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2026-08-06 - 20:26

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
Click here to display the system's profile data or here to proceed to next system.
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, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack5slot4s.osadl.org (updated Thu Aug 06, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
181660421990,5sleep3481ktimers/312:00:003
158238321410,2sleep3451irq_work/308:02:593
18079072770,1chrt1807911-21irqrtprio11:52:532
15904602670,4sleep00-21swapper/008:12:550
1527047995853,3cyclictest1707442-21kworker/u8:3+events_unbound11:20:001
1527047995347,5cyclictest1517310-21kworker/u8:0+events_unbound07:18:051
1527047995146,4cyclictest1707442-21kworker/u8:3+flush-8:010:33:061
1527047994842,5cyclictest1737322-21kworker/u8:1+flush-8:012:13:071
1527047994739,6cyclictest1777515-21/usr/sbin/munin11:23:061
1527047994640,4cyclictest1648067-21kworker/u8:1+flush-8:009:13:071
1527050994534,8cyclictest1821766-21awk12:05:002
1527047994540,4cyclictest1737322-21kworker/u8:1+flush-8:011:57:491
1527047994539,5cyclictest1707442-21kworker/u8:3+flush-8:011:53:041
1527047994439,3cyclictest1563837-21kworker/u8:1+events_unbound08:12:521
1527045994438,4cyclictest1737322-21kworker/u8:1+events_unbound11:33:030
1527047994337,5cyclictest1598627-21kworker/u8:0+flush-8:009:27:521
1527047994335,5cyclictest1817292-21/usr/sbin/munin12:03:061
1527050994222,18cyclictest1618154-21idleruntime-cro08:40:002
1527047994237,4cyclictest1598627-21kworker/u8:0+flush-8:010:47:521
1527047994237,4cyclictest1598627-21kworker/u8:0+events_unbound09:47:521
1527047994236,5cyclictest1648067-21kworker/u8:1+flush-8:009:33:051
1527047994236,5cyclictest1598627-21kworker/u8:0+flush-8:010:08:061
1527047994236,4cyclictest1797069-21kworker/u8:0+events_unbound11:42:491
1527047994235,5cyclictest1786926-21latency_hist11:30:011
1527047994235,5cyclictest1613465-21kworker/u8:3+flush-8:008:43:071
1527047994136,4cyclictest1797069-21kworker/u8:0+events_unbound12:37:501
1527047994132,7cyclictest275-21systemd-journal10:55:001
1527047994131,8cyclictest1677123-21ntpq09:38:021
1527050994025,13cyclictest1752134-21unixbench_singl10:53:082
1527047994035,4cyclictest1598627-21kworker/u8:0+flush-8:009:07:521
1527047994035,3cyclictest1747608-21kworker/u8:2+events_unbound10:57:511
1527047993934,3cyclictest1826747-21kworker/u8:2+flush-8:012:23:051
1527047993934,3cyclictest1598627-21kworker/u8:0+events_unbound09:18:041
1527045993934,3cyclictest1517310-21kworker/u8:0+events_unbound07:27:490
1527045993932,5cyclictest1290803-21kworker/u8:2+flush-8:007:48:000
1527047993834,3cyclictest1707442-21kworker/u8:3+events_unbound11:02:521
1527047993833,4cyclictest1517310-21kworker/u8:0+flush-8:007:27:541
1527047993832,4cyclictest1613220-21latency_hist08:35:011
1527045993828,8cyclictest1796142-21ntpq11:38:010
1527050993720,15cyclictest1712747-21latency_hist10:15:002
1527050993719,16cyclictest1578399-21idleruntime-cro08:00:002
1527047993733,3cyclictest1737322-21kworker/u8:1+events_unbound12:07:551
