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2026-07-25 - 23:43

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 Sat Jul 25, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2798221370chrt121650irq/29-eth0_g0_09:46:571
2220821290sleep1121650irq/29-eth0_g0_11:33:241
2360221230chrt121650irq/29-eth0_g0_11:40:250
1211090ksoftirqd/1121750irq/30-eth0_g0_09:49:081
2004921060sleep0121750irq/30-eth0_g0_11:26:510
268022770sleep1121750irq/30-eth0_g0_07:27:491
304092710sleep0121650irq/29-eth0_g0_12:07:480
143692590sleep1121750irq/30-eth0_g0_11:02:431
284562570sleep0121650irq/29-eth0_g0_11:59:490
121500ksoftirqd/1121750irq/30-eth0_g0_10:52:450
121490ksoftirqd/1121650irq/29-eth0_g0_11:55:380
121750480irq/30-eth0_g0_121ksoftirqd/111:09:251
121750470irq/30-eth0_g0_121ksoftirqd/111:46:301
121650470irq/29-eth0_g0_31ksoftirqd/011:47:510
121750440irq/30-eth0_g0_31ksoftirqd/009:12:440
121650440irq/29-eth0_g0_20768-21unixbench_multi07:02:500
121440ksoftirqd/1121750irq/30-eth0_g0_10:01:151
121440ksoftirqd/1121650irq/29-eth0_g0_10:19:201
2127899431cyclictest22731-21/usr/sbin/munin09:22:511
121750430irq/30-eth0_g0_1219-21kworker/1:210:45:531
121750430irq/30-eth0_g0_1219-21kworker/1:210:07:131
121650430irq/29-eth0_g0_1964-21runrttasks10:46:240
121750420irq/30-eth0_g0_31ksoftirqd/011:27:500
121750420irq/30-eth0_g0_1219-21kworker/1:212:22:491
121750420irq/30-eth0_g0_121ksoftirqd/111:27:451
121650420irq/29-eth0_g0_839-21ls10:07:450
121650420irq/29-eth0_g0_1964-21runrttasks12:14:520
121650420irq/29-eth0_g0_13-21kworker/0:111:42:500
121650420irq/29-eth0_g0_13-21kworker/0:109:52:190
121650420irq/29-eth0_g0_121ksoftirqd/111:14:390
121750410irq/30-eth0_g0_1219-21kworker/1:210:48:131
121750410irq/30-eth0_g0_121ksoftirqd/112:07:221
121750410irq/30-eth0_g0_121ksoftirqd/112:07:221
121650410irq/29-eth0_g0_31ksoftirqd/010:59:250
121650410irq/29-eth0_g0_13-21kworker/0:110:20:010
121650410irq/29-eth0_g0_13-21kworker/0:110:04:560
121750400irq/30-eth0_g0_1219-21kworker/1:210:33:341
121750400irq/30-eth0_g0_1219-21kworker/1:210:26:311
121750400irq/30-eth0_g0_1219-21kworker/1:210:12:141
121750400irq/30-eth0_g0_1219-21kworker/1:209:30:101
121750400irq/30-eth0_g0_121ksoftirqd/112:29:191
121750400irq/30-eth0_g0_121ksoftirqd/111:12:511
121750400irq/30-eth0_g0_0-21swapper/110:40:111
121650400irq/29-eth0_g0_31ksoftirqd/010:28:130
121650400irq/29-eth0_g0_28122-21grep07:32:510
121650400irq/29-eth0_g0_13-21kworker/0:112:17:470
121650400irq/29-eth0_g0_13-21kworker/0:111:17:460
121650400irq/29-eth0_g0_13-21kworker/0:111:03:270
121650400irq/29-eth0_g0_13-21kworker/0:110:48:380
121650400irq/29-eth0_g0_13-21kworker/0:109:58:120
2127899392cyclictest6001-21munin-run08:17:281
2127899391cyclictest11667-21unixbench_singl08:37:511
121750390irq/30-eth0_g0_3961-21grep12:32:451
121750390irq/30-eth0_g0_20134-21/usr/sbin/munin07:02:401
121750390irq/30-eth0_g0_1219-21kworker/1:211:17:411
121750390irq/30-eth0_g0_1219-21kworker/1:210:59:561
121750390irq/30-eth0_g0_121ksoftirqd/111:57:291
121750390irq/30-eth0_g0_121ksoftirqd/109:35:451
121750390irq/30-eth0_g0_121ksoftirqd/109:13:441
121750390irq/30-eth0_g0_0-21swapper/111:54:071
121650390irq/29-eth0_g0_2520-21grep10:12:510
121650390irq/29-eth0_g0_240282sleep009:28:450
121650390irq/29-eth0_g0_1964-21runrttasks07:21:480
121650390irq/29-eth0_g0_13-21kworker/0:112:36:290
121650390irq/29-eth0_g0_13-21kworker/0:112:05:310
121650390irq/29-eth0_g0_13-21kworker/0:112:05:310
121650390irq/29-eth0_g0_13-21kworker/0:110:33:590
121650390irq/29-eth0_g0_13-21kworker/0:109:52:590
121650390irq/29-eth0_g0_13-21kworker/0:109:40:490
121650390irq/29-eth0_g0_13-21kworker/0:109:20:000
