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2026-05-08 - 12:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack5slot4s.osadl.org (updated Fri May 08, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15550012810,3chrt0-21swapper/221:11:042
1433273996561,3cyclictest1593699-21kworker/u8:1+events_unbound23:30:591
1433273996460,3cyclictest1433129-21kworker/u8:0+events_unbound20:05:571
1433273996258,3cyclictest1717755-21kworker/u8:1+events_unbound00:06:171
1433273996258,3cyclictest1575924-21kworker/u8:2+events_unbound21:31:141
1433273996157,3cyclictest1697502-21kworker/u8:3+events_unbound23:36:131
1433273996157,3cyclictest1433129-21kworker/u8:0+events_unbound21:55:581
1433273996157,3cyclictest1433129-21kworker/u8:0+events_unbound21:26:121
16786712600,1sleep01678674-21basename23:16:020
1433273996056,3cyclictest1433129-21kworker/u8:0+events_unbound20:25:581
1433270996054,4cyclictest1717755-21kworker/u8:1+events_unbound00:26:180
1433273995950,7cyclictest1548972-21latency_hist21:05:011
1433275995849,6cyclictest280-21systemd-journal20:05:012
1433273995854,3cyclictest609401-21kworker/u8:2+events_unbound19:41:121
1433273995854,3cyclictest1433129-21kworker/u8:0+events_unbound21:46:181
1433273995854,3cyclictest1433129-21kworker/u8:0+events_unbound19:36:111
1433270995750,4cyclictest1534158-21latency_hist20:50:010
1433273995652,3cyclictest1433129-21kworker/u8:0+events_unbound20:45:031
1433273995648,6cyclictest1514464-21apt-get20:30:551
1433273995648,5cyclictest1653274-21latency_hist22:50:011
1433273995646,8cyclictest1721823-21ntpq23:56:081
1433270995650,4cyclictest1433129-21kworker/u8:0+events_unbound22:46:120
1433270995547,5cyclictest1433129-21kworker/u8:0+events_unbound23:55:540
1433270995449,3cyclictest1423560-21kworker/u8:1+flush-8:019:11:150
1433273995350,2cyclictest1756744-21kworker/u8:0+events_unbound00:36:161
1433273995349,3cyclictest1697502-21kworker/u8:3+events_unbound23:45:581
1433270995348,4cyclictest1423560-21kworker/u8:1+flush-8:019:46:090
1433275995244,5cyclictest1722679-40logrotate00:00:002
1433273995246,4cyclictest1534479-21apt-get20:50:561
1433270995248,3cyclictest1423560-21kworker/u8:1+flush-8:020:06:120
1433273995145,4cyclictest1594308-21apt-get21:50:561
1433270995146,4cyclictest609401-21kworker/u8:2+flush-8:020:31:120
1433270995145,4cyclictest1593699-21kworker/u8:1+events_unbound22:36:180
1433270995045,3cyclictest1604140-21kworker/u8:2+events_unbound22:31:120
1433273994940,6cyclictest1691920-21ntpq23:26:091
1433270994945,3cyclictest1697502-21kworker/u8:3+events_unbound23:51:030
1433270994944,3cyclictest609401-21kworker/u8:2+flush-8:019:16:150
1433270994943,4cyclictest1568465-21kworker/u8:3+flush-8:021:41:150
1433270994938,9cyclictest280-21systemd-journal21:55:010
1433273994844,3cyclictest1593699-21kworker/u8:1+events_unbound22:31:001
1433273994844,3cyclictest1433129-21kworker/u8:0+events_unbound19:26:191
1433273994842,4cyclictest1742840-21apt-get00:20:551
1433273994839,6cyclictest1707846-21latency_hist23:45:011
1433270994843,4cyclictest1604140-21kworker/u8:2+flush-8:000:11:150
1433270994843,3cyclictest1697502-21kworker/u8:3+flush-8:023:36:100
1433270994743,3cyclictest1544064-21kworker/u8:1+events_unbound21:21:110
1433275994640,4cyclictest1529247-21gpgv20:45:012
1433273994642,3cyclictest1575924-21kworker/u8:2+events_unbound21:37:511