1527045993732,4cyclictest1737322-21kworker/u8:1+events_unbound12:05:010
1527047993630,4cyclictest1648067-21kworker/u8:1+flush-8:010:13:081
1527047993630,4cyclictest1613465-21kworker/u8:3+events_unbound08:58:051
1527047993629,5cyclictest1722864-21kworker/u8:2+flush-8:010:37:521
1527050993520,13cyclictest1628640-21aten2_r5power_v08:52:492
1527050993516,2cyclictest0-21swapper/209:00:002
1527047993530,4cyclictest1797069-21kworker/u8:0+events_unbound12:27:501
1527047993530,4cyclictest1648067-21kworker/u8:1+events_unbound10:17:511
1527047993528,4cyclictest1563837-21kworker/u8:1+flush-8:007:52:551
152705099343,8cyclictest1837098-21apt-get12:22:452
1527047993424,7cyclictest275-21systemd-journal08:20:011
1527045993430,3cyclictest1290803-21kworker/u8:2+events_unbound08:30:000
1527045993425,7cyclictest1618163-21latency_hist08:40:010
1527050993319,12cyclictest1788310-21grep11:32:542
1527050993316,3cyclictest1799471-21sort11:42:552
1527047993329,3cyclictest1290803-21kworker/u8:2+flush-8:008:53:061
1527047993329,3cyclictest1290803-21kworker/u8:2+events_unbound08:08:071
1527047993328,3cyclictest1737322-21kworker/u8:1+events_unbound11:12:521
1527047993328,3cyclictest1511934-21kworker/u8:3+events_unbound07:57:551
1527047993327,5cyclictest1648067-21kworker/u8:1+flush-8:009:52:501
1527047993327,4cyclictest1707442-21kworker/u8:3+events_unbound11:32:541
1527047993327,4cyclictest1563837-21kworker/u8:1+flush-8:008:28:031
1527047993327,4cyclictest1511934-21kworker/u8:3+events_unbound07:42:531
1527047993327,4cyclictest1511934-21kworker/u8:3+events_unbound07:42:531
1527047993322,9cyclictest1567781-21ntpq07:47:591
1527050993215,3cyclictest0-21swapper/209:15:012
1527050993215,2cyclictest1777050-21cron11:20:002
1527050993215,2cyclictest0-21swapper/211:58:042
152705099321,12cyclictest1534277-21apt-get07:17:472
1527047993228,3cyclictest1517310-21kworker/u8:0+flush-8:007:22:511
1527047993228,2cyclictest1531924-21systemd-run07:15:001
1527047993226,4cyclictest1549120-21apt-get07:32:471
152704599329,10cyclictest1727120-21expr10:28:050
1527045993225,6cyclictest1678379-21aten2_r5power_v09:42:490
1527045993223,6cyclictest275-21systemd-journal07:17:150
1527050993114,2cyclictest0-21swapper/210:57:472
1527047993126,3cyclictest1693326-21cpuspeed_turbos09:57:481
1527045993127,3cyclictest1687720-21systemd-run09:50:000
1527045993126,3cyclictest1707442-21kworker/u8:3+events_unbound10:12:530
1527045993125,5cyclictest1752339-21cron10:55:000
1527045993124,5cyclictest1846540-21latency_hist12:30:000
1527045993124,5cyclictest1639005-21irqcore09:02:540
1527045993120,9cyclictest275-21systemd-journal08:17:500
1527050993025,3cyclictest1667689-21unixbench_singl09:28:072
1527047993025,3cyclictest1628090-21systemd-run08:50:001
1527047993023,5cyclictest275-21systemd-journal07:39:141
1527045993025,4cyclictest1598627-21kworker/u8:0+flush-8:009:07:560
1527045993025,3cyclictest1608832-21aten2_r5power_v08:32:480
1527045993024,4cyclictest1579410-21irqcore08:02:560
1527045993023,5cyclictest1601009-21kthreadcore08:22:560
1527045993022,6cyclictest1531906-21latency_hist07:15:010
