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2026-09-20 - 09:25

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
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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 792 highest latencies:
System rackbslot5s.osadl.org (updated Sun Sep 20, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
435201995539,12cyclictest391ktimers/323:10:133
435198994839,5cyclictest490303-21unixbench_singl21:45:252
435189994836,9cyclictest438-21cron23:50:000
435201994535,6cyclictest532111-21ls23:50:003
435201994535,6cyclictest459587-21cron20:20:013
435198994433,6cyclictest457470-21grep20:10:252
435198994335,4cyclictest0-21swapper/219:40:002
435198994028,8cyclictest500493-21grep22:15:252
435189993931,5cyclictest459595-21auditctl20:20:010
435189993926,10cyclictest121ktimers/022:10:160
435198993821,12cyclictest0-21swapper/220:00:132
435189993831,4cyclictest482225-21idleruntime-cro21:25:010
435189993827,7cyclictest529964-21grep23:40:240
435198993727,6cyclictest0-21swapper/200:40:012
435189993724,9cyclictest474752-21grep21:00:270
435201993628,4cyclictest0-21swapper/322:00:143
435201993627,4cyclictest0-21swapper/321:07:233
435201993625,6cyclictest0-21swapper/319:15:263
435201993623,8cyclictest487318-21auditctl21:40:003
435198993627,3cyclictest0-21swapper/221:05:172
435198993625,8cyclictest526982-21auditctl23:35:012
435198993617,14cyclictest0-21swapper/223:20:132
435198993613,5cyclictest513802-21meminfo22:55:182
435189993628,5cyclictest0-21swapper/021:45:250
435201993528,4cyclictest0-21swapper/319:10:253
435201993527,4cyclictest0-21swapper/319:20:253
435198993528,4cyclictest532337-21apt-get23:50:122
435198993527,4cyclictest454726-21apt-get20:05:152
435198993527,4cyclictest0-21swapper/219:25:012
435198993526,5cyclictest442122-21head19:25:272
435198993525,7cyclictest531762-21cron23:46:002
435193993528,4cyclictest0-21swapper/119:30:001
435193993527,4cyclictest0-21swapper/120:25:231
435193993526,4cyclictest0-21swapper/119:10:161
435193993525,7cyclictest452298-21grep19:55:271
435189993527,4cyclictest0-21swapper/019:45:290
435189993527,4cyclictest0-21swapper/019:45:290
435201993426,4cyclictest0-21swapper/319:57:193
43519899347,10cyclictest501393-21grep22:20:162
435198993425,4cyclictest0-21swapper/220:35:172
435198993422,7cyclictest0-21swapper/221:40:002
435198993419,12cyclictest459850-21apt-get20:20:162
435193993427,3cyclictest0-21swapper/120:20:011
435193993426,4cyclictest0-21swapper/121:35:001
435193993425,5cyclictest0-21swapper/100:20:011
435201993326,4cyclictest0-21swapper/322:45:253
435201993325,4cyclictest0-21swapper/323:40:243
435201993324,5cyclictest0-21swapper/320:05:243
435201993323,7cyclictest0-21swapper/300:20:013
435201993323,6cyclictest526978-21sh23:35:013
435198993326,3cyclictest0-21swapper/200:20:012
435198993324,5cyclictest547393-21grep00:30:262
435198993323,7cyclictest504963-21/usr/sbin/munin22:30:172
435198993323,7cyclictest487571-21apt-get21:40:142
435198993320,9cyclictest435440-21/usr/sbin/munin19:10:142
435198993313,16cyclictest462813-21grep20:25:232
435193993322,7cyclictest529944-21grep23:40:241
435193993322,6cyclictest0-21swapper/120:10:251
435189993325,4cyclictest466156-21grep20:35:260
435189993317,14cyclictest11-21ksoftirqd/019:25:140
435201993225,4cyclictest0-21swapper/323:20:263
435201993222,7cyclictest0-21swapper/323:20:003
435201993222,7cyclictest0-21swapper/300:30:003
435198993226,3cyclictest466879-21apt-get20:40:122
435198993225,4cyclictest523814-21apt-get23:25:122
435198993220,8cyclictest438658-21grep19:15:262
435198993220,7cyclictest535081-21grep23:55:262
435198993220,7cyclictest535081-21grep23:55:262
435198993219,10cyclictest537020-21sshd00:02:372
435198993219,10cyclictest491102-21/usr/sbin/munin21:50:162
435198993219,10cyclictest484671-21/usr/sbin/munin21:30:222
435198993219,10cyclictest471030-21sensors_temp20:50:232
435198993218,8cyclictest480283-21apt-get21:20:062
435198993218,11cyclictest497798-21/usr/sbin/munin22:10:292
435193993226,4cyclictest473447-21cron21:00:001
435193993224,4cyclictest0-21swapper/123:22:351
435193993224,4cyclictest0-21swapper/121:00:181
435193993224,4cyclictest0-21swapper/120:35:261
435193993223,5cyclictest490315-21grep21:45:251
435189993224,4cyclictest0-21swapper/023:00:260
435189993222,6cyclictest535044-21grep23:55:260
435189993222,6cyclictest535044-21grep23:55:260
435189993221,6cyclictest0-21swapper/022:30:240
435201993122,5cyclictest503957-21head22:25:253
435201993122,4cyclictest0-21swapper/320:25:013
435201993120,7cyclictest0-21swapper/321:05:003
435201993120,7cyclictest0-21swapper/319:35:003
