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2026-05-04 - 15:30

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.
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 the 100 highest latencies:
System rack2slot7s.osadl.org (updated Mon May 04, 2026 12:43:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4113037996044,13cyclictest93497-21kernelversion12:05:410
4113039995545,6cyclictest4157103-21systemd-run09:20:022
4113039995545,6cyclictest4157103-21systemd-run09:20:022
4113037995344,5cyclictest8976-21cron10:20:010
4113039995243,5cyclictest4187385-21cat10:00:032
4113039995243,5cyclictest4187385-21cat10:00:032
4113039995224,25cyclictest4152676-21sh09:14:212
4113038995243,6cyclictest104433-21cron12:20:011
4113039995130,17cyclictest4162930-21unixbench_multi09:25:592
411303799499,32cyclictest58139-21ssh11:20:530
4113039994842,3cyclictest0-21swapper/211:35:542
4113039994839,6cyclictest64726-21systemd-run11:30:012
4113039994838,5cyclictest36861-21systemd-run10:55:012
4113039994837,7cyclictest4180693-21/usr/sbin/munin09:50:472
4113039994730,13cyclictest0-21swapper/211:20:522
4113039994637,6cyclictest0-21swapper/211:05:512
4113037994627,10cyclictest12350irq/32-eth009:10:480
411303999453,8cyclictest81960-21ssh11:50:542
4113039994537,5cyclictest37535-21aten_r2power_vo10:55:382
4113039994534,7cyclictest420-21avahi-daemon12:12:132
4113038994537,5cyclictest6633-21switchtime10:15:581
4113038994535,6cyclictest120324-21grep12:40:011
411303999442,13cyclictest3304446-21cups-browsed11:10:482
4113038994433,5cyclictest0-21swapper/109:25:461
4113039994328,11cyclictest0-21swapper/209:40:012
4113039994326,14cyclictest0-21swapper/210:10:562
4113038994335,5cyclictest4153027-21cron09:15:011
4113038994335,4cyclictest1051-21mta-sts-daemon11:15:281
411303899432,28cyclictest77844-21ssh11:45:481
4113037994335,5cyclictest421-21dbus-daemon07:40:010
4113037994333,6cyclictest2294-21ssh10:10:480
411303999426,14cyclictest428-21mta-sts-daemon08:55:452
4113039994229,9cyclictest54440-21switchtime11:16:012
411303999422,17cyclictest42151-21ssh11:00:492
4113038994236,3cyclictest0-21swapper/110:05:591
4113038994232,7cyclictest4149036-21sh09:10:011
4113037994216,20cyclictest74037-21ssh11:40:560
411303999414,19cyclictest3304446-21cups-browsed09:30:452
411303999413,10cyclictest4130385-21ntpq08:05:462
411303999412,8cyclictest113211-21df12:30:392
4113039994122,15cyclictest76715-21latency_hist11:45:022
4113038994134,4cyclictest84539-21cron11:55:011
4113038994131,7cyclictest261-21systemd-journal10:26:201
411303899412,31cyclictest50140-21ssh11:10:501
411303999403,8cyclictest14334-21ntpq10:25:512
411303999403,11cyclictest101772-21ssh12:15:492
411303999403,10cyclictest18220-21ssh10:30:472
4113039994024,12cyclictest4131037-21kworker/u8:0-xprtiod08:20:002
411303999402,10cyclictest89827-21ssh12:00:482
411303999402,10cyclictest89827-21ssh12:00:482
4113039994019,18cyclictest439-21systemd-logind07:50:012
4113039994018,19cyclictest0-21swapper/212:20:492
4113039994018,19cyclictest0-21swapper/212:20:492
411303999401,15cyclictest30237-21ssh10:45:502
411303999401,14cyclictest112406-21awk12:30:002
4113038994029,7cyclictest420-21avahi-daemon12:00:491
4113038994029,7cyclictest420-21avahi-daemon12:00:491
411303999398,5cyclictest4142380-21sshd08:45:472
411303999393,12cyclictest3304441-21cupsd08:40:482
411303999392,9cyclictest65960-21ssh11:30:482
4113039993929,6cyclictest0-21swapper/208:00:012
411303999392,12cyclictest439-21systemd-logind07:30:012
4113039993917,17cyclictest0-21swapper/210:25:022
4113039993914,5cyclictest0-21swapper/211:55:402
4113039993914,22cyclictest26615-21timerandwakeup10:41:002
4113038993931,3cyclictest0-21swapper/109:20:591
411303899392,27cyclictest3304446-21cups-browsed08:15:531
4113037993932,4cyclictest4189075-21head10:01:000
411303999383,10cyclictest4188454-21ssh10:00:482
4113039993829,6cyclictest4117558-21systemd-run07:25:012
4113039993829,3cyclictest0-21swapper/210:15:402
411303999382,25cyclictest4173740-21ssh09:40:482
411303999382,16cyclictest78007-21ssh11:45:542
4113039993819,16cyclictest4131037-21kworker/u8:0-xprtiod08:10:552
4113039993814,2cyclictest0-21swapper/210:05:512
411303999381,17cyclictest4158390-21ssh09:20:492
411303899384,29cyclictest105716-21ssh12:20:471
411303899384,29cyclictest105716-21ssh12:20:471
4113038993833,2cyclictest0-21swapper/109:20:011
4113038993833,2cyclictest0-21swapper/109:20:011
4113038993830,5cyclictest4180039-21sh09:50:371
4113038993829,5cyclictest97510-21kernelversion12:10:421
4113037993832,4cyclictest14358-21ssh10:25:520
4113037993831,4cyclictest261-21systemd-journal10:55:470
4113037993831,3cyclictest0-21swapper/009:50:470
4113037993827,4cyclictest4192085-21kernelversion10:05:460
4113037993817,14cyclictest151ktimers/009:20:500
411303999376,7cyclictest4125507-21/usr/sbin/munin07:50:382
411303999373,8cyclictest93730-21ntpq12:05:442
411303999372,15cyclictest4143919-21ntpq08:50:462
411303999371,16cyclictest22241-21ssh10:35:492
4113038993731,3cyclictest0-21swapper/110:10:491
4113038993729,5cyclictest1-21systemd10:45:011
4113038993729,4cyclictest0-21swapper/107:55:461
4113038993725,9cyclictest4168897-21ssh09:35:021
4113037993726,8cyclictest119188-21sshd12:37:470
4113037993723,8cyclictest85955-21sh11:55:530
411303799372,28cyclictest46214-21ssh11:05:530
411303799371,28cyclictest151ktimers/008:40:490
411303999367,8cyclictest421-21dbus-daemon07:40:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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