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2026-03-14 - 06:21

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 Sat Mar 14, 2026 00:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811981212355,62sleep30-21swapper/33
81684128959,12sleep20-21swapper/22
81672127860,12sleep10-21swapper/11
81693127759,13sleep00-21swapper/00
81709799248,13cyclictest0-21swapper/33
817097992421,1cyclictest0-21swapper/33
817097992410,12cyclictest0-21swapper/33
817097992410,12cyclictest0-21swapper/33
81709799238,12cyclictest0-21swapper/33
817097992320,1cyclictest0-21swapper/33
81709799227,13cyclictest0-21swapper/33
81709799223,12cyclictest1080004-21taskset3
817097992220,1cyclictest0-21swapper/33
817097992219,1cyclictest0-21swapper/33
817097992219,1cyclictest0-21swapper/33
817097992218,2cyclictest0-21swapper/33
817097992218,2cyclictest0-21swapper/33
817097992210,8cyclictest991091-21chrt3
817097992119,1cyclictest0-21swapper/33
817097992119,1cyclictest0-21swapper/33
817097992119,1cyclictest0-21swapper/33
817097992118,1cyclictest0-21swapper/33
817097992117,2cyclictest0-21swapper/33
817097992117,2cyclictest0-21swapper/33
817097992117,2cyclictest0-21swapper/33
817097992117,1cyclictest0-21swapper/33
81709799211,16cyclictest956820-21taskset3
81709799211,15cyclictest0-21swapper/33
81709799210,1cyclictest0-21swapper/33
81709799210,18cyclictest1096565-21chrt3
13036592211,7sleep21303719-21ntpq2
817097992017,2cyclictest0-21swapper/33
817097992017,1cyclictest0-21swapper/33
817097992017,1cyclictest0-21swapper/33
817097992017,1cyclictest0-21swapper/33
817097992017,1cyclictest0-21swapper/33
817097992010,7cyclictest0-21swapper/33
81709799196,2cyclictest0-21swapper/33
81709799195,2cyclictest1105522-21taskset3
817097991916,1cyclictest0-21swapper/33
817097991916,1cyclictest0-21swapper/33
817097991916,1cyclictest0-21swapper/33
817097991914,3cyclictest0-21swapper/33
81709799191,14cyclictest0-21swapper/33
817097991910,6cyclictest856978-21chrt3
81709799190,8cyclictest1111708-21taskset3
81709799182,13cyclictest0-21swapper/33
817097991815,2cyclictest0-21swapper/33
817097991815,1cyclictest0-21swapper/33
817097991814,2cyclictest0-21swapper/33
81709799181,14cyclictest0-21swapper/33
81709799181,14cyclictest0-21swapper/33
81709799181,14cyclictest0-21swapper/33
81709799181,13cyclictest0-21swapper/33
12614452181,3sleep00-21swapper/00
11741832181,13sleep01174197-21ssh0
11258732181,5sleep21127393-21ssh2
9874502171,5sleep2987518-21ntpq2
9797252171,3sleep00-21swapper/00
81709799174,11cyclictest0-21swapper/33
81709799173,11cyclictest0-21swapper/33
817097991714,1cyclictest0-21swapper/33
817097991714,1cyclictest0-21swapper/33
81709799171,14cyclictest0-21swapper/33
81709799170,15cyclictest0-21swapper/33
81709799170,13cyclictest0-21swapper/33
11928442171,5sleep1947826-21diskmemload1
11677212171,5sleep1947826-21diskmemload1
11651862170,3sleep20-21swapper/22
11557342171,3sleep20-21swapper/22
10887862171,9sleep11089014-21df_inode1
10683972171,3sleep00-21swapper/00
9892372161,4sleep1947826-21diskmemload1
9813632161,3sleep1947826-21diskmemload1
817097991613,2cyclictest0-21swapper/33
817097991613,1cyclictest0-21swapper/33
817097991613,1cyclictest0-21swapper/33
817097991613,1cyclictest0-21swapper/33
817097991613,1cyclictest0-21swapper/33
81709799160,13cyclictest0-21swapper/33
81709799160,13cyclictest0-21swapper/33
12196462161,3sleep00-21swapper/00
12024712161,3sleep20-21swapper/22
11999552161,2sleep00-21swapper/00
11020232161,1sleep10-21swapper/11
10455192161,3sleep21045542-21kthreadcore2
10438332160,1sleep20-21swapper/22