1433273994642,3cyclictest1575924-21kworker/u8:2+events_unbound21:37:501
1433270994640,4cyclictest1717755-21kworker/u8:1+events_unbound00:40:010
1433270994637,7cyclictest280-21systemd-journal23:50:010
1433273994541,3cyclictest609401-21kworker/u8:2+events_unbound20:21:081
1433273994540,3cyclictest1638771-21apt-get22:35:571
1433270994540,4cyclictest1433129-21kworker/u8:0+events_unbound22:26:130
1433270994540,3cyclictest1593699-21kworker/u8:1+events_unbound23:15:000
1433273994440,3cyclictest1604140-21kworker/u8:2+events_unbound23:03:551
1433273994440,3cyclictest1433129-21kworker/u8:0+events_unbound21:40:571
1433270994440,3cyclictest1604140-21kworker/u8:2+events_unbound22:06:130
1433270994439,3cyclictest1449097-21ntpq19:21:100
1433270994439,3cyclictest1449097-21ntpq19:21:100
1433270994435,6cyclictest1479597-21latency_hist19:55:010
1433273994340,2cyclictest1604140-21kworker/u8:2+events_unbound00:02:561
1433273994339,3cyclictest1604140-21kworker/u8:2+events_unbound23:24:031
1433273994339,3cyclictest1604140-21kworker/u8:2+events_unbound23:24:031
1433273994339,3cyclictest1604140-21kworker/u8:2+events_unbound00:14:141
1433273994339,3cyclictest1433129-21kworker/u8:0+events_unbound21:21:001
1433273994339,3cyclictest1433129-21kworker/u8:0+events_unbound20:40:591
1433273994336,5cyclictest280-21systemd-journal20:13:491
1433273994238,3cyclictest609401-21kworker/u8:2+events_unbound19:30:021
1433273994238,3cyclictest1756744-21kworker/u8:0+events_unbound00:32:551
1433273994238,3cyclictest1433129-21kworker/u8:0+events_unbound22:13:491
1433270994238,3cyclictest1604140-21kworker/u8:2+events_unbound22:56:180
1433270994237,4cyclictest1433129-21kworker/u8:0+flush-8:021:11:150
1433270994236,4cyclictest1433129-21kworker/u8:0+events_unbound19:56:120
1433270994231,8cyclictest1539093-21latency_hist20:55:010
1433273994137,3cyclictest1604140-21kworker/u8:2+events_unbound23:19:551
1433273994137,3cyclictest1593699-21kworker/u8:1+events_unbound22:56:021
1433270994137,3cyclictest1433129-21kworker/u8:0+flush-8:021:06:150
1433270994137,3cyclictest1433129-21kworker/u8:0+flush-8:021:06:140
1433270994134,5cyclictest1575924-21kworker/u8:2+flush-8:021:31:110
1433270994132,6cyclictest1648319-21latency_hist22:45:010
1433273994036,3cyclictest1433129-21kworker/u8:0+events_unbound20:38:491
1433270994036,3cyclictest1593699-21kworker/u8:1+events_unbound22:51:130
1433270994036,3cyclictest1433129-21kworker/u8:0+flush-8:019:26:160
1433270994035,3cyclictest1604140-21kworker/u8:2+flush-8:000:01:170
1433270994033,5cyclictest1604140-21kworker/u8:2+flush-8:022:11:090
1433270994031,4cyclictest1604140-21kworker/u8:2+events_unbound23:31:150
1433273993935,3cyclictest1697502-21kworker/u8:3+events_unbound23:50:541
1433270993933,4cyclictest609401-21kworker/u8:2+flush-8:019:41:150
1433270993933,4cyclictest1604140-21kworker/u8:2+flush-8:022:01:080
1433270993933,4cyclictest1433129-21kworker/u8:0+events_unbound19:36:000
1433275993831,5cyclictest1702905-21cp23:40:012
1433275993831,5cyclictest1598942-21awk21:55:002
1433273993834,3cyclictest609401-21kworker/u8:2+events_unbound20:18:181
1433273993834,3cyclictest609401-21kworker/u8:2+events_unbound19:16:211
1433273993834,3cyclictest609401-21kworker/u8:2+events_unbound19:12:371
1433273993834,3cyclictest1433129-21kworker/u8:0+events_unbound21:08:511