1527045993021,7cyclictest1746666-21ntpq10:48:000
152704599301,8cyclictest1654374-21irqstats09:17:560
15223342304,9sleep20-21swapper/207:06:502
1527050992916,2cyclictest0-21swapper/211:07:592
1527050992911,7cyclictest1856206-21unixbench_singl12:38:062
1527047992925,3cyclictest1511934-21kworker/u8:3+flush-8:008:17:571
1527047992924,4cyclictest1707442-21kworker/u8:3+flush-8:011:07:531
1527047992924,3cyclictest1598627-21kworker/u8:0+flush-8:009:23:021
1527045992925,3cyclictest1598627-21kworker/u8:0+events_unbound10:08:050
1527045992924,3cyclictest1736678-21needreboot10:37:590
1527045992923,4cyclictest1664151-21irqrtprio09:27:540
1527047992825,2cyclictest1598627-21kworker/u8:0+events_unbound10:44:321
1527047992823,4cyclictest1613465-21kworker/u8:3+flush-8:008:38:061
1527047992821,5cyclictest1726683-21/usr/sbin/munin10:27:571
1527045992824,3cyclictest1826747-21kworker/u8:2+events_unbound12:22:470
1527045992824,3cyclictest1707442-21kworker/u8:3+flush-8:011:40:590
152704599282,25cyclictest0-21swapper/010:33:060
1527045992821,5cyclictest1553368-21grep07:33:080
1527045992821,5cyclictest1290803-21kworker/u8:2+events_unbound09:13:060
1527050992724,2cyclictest1657826-21unixbench_singl09:18:082
1527050992721,4cyclictest1672846-21turbostat.cron09:35:002
1527050992721,4cyclictest1583596-21apt-config08:05:012
1527047992722,4cyclictest1598627-21kworker/u8:0+flush-8:010:03:081
1527047992722,4cyclictest1598627-21kworker/u8:0+events_unbound10:22:521
1527045992724,2cyclictest1816601-21apt-get12:00:000
1527045992723,3cyclictest1558674-21systemd-run07:40:000
1527045992722,4cyclictest1757973-21cpuspeed_turbos11:02:500
1527045992721,4cyclictest275-21systemd-journal07:25:000
1527045992721,4cyclictest1672669-21unixbench_singl09:33:060
1527045992721,4cyclictest1598627-21kworker/u8:0+events_unbound10:43:030
1527045992720,6cyclictest1563353-21unixbench_singl07:43:040
1527045992720,6cyclictest1563353-21unixbench_singl07:43:040
1527045992717,8cyclictest1835920-21ntpq12:18:020
1527047992621,4cyclictest1678033-21kworker/u8:3+events_unbound09:42:551
1527045992622,3cyclictest1707442-21kworker/u8:3+flush-8:011:20:310
1527045992622,3cyclictest1707442-21kworker/u8:3+events_unbound11:13:050
1527045992621,4cyclictest1776847-21unixbench_singl11:18:070
1527045992621,3cyclictest1687715-21kworker/u8:2+events_unbound09:58:000
1527045992621,3cyclictest1588252-21unixbench_multi08:08:070
1527045992620,5cyclictest1662773-21unixbench_singl09:23:040
1527045992619,5cyclictest1629057-21sort08:52:530
1527045992618,6cyclictest275-21systemd-journal10:19:590
1527050992521,3cyclictest1772111-21cron11:15:002
1527047992520,3cyclictest1578879-21apt-get08:02:491
1527047992519,4cyclictest1737322-21kworker/u8:1+flush-8:011:48:061
1527047992518,5cyclictest1638416-21apt-get09:02:461
1527045992522,2cyclictest1698999-21kthreadcore10:02:560
1527045992521,3cyclictest1808117-21kthreadcore11:52:540
1527045992520,4cyclictest1598627-21kworker/u8:0+flush-8:009:53:070
1527045992520,3cyclictest1668155-21kworker/u8:2+events_unbound09:38:000
1527045992520,3cyclictest0-21swapper/012:13:000
