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2026-06-19 - 14:48

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 Fri Jun 19, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2125321290sleep1121650irq/29-eth0_g0_10:27:481
1211070ksoftirqd/1121750irq/30-eth0_g0_10:34:461
121890ksoftirqd/1121750irq/30-eth0_g0_10:07:231
121870ksoftirqd/1121750irq/30-eth0_g0_09:54:431
321902720sleep1121750irq/30-eth0_g0_11:11:471
32712610sleep1121750irq/30-eth0_g0_09:14:091
90262570sleep1121750irq/30-eth0_g0_07:24:141
121540ksoftirqd/1121750irq/30-eth0_g0_11:04:151
121500ksoftirqd/1121750irq/30-eth0_g0_11:31:151
121650490irq/29-eth0_g0_899watchdog/010:17:520
121490ksoftirqd/1121650irq/29-eth0_g0_09:40:340
121480ksoftirqd/1121750irq/30-eth0_g0_11:43:161
121480ksoftirqd/1121650irq/29-eth0_g0_09:25:161
121480ksoftirqd/1121650irq/29-eth0_g0_09:25:161
121480ksoftirqd/1121650irq/29-eth0_g0_08:52:591
121470ksoftirqd/1121750irq/30-eth0_g0_11:55:321
121460ksoftirqd/1121750irq/30-eth0_g0_12:33:081
121460ksoftirqd/1121750irq/30-eth0_g0_11:18:051
121460ksoftirqd/1121650irq/29-eth0_g0_10:51:381
121450ksoftirqd/1121650irq/29-eth0_g0_11:51:041
121450ksoftirqd/1121650irq/29-eth0_g0_11:26:201
121450ksoftirqd/1121650irq/29-eth0_g0_08:23:301
121650440irq/29-eth0_g0_29587-21cat08:49:100
121440ksoftirqd/1121650irq/29-eth0_g0_11:13:010
121440ksoftirqd/1121650irq/29-eth0_g0_08:13:571
121430ksoftirqd/1121750irq/30-eth0_g0_11:45:230
121430ksoftirqd/1121750irq/30-eth0_g0_11:31:130
121430ksoftirqd/1121750irq/30-eth0_g0_11:03:481
121430ksoftirqd/1121750irq/30-eth0_g0_10:25:570
121430ksoftirqd/1121750irq/30-eth0_g0_10:03:170
121430ksoftirqd/1121750irq/30-eth0_g0_09:49:451
121430ksoftirqd/1121750irq/30-eth0_g0_09:35:491
121430ksoftirqd/1121650irq/29-eth0_g0_07:58:561
121750420irq/30-eth0_g0_15080-21runrttasks10:02:131
121750420irq/30-eth0_g0_1219-21kworker/1:211:48:331
121750420irq/30-eth0_g0_121ksoftirqd/109:33:281
121650420irq/29-eth0_g0_6643-21sort07:14:170
121650420irq/29-eth0_g0_4215-21unixbench_multi07:04:160
121650420irq/29-eth0_g0_31ksoftirqd/010:06:550
121650420irq/29-eth0_g0_31ksoftirqd/008:58:560
121650420irq/29-eth0_g0_1964-21runrttasks07:42:540
121420ksoftirqd/1121650irq/29-eth0_g0_10:10:090
121420ksoftirqd/1121650irq/29-eth0_g0_10:10:090
121750410irq/30-eth0_g0_1219-21kworker/1:209:47:131
121750410irq/30-eth0_g0_1219-21kworker/1:209:19:291
121650410irq/29-eth0_g0_5436-21cat07:09:180
121650410irq/29-eth0_g0_13-21kworker/0:112:34:180
121650410irq/29-eth0_g0_13-21kworker/0:112:34:180
121650410irq/29-eth0_g0_13-21kworker/0:112:05:040
121650410irq/29-eth0_g0_13-21kworker/0:111:20:210
121650410irq/29-eth0_g0_13-21kworker/0:110:51:130
121650410irq/29-eth0_g0_13-21kworker/0:110:21:290
121410ksoftirqd/1121650irq/29-eth0_g0_09:41:171
473999401cyclictest1727-21diskmemload10:42:181
121750400irq/30-eth0_g0_121ksoftirqd/109:13:561
121650400irq/29-eth0_g0_30439-21open_files11:04:130
121650400irq/29-eth0_g0_1964-21runrttasks07:28:480
121650400irq/29-eth0_g0_13-21kworker/0:112:19:250
121650400irq/29-eth0_g0_13-21kworker/0:112:09:290
121650400irq/29-eth0_g0_13-21kworker/0:111:54:420
121650400irq/29-eth0_g0_13-21kworker/0:111:35:050
121650400irq/29-eth0_g0_13-21kworker/0:111:17:000
121650400irq/29-eth0_g0_13-21kworker/0:111:03:380
121650400irq/29-eth0_g0_13-21kworker/0:109:31:190
121400ksoftirqd/1121650irq/29-eth0_g0_10:44:561
473999392cyclictest6295-21irqstats07:14:111
473999392cyclictest2109-21lldpd07:42:281
473999391cyclictest13454-21wc12:08:551
121750390irq/30-eth0_g0_202622chrt08:09:190
121750390irq/30-eth0_g0_13-21kworker/0:111:59:530
121750390irq/30-eth0_g0_13-21kworker/0:111:59:530
121750390irq/30-eth0_g0_1219-21kworker/1:210:56:491
