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2026-07-19 - 03:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #3

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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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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack3slot3s.osadl.org (updated Sun Jul 19, 2026 00:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
650408212054,61sleep30-21swapper/33
65068728857,12sleep20-21swapper/22
65057428454,12sleep10-21swapper/11
65041528459,17sleep00-21swapper/00
9994682270,1sleep0999472-21tr0
65092099251,21cyclictest0-21swapper/33
650920992419,2cyclictest0-21swapper/33
650920992320,1cyclictest0-21swapper/33
65092099228,10cyclictest0-21swapper/33
650920992219,1cyclictest0-21swapper/33
65092099221,17cyclictest0-21swapper/33
650920992117,2cyclictest0-21swapper/33
65092099210,18cyclictest0-21swapper/33
65092099204,3cyclictest969243-21taskset3
650920992016,2cyclictest0-21swapper/33
65092099201,16cyclictest0-21swapper/33
65092099201,16cyclictest0-21swapper/33
65092099201,15cyclictest0-21swapper/33
65092099201,15cyclictest0-21swapper/33
650920992010,7cyclictest0-21swapper/33
7945112191,3sleep2778700-21diskmemload2
650920991916,2cyclictest0-21swapper/33
650920991916,1cyclictest0-21swapper/33
650920991915,2cyclictest0-21swapper/33
650920991915,2cyclictest0-21swapper/33
650920991914,3cyclictest66950irq/132-enp1s0-TxRx-33
650920991912,4cyclictest0-21swapper/33
650920991911,5cyclictest0-21swapper/33
65092099191,15cyclictest0-21swapper/33
65092099191,15cyclictest0-21swapper/33
65092099191,14cyclictest1145105-21taskset3
65092099191,14cyclictest1044354-21taskset3
65092099191,14cyclictest0-21swapper/33
65092099191,14cyclictest0-21swapper/33
65092099182,11cyclictest1137955-21taskset3
650920991815,1cyclictest0-21swapper/33
650920991815,1cyclictest0-21swapper/33
650920991814,2cyclictest0-21swapper/33
650920991813,2cyclictest0-21swapper/33
650920991811,4cyclictest0-21swapper/33
65092099181,14cyclictest0-21swapper/33
65092099181,14cyclictest0-21swapper/33
65092099181,14cyclictest0-21swapper/33
65092099181,13cyclictest0-21swapper/33
65092099180,14cyclictest0-21swapper/33
65092099180,14cyclictest0-21swapper/33
10483972181,12sleep2778700-21diskmemload2
8476732171,11sleep0778700-21diskmemload0
65092099179,5cyclictest0-21swapper/33
65092099176,8cyclictest710556-21turbostat3
65092099176,8cyclictest710556-21turbostat3
650920991714,1cyclictest0-21swapper/33
65092099171,3cyclictest0-21swapper/33
650920991712,3cyclictest0-21swapper/33
65092099171,13cyclictest0-21swapper/33
65092099171,13cyclictest0-21swapper/33
65092099171,13cyclictest0-21swapper/33
65092099171,12cyclictest0-21swapper/33
65092099170,14cyclictest0-21swapper/33
65092099170,14cyclictest0-21swapper/33
11282602171,2sleep20-21swapper/22
9865492160,1sleep20-21swapper/22
9672712161,3sleep10-21swapper/11
9555692160,5sleep1331ktimers/11
8393932161,2sleep00-21swapper/00
8123232160,2sleep10-21swapper/11
7858552160,1sleep20-21swapper/22
7373202165,6sleep0737388-21cut0
65092099161,3cyclictest0-21swapper/33
65092099161,3cyclictest0-21swapper/33
65092099161,3cyclictest0-21swapper/33
650920991613,2cyclictest0-21swapper/33
650920991613,1cyclictest0-21swapper/33
65092099161,12cyclictest0-21swapper/33
65092099160,13cyclictest0-21swapper/33
11446802161,4sleep21144691-21ssh2
11032382161,3sleep10-21swapper/11
9408232151,9sleep0778700-21diskmemload0
