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2026-09-14 - 01:31

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 Sun Sep 13, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1782121520sleep1121650irq/29-eth0_g0_12:01:041
1211100ksoftirqd/1121750irq/30-eth0_g0_08:55:451
1211100ksoftirqd/1121750irq/30-eth0_g0_08:55:451
1211020ksoftirqd/1121750irq/30-eth0_g0_11:47:400
1211020ksoftirqd/1121750irq/30-eth0_g0_07:35:561
121830ksoftirqd/1121750irq/30-eth0_g0_12:30:451
309692670sleep0121650irq/29-eth0_g0_10:44:330
121540ksoftirqd/1121750irq/30-eth0_g0_12:12:171
121540ksoftirqd/1121750irq/30-eth0_g0_12:12:171
121530ksoftirqd/1121750irq/30-eth0_g0_10:31:561
251592500sleep0121650irq/29-eth0_g0_12:31:050
121490ksoftirqd/1121650irq/29-eth0_g0_12:08:300
121490ksoftirqd/1121650irq/29-eth0_g0_09:57:360
121480ksoftirqd/1121650irq/29-eth0_g0_09:26:410
121460ksoftirqd/1121750irq/30-eth0_g0_10:57:241
121750450irq/30-eth0_g0_1219-21kworker/1:210:35:401
121450ksoftirqd/1121750irq/30-eth0_g0_11:35:101
121450ksoftirqd/1121650irq/29-eth0_g0_12:23:160
214902440sleep1121650irq/29-eth0_g0_12:16:061
121650440irq/29-eth0_g0_31ksoftirqd/012:27:450
121440ksoftirqd/1121750irq/30-eth0_g0_07:35:470
193312430sleep1121750irq/30-eth0_g0_12:09:281
121750430irq/30-eth0_g0_1219-21kworker/1:211:01:241
121750430irq/30-eth0_g0_1219-21kworker/1:209:29:581
121650430irq/29-eth0_g0_590-21cpu08:40:390
121650430irq/29-eth0_g0_31ksoftirqd/009:08:060
121650430irq/29-eth0_g0_169282sleep111:59:561
121430ksoftirqd/1121650irq/29-eth0_g0_10:09:130
10422430sleep0121650irq/29-eth0_g0_10:55:280
121750420irq/30-eth0_g0_1219-21kworker/1:210:20:561
121750420irq/30-eth0_g0_1219-21kworker/1:210:03:551
121750420irq/30-eth0_g0_1219-21kworker/1:209:53:401
121650420irq/29-eth0_g0_9158-21unixbench_multi07:00:510
121650420irq/29-eth0_g0_31ksoftirqd/010:35:490
121650420irq/29-eth0_g0_13-21kworker/0:110:33:180
121650420irq/29-eth0_g0_11275-21missed_timers11:35:450
121420ksoftirqd/1121650irq/29-eth0_g0_11:44:060
121420ksoftirqd/1121650irq/29-eth0_g0_09:49:451
967399411cyclictest5521-21grep11:10:531
121650410irq/29-eth0_g0_13-21kworker/0:112:13:190
121650410irq/29-eth0_g0_13-21kworker/0:112:13:190
121650410irq/29-eth0_g0_13-21kworker/0:109:46:510
121650410irq/29-eth0_g0_121ksoftirqd/110:47:030
121410ksoftirqd/1121650irq/29-eth0_g0_12:19:500
9673994034cyclictest13378-21timerandwakeup09:30:511
9673994034cyclictest13378-21timerandwakeup09:30:511
121750400irq/30-eth0_g0_31ksoftirqd/009:14:180
121650400irq/29-eth0_g0_31ksoftirqd/009:18:290
121650400irq/29-eth0_g0_21215-21proc_pri07:50:460
121650400irq/29-eth0_g0_13-21kworker/0:112:01:400
121650400irq/29-eth0_g0_13-21kworker/0:111:05:500
121650400irq/29-eth0_g0_13-21kworker/0:109:51:250
121650400irq/29-eth0_g0_121ksoftirqd/111:26:340
121650400irq/29-eth0_g0_121ksoftirqd/107:55:481
967399391cyclictest23342-21df_inode12:25:441
967399391cyclictest12120-21sort11:40:291
121750390irq/30-eth0_g0_9248-21df_abs09:15:411
121750390irq/30-eth0_g0_14665-21unixbench_multi09:35:501
121750390irq/30-eth0_g0_1219-21kworker/1:211:16:261
121750390irq/30-eth0_g0_1219-21kworker/1:211:06:541
121750390irq/30-eth0_g0_1219-21kworker/1:210:49:301
121750390irq/30-eth0_g0_1219-21kworker/1:210:44:131
121750390irq/30-eth0_g0_1219-21kworker/1:210:13:511
121750390irq/30-eth0_g0_1219-21kworker/1:209:57:421
121650390irq/29-eth0_g0_16338-21chrt09:45:100
121650390irq/29-eth0_g0_13-21kworker/0:111:17:530
121650390irq/29-eth0_g0_13-21kworker/0:110:18:000
121650390irq/29-eth0_g0_13-21kworker/0:110:11:070
121650390irq/29-eth0_g0_13-21kworker/0:109:33:200
121650390irq/29-eth0_g0_13-21kworker/0:109:33:200