1433273993834,3cyclictest1433129-21kworker/u8:0+events_unbound21:08:511
1433273993834,3cyclictest1433129-21kworker/u8:0+events_unbound19:48:271
1433273993832,4cyclictest1737884-21apt-get00:15:551
1433270993834,3cyclictest1717755-21kworker/u8:1+events_unbound00:21:150
1433270993834,3cyclictest1433129-21kworker/u8:0+flush-8:021:36:010
1433270993834,3cyclictest1433129-21kworker/u8:0+flush-8:021:36:010
1433270993832,4cyclictest1604140-21kworker/u8:2+flush-8:023:21:090
1433270993832,4cyclictest1604140-21kworker/u8:2+flush-8:023:21:080
1433270993832,4cyclictest1433129-21kworker/u8:0+flush-8:022:21:130
1433270993832,4cyclictest1433129-21kworker/u8:0+flush-8:020:16:090
1433270993832,4cyclictest1433129-21kworker/u8:0+events_unbound19:31:100
1433273993734,2cyclictest609401-21kworker/u8:2+events_unbound19:20:511
1433273993734,2cyclictest609401-21kworker/u8:2+events_unbound19:20:511
1433273993733,3cyclictest1433129-21kworker/u8:0+events_unbound22:03:561
1433273993728,7cyclictest1433129-21kworker/u8:0+flush-8:022:26:101
1433270993734,2cyclictest1604140-21kworker/u8:2+events_unbound23:40:590
1433270993731,4cyclictest1717755-21kworker/u8:1+flush-8:000:16:050
15740112360,3sleep375-21kworker/3:1-events21:30:553
1433270993632,3cyclictest1433129-21kworker/u8:0+events_unbound20:45:010
14977262350,3sleep20-21swapper/220:11:052
1433275993528,5cyclictest280-21systemd-journal20:09:592
1433273993531,3cyclictest1717755-21kworker/u8:1+events_unbound00:27:111
1433273993531,3cyclictest1604140-21kworker/u8:2+events_unbound22:17:371
1433273993531,3cyclictest1433129-21kworker/u8:0+events_unbound19:59:271
1433273993531,3cyclictest1423560-21kworker/u8:1+events_unbound20:04:511
1433270993532,2cyclictest1717755-21kworker/u8:1+events_unbound00:06:180
1433270993531,3cyclictest1544069-21systemd-run21:00:000
1433270993531,3cyclictest1433129-21kworker/u8:0+flush-8:020:26:100
1433270993531,3cyclictest1423560-21kworker/u8:1+events_unbound20:21:180
1433270993530,3cyclictest1604140-21kworker/u8:2+flush-8:022:16:080
1433270993525,7cyclictest1524045-21latency_hist20:40:010
1433273993430,3cyclictest1433129-21kworker/u8:0+events_unbound22:21:101
1433270993425,6cyclictest1563813-21latency_hist21:20:000
16479462330,6sleep20-21swapper/222:41:172
1433273993330,2cyclictest1604140-21kworker/u8:2+events_unbound22:44:381
1433273993329,3cyclictest609401-21kworker/u8:2+events_unbound21:13:561
1433273993329,3cyclictest1604140-21kworker/u8:2+events_unbound23:05:481
1433273993329,3cyclictest1593699-21kworker/u8:1+events_unbound23:10:251
1433273993329,3cyclictest1423560-21kworker/u8:1+events_unbound19:51:211
1433273993326,5cyclictest1543138-21ntpq20:56:081
1433273993320,5cyclictest1562916-21ntpq21:16:071
1433270993329,3cyclictest1604140-21kworker/u8:2+flush-8:023:06:030
1433270993329,3cyclictest1433129-21kworker/u8:0+events_unbound20:01:140
1433270993328,4cyclictest1568465-21kworker/u8:3+events_unbound21:50:000
1433273993228,3cyclictest1604140-21kworker/u8:2+events_unbound22:52:381
1433273993225,5cyclictest1609162-21apt-get22:05:551
1433270993228,3cyclictest1433129-21kworker/u8:0+flush-8:023:26:160
1433270993227,3cyclictest1717755-21kworker/u8:1+flush-8:000:31:000
14284812324,9sleep20-21swapper/219:05:242
1433275993125,4cyclictest1578687-21gpgv21:35:012
1433270993127,3cyclictest1544064-21kworker/u8:1+events_unbound21:26:020