8730642153,5sleep1171rcu_preempt1
8551352151,2sleep00-21swapper/00
8477562151,8sleep2778700-21diskmemload2
8472782150,1sleep10-21swapper/11
650920991513,1cyclictest0-21swapper/33
650920991513,1cyclictest0-21swapper/33
650920991513,1cyclictest0-21swapper/33
650920991512,1cyclictest0-21swapper/33
65092099151,12cyclictest0-21swapper/33
65092099150,12cyclictest0-21swapper/33
65092099150,12cyclictest0-21swapper/33
10995812150,2sleep00-21swapper/00
10110292151,5sleep2778700-21diskmemload2
9487082141,9sleep1948803-21tr1
8928322141,8sleep0893225-21kthreadcore0
8290792141,3sleep0778700-21diskmemload0
8290432141,4sleep1829051-21ssh1
6561332140,2sleep00-21swapper/00
650920991411,2cyclictest0-21swapper/33
11279192141,8sleep0778700-21diskmemload0
11169722141,3sleep01116986-21ssh0
10195972140,2sleep10-21swapper/11
10192152141,7sleep0778700-21diskmemload0
9792472131,7sleep0778700-21diskmemload0
9778482131,8sleep2977859-21ssh2
9605682131,6sleep00-21swapper/00
9519032131,8sleep0951916-21sh0
9084762131,6sleep1778700-21diskmemload1
9083392131,8sleep2778700-21diskmemload2
7150022131,4sleep2715195-21cat2
7150022131,4sleep2715195-21cat2
11160332130,6sleep10-21swapper/11
11007122131,7sleep2778700-21diskmemload2
10872762131,7sleep21088842-21cut2
10757612131,8sleep11074857-40find1
10484662130,1sleep00-21swapper/00
10310462131,7sleep2778700-21diskmemload2
10231482131,8sleep11023352-21ssh1
10120912131,8sleep11012102-21ssh1
9705942121,6sleep0970624-21ssh0
9692802121,6sleep2778700-21diskmemload2
9424762121,6sleep1778700-21diskmemload1
9249842120,8sleep20-21swapper/22
9081622120,8sleep0908174-21sh0
8906632121,3sleep1171rcu_preempt1
8841652121,7sleep0885427-21cat0
8713092121,7sleep0871323-21ssh0
8627602120,1sleep10-21swapper/11
8564862121,4sleep10-21swapper/11
8553172121,5sleep20-21swapper/22
8273122120,3sleep2421rcuc/22
8196202121,5sleep2778700-21diskmemload2
8057582121,6sleep0806659-21kthreadcore0
7957422121,7sleep1795750-21ssh1
7271272121,7sleep1727806-21tr1
7055982121,5sleep2705855-21df2
11441952122,4sleep0778700-21diskmemload0
11361602121,6sleep1778700-21diskmemload1
11183202120,8sleep21118334-21ssh2
11085242121,5sleep00-21swapper/00
11017872121,4sleep10-21swapper/11
10732202121,7sleep21073231-21ssh2
10308672120,8sleep01030878-21ssh0
10188812121,7sleep21018893-21ssh2
9885872111,6sleep1989490-21grep1
9668012111,5sleep00-21swapper/00
9274302111,6sleep0927614-21head0
8820542111,3sleep20-21swapper/22
8755612111,7sleep1877085-21cut1
8655222111,4sleep2778700-21diskmemload2
8360772111,4sleep2778700-21diskmemload2
8138172111,4sleep1778700-21diskmemload1
8015952111,2sleep0778700-21diskmemload0
8014732111,2sleep20-21swapper/22
7866332110,7sleep0786647-21ssh0
7684032111,5sleep2768228-21sendmail-msp2
7475612111,3sleep10-21swapper/11
7161302111,4sleep2716333-21diskstats2
6952392111,4sleep1695362-21diskstats1
6793452111,3sleep00-21swapper/00
6626232111,7sleep2662848-21sed2
6516532111,6sleep0652784-21kthreadcore0
11353692110,1sleep00-21swapper/00
11348332111,6sleep21134847-21ssh2
11261352110,7sleep11126146-21ssh1
10717512111,4sleep0778700-21diskmemload0
10565542111,4sleep0778700-21diskmemload0
10390742111,3sleep10-21swapper/11
10053462111,4sleep01005374-21apt-get0
10024702111,4sleep2778700-21diskmemload2
9966512101,5sleep1996680-21apt-get1
9953662101,2sleep00-21swapper/00
9933952101,4sleep2778700-21diskmemload2
9776812100,1sleep10-21swapper/11
9581882101,4sleep2778700-21diskmemload2
9357932100,4sleep20-21swapper/22
9271042101,3sleep10-21swapper/11
