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2026-05-17 - 09:44

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 Sun May 17, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
398090995036,11cyclictest311ktimers/221:45:122
398081994935,10cyclictest121ktimers/019:45:110
398092994836,9cyclictest391ktimers/322:15:133
398092994834,10cyclictest391ktimers/322:05:113
398081994832,12cyclictest121ktimers/023:00:120
398092994739,5cyclictest458290-21sendmail22:00:013
398092994739,5cyclictest458290-21sendmail22:00:003
398090994737,6cyclictest508839-21cut00:25:192
398090994723,7cyclictest131rcu_preempt22:15:112
398081994639,4cyclictest474054-21cron22:45:010
398081994433,7cyclictest399275-21grep19:10:260
398092994230,10cyclictest391ktimers/323:05:113
398092994229,8cyclictest0-21swapper/300:00:003
39809099421,18cyclictest0-21swapper/222:20:122
39809099421,14cyclictest0-21swapper/221:55:122
39809099421,14cyclictest0-21swapper/221:55:122
398092994130,6cyclictest451253-21wc21:40:003
398090994135,3cyclictest433147-21munin-plugin-st20:50:002
398085994132,5cyclictest460215-21munin-plugin-st22:05:001
398081994131,7cyclictest406677-21grep19:30:390
398092994032,5cyclictest506662-21cron00:20:003
398092994032,5cyclictest506662-21cron00:19:593
398085994033,4cyclictest451038-21munin-run21:40:011
398085994028,8cyclictest454436-21grep21:45:251
398085994027,9cyclictest406727-21grep19:30:381
39809299399,11cyclictest417674-21date20:05:013
39809299399,11cyclictest417674-21date20:05:003
398090993928,8cyclictest472350-21cut22:40:002
398085993930,7cyclictest427830-21kworker/u8:1+events_unbound22:48:121
398081993931,5cyclictest513499-21sendmail00:40:010
398092993831,4cyclictest475770-21munin-plugin-st22:50:013
398090993830,6cyclictest493629-21kworker/u8:3+events_unbound00:18:362
398090993830,6cyclictest493629-21kworker/u8:3+events_unbound00:18:362
398090993828,6cyclictest475335-21grep22:45:232
398090993827,7cyclictest408367-21grep19:35:262
398092993725,8cyclictest472362-21sendmail22:40:003
39809099376,4cyclictest131rcu_preempt22:25:152
398081993730,4cyclictest485995-21munin-plugin-st23:20:000
398081993730,4cyclictest485995-21munin-plugin-st23:20:000
398081993724,8cyclictest402029-21idleruntime-cro19:20:000
398092993627,5cyclictest0-21swapper/320:10:003
398090993628,4cyclictest0-21swapper/220:20:162
398090993626,8cyclictest311ktimers/221:30:122
398090993625,7cyclictest446955-21grep21:25:272
398090993625,7cyclictest0-21swapper/219:30:382
398092993527,4cyclictest429727-21cron20:40:003
398092993526,5cyclictest0-21swapper/321:17:583
398092993524,7cyclictest0-21swapper/319:15:263
398090993524,8cyclictest311ktimers/200:30:122
398085993527,4cyclictest0-21swapper/123:30:251
398085993524,7cyclictest0-21swapper/120:40:261
398081993525,6cyclictest0-21swapper/020:00:240
398081993525,6cyclictest0-21swapper/020:00:240
398081993525,6cyclictest0-21swapper/000:05:010
398092993427,4cyclictest422938-21apt-get20:20:143
398092993426,4cyclictest0-21swapper/321:45:173
398092993423,8cyclictest405680-21apt-get19:30:273
398092993422,8cyclictest463393-21grep22:10:243
398092993421,9cyclictest426300-21sshd20:29:553
398092993419,12cyclictest421215-21apt-get20:15:113
398090993426,4cyclictest0-21swapper/223:00:162
398090993424,7cyclictest451030-21apt-get21:40:002
398090993424,7cyclictest438-21cron22:10:012
39809099341,4cyclictest131rcu_preempt20:35:112
398085993427,5cyclictest463651-21kworker/u8:4+events_unbound22:18:091
398085993427,4cyclictest0-21swapper/100:00:011
398085993426,4cyclictest0-21swapper/123:40:161
398081993427,4cyclictest424418-21munin-plugin-st20:25:020
398081993424,6cyclictest0-21swapper/021:15:260
398092993326,3cyclictest493065-21apt-get23:40:133
398092993325,4cyclictest0-21swapper/323:45:253
398092993323,6cyclictest415431-21head19:55:263
398092993322,8cyclictest513312-21cron00:38:013
39809099331,4cyclictest131rcu_preempt21:15:142
398085993326,4cyclictest462109-21latency_hist22:10:001
398085993322,7cyclictest404958-21grep19:25:261
398085993313,8cyclictest131rcu_preempt19:15:141
398081993318,12cyclictest398075-21cyclictest23:05:100
39809299325,9cyclictest398917-21gzip19:10:243
398092993223,4cyclictest0-21swapper/321:30:003
398092993222,7cyclictest427232-21/usr/sbin/munin20:30:243
398092993220,8cyclictest482817-21apt-get23:10:123
398092993220,8cyclictest482817-21apt-get23:10:113
398092993219,10cyclictest497755-21cron23:53:003
398092993219,10cyclictest490164-21/usr/sbin/munin23:30:203
398092993219,10cyclictest478671-21/usr/sbin/munin22:55:253
398092993219,10cyclictest473042-21/usr/sbin/munin22:40:203
398092993219,10cyclictest466312-21/usr/sbin/munin22:20:213
398092993215,8cyclictest0-21swapper/320:45:123
398092993215,14cyclictest447970-21/usr/sbin/munin21:30:133
398092993215,13cyclictest411542-21tr19:45:203
398090993226,4cyclictest493629-21kworker/u8:3+events_unbound23:53:302
398090993226,3cyclictest0-21swapper/223:15:182
398090993226,3cyclictest0-21swapper/223:15:172
398090993221,7cyclictest0-21swapper/219:25:262
398085993224,4cyclictest0-21swapper/120:20:161
398092993124,4cyclictest440619-21apt-get21:10:133
398092993123,4cyclictest433139-21apt-get20:50:063
398092993123,4cyclictest433139-21apt-get20:50:053
398092993121,7cyclictest507262-21/usr/sbin/munin00:20:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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