121650390irq/29-eth0_g0_0-21swapper/008:52:290
121390ksoftirqd/1121750irq/30-eth0_g0_09:06:300
121390ksoftirqd/1121750irq/30-eth0_g0_09:06:300
121390ksoftirqd/1121650irq/29-eth0_g0_07:41:071
2127899382cyclictest232952sleep111:37:531
2127899381cyclictest9173-21unixbench_multi08:27:521
121750380irq/30-eth0_g0_1219-21kworker/1:212:17:491
121750380irq/30-eth0_g0_1219-21kworker/1:209:10:491
121750380irq/30-eth0_g0_121ksoftirqd/110:13:331
121650380irq/29-eth0_g0_7856-21sendmail_mailqu08:22:520
121650380irq/29-eth0_g0_605-21unixbench_singl07:52:510
121650380irq/29-eth0_g0_31ksoftirqd/009:22:450
121650380irq/29-eth0_g0_13-21kworker/0:111:33:480
121650380irq/29-eth0_g0_13-21kworker/0:111:10:500
121650380irq/29-eth0_g0_13-21kworker/0:110:39:450
121650380irq/29-eth0_g0_13-21kworker/0:109:36:060
121650380irq/29-eth0_g0_13-21kworker/0:109:08:560
121650380irq/29-eth0_g0_0-21swapper/107:52:491
121380ksoftirqd/1121750irq/30-eth0_g0_10:25:410
121380ksoftirqd/1121650irq/29-eth0_g0_12:15:071
121380ksoftirqd/1121650irq/29-eth0_g0_10:31:591
121380ksoftirqd/1121650irq/29-eth0_g0_08:49:221
121380ksoftirqd/1121650irq/29-eth0_g0_07:52:291
2127899372cyclictest15783-21munin-run08:57:291
2127899371cyclictest2764-21/usr/sbin/munin08:02:471
2127899371cyclictest22589-21/usr/sbin/munin07:12:391
121750370irq/30-eth0_g0_1219-21kworker/1:209:55:211
121750370irq/30-eth0_g0_1219-21kworker/1:209:38:521
121750370irq/30-eth0_g0_1219-21kworker/1:209:19:421
121750370irq/30-eth0_g0_0-21swapper/110:56:171
121650370irq/29-eth0_g0_30614-21unixbench_singl07:42:520
121650370irq/29-eth0_g0_1964-21runrttasks12:26:100
121650370irq/29-eth0_g0_1964-21runrttasks09:45:590
121650370irq/29-eth0_g0_13-21kworker/0:112:28:010
121650370irq/29-eth0_g0_1169-21/usr/sbin/munin07:57:440
121650370irq/29-eth0_g0_1169-21/usr/sbin/munin07:57:440
2127899362cyclictest24215-21ntp_states07:17:471
2127899361cyclictest30074-21df_abs12:07:421
2127899361cyclictest25760-21grep11:47:521
2127899361cyclictest2093-21snmpd07:24:531
2127899361cyclictest1494-21missed_timers07:57:441
2127899361cyclictest1494-21missed_timers07:57:441
121750360irq/30-eth0_g0_18960-21chrt11:22:301
121750360irq/30-eth0_g0_10450-21unixbench_singl08:32:521
121650360irq/29-eth0_g0_0-21swapper/008:17:530
121650360irq/29-eth0_g0_0-21swapper/007:12:400
2127899352cyclictest27954-21proc_pri07:32:481
2127899351cyclictest7440-21chrt08:22:411
2127899351cyclictest6488-21chrt08:17:471
2127899351cyclictest30478-21fgrep07:42:501
2127899351cyclictest16092-21if_eth008:57:441
2127899351cyclictest16092-21if_eth008:57:441
121650350irq/29-eth0_g0_8938-21ntp_states08:27:480
121650350irq/29-eth0_g0_29119-21ntp_states07:37:470
121650350irq/29-eth0_g0_15341-21unixbench_singl08:52:500
121650350irq/29-eth0_g0_0-21swapper/007:07:410
121350ksoftirqd/1121650irq/29-eth0_g0_08:07:461
2127899341cyclictest17330-21iostat09:02:451
2127899341cyclictest17330-21iostat09:02:451
2127899341cyclictest12666-21ps08:42:471
121650340irq/29-eth0_g0_3084-21awk08:02:530
121650340irq/29-eth0_g0_25295-21latency07:22:440
121650340irq/29-eth0_g0_15907-21cpu08:57:410
121650340irq/29-eth0_g0_15907-21cpu08:57:410
121650340irq/29-eth0_g0_11302-21wc08:37:450
121650340irq/29-eth0_g0_0-21swapper/008:32:420
2127899331cyclictest219422sleep107:07:501
121650330irq/29-eth0_g0_5424-21sendmail_mailtr08:12:510
121650330irq/29-eth0_g0_31291-21df07:47:410
121650330irq/29-eth0_g0_12203-21/usr/sbin/munin08:42:420
121650330irq/29-eth0_g0_0-21swapper/008:07:470
121650330irq/29-eth0_g0_0-21swapper/007:27:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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