1433270993127,3cyclictest1433129-21kworker/u8:0+events_unbound21:01:140
1433270993026,3cyclictest1433129-21kworker/u8:0+events_unbound21:56:190
1433275992925,2cyclictest1752226-21unixbench_multi00:26:182
1433275992924,4cyclictest1593699-21kworker/u8:1+events_unbound23:11:132
1433270992925,3cyclictest1433129-21kworker/u8:0+events_unbound20:11:080
1433270992923,4cyclictest1604140-21kworker/u8:2+events_unbound23:00:590
1433275992824,2cyclictest1658607-21aten2_r5power_p22:55:572
1433275992824,2cyclictest1533812-21unixbench_singl20:46:152
1433275992723,2cyclictest1579276-21aten2_r5power_e21:35:592
1433275992723,2cyclictest1579276-21aten2_r5power_e21:35:592
1433275992520,4cyclictest1504278-21idleruntime-cro20:20:002
1433275992520,3cyclictest1628982-21aten2_r5power_p22:25:572
1433275992518,5cyclictest1584331-21cp21:40:012
1433275992421,2cyclictest1433519-21aten2_r5power_c19:10:572
1433275992420,2cyclictest1752971-21aten2_r5power_c00:30:572
1433275992419,4cyclictest609401-21kworker/u8:2+flush-8:019:31:152
143327599240,22cyclictest1747484-21munin-run00:25:012
1433275992320,2cyclictest1693132-21aten2_r5power_c23:30:572
1433275992319,2cyclictest1604557-21fschecks_time22:01:002
1433270992317,4cyclictest1433102-21latency_hist19:10:010
143327599222,14cyclictest1589374-21apt-get21:45:582
1433275992218,2cyclictest1639036-21fschecks_count22:36:022
1433275992218,2cyclictest0-21swapper/223:30:002
143327599220,10cyclictest15072452kthreadcore20:21:062
143327599214,3cyclictest16786742basename23:16:022
1433275992116,3cyclictest1652870-21unixbench_multi22:46:152
14329332214,11sleep10-21swapper/119:08:001
143327599202,13cyclictest1683235-21apt-get23:20:572
143327599202,13cyclictest1683235-21apt-get23:20:562
143327599202,13cyclictest1633829-21apt-get22:30:552
143327599202,12cyclictest1509528-21apt-get20:25:572
1433275992017,2cyclictest1708244-21aten2_r5power_p23:45:582
1433275992017,2cyclictest1544422-21aten2_r5power_e21:00:572
1433275992016,3cyclictest20977-21cron19:45:012
1433275992016,2cyclictest1564252-21aten2_r5power_v21:20:572
1433275992016,2cyclictest0-21swapper/220:59:592
1433275992014,4cyclictest1742505-21munin-run00:20:002
1433275991915,2cyclictest1560060-21uname21:16:022
1433275991910,6cyclictest1760784-21tr00:36:062
1433275991814,2cyclictest1440683-21fschecks_count19:16:012
1433275991814,2cyclictest0-21swapper/223:40:032
14282452182,7sleep30-21swapper/319:05:003
14953222170,2sleep375-21kworker/3:1+events20:11:023
143327599179,6cyclictest1603863-21turbostat.cron22:00:012
143327599177,7cyclictest1478465-21cut19:51:072
143327599177,7cyclictest1470044-21apt-get19:45:562
143327599172,12cyclictest1454058-21ntpq19:26:112
1433275991714,2cyclictest0-21swapper/219:36:162
1433275991713,2cyclictest0-21swapper/219:21:032
1433275991713,2cyclictest0-21swapper/219:21:022
1433275991713,2cyclictest0-21swapper/200:00:592
143327599171,11cyclictest1514813-21fschecks_time20:31:002
17325512169,4sleep30-21swapper/300:09:113
16381342167,6sleep30-21swapper/322:31:163
15141312166,6sleep30-21swapper/320:30:013
143327599167,7cyclictest1728578-21sed00:06:052
143327599162,8cyclictest1614075-21apt-get22:10:582
143327599162,2cyclictest0-21swapper/222:20:272
143327599162,13cyclictest0-21swapper/221:07:502
143327599162,13cyclictest0-21swapper/221:07:492
1433275991613,2cyclictest1519665-21fschecks_count20:36:002