8883542151,8sleep172-21kcompactd01
8396672150,3sleep00-21swapper/00
817097991513,1cyclictest0-21swapper/33
817097991513,1cyclictest0-21swapper/33
817097991512,1cyclictest0-21swapper/33
817097991511,2cyclictest0-21swapper/33
81709799150,13cyclictest0-21swapper/33
81709799150,12cyclictest0-21swapper/33
81709799150,12cyclictest0-21swapper/33
12851062151,9sleep11286067-21memory1
12604132151,4sleep21260667-21users2
12550812150,1sleep20-21swapper/22
12550812150,1sleep20-21swapper/22
12540402151,10sleep01254054-21ssh0
12540402151,10sleep01254054-21ssh0
12436932151,2sleep00-21swapper/00
12436932151,2sleep00-21swapper/00
11290182150,3sleep10-21swapper/11
11226682151,2sleep00-21swapper/00
11049472151,2sleep20-21swapper/22
10779812151,9sleep1947826-21diskmemload1
10439162151,3sleep1947826-21diskmemload1
8301942141,3sleep2829682-21apt-get2
8301942141,3sleep2829682-21apt-get2
12713922141,7sleep10-21swapper/11
12435542141,2sleep1171rcu_preempt1
12435542141,2sleep1171rcu_preempt1
12177482141,3sleep21217762-21ssh2
11852272140,2sleep20-21swapper/22
11587932141,2sleep00-21swapper/00
11459602141,8sleep01146026-21modprobe0
11380882140,2sleep00-21swapper/00
10943682141,2sleep20-21swapper/22
10185822141,3sleep10-21swapper/11
9980952131,7sleep2947826-21diskmemload2
9897862130,9sleep0989800-21ssh0
9657502131,8sleep0965930-21expr0
9657502131,8sleep0965930-21expr0
9643652131,8sleep2964377-21ssh2
9625762131,5sleep00-21swapper/00
9541802131,3sleep1954191-21ssh1
9309302131,8sleep0931009-21/usr/sbin/munin0
13058882131,5sleep00-21swapper/00
12989652131,4sleep21298978-21ssh2
12907022131,8sleep1947826-21diskmemload1
12545662131,8sleep11254577-21sh1
12545662131,8sleep11254577-21sh1
12257142131,8sleep11225724-21ssh1
11825582131,3sleep01182569-21ssh0
11758262131,8sleep11175839-21ssh1
11578792131,8sleep1947826-21diskmemload1
11463872130,2sleep20-21swapper/22
10500422130,3sleep1321rcuc/11
8998052121,7sleep1900017-21sh1
8569072121,4sleep2856977-21sort2
13154412121,3sleep10-21swapper/11
13081772121,7sleep01308191-21ssh0
13072802121,3sleep11307287-21ssh1
12982922121,5sleep0947826-21diskmemload0
12798102121,6sleep1947826-21diskmemload1
12793442121,5sleep00-21swapper/00
12360782121,6sleep1947826-21diskmemload1
12037102121,7sleep21204209-21cut2
12005752121,7sleep11200585-21ssh1
11931232121,5sleep00-21swapper/00
11732502120,7sleep2947826-21diskmemload2
11128892121,7sleep0947826-21diskmemload0
11112462121,6sleep2947826-21diskmemload2
10878762121,3sleep2947826-21diskmemload2
10873992121,3sleep01087410-21ssh0
10795772120,4sleep2171rcu_preempt2
10346772120,2sleep00-21swapper/00
10148032120,1sleep20-21swapper/22
9996692111,3sleep1999679-21ssh1
9712162111,5sleep2947826-21diskmemload2
9712162111,5sleep2947826-21diskmemload2
9624332110,6sleep1947826-21diskmemload1
9201962111,5sleep1920243-21ntpq1
9201452111,6sleep0920194-21ntpq0
9144832111,5sleep0914531-21ntpq0
8941882110,1sleep20-21swapper/22
8555282111,5sleep2855617-21ntpq2
8409102111,5sleep2841167-21df_inode2
8395222111,5sleep2839611-21ntpq2
12894032111,3sleep20-21swapper/22
12821322111,5sleep01282400-21df_inode0
12357592111,7sleep01235773-21ssh0
12267692111,2sleep00-21swapper/00
11837872111,6sleep11183798-21ssh1
11663402111,2sleep01166351-21ssh0
11481722110,1sleep10-21swapper/11
11409382111,6sleep11140948-21ssh1
11380702111,5sleep2947826-21diskmemload2
11216262111,4sleep1947826-21diskmemload1
10686682111,4sleep2947826-21diskmemload2
10680492111,4sleep1947826-21diskmemload1
10591422111,5sleep2947826-21diskmemload2
10403832111,5sleep01040447-21ntpq0
