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2026-07-18 - 03:26

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 Sat Jul 18, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2414721710sleep1121650irq/29-eth0_g0_22:38:271
121870ksoftirqd/1121750irq/30-eth0_g0_00:05:141
121700ksoftirqd/1121750irq/30-eth0_g0_23:56:261
121680ksoftirqd/1121750irq/30-eth0_g0_20:30:300
121680ksoftirqd/1121750irq/30-eth0_g0_20:30:300
66412670sleep0121650irq/29-eth0_g0_23:41:050
207652580sleep1121750irq/30-eth0_g0_20:13:061
207652580sleep1121750irq/30-eth0_g0_20:13:061
121540ksoftirqd/1121750irq/30-eth0_g0_23:43:020
121540ksoftirqd/1121750irq/30-eth0_g0_00:18:070
121540ksoftirqd/1121750irq/30-eth0_g0_00:18:070
121510ksoftirqd/1121750irq/30-eth0_g0_00:00:490
121490ksoftirqd/1121750irq/30-eth0_g0_22:11:451
121480ksoftirqd/1121750irq/30-eth0_g0_00:34:171
121750470irq/30-eth0_g0_316992sleep123:10:551
121470ksoftirqd/1121750irq/30-eth0_g0_22:48:030
205862460sleep0121650irq/29-eth0_g0_22:24:450
121460ksoftirqd/1121750irq/30-eth0_g0_21:56:491
121460ksoftirqd/1121750irq/30-eth0_g0_21:19:150
121460ksoftirqd/1121650irq/29-eth0_g0_22:19:031
121650450irq/29-eth0_g0_121ksoftirqd/121:37:060
121750440irq/30-eth0_g0_114162sleep123:59:461
121650440irq/29-eth0_g0_31ksoftirqd/020:13:040
121650440irq/29-eth0_g0_31ksoftirqd/020:13:040
121650440irq/29-eth0_g0_31ksoftirqd/019:03:000
121440ksoftirqd/1121750irq/30-eth0_g0_21:13:281
121750430irq/30-eth0_g0_31ksoftirqd/020:08:030
121650430irq/29-eth0_g0_31ksoftirqd/000:23:060
121650430irq/29-eth0_g0_31ksoftirqd/000:08:130
121650430irq/29-eth0_g0_1964-21runrttasks20:47:100
121430ksoftirqd/1121650irq/29-eth0_g0_19:36:111
121750420irq/30-eth0_g0_22901-21sshd22:33:141
121750420irq/30-eth0_g0_1219-21kworker/1:223:00:571
121650420irq/29-eth0_g0_15995-21timerandwakeup19:53:080
121420ksoftirqd/1121650irq/29-eth0_g0_23:50:221
121420ksoftirqd/1121650irq/29-eth0_g0_22:16:501
121420ksoftirqd/1121650irq/29-eth0_g0_00:22:081
121420ksoftirqd/1121650irq/29-eth0_g0_00:22:081
121750410irq/30-eth0_g0_15364-21runrttasks22:03:041
121750410irq/30-eth0_g0_121ksoftirqd/123:25:331
121750410irq/30-eth0_g0_121ksoftirqd/121:37:121
121650410irq/29-eth0_g0_59712sleep021:25:400
121650410irq/29-eth0_g0_31ksoftirqd/023:37:150
121650410irq/29-eth0_g0_31ksoftirqd/021:29:550
121650410irq/29-eth0_g0_31ksoftirqd/000:36:210
121650410irq/29-eth0_g0_1964-21runrttasks20:27:040
121650410irq/29-eth0_g0_1964-21runrttasks20:27:040
121650410irq/29-eth0_g0_13-21kworker/0:123:55:290
121650410irq/29-eth0_g0_13-21kworker/0:123:05:520
121650410irq/29-eth0_g0_13-21kworker/0:122:03:010
121410ksoftirqd/1121750irq/30-eth0_g0_21:03:011
431599402cyclictest44642sleep119:07:561
121750400irq/30-eth0_g0_20882sleep121:08:201
121750400irq/30-eth0_g0_174892sleep100:24:171
121750400irq/30-eth0_g0_121ksoftirqd/123:40:461
121750400irq/30-eth0_g0_121ksoftirqd/123:28:521
121750400irq/30-eth0_g0_121ksoftirqd/122:31:571
121750400irq/30-eth0_g0_121ksoftirqd/122:31:571
121650400irq/29-eth0_g0_31ksoftirqd/021:37:590
121650400irq/29-eth0_g0_31ksoftirqd/021:37:590
121650400irq/29-eth0_g0_1964-21runrttasks20:35:500
121650400irq/29-eth0_g0_13-21kworker/0:123:51:220
121650400irq/29-eth0_g0_13-21kworker/0:123:13:060
121650400irq/29-eth0_g0_13-21kworker/0:123:10:170
121650400irq/29-eth0_g0_13-21kworker/0:122:59:350
121650400irq/29-eth0_g0_13-21kworker/0:122:14:500
121650400irq/29-eth0_g0_13-21kworker/0:122:10:580
121650400irq/29-eth0_g0_13-21kworker/0:121:47:570
121650400irq/29-eth0_g0_13-21kworker/0:121:15:200
121400ksoftirqd/1121650irq/29-eth0_g0_23:04:381
121400ksoftirqd/1121650irq/29-eth0_g0_20:11:501
121750390irq/30-eth0_g0_121ksoftirqd/122:27:331
121750390irq/30-eth0_g0_121ksoftirqd/121:52:111
121750390irq/30-eth0_g0_1192-21grep23:18:051