121750390irq/30-eth0_g0_1219-21kworker/1:210:56:491
121650390irq/29-eth0_g0_8790-21df_inode11:49:080
121650390irq/29-eth0_g0_31ksoftirqd/009:44:110
121650390irq/29-eth0_g0_25636-21processes10:44:140
121650390irq/29-eth0_g0_13-21kworker/0:112:29:170
121650390irq/29-eth0_g0_13-21kworker/0:109:09:090
121650390irq/29-eth0_g0_0-21swapper/009:34:180
121390ksoftirqd/1121750irq/30-eth0_g0_11:27:590
121390ksoftirqd/1121750irq/30-eth0_g0_10:31:550
121390ksoftirqd/1121750irq/30-eth0_g0_09:50:150
121390ksoftirqd/1121750irq/30-eth0_g0_07:49:370
121390ksoftirqd/1121650irq/29-eth0_g0_12:24:231
121390ksoftirqd/1121650irq/29-eth0_g0_10:23:561
121750380irq/30-eth0_g0_4297-21grep07:04:161
121750380irq/30-eth0_g0_17419-21seq10:10:551
121750380irq/30-eth0_g0_17419-21seq10:10:551
121750380irq/30-eth0_g0_121ksoftirqd/112:38:541
121750380irq/30-eth0_g0_121ksoftirqd/112:38:541
121750380irq/30-eth0_g0_121ksoftirqd/110:15:071
121750380irq/30-eth0_g0_0-21swapper/111:18:581
121650380irq/29-eth0_g0_32353-21mailstats08:59:180
121650380irq/29-eth0_g0_1964-21runrttasks08:19:120
121650380irq/29-eth0_g0_15161-21grep12:14:150
121650380irq/29-eth0_g0_13-21kworker/0:112:25:460
121650380irq/29-eth0_g0_13-21kworker/0:110:56:560
121650380irq/29-eth0_g0_13-21kworker/0:110:56:560
121650380irq/29-eth0_g0_13-21kworker/0:109:27:190
121650380irq/29-eth0_g0_13-21kworker/0:109:27:190
121650380irq/29-eth0_g0_13-21kworker/0:109:23:400
121650380irq/29-eth0_g0_13-21kworker/0:109:14:130
121650380irq/29-eth0_g0_11355-21chrt07:34:160
121650380irq/29-eth0_g0_0-21swapper/007:59:160
121380ksoftirqd/1121650irq/29-eth0_g0_08:41:541
473999372cyclictest26337-21grep08:34:181
473999372cyclictest14243-21grep12:09:181
473999372cyclictest10016-21runrttasks07:29:111
473999371cyclictest23789-21wc08:24:171
473999371cyclictest18271-21cat08:03:571
473999371cyclictest1727-21diskmemload12:14:151
473999371cyclictest15309-21head07:49:181
473999371cyclictest14066-21sed07:44:181
121750370irq/30-eth0_g0_21437-21unixbench_singl08:14:171
121750370irq/30-eth0_g0_21437-21unixbench_singl08:14:171
121750370irq/30-eth0_g0_16287-21missed_timers12:19:111
121750370irq/30-eth0_g0_0-21swapper/111:38:191
121650370irq/29-eth0_g0_1964-21runrttasks07:55:100
121650370irq/29-eth0_g0_13-21kworker/0:111:43:140
121650370irq/29-eth0_g0_13-21kworker/0:110:34:190
121650370irq/29-eth0_g0_13-21kworker/0:109:55:280
121650370irq/29-eth0_g0_1127-21awk09:04:180
473999361cyclictest112622sleep111:59:081
473999361cyclictest112622sleep111:59:081
473999361cyclictest0-21swapper/109:08:041
121750360irq/30-eth0_g0_1219-21kworker/1:210:31:111
121650360irq/29-eth0_g0_28789-21unixbench_singl08:44:170
121650360irq/29-eth0_g0_24547-21unixbench_multi10:39:170
121650360irq/29-eth0_g0_23645-21chrt08:24:150
121650360irq/29-eth0_g0_2109-21lldpd07:21:550
121650360irq/29-eth0_g0_1964-21runrttasks08:43:250
121650360irq/29-eth0_g0_1964-21runrttasks07:44:010
121360ksoftirqd/124509-21grep08:29:111
473999351cyclictest5484-21unixbench_multi07:09:181
473999351cyclictest11637-21grep07:34:201
121650350irq/29-eth0_g0_25567-21munin-run08:33:550
121650350irq/29-eth0_g0_10111-21ntpdc07:29:130
121350ksoftirqd/128505-21seq08:44:121
473999341cyclictest8282-21seq07:22:261
473999341cyclictest310912sleep108:54:151
121650340irq/29-eth0_g0_26302-21unixbench_multi08:34:170
121650340irq/29-eth0_g0_21288-21sendmail_mailqu08:14:150
121650340irq/29-eth0_g0_21288-21sendmail_mailqu08:14:150
121340ksoftirqd/1121750irq/30-eth0_g0_08:05:330
473999331cyclictest0-21swapper/109:01:351
121750330irq/30-eth0_g0_0-21swapper/108:04:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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