9258332101,2sleep10-21swapper/11
9236712100,1sleep00-21swapper/00
9151582101,2sleep00-21swapper/00
9116852101,5sleep2913363-21kthreadcore2
9103272100,6sleep1911684-21cut1
9003272101,2sleep10-21swapper/11
8838582101,4sleep2778700-21diskmemload2
8803892101,2sleep00-21swapper/00
8622292101,3sleep00-21swapper/00
8141272101,4sleep0814350-21hddtemp_smartct0
8117342101,4sleep2778700-21diskmemload2
8033602101,4sleep1778700-21diskmemload1
7850102101,3sleep10-21swapper/11
7632432101,4sleep2763503-21df_inode2
7576892100,1sleep00-21swapper/00
7475672101,4sleep2747821-21df2
7428102101,5sleep2743103-21grep2
7217792101,5sleep0721848-21kernelversion0
7052802101,4sleep1705359-21munin-run1
7003152102,4sleep2700312-21apt-get2
6941082101,5sleep0694327-21/usr/sbin/munin0
6898852101,4sleep2690144-21df_inode2
6846062101,3sleep00-21swapper/00
6688772101,4sleep2668896-21apt-get2
6636582101,2sleep10-21swapper/11
6636342100,1sleep00-21swapper/00
6564792101,5sleep1657379-21kthreadcore1
11381612101,3sleep10-21swapper/11
11033792100,1sleep20-21swapper/22
10938192101,3sleep00-21swapper/00
10934762101,4sleep1778700-21diskmemload1
10836292101,4sleep21083632-21ssh2
10825222101,3sleep0778700-21diskmemload0
10712992100,1sleep10-21swapper/11
10631832101,4sleep0778700-21diskmemload0
10626302101,3sleep1778700-21diskmemload1
10553952100,2sleep10-21swapper/11
10451652100,1sleep11045177-21ssh1
10387572101,4sleep0778700-21diskmemload0
985629291,4sleep1985636-21ssh1
951985290,1sleep20-21swapper/22
934954291,4sleep2934967-21ssh2
898999291,2sleep20-21swapper/22
872001291,2sleep20-21swapper/22
831862291,4sleep1833387-21grep1
793610291,4sleep0106713-21snmpd0
778581290,1sleep00-21swapper/00
752777291,2sleep20-21swapper/22
747872291,4sleep0748080-21if_enp1s00
742274291,4sleep1742280-21cat1
737587291,4sleep2738098-21cut2
726353291,4sleep2726308-21sendmail-msp2
711375290,5sleep0712256-21grep0
711375290,5sleep0712256-21grep0
705565291,3sleep139542-21systemd-journal1
695646291,4sleep0697000-21cut0
680750291,4sleep2682444-21cut2
678305291,4sleep1678470-21cat1
1063162291,2sleep20-21swapper/22
1054731291,3sleep21054741-21ssh2
1031527291,2sleep20-21swapper/22
763220281,2sleep0763239-21apt-get0
736009281,3sleep1736226-21timerwakeupswit1
731801280,2sleep20-21swapper/22
720087281,3sleep1720176-21pmu-power1
716044280,2sleep00-21swapper/00
705564281,3sleep00-21swapper/00
689883281,2sleep10-21swapper/11
684311281,3sleep1684390-21munin-run1
675545281,3sleep0677238-21cut0
778429270,1sleep20-21swapper/22
769008271,2sleep00-21swapper/00
768447271,2sleep10-21swapper/11
757988270,2sleep20-21swapper/22
757372270,1sleep10-21swapper/11
737033270,1sleep10-21swapper/11
736404270,1sleep00-21swapper/00
726127270,1sleep20-21swapper/22
725884270,1sleep10-21swapper/11
712257271,3sleep10-21swapper/11
712257271,3sleep10-21swapper/11
689500270,1sleep10-21swapper/11
674110270,2sleep20-21swapper/22
668865270,1sleep10-21swapper/11
668864270,1sleep00-21swapper/00
664724272,2sleep22359984-21kworker/u16:3-kvfree_rcu_reclaim2
652787271,3sleep1654495-21kthreadcore1
763242260,2sleep10-21swapper/11
762607260,4sleep10-21swapper/11
759250260,3sleep0760931-21grep0
731283260,1sleep00-21swapper/00
700292260,1sleep00-21swapper/00
689313261,2sleep20-21swapper/22
655795260,2sleep20-21swapper/22
773677250,3sleep10-21swapper/11
742552250,1sleep00-21swapper/00
695363250,1sleep20-21swapper/22
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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