121750390irq/30-eth0_g0_0-21swapper/122:56:371
121750390irq/30-eth0_g0_0-21swapper/122:43:301
121650390irq/29-eth0_g0_13-21kworker/0:123:24:030
121650390irq/29-eth0_g0_13-21kworker/0:122:47:180
121650390irq/29-eth0_g0_13-21kworker/0:122:28:120
121650390irq/29-eth0_g0_13-21kworker/0:122:28:120
121650390irq/29-eth0_g0_13-21kworker/0:122:18:080
121650390irq/29-eth0_g0_13-21kworker/0:121:44:340
121650390irq/29-eth0_g0_13-21kworker/0:100:29:140
121390ksoftirqd/1121750irq/30-eth0_g0_23:22:280
121390ksoftirqd/1121750irq/30-eth0_g0_22:36:050
121390ksoftirqd/1121750irq/30-eth0_g0_21:12:000
121390ksoftirqd/1121750irq/30-eth0_g0_00:13:330
121390ksoftirqd/1121650irq/29-eth0_g0_21:39:451
121390ksoftirqd/1121650irq/29-eth0_g0_21:39:451
121390ksoftirqd/1121650irq/29-eth0_g0_19:38:411
121390ksoftirqd/1121650irq/29-eth0_g0_19:30:051
431599382cyclictest16061-21grep19:53:081
431599382cyclictest14850-21unixbench_multi00:13:101
121750380irq/30-eth0_g0_3559-21grep19:03:021
121750380irq/30-eth0_g0_187832sleep100:30:081
121750380irq/30-eth0_g0_1219-21kworker/1:223:46:211
121750380irq/30-eth0_g0_1219-21kworker/1:223:12:561
121750380irq/30-eth0_g0_1219-21kworker/1:200:11:121
121750380irq/30-eth0_g0_121ksoftirqd/121:21:201
121650380irq/29-eth0_g0_8733-21sed19:23:070
121650380irq/29-eth0_g0_8733-21sed19:23:070
121650380irq/29-eth0_g0_4559-21df_inode19:07:570
121650380irq/29-eth0_g0_345-21latency21:03:010
121650380irq/29-eth0_g0_31ksoftirqd/000:04:300
121650380irq/29-eth0_g0_23699-21missed_timers22:38:010
121650380irq/29-eth0_g0_17814-21latency_hist20:02:470
121650380irq/29-eth0_g0_13-21kworker/0:122:00:060
121650380irq/29-eth0_g0_13-21kworker/0:121:54:560
121380ksoftirqd/1121750irq/30-eth0_g0_20:05:460
121380ksoftirqd/1121650irq/29-eth0_g0_21:47:051
121380ksoftirqd/1121650irq/29-eth0_g0_21:29:201
121380ksoftirqd/1121650irq/29-eth0_g0_20:31:131
121380ksoftirqd/1121650irq/29-eth0_g0_20:31:131
431599372cyclictest5656-21grep21:23:081
431599372cyclictest27118-21unixbench_singl20:38:081
431599371cyclictest6984-21df_abs19:17:571
431599371cyclictest6984-21df_abs19:17:571
431599371cyclictest26145-21taskset22:48:011
431599371cyclictest14580-21taskset19:48:031
431599371cyclictest13658-21df21:57:581
121750370irq/30-eth0_g0_1219-21kworker/1:223:34:171
121650370irq/29-eth0_g0_3191-21chrt23:27:470
121650370irq/29-eth0_g0_2109-21lldpd19:17:460
121650370irq/29-eth0_g0_13-21kworker/0:119:28:080
121650370irq/29-eth0_g0_0-21swapper/020:47:580
431599361cyclictest8763-21grep19:23:071
431599361cyclictest8763-21grep19:23:071
431599361cyclictest64582sleep119:14:151
431599361cyclictest27851-21ethtool20:43:001
121650360irq/29-eth0_g0_7378-21grep19:18:050
121650360irq/29-eth0_g0_7378-21grep19:18:050
121650360irq/29-eth0_g0_1964-21runrttasks20:19:550
121650360irq/29-eth0_g0_1964-21runrttasks20:19:550
121650360irq/29-eth0_g0_1964-21runrttasks19:41:480
121650360irq/29-eth0_g0_13-21kworker/0:122:52:540
431599351cyclictest32007-21head20:58:081
431599351cyclictest0-21swapper/120:27:451
431599351cyclictest0-21swapper/120:27:451
431599351cyclictest0-21swapper/120:21:331
431599351cyclictest0-21swapper/120:21:331
121650350irq/29-eth0_g0_1964-21runrttasks20:41:480
121650350irq/29-eth0_g0_14250-21df19:47:570
121650350irq/29-eth0_g0_0-21swapper/019:32:590
121350ksoftirqd/1121650irq/29-eth0_g0_20:53:041
431599341cyclictest17305-21sed19:58:061
121750340irq/30-eth0_g0_29136-21latency20:48:021
121750340irq/30-eth0_g0_25732-21sendmail_mailqu20:33:061
121750340irq/30-eth0_g0_13364-21ntp_states19:43:051
121650330irq/29-eth0_g0_31546-21irqstats20:58:010
121650330irq/29-eth0_g0_30323-21iostat20:53:010
121650330irq/29-eth0_g0_1964-21runrttasks19:42:470
121650330irq/29-eth0_g0_18245-21ntpdc20:03:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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