq/30-eth0_g0_1219-21kworker/1:223:18:011
121750370irq/30-eth0_g0_0-21swapper/122:57:511
121650370irq/29-eth0_g0_5508-21grep19:41:410
121650370irq/29-eth0_g0_1964-21runrttasks20:34:160
121650370irq/29-eth0_g0_1964-21runrttasks20:34:160
121370ksoftirqd/1121750irq/30-eth0_g0_19:56:380
121370ksoftirqd/1121650irq/29-eth0_g0_20:58:091
121370ksoftirqd/1121650irq/29-eth0_g0_20:15:051
2859899362cyclictest2109-21lldpd19:38:581
2859899362cyclictest185032sleep120:36:351
2859899362cyclictest0-21swapper/120:26:361
121750360irq/30-eth0_g0_1219-21kworker/1:222:50:081
121750360irq/30-eth0_g0_1219-21kworker/1:200:14:501
121650360irq/29-eth0_g0_22375-21grep20:51:380
121650360irq/29-eth0_g0_21284-21sendmail_mailqu20:46:390
121650360irq/29-eth0_g0_1964-21runrttasks19:33:130
121650360irq/29-eth0_g0_0-21swapper/020:16:330
2859899352cyclictest8424-21munin-run19:56:201
2859899351cyclictest5497-21unixbench_multi19:41:411
2859899351cyclictest13704-21taskset20:16:341
121650350irq/29-eth0_g0_7478-21if_eth019:51:320
121650350irq/29-eth0_g0_2109-21lldpd20:56:370
121650350irq/29-eth0_g0_1677-21sendmail_mailqu19:26:400
121650350irq/29-eth0_g0_16499-21unixbench_multi20:26:400
121350ksoftirqd/1121750irq/30-eth0_g0_19:51:020
2859899341cyclictest345-21proc_pri19:21:391
2859899341cyclictest0-21swapper/120:21:351
121650340irq/29-eth0_g0_32420-21df_abs19:21:320
28598993318cyclictest8781-21latency19:56:351
121650320irq/29-eth0_g0_19912-21/usr/sbin/munin20:41:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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