1433275991613,2cyclictest0-21swapper/223:01:282
1433275991613,2cyclictest0-21swapper/222:05:232
1433275991613,2cyclictest0-21swapper/220:52:462
1433275991613,2cyclictest0-21swapper/219:57:002
1433275991612,2cyclictest0-21swapper/223:51:142
1433275991611,3cyclictest0-21swapper/222:51:052
1433275991611,3cyclictest0-21swapper/200:11:022
143327599161,11cyclictest1669330-21ps23:06:042
15280722156,5sleep30-21swapper/320:41:073
143327599159,4cyclictest0-21swapper/221:26:052
1433275991510,3cyclictest0-21swapper/222:16:062
14641582142,8sleep30-21swapper/319:36:153
17427432132,6sleep30-21swapper/300:20:023
16984892132,7sleep30-21swapper/323:36:043
16437262132,7sleep30-21swapper/322:40:583
16239712132,7sleep30-21swapper/322:21:003
14538122132,7sleep30-21swapper/319:26:083
17526372122,5sleep30-21swapper/300:30:003
17479922122,6sleep30-21swapper/300:26:003
17234542122,6sleep30-21swapper/300:01:043
17178442122,6sleep30-21swapper/323:55:023
17081322123,6sleep30-21swapper/323:45:553
17075832122,6sleep30-21swapper/323:41:533
16893132122,6sleep30-21swapper/323:26:043
16821252122,6sleep30-21swapper/323:16:143
16683152122,6sleep30-21swapper/323:05:023
16532942122,5sleep30-21swapper/322:50:013
16528592122,6sleep30-21swapper/322:46:163
16411732122,6sleep30-21swapper/322:36:093
16285952122,5sleep30-21swapper/322:25:013
16081092122,6sleep30-21swapper/322:01:143
16028412122,6sleep30-21swapper/321:56:083
15929662122,6sleep30-21swapper/321:46:093
15786622122,5sleep30-21swapper/321:35:023
15786622122,5sleep30-21swapper/321:35:013
15545372122,6sleep30-21swapper/321:11:023
15535702122,6sleep30-21swapper/321:06:163
15535702122,6sleep30-21swapper/321:06:163
15323162122,6sleep30-21swapper/320:46:063
15043242122,5sleep30-21swapper/320:20:023
15007382122,6sleep30-21swapper/320:16:043
14942282122,6sleep30-21swapper/320:07:503
14853652122,6sleep30-21swapper/320:01:033
14842862122,6sleep30-21swapper/319:57:063
14381662122,6sleep30-21swapper/319:15:013
17581232112,5sleep30-21swapper/300:35:593
17415392112,5sleep30-21swapper/300:16:093
17366022112,5sleep30-21swapper/300:11:073
17133782112,5sleep30-21swapper/323:51:013
16837342110,7sleep30-21swapper/323:21:033
16837342110,7sleep30-21swapper/323:21:033
16733172112,5sleep30-21swapper/323:10:563
16673372112,5sleep30-21swapper/323:01:133
16629542112,5sleep30-21swapper/322:57:523
16189752112,6sleep30-21swapper/322:15:343
16143222112,5sleep30-21swapper/322:11:013
16091362112,5sleep30-21swapper/322:05:553
15964792112,5sleep30-21swapper/321:51:073
15849342112,5sleep30-21swapper/321:41:033
15641452112,5sleep30-21swapper/321:20:573
15591632112,5sleep30-21swapper/321:15:553
15443042112,6sleep30-21swapper/321:00:303
15403652110,6sleep30-21swapper/320:56:053
15348862112,5sleep30-21swapper/320:51:033
15234242112,5sleep30-21swapper/320:36:153
15148102112,5sleep30-21swapper/320:31:013
14787752112,5sleep30-21swapper/319:51:113
14740452112,5sleep30-21swapper/319:46:153
14654832112,5sleep30-21swapper/319:41:013
14550652112,5sleep30-21swapper/319:30:023
14453132112,6sleep30-21swapper/319:20:473
14453132112,6sleep30-21swapper/319:20:473
14406672112,6sleep30-21swapper/319:16:013
16930062102,5sleep30-21swapper/323:30:023
15689872102,5sleep30-21swapper/321:25:053
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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