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2025-11-18 - 14:50

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 100 highest latencies:
System rack2slot7s.osadl.org (updated Tue Nov 18, 2025 12:39:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3769704995445,6cyclictest422-21dbus-daemon10:20:022
3769704995445,6cyclictest422-21dbus-daemon10:20:022
3769704995434,15cyclictest0-21swapper/211:49:152
3769704995430,21cyclictest3908441-21cron11:45:012
3769704995425,26cyclictest1-21systemd12:14:022
3769704995334,9cyclictest3844921-21ssh10:09:132
3769704995325,7cyclictest453-21systemd-logind12:35:012
3769704995324,6cyclictest1-21systemd09:15:022
376970499532,21cyclictest3815244-21ssh09:24:122
376970499532,21cyclictest3815244-21ssh09:24:122
3769704995224,5cyclictest3901702-21idleruntime-cro11:35:012
376970499521,29cyclictest3891780-21tr11:20:012
3769704995027,4cyclictest3905057-21sh11:40:012
376970499492,24cyclictest3818283-21ssh09:29:102
3769704994827,4cyclictest3877334-21aten2.4-expect10:59:022
3769704994824,4cyclictest3835530-21idleruntime-cro09:55:012
376970499467,31cyclictest3931595-21ssh12:19:182
3769704994538,4cyclictest0-21swapper/207:40:012
3769704994537,5cyclictest3865619-21ssh10:40:012
376970499444,12cyclictest3887465-21ssh11:14:092
376970499444,12cyclictest3887465-21ssh11:14:092
376970499442,20cyclictest3947554-21sh12:39:182
3769704994234,5cyclictest422-21dbus-daemon07:45:022
3769704994232,6cyclictest3796714-21systemd-run08:40:012
3769704994132,5cyclictest3924955-21ssh12:10:012
3769703994129,4cyclictest171rcu_preempt09:33:511
3769703994120,8cyclictest959-21mta-sts-daemon08:15:161
3769704994032,5cyclictest1-21systemd08:35:012
3769704994032,5cyclictest1-21systemd08:35:012
3769704994031,5cyclictest0-21swapper/211:29:162
3769703994034,3cyclictest0-21swapper/107:20:011
3769702994034,4cyclictest3774217-21systemd-run07:25:010
3769703993930,6cyclictest3825611-21systemd-run09:40:011
3769702993932,4cyclictest3822208-21unixbench-2d09:34:260
3769702993929,7cyclictest3875355-21cron10:55:010
3769702993915,14cyclictest0-21swapper/011:05:020
3769702993915,14cyclictest0-21swapper/011:05:020
3769702993914,18cyclictest3851522-21ssh10:19:200
3769702993914,18cyclictest3851522-21ssh10:19:200
3769704993827,6cyclictest0-21swapper/209:59:102
376970499382,29cyclictest3861301-21ssh10:34:092
3769703993832,3cyclictest0-21swapper/110:14:171
3769703993830,5cyclictest1-21systemd12:30:021
3769702993831,5cyclictest3819229-21systemctl09:30:010
3769702993827,8cyclictest0-21swapper/010:45:020
3769704993729,5cyclictest433-21polkitd09:49:362
3769704993717,16cyclictest2942247-21cups-browsed10:47:352
3769703993728,6cyclictest266-21systemd-journal12:05:011
3769703993726,9cyclictest3914364-21needreboot11:54:171
3769703993711,6cyclictest28-21ksoftirqd/112:00:011
3769702993730,4cyclictest3784945-21kworker/u8:8-rpciod09:45:020
3769702993728,7cyclictest3796679-21/usr/sbin/munin08:40:010
3769702993727,7cyclictest3809546-21munin-plugin-st09:15:010
3769702993723,12cyclictest3915293-21munin-plugin-st11:55:010
3769702993712,14cyclictest14-21ksoftirqd/008:04:140
3769704993631,3cyclictest3826388-21kworker/u8:1-writeback10:05:022
3769704993630,3cyclictest0-21swapper/209:05:012
3769704993627,6cyclictest3892905-21sshd11:22:302
3769703993628,5cyclictest3786229-21latency_hist08:05:021
3769703993627,6cyclictest2942247-21cups-browsed12:21:531
3769703993626,6cyclictest3910607-21fschecks_count11:49:061
3769702993629,4cyclictest3944456-21systemd-run12:35:020
3769702993627,5cyclictest151ktimers/011:59:140
3769702993626,7cyclictest3900804-21ntp_offset11:34:110
3769702993610,5cyclictest14-21ksoftirqd/011:44:280
376970499357,23cyclictest3797603-21sshd08:44:302
3769704993527,5cyclictest3914219-21latency11:54:152
3769704993527,5cyclictest3822537-21grep09:35:012
376970499352,27cyclictest3828294-21grep09:44:202
376970499352,25cyclictest657-21snmpd12:04:202
3769703993529,3cyclictest0-21swapper/110:49:131
3769703993528,4cyclictest3925010-21latency_hist12:10:021
3769703993527,5cyclictest3947696-21rm12:39:221
376970399351,28cyclictest3818426-21sh09:29:161
376970299355,23cyclictest3887528-21sh11:14:110
376970299355,23cyclictest3887528-21sh11:14:110
3769702993526,7cyclictest3835527-21munin-plugin-st09:55:010
3769702993514,5cyclictest14-21ksoftirqd/010:04:130
3769702993513,4cyclictest14-21ksoftirqd/012:14:170
3769702993512,5cyclictest14-21ksoftirqd/011:19:420
3769702993512,11cyclictest14-21ksoftirqd/010:55:140
3769704993428,3cyclictest0-21swapper/210:24:072
3769704993426,5cyclictest2942247-21cups-browsed08:24:052
3769704993426,4cyclictest0-21swapper/210:44:192
376970499342,25cyclictest3939488-21ssh12:29:132
376970499342,24cyclictest3824793-21ssh09:39:172
3769703993427,3cyclictest0-21swapper/112:15:011
3769703993427,3cyclictest0-21swapper/109:13:591
3769703993426,5cyclictest3861881-21unixbench-2d10:34:221
3769703993425,7cyclictest3771203-21sh07:15:021
3769703993420,3cyclictest171rcu_preempt08:48:521
3769703993415,3cyclictest171rcu_preempt09:44:101
3769702993429,2cyclictest0-21swapper/010:00:010
3769702993428,2cyclictest0-21swapper/007:40:010
3769702993426,6cyclictest3885380-21wc11:10:020
3769702993426,6cyclictest3885380-21wc11:10:020
3769702993413,5cyclictest14-21ksoftirqd/009:49:080
3769702993412,5cyclictest14-21ksoftirqd/012:39:120
3769702993412,5cyclictest14-21ksoftirqd/012:09:150
3769702993412,5cyclictest14-21ksoftirqd/010:46:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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