1527045992518,6cyclictest1637925-21cron08:59:590
1527045992517,6cyclictest275-21systemd-journal12:10:000
1527045992517,6cyclictest1802847-21irqcore11:47:530
152704599250,9cyclictest1627622-21switchtime08:48:060
15656482240,4sleep3575-21kworker/3:2-mm_percpu_wq07:47:553
1527050992419,3cyclictest1677583-21unixbench_singl09:38:082
1527047992418,4cyclictest1797069-21kworker/u8:0+flush-8:012:33:061
1527045992419,4cyclictest1747608-21kworker/u8:2+flush-8:011:05:560
1527045992417,6cyclictest1618724-21aten2_r5power_p08:42:500
1527050992319,3cyclictest1782767-21fschecks_time11:27:512
1527050992319,2cyclictest1647651-21unixbench_singl09:08:072
1527050992319,2cyclictest1549178-21aten2_r5power_e07:32:502
1527050992318,3cyclictest1723325-21cpuspeed_turbos10:27:492
1527047992319,3cyclictest1707442-21kworker/u8:3+events_unbound11:37:101
1527047992316,3cyclictest0-21swapper/112:17:491
1527045992319,3cyclictest1290803-21kworker/u8:2+flush-8:007:53:220
1527045992319,2cyclictest0-21swapper/011:27:490
1527045992318,4cyclictest1722388-21unixbench_multi10:23:060
1527045992317,5cyclictest1856219-21unixbench_singl12:38:060
1527050992217,4cyclictest1828111-21kthreadcore12:12:562
1527050992217,4cyclictest1697596-21sendmail10:00:002
1527045992217,3cyclictest0-21swapper/007:57:510
15222352222,3sleep00-21swapper/007:05:310
1527050992118,2cyclictest1758046-21fschecks_count11:02:522
1527050992117,3cyclictest1544265-21aten2_r5power_p07:27:482
1527050992116,3cyclictest1569020-21aten2_r5power_c07:52:492
1527050992112,7cyclictest1717661-21cat10:19:592
1527050992112,6cyclictest1849903-21tr12:32:572
1527045992117,3cyclictest1747608-21kworker/u8:2+flush-8:010:55:310
1527050992017,2cyclictest1742987-21aten2_r5power_e10:47:492
1527050992017,2cyclictest0-21swapper/211:25:002
1527045992016,2cyclictest0-21swapper/012:31:560
15221992204,10sleep10-21swapper/107:05:041
1527050991915,2cyclictest0-21swapper/210:10:002
1527050991915,2cyclictest0-21swapper/208:43:052
1527050991914,3cyclictest0-21swapper/212:20:002
15221962192,8sleep30-21swapper/307:05:023
152705099189,2cyclictest0-21swapper/208:48:012
1527050991815,2cyclictest1588257-21unixbench_multi08:08:072
1527050991814,3cyclictest1843605-21kthreadcore12:27:552
1527050991813,3cyclictest1598337-21idleruntime-cro08:20:002
152705099178,7cyclictest1803525-21tr11:47:552
152705099178,7cyclictest1640531-21tr09:02:552
1527050991713,2cyclictest0-21swapper/208:23:012
1527050991713,2cyclictest0-21swapper/207:23:052
1527050991712,3cyclictest0-21swapper/209:42:572
1527050991712,3cyclictest0-21swapper/209:22:522
1527050991712,3cyclictest0-21swapper/207:13:052
152705099167,7cyclictest1794125-21cut11:37:552
152705099166,8cyclictest1684029-21sed09:47:542
152705099166,8cyclictest1609638-21cut08:32:542
1527050991611,3cyclictest0-21swapper/210:42:552
1527050991611,3cyclictest0-21swapper/209:52:512
1527050991611,3cyclictest0-21swapper/208:27:552
1527050991611,3cyclictest0-21swapper/208:12:512
152705099161,11cyclictest1733015-21apt-get10:37:482
1527050991512,2cyclictest0-21swapper/207:42:442
1527050991512,2cyclictest0-21swapper/207:42:442