121390ksoftirqd/1121650irq/29-eth0_g0_11:43:031
967399381cyclictest15839-21grep07:30:301
121750380irq/30-eth0_g0_9061-21sendmail_mailqu07:00:491
121750380irq/30-eth0_g0_31ksoftirqd/011:03:540
121750380irq/30-eth0_g0_1219-21kworker/1:211:53:071
121750380irq/30-eth0_g0_1219-21kworker/1:211:24:561
121750380irq/30-eth0_g0_1219-21kworker/1:210:28:041
121750380irq/30-eth0_g0_121ksoftirqd/111:25:361
121750380irq/30-eth0_g0_121ksoftirqd/110:51:161
121650380irq/29-eth0_g0_31ksoftirqd/010:55:480
121650380irq/29-eth0_g0_20398-21cat10:00:430
121650380irq/29-eth0_g0_13-21kworker/0:111:56:260
121650380irq/29-eth0_g0_13-21kworker/0:109:37:420
121650380irq/29-eth0_g0_13-21kworker/0:109:20:310
121380ksoftirqd/1121650irq/29-eth0_g0_09:10:491
967399371cyclictest22511-21taskset12:20:511
967399371cyclictest20059-21rt-features07:45:501
121750370irq/30-eth0_g0_1219-21kworker/1:209:40:341
121750370irq/30-eth0_g0_1219-21kworker/1:209:21:041
121750370irq/30-eth0_g0_1219-21kworker/1:209:08:091
121750370irq/30-eth0_g0_121ksoftirqd/110:16:431
121650370irq/29-eth0_g0_31ksoftirqd/010:29:080
121650370irq/29-eth0_g0_28772-21unixbench_singl08:20:520
121650370irq/29-eth0_g0_16535-21unixbench_singl07:30:520
121650370irq/29-eth0_g0_13-21kworker/0:111:34:570
121650370irq/29-eth0_g0_13-21kworker/0:110:21:160
121650370irq/29-eth0_g0_0-21swapper/007:42:250
121370ksoftirqd/1121650irq/29-eth0_g0_09:03:291
121370ksoftirqd/1121650irq/29-eth0_g0_09:03:291
967399362cyclictest22069-21unixbench_singl10:05:561
967399362cyclictest12702sleep108:40:511
967399361cyclictest3710-21unixbench_singl08:50:521
967399361cyclictest32452-21unixbench_singl08:35:511
967399361cyclictest23470-21latency08:00:451
121650360irq/29-eth0_g0_9898-21df_abs07:05:420
121650360irq/29-eth0_g0_4475-21wc08:55:440
121650360irq/29-eth0_g0_4475-21wc08:55:440
121650360irq/29-eth0_g0_4136-21munin-run08:55:290
121650360irq/29-eth0_g0_31ksoftirqd/011:21:560
121650360irq/29-eth0_g0_1964-21runrttasks09:00:490
121650360irq/29-eth0_g0_1964-21runrttasks09:00:490
121650360irq/29-eth0_g0_14002-21timerandwakeup11:45:531
121650360irq/29-eth0_g0_11354-21awk07:10:440
121360ksoftirqd/1121650irq/29-eth0_g0_11:50:350
121360ksoftirqd/1121650irq/29-eth0_g0_07:33:521
967399351cyclictest30600-21chrt08:30:421
967399351cyclictest0-21swapper/107:15:531
121650350irq/29-eth0_g0_5007-21/usr/sbin/munin11:10:430
121650350irq/29-eth0_g0_29862-21find08:25:500
121650350irq/29-eth0_g0_27506-21unixbench_multi08:15:510
121650350irq/29-eth0_g0_23358-21/usr/sbin/munin08:00:430
121650350irq/29-eth0_g0_1964-21runrttasks08:49:410
121650350irq/29-eth0_g0_13722-21memory07:20:450
121650350irq/29-eth0_g0_13398-21ls07:20:300
967399341cyclictest26983-21sed08:15:411
967399341cyclictest2427-21unixbench_multi08:45:501
967399341cyclictest14078-21grep07:20:511
121750340irq/30-eth0_g0_11671-21unixbench_singl07:10:491
121650340irq/29-eth0_g0_24695-21latency08:05:460
121650340irq/29-eth0_g0_20131-21timerandwakeup07:45:510
121650340irq/29-eth0_g0_1964-21runrttasks08:33:360
121650340irq/29-eth0_g0_1964-21runrttasks08:13:400
121650340irq/29-eth0_g0_0-21swapper/007:55:540
967399331cyclictest24831-21taskset08:05:491
967399331cyclictest21383-21unixbench_multi07:50:481
967399331cyclictest10031-21latency07:05:451
967399331cyclictest0-21swapper/108:25:421
121650330irq/29-eth0_g0_31973-21if_eth008:35:430
121650330irq/29-eth0_g0_26302-21unixbench_multi08:10:511
121650330irq/29-eth0_g0_15281-21unixbench_multi07:25:490
967399321cyclictest28231-21taskset08:20:421
967399321cyclictest18323-21cpu07:40:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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