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2026-07-24 - 22:59

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 100 highest latencies:
System rack5slot4s.osadl.org (updated Fri Jul 24, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147761099229215,13cyclictest0-21swapper/012:02:520
147761699195190,3cyclictest1772473-21ntpq12:02:512
1477614996461,2cyclictest0-21swapper/112:02:511
15904172590,3sleep10-21swapper/109:02:461
15488362550,4chrt0-21swapper/108:17:571
1477614995345,6cyclictest1519074-21kworker/u8:2+flush-8:008:42:551
1477614994941,6cyclictest1623662-21latency_hist09:35:001
14823172480,4sleep1281rcuc/107:12:571
1477610994838,7cyclictest1698518-21latency_hist10:50:000
1477610994738,6cyclictest278-21systemd-journal12:32:410
1477614994433,7cyclictest278-21systemd-journal09:55:511
1477614994332,7cyclictest278-21systemd-journal12:23:511
1477614994232,7cyclictest1539360-21latency_hist08:10:011
1477616994135,4cyclictest1693455-21gpgv10:45:002
1477614994136,4cyclictest1508856-21kworker/u8:1+flush-8:008:22:541
1477614994035,3cyclictest1578697-21kworker/u8:4+events_unbound08:50:011
1477610994029,8cyclictest1708384-21latency_hist11:00:010
1477616993934,3cyclictest1728231-21gpgv11:20:002
16249002380,3sleep3577-21kworker/3:2-events09:37:433
1477614993831,5cyclictest1708198-21kworker/u8:0+events_unbound11:17:521
1477614993829,7cyclictest278-21systemd-journal07:36:511
1477614993826,8cyclictest278-21systemd-journal09:28:521
1477610993830,6cyclictest1524705-21/usr/sbin/munin07:57:550
1477614993732,4cyclictest1593641-21kworker/u8:2+flush-8:010:03:001
1477614993731,4cyclictest1708198-21kworker/u8:0+events_unbound12:27:551
1477610993732,4cyclictest1508856-21kworker/u8:1+flush-8:008:32:560
1477614993529,4cyclictest1708198-21kworker/u8:0+events_unbound11:22:551
1477614993526,7cyclictest1508856-21kworker/u8:1+events_unbound08:27:511
1477614993429,3cyclictest395-21dbus-daemon08:05:001
1477614993427,5cyclictest1668202-21kworker/u8:3+flush-8:010:52:531
1477614993425,7cyclictest1504211-21latency_hist07:35:001
1477610993424,8cyclictest1529935-21diskstats08:02:440
1477614993329,3cyclictest1508856-21kworker/u8:1+flush-8:007:42:561
1477614993328,4cyclictest1508856-21kworker/u8:1+events_unbound10:17:541
1477614993328,3cyclictest1802808-21kworker/u8:3+flush-8:012:37:571
1477614993328,3cyclictest1688159-21apt-get10:40:001
1477610993327,4cyclictest1593796-21latency_hist09:05:010
1477610993326,5cyclictest1467698-21kworker/u8:0+flush-8:007:22:420
1477610993324,7cyclictest1613558-21apt-get09:25:000
1477614993228,2cyclictest1748906-21cpuspeed_turbos11:42:381
1477614993227,3cyclictest1698300-21unixbench_singl10:47:551
1477614993227,3cyclictest1634634-21irqcore09:47:441
1477614993226,4cyclictest1524283-21latency_hist07:55:011
1477614993226,4cyclictest1519074-21kworker/u8:2+events_unbound08:12:541
1477614993226,4cyclictest1452049-21kworker/u8:2+flush-8:007:27:561
1477610993224,6cyclictest1658286-21latency_hist10:10:020
1477610993221,9cyclictest1622983-21ntpq09:32:500
14734072320,5sleep3451irq_work/307:07:413
1477614993127,3cyclictest1593641-21kworker/u8:2+flush-8:010:42:401
1477614993126,3cyclictest1588899-21systemd-run09:00:001
1477614993126,3cyclictest1508856-21kworker/u8:1+flush-8:010:07:561
1477614993125,4cyclictest1508856-21kworker/u8:1+flush-8:008:32:521
1477614993124,5cyclictest1753394-21kworker/u8:2+events_unbound12:17:391
1477614993122,7cyclictest1598752-21latency_hist09:10:021
1477614993121,7cyclictest1763156-21gpgv11:55:001
1477614993121,7cyclictest1763156-21gpgv11:55:001
1477610993125,4cyclictest1594464-21cpuspeed_turbos09:07:380
1477610993124,5cyclictest1753159-21latency_hist11:45:010
1477616993024,4cyclictest1484994-21aten2_r5power_v07:17:392
1477614993024,5cyclictest1508856-21kworker/u8:1+flush-8:009:52:501
1477614993022,6cyclictest1508856-21kworker/u8:1+flush-8:007:47:511
147761099308,19cyclictest1653373-21kworker/0:0+events10:42:350
147761099301,24cyclictest1529257-21kworker/0:2+events08:26:390
15533042290,5sleep3451irq_work/308:22:483
1477616992924,3cyclictest1788767-21fschecks_time12:22:402
1477614992924,3cyclictest1674047-21cut10:27:401
1477614992923,4cyclictest1593641-21kworker/u8:2+flush-8:011:12:471
1477614992923,3cyclictest0-21swapper/111:40:001
1477614992923,3cyclictest0-21swapper/110:32:381
1477614992922,5cyclictest1718089-21grep11:07:561
147761099295,23cyclictest1477475-21kworker/0:1+events07:42:510
1477610992924,3cyclictest1544281-21cron08:15:000
1477610992923,4cyclictest1603692-21apt09:15:000
1477616992824,2cyclictest1519099-21unixbench_multi07:47:572
1477616992823,3cyclictest0-21swapper/208:00:002
1477616992819,7cyclictest1714160-21fschecks_time11:07:412
1477614992823,4cyclictest1668202-21kworker/u8:3+events_unbound11:30:011
1477614992823,3cyclictest1764320-21irqcore11:57:431
1477614992823,2cyclictest0-21swapper/111:47:421
1477614992823,2cyclictest0-21swapper/111:47:421
1477614992822,4cyclictest1613315-21unixbench_multi09:22:571
147761099285,22cyclictest1653373-21kworker/0:0+events11:52:560
147761099285,22cyclictest1653373-21kworker/0:0+events11:52:550
1477610992824,3cyclictest1607802-21needreboot09:17:470
1477610992821,5cyclictest1519074-21kworker/u8:2+flush-8:008:17:430
1477610992821,5cyclictest1430791-21kworker/u8:3+flush-8:007:47:420
1477616992719,7cyclictest1704163-21fschecks_count10:57:412
1477616992718,7cyclictest1768194-21sendmail12:00:002
1477616992718,7cyclictest1494054-21unixbench_multi07:22:582
1477616992716,9cyclictest1613931-21cat09:25:012
1477614992722,4cyclictest1593641-21kworker/u8:2+flush-8:009:17:501
1477614992722,3cyclictest1629829-21irqrtprio09:42:421
1477614992721,4cyclictest1568750-21unixbench_multi08:37:561
1477614992721,4cyclictest1529026-21unixbench_singl07:57:571
1477614992719,6cyclictest1508856-21kworker/u8:1+flush-8:010:57:561
1477610992723,2cyclictest0-21swapper/010:00:000
1477610992722,3cyclictest1504258-21munin-run07:35:000
1477610992721,4cyclictest1747980-21unixbench_singl11:37:550
1477610992720,5cyclictest1519794-21apt-get07:52:350
1477610992719,6cyclictest1714060-21diskstats11:07:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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