1527050991512,2cyclictest0-21swapper/207:36:152
1527050991511,2cyclictest0-21swapper/210:32:492
1527050991511,2cyclictest0-21swapper/210:22:552
1527050991510,3cyclictest0-21swapper/207:47:562
16448952145,5sleep30-21swapper/309:07:563
15898412145,5sleep30-21swapper/308:12:553
15579282143,8sleep30-21swapper/307:38:013
152705099146,6cyclictest1822320-21cut12:07:492
152705099142,9cyclictest1698994-21ps10:02:562
18318342132,6sleep30-21swapper/312:15:023
17812572134,6sleep30-21swapper/311:23:023
17712012132,7sleep30-21swapper/311:12:593
17664112132,7sleep30-21swapper/311:08:013
16736932132,6sleep30-21swapper/309:37:533
15492182132,7sleep30-21swapper/307:32:513
15441142136,4sleep30-21swapper/307:27:173
15319282132,6sleep30-21swapper/307:15:013
18563942122,5sleep30-21swapper/312:40:013
18505952122,6sleep30-21swapper/312:32:593
18411312122,6sleep30-21swapper/312:23:043
18264302122,6sleep30-21swapper/312:08:083
18171942122,6sleep30-21swapper/312:01:333
18069022122,6sleep30-21swapper/311:50:023
17973042122,6sleep30-21swapper/311:42:483
17918732122,5sleep30-21swapper/311:35:013
17724952122,6sleep30-21swapper/311:17:003
17583302122,6sleep30-21swapper/311:02:553
17563522122,6sleep30-21swapper/310:57:583
17423322122,6sleep30-21swapper/310:43:253
17275872122,5sleep30-21swapper/310:30:013
17158932122,6sleep30-21swapper/310:17:583
17034572122,6sleep30-21swapper/310:07:553
16930962122,6sleep30-21swapper/309:57:473
16877222122,5sleep30-21swapper/309:50:013
16831672122,7sleep30-21swapper/309:47:243
16787912122,6sleep30-21swapper/309:42:553
16721002122,6sleep30-21swapper/309:33:003
16638952122,6sleep30-21swapper/309:27:543
16575462122,6sleep30-21swapper/309:18:073
16393032123,5sleep30-21swapper/309:02:553
16338532122,6sleep30-21swapper/308:57:533
16287872122,6sleep30-21swapper/308:52:523
16235982121,6sleep30-21swapper/308:47:503
16188782123,5sleep30-21swapper/308:42:523
16119462122,6sleep30-21swapper/308:32:573
16040912122,6sleep30-21swapper/308:27:523
15983882122,6sleep30-21swapper/308:20:013
15879902122,6sleep30-21swapper/308:08:063
15734852122,5sleep30-21swapper/307:55:023
15733232122,6sleep30-21swapper/307:53:263
15586822122,5sleep30-21swapper/307:40:023
15586822122,5sleep30-21swapper/307:40:013
15395552122,6sleep30-21swapper/307:22:523
18416032112,5sleep30-21swapper/312:25:013
18269812112,6sleep30-21swapper/312:10:283
18054352112,5sleep30-21swapper/311:47:573
17871832112,6sleep30-21swapper/311:30:293
17824252112,5sleep30-21swapper/311:27:473
17476422112,6sleep30-21swapper/310:50:323
17426832112,5sleep30-21swapper/310:45:023
17329272113,5sleep30-21swapper/310:37:003
17228602113,5sleep30-21swapper/310:25:053
17190242112,5sleep30-21swapper/310:22:553
17080352112,6sleep30-21swapper/310:11:003
17018902112,5sleep30-21swapper/310:03:053
16482502112,6sleep30-21swapper/309:12:343
16134402112,5sleep30-21swapper/308:35:023
15937722112,6sleep30-21swapper/308:16:363
15307342112,5sleep30-21swapper/307:12:573
16582542102,5sleep30-21swapper/309:20:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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