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2026-05-30 - 19:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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 rackbslot5s.osadl.org (updated Sat May 30, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2789546995546,5cyclictest2862095-21unixbench_multi10:35:271
2789542995243,5cyclictest2903903-21cron12:40:000
2789546995041,6cyclictest208-21systemd-logind07:15:111
2789546994817,10cyclictest2804992-21sed07:50:271
2789554994536,6cyclictest2800324-21sendmail07:40:013
2789546994435,4cyclictest2893685-21munin-run12:10:011
2789546994326,12cyclictest2839157-21/usr/sbin/munin09:30:201
2789542994335,5cyclictest2810504-21grep08:05:270
2789554994226,12cyclictest391ktimers/311:05:143
2789550994234,5cyclictest2898794-21cron12:25:002
2789550994135,4cyclictest2862251-21kworker/u8:1+events_unbound10:51:022
2789546994132,5cyclictest2814620-21apt-get08:20:121
2789546994130,7cyclictest2841410-21grep09:35:261
2789546994129,9cyclictest2807799-21apt-get08:00:131
2789546994121,16cyclictest2871521-21apt-get11:05:051
2789554994030,6cyclictest2876416-21idleruntime-cro11:20:003
2789550994030,6cyclictest0-21swapper/210:40:002
2789546994029,6cyclictest2809502-21apt-get08:05:141
2789546994028,9cyclictest2868879-21/usr/sbin/munin10:55:261
2789546994027,9cyclictest2836002-21/usr/sbin/munin09:20:251
2789546994026,11cyclictest2879653-21cron11:28:011
2789546994022,3cyclictest2842690-21ntp_states09:40:211
2789542994029,8cyclictest2808848-21grep08:00:260
2789554993930,5cyclictest2829915-21apt-key09:05:013
2789554993930,5cyclictest2829915-21apt-key09:05:013
2789550993932,4cyclictest2873008-21idleruntime-cro11:10:002
2789550993931,4cyclictest0-21swapper/208:40:002
2789550993928,8cyclictest311ktimers/209:00:112
2789550993928,8cyclictest311ktimers/209:00:112
2789546993931,4cyclictest0-21swapper/111:30:181
2789546993929,6cyclictest2833587-21apt-get09:15:141
2789546993927,9cyclictest2831883-21apt-get09:10:141
2789546993927,8cyclictest2818702-21/usr/sbin/munin08:30:231
2789546993926,10cyclictest2864941-21/usr/sbin/munin10:45:171
2789546993924,11cyclictest2837134-21/usr/sbin/munin09:25:151
2789542993929,6cyclictest0-21swapper/009:00:010
2789542993929,6cyclictest0-21swapper/009:00:000
2789554993828,6cyclictest0-21swapper/312:35:003
2789550993828,6cyclictest0-21swapper/209:55:002
2789550993812,6cyclictest32-21ksoftirqd/211:30:002
2789546993828,6cyclictest2797130-21apt-get07:30:131
2789546993827,8cyclictest2902997-21/usr/sbin/munin12:35:201
2789546993827,8cyclictest2812191-21grep08:10:261
2789546993827,7cyclictest2844153-21/usr/sbin/munin09:45:161
2789546993827,7cyclictest2830871-21/usr/sbin/munin09:05:231
2789546993826,9cyclictest2895206-21cron12:13:011
2789546993826,7cyclictest2901481-21/usr/sbin/munin12:30:231
2789546993825,10cyclictest2821889-21memory08:40:181
2789554993726,7cyclictest2821213-21sendmail08:40:003
2789554993725,7cyclictest0-21swapper/308:25:243
2789550993727,6cyclictest0-21swapper/210:40:242
2789550993726,6cyclictest0-21swapper/210:30:232
2789550993725,7cyclictest0-21swapper/211:35:162
2789546993730,4cyclictest2850861-21apt-get10:05:141
2789546993730,3cyclictest2798832-21apt-get07:35:121
2789546993729,4cyclictest2869621-21apt-get11:00:131
2789546993729,4cyclictest2869621-21apt-get11:00:121
2789546993728,6cyclictest2899036-21apt-get12:25:131
2789546993727,7cyclictest2896365-21/usr/sbin/munin12:15:221
2789546993727,7cyclictest2891577-21/usr/sbin/munin12:00:251
2789546993727,7cyclictest2874934-21apt-get11:15:111
2789546993727,7cyclictest2794863-21cron07:21:011
2789546993726,8cyclictest2888813-21/usr/sbin/munin11:55:151
2789546993726,8cyclictest2888813-21/usr/sbin/munin11:55:151
2789546993726,8cyclictest2856823-21/usr/sbin/munin10:20:271
2789546993726,8cyclictest2847551-21/usr/sbin/munin09:55:141
2789546993726,7cyclictest2883237-21idleruntime-cro11:40:001
2789546993725,9cyclictest2826056-21cron08:52:001
2789546993725,9cyclictest2819723-21apt-get08:35:131
2789546993725,8cyclictest2874140-21/usr/sbin/munin11:10:241
2789546993724,9cyclictest2887411-21/usr/sbin/munin11:50:221
2789546993724,9cyclictest2887411-21/usr/sbin/munin11:50:211
2789546993724,8cyclictest2852999-21/usr/sbin/munin10:10:211
2789546993724,7cyclictest2845740-21apt-get09:50:131
2789542993729,5cyclictest2883221-21cron11:40:010
2789542993724,10cyclictest438-21cron08:30:000
2789550993627,6cyclictest0-21swapper/210:45:152
2789550993625,7cyclictest0-21swapper/207:10:272
2789550993624,7cyclictest0-21swapper/212:05:242
2789546993630,3cyclictest2883477-21apt-get11:40:121
2789546993629,4cyclictest2789713-21apt-get07:10:141
2789546993628,5cyclictest2816321-21apt-get08:25:131
2789546993628,5cyclictest2795432-21apt-get07:25:131
2789546993628,4cyclictest0-21swapper/107:55:161
2789546993627,6cyclictest2885178-21apt-get11:45:111
2789546993627,5cyclictest2876657-21apt-get11:20:111
2789546993626,7cyclictest2860009-21/usr/sbin/munin10:30:211
2789546993626,7cyclictest2829640-21cron09:04:001
2789546993626,7cyclictest2829640-21cron09:04:001
2789546993624,9cyclictest2867496-21cron10:53:001
278954299366,5cyclictest131rcu_preempt11:05:150
2789542993629,4cyclictest0-21swapper/011:45:130
2789542993627,5cyclictest2796449-21grep07:25:260
2789554993527,4cyclictest0-21swapper/311:30:003
2789554993527,4cyclictest0-21swapper/307:25:133
2789554993524,7cyclictest2867247-21grep10:50:263
2789550993527,4cyclictest0-21swapper/212:00:002
2789550993527,4cyclictest0-21swapper/211:59:592
2789550993527,4cyclictest0-21swapper/208:10:372
2789550993525,6cyclictest0-21swapper/212:00:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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