10254962111,4sleep20-21swapper/22
10140722111,6sleep01014130-21ntpq0
10069142111,4sleep1947826-21diskmemload1
9974452101,3sleep00-21swapper/00
9717172101,5sleep1947826-21diskmemload1
9717172101,5sleep1947826-21diskmemload1
9539112101,2sleep00-21swapper/00
9535782101,4sleep2947826-21diskmemload2
9468622101,4sleep2946915-21ntp_states2
9320862100,5sleep10-21swapper/11
9307272101,6sleep1321rcuc/11
9092222101,4sleep2909269-21ntpq2
8782182100,5sleep20-21swapper/22
8566282101,2sleep00-21swapper/00
8511052100,2sleep1171rcu_preempt1
8245962101,4sleep0824615-21apt-get0
12808302101,2sleep20-21swapper/22
12725282101,2sleep20-21swapper/22
12615692101,4sleep1947826-21diskmemload1
12441232101,3sleep20-21swapper/22
12441232101,3sleep20-21swapper/22
12257252100,6sleep21225740-21ssh2
12173832101,3sleep10-21swapper/11
12103632100,2sleep00-21swapper/00
12091072101,3sleep1947826-21diskmemload1
11906642100,3sleep20-21swapper/22
11225352101,4sleep2947826-21diskmemload2
11051252101,2sleep00-21swapper/00
10864522100,2sleep10-21swapper/11
10783802101,3sleep00-21swapper/00
10589642101,4sleep00-21swapper/00
10536582101,4sleep11053924-21df1
10515022101,4sleep0947826-21diskmemload0
10313602101,2sleep20-21swapper/22
10070822101,4sleep21007093-21ssh2
10022792102,4sleep01003908-21kthreadcore0
978842291,2sleep2947826-21diskmemload2
942750290,2sleep10-21swapper/11
941579291,4sleep1937436-21/usr/sbin/munin1
941522291,4sleep0941569-21ntpq0
927325291,5sleep2928241-21kthreadcore2
921989291,4sleep2922787-21cut2
914839291,4sleep2914930-21cat2
912053291,4sleep1913836-21cut1
909174291,4sleep1909220-21ntpq1
904923291,3sleep0904594-21apt-get0
899515291,3sleep2899534-21apt-get2
899202290,1sleep00-21swapper/00
883124290,2sleep00-21swapper/00
876934290,4sleep2876974-21ntpq2
867542291,3sleep2867561-21apt-get2
863911291,4sleep0865713-21kthreadcore0
846376290,1sleep20-21swapper/22
841452291,4sleep1842549-21tr1
835840291,4sleep1835974-21head1
828977291,4sleep2829230-21unixbench_multi2
821354291,4sleep2821405-21ld2
821295291,3sleep1821352-21ntpq1
1315652291,2sleep20-21swapper/22
1264439291,2sleep00-21swapper/00
1233415290,2sleep20-21swapper/22
1129870291,2sleep00-21swapper/00
1113001291,3sleep1947826-21diskmemload1
1093720291,5sleep01093734-21ssh0
1027316291,2sleep10-21swapper/11
1015697291,5sleep11015705-21ssh1
937057280,1sleep00-21swapper/00
933089281,4sleep2934797-21kthreadcore2
926278280,2sleep00-21swapper/00
925366281,3sleep1925479-21ntpq1
883547280,2sleep20-21swapper/22
876793281,3sleep1872891-21/usr/sbin/munin1
872387280,1sleep10-21swapper/11
866395281,3sleep1866483-21processes1
862666280,4sleep20-21swapper/22
856486280,1sleep10-21swapper/11
851271280,1sleep00-21swapper/00
828693280,3sleep10-21swapper/11
822335280,1sleep00-21swapper/00
1025074280,2sleep00-21swapper/00
947762270,1sleep00-21swapper/00
921050270,1sleep20-21swapper/22
893862270,1sleep20-21swapper/22
888870270,2sleep00-21swapper/00
856885270,2sleep1856904-21apt-get1
835208270,1sleep10-21swapper/11
835208270,1sleep10-21swapper/11
942311260,1sleep20-21swapper/22
904289260,3sleep00-21swapper/00
899041260,4sleep10-21swapper/11
883243260,1sleep10-21swapper/11
873168261,2sleep00-21swapper/00
861693260,3sleep0861694-21pool-udisksd0
841335261,2sleep00-21swapper/00
830515261,2sleep00-21swapper/00
830515261,2sleep00-21swapper/00
888471250,3sleep00-21swapper/00
888892240,1sleep10-21swapper/11
867708240,1sleep00-21swapper/00
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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