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2026-01-11 - 18:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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.

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 the 376 highest latencies:
System rack2slot7s.osadl.org (updated Sun Jan 11, 2026 07:55:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3390300996641,21cyclictest4153158-21sh06:08:121
3390300996641,21cyclictest4153158-21sh06:08:121
3390298996658,6cyclictest0-21swapper/005:49:580
3390304996456,5cyclictest3925-21tee06:10:012
3390304996456,5cyclictest3925-21tee06:10:012
3390298996231,26cyclictest3677-21grep06:10:000
3390298996231,26cyclictest3677-21grep06:10:000
3390298995840,15cyclictest3702272-21fstime05:58:170
3390298995237,12cyclictest81634-21munin-run06:20:010
3390304995142,6cyclictest86100-21latency_hist06:35:022
3390300995137,10cyclictest3646302-21sh05:41:251
3390298995135,13cyclictest15443-21wc06:10:290
3390304995040,6cyclictest11018-21sh06:10:192
3390304994840,5cyclictest3699172-21execl05:50:022
3390304994840,5cyclictest3685093-21multi.sh05:43:042
3390300994841,5cyclictest4113794-21syscall06:05:011
3390300994841,5cyclictest4113794-21syscall06:05:011
3390300994841,4cyclictest6469-21kworker/u8:10-xprtiod06:12:321
3390298994739,5cyclictest3631111-21sh05:40:480
3390298994732,12cyclictest3397960-21munin-run05:30:010
3390300994640,3cyclictest0-21swapper/106:25:021
3390300994640,3cyclictest0-21swapper/106:25:021
3390300994636,7cyclictest564-21dbus-daemon06:30:011
3390298994428,4cyclictest84605-21sendmail_mailqu06:30:010
3390298994417,5cyclictest0-21swapper/006:39:580
3390300994336,4cyclictest81707-21systemd-run06:20:021
3390304994236,3cyclictest0-21swapper/205:15:022
3390304994235,4cyclictest3616971-21od05:40:012
3390304994235,4cyclictest3616971-21od05:40:012
3390304994232,6cyclictest0-21swapper/205:34:592
3390304994133,5cyclictest3397953-21idleruntime-cro05:30:012
3390298994133,5cyclictest3578513-21spawn05:35:000
3390304994033,3cyclictest0-21swapper/205:55:012
3390304994030,7cyclictest564-21dbus-daemon05:25:012
3390300994034,3cyclictest0-21swapper/105:40:011
3390300994034,3cyclictest0-21swapper/105:40:011
3390298994033,4cyclictest83054-21munin-run06:25:010
3390298994033,4cyclictest83054-21munin-run06:25:010
3390304993931,4cyclictest0-21swapper/205:20:012
3390304993929,7cyclictest4097093-21spawn06:04:252
3390304993929,7cyclictest4097093-21spawn06:04:252
3390300993931,5cyclictest3700679-21Run05:52:031
3390300993931,5cyclictest3396427-21cron05:25:011
3390300993930,6cyclictest582-21systemd-logind05:15:021
3390300993930,5cyclictest0-21swapper/105:49:591
3390298993932,4cyclictest3704127-21Run06:02:260
3390298993932,4cyclictest3704127-21Run06:02:260
3390304993826,4cyclictest0-21swapper/205:56:592
3390300993830,5cyclictest3577768-21spawn05:34:591
3390300993830,5cyclictest0-21swapper/106:40:011
3390298993830,4cyclictest0-21swapper/005:55:040
3390304993730,4cyclictest84076-21fschecks_count06:29:492
3390298993728,6cyclictest3394732-21needreboot05:19:520
3390300993628,5cyclictest3703133-21basename06:00:011
3390298993629,5cyclictest3617066-21sh05:40:010
3390298993629,5cyclictest3617066-21sh05:40:010
3390304993428,3cyclictest0-21swapper/205:05:012
3390304993325,5cyclictest81691-21systemd-run06:20:012
339030499332,23cyclictest83054-21munin-run06:25:012
339030499332,23cyclictest83054-21munin-run06:25:012
3390300993326,4cyclictest85916-21munin-run06:35:001
339030099331,29cyclictest3397867-21pipe05:30:011
3390300993228,2cyclictest0-21swapper/105:19:531
3390298993014,13cyclictest85902-21cron06:35:000
3390298992922,5cyclictest57-21kcompactd005:24:580
3390300992822,4cyclictest0-21swapper/105:10:021
3390298992819,7cyclictest3393065-21ntp_kernel_err05:14:540
3390298992814,10cyclictest3390316-21/usr/sbin/munin05:05:010
3390304992721,3cyclictest0-21swapper/206:40:012
339029899271,23cyclictest3391297-21fschecks_time05:09:480
3390300992619,4cyclictest3390381-21latency_hist05:05:021
3390304992419,3cyclictest1168-21mta-sts-daemon05:10:002
339030599183,8cyclictest0-21swapper/306:06:263
339030599183,8cyclictest0-21swapper/306:06:263
339030599173,8cyclictest0-21swapper/306:25:013
339030599173,8cyclictest0-21swapper/306:25:013
339030599172,9cyclictest0-21swapper/305:49:563
339030599163,9cyclictest0-21swapper/305:30:013
339030599163,7cyclictest0-21swapper/306:00:383
339030599163,7cyclictest0-21swapper/306:00:383
339030599161,6cyclictest0-21swapper/305:14:563
339030599153,8cyclictest0-21swapper/306:10:083
339030599153,8cyclictest0-21swapper/305:57:383
339030599153,8cyclictest0-21swapper/305:43:033
339030599152,8cyclictest0-21swapper/306:30:003
339030599152,8cyclictest0-21swapper/305:55:033
339030599152,6cyclictest0-21swapper/306:19:563
339030599151,6cyclictest0-21swapper/305:09:553
339030599143,5cyclictest0-21swapper/305:22:143
339030599142,8cyclictest0-21swapper/305:35:013
339030599142,7cyclictest0-21swapper/306:35:003
339030599111,7cyclictest0-21swapper/305:37:393
339030599111,7cyclictest0-21swapper/305:37:393
339030599111,6cyclictest0-21swapper/305:20:023
339030599101,4cyclictest0-21swapper/305:05:023
33903059991,5cyclictest0-21swapper/306:40:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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