435198993125,3cyclictest515076-21apt-get23:00:122
435198993125,3cyclictest482452-21apt-get21:25:152
435198993121,7cyclictest472326-21/usr/sbin/munin20:55:192
435198993120,8cyclictest508526-21/usr/sbin/munin22:40:172
435198993120,8cyclictest448238-21/usr/sbin/munin19:45:212
435198993120,8cyclictest448238-21/usr/sbin/munin19:45:212
435198993119,9cyclictest538533-21/usr/sbin/munin00:05:262
435198993118,10cyclictest511866-21/usr/sbin/munin22:50:182
435198993113,13cyclictest529982-21grep23:40:242
435193993123,4cyclictest549621-21sendmail00:40:001
435193993123,4cyclictest0-21swapper/119:35:261
435193993122,5cyclictest0-21swapper/120:10:001
435193993121,6cyclictest0-21swapper/122:15:001
435189993124,3cyclictest0-21swapper/019:40:000
435189993123,4cyclictest0-21swapper/021:55:260
435189993123,4cyclictest0-21swapper/021:55:260
435189993111,4cyclictest4632272sh20:30:010
435201993023,4cyclictest0-21swapper/321:50:263
435201993023,4cyclictest0-21swapper/321:30:273
435201993022,5cyclictest0-21swapper/320:40:253
435201993019,6cyclictest131rcu_preempt19:38:593
435198993024,3cyclictest520178-21apt-get23:15:122
435198993024,3cyclictest502924-21apt-get22:25:132
435198993024,3cyclictest468583-21apt-get20:45:122
435198993020,7cyclictest464302-21/usr/sbin/munin20:30:252
435198993019,8cyclictest443218-21/usr/sbin/munin19:30:192
435198993019,7cyclictest496360-21/usr/sbin/munin22:05:172
435198993018,9cyclictest542922-21/usr/sbin/munin00:20:152
435198993017,10cyclictest473977-21/usr/sbin/munin21:00:192
435198993017,10cyclictest451749-21/usr/sbin/munin19:55:212
435198993016,11cyclictest545520-21wc00:25:252
435198993015,12cyclictest506866-21/usr/sbin/munin22:35:222
435193993023,4cyclictest447666-21sh19:45:001
435193993023,4cyclictest447666-21sh19:45:001
435193993022,4cyclictest0-21swapper/119:45:291
435193993022,4cyclictest0-21swapper/119:45:291
435193993022,4cyclictest0-21swapper/100:05:171
435193993021,6cyclictest0-21swapper/122:30:241
435193993021,5cyclictest0-21swapper/119:20:211
435193993021,4cyclictest0-21swapper/121:50:161
435193993021,4cyclictest0-21swapper/100:10:261
435193993019,7cyclictest0-21swapper/100:24:591
435189993024,4cyclictest508012-21cron22:40:010
435189993022,4cyclictest0-21swapper/023:50:250
435189993021,6cyclictest497130-21grep22:05:260
435189993020,6cyclictest0-21swapper/021:50:250
435189993018,7cyclictest512708-21grep22:50:270
43520199298,7cyclictest40-21ksoftirqd/321:40:123
435201992921,5cyclictest0-21swapper/321:20:003
435201992916,8cyclictest0-21swapper/323:25:253
435198992920,7cyclictest539711-21/usr/sbin/munin00:10:212
435198992919,7cyclictest479257-21/usr/sbin/munin21:15:202
435198992918,8cyclictest494840-21memory22:00:182
435198992918,8cyclictest493235-21/usr/sbin/munin21:55:212
435198992918,8cyclictest493235-21/usr/sbin/munin21:55:212
435198992918,7cyclictest509957-21apt-get22:45:122
435198992913,12cyclictest518705-21fschecks_time23:10:172
435198992911,14cyclictest478171-21grep21:10:262
435193992921,4cyclictest0-21swapper/123:50:241
435193992918,7cyclictest0-21swapper/122:10:001
435189992922,3cyclictest0-21swapper/021:05:260
435189992921,5cyclictest0-21swapper/021:15:180
43520199287,6cyclictest0-21swapper/300:05:213
435201992820,5cyclictest0-21swapper/323:10:003
435201992820,4cyclictest0-21swapper/300:25:003
435201992818,7cyclictest466624-21cron20:40:013
435201992816,8cyclictest0-21swapper/322:35:303
435201992815,10cyclictest505227-21/usr/sbin/munin22:30:213
43520199280,20cyclictest0-21swapper/322:23:503
435198992822,3cyclictest527212-21apt-get23:35:122
435198992821,4cyclictest449598-21apt-get19:50:132
435198992818,7cyclictest517318-21/usr/sbin/munin23:05:212
435193992821,4cyclictest480290-21sh21:20:001
435193992820,5cyclictest475057-21kworker/u8:1+events_unbound21:12:241
435193992817,8cyclictest471747-21sh20:55:011
435189992821,4cyclictest0-21swapper/019:15:260
43520199278,9cyclictest0-21swapper/323:52:183
43520199274,15cyclictest40-21ksoftirqd/319:26:423
435201992720,4cyclictest0-21swapper/319:40:273
435201992720,4cyclictest0-21swapper/319:40:273
435201992720,3cyclictest0-21swapper/321:55:243
435201992720,3cyclictest0-21swapper/321:55:243
435201992717,7cyclictest464023-21/usr/sbin/munin20:30:223
435201992717,6cyclictest0-21swapper/322:15:253
435201992715,9cyclictest482609-21/usr/sbin/munin21:25:173
435201992715,9cyclictest391ktimers/300:35:143
43520199271,18cyclictest0-21swapper/320:48:033
43520199271,18cyclictest0-21swapper/320:02:053
435198992713,9cyclictest447199-21grep19:40:272
435198992713,9cyclictest447199-21grep19:40:272
435193992720,4cyclictest0-21swapper/123:55:171
435193992720,4cyclictest0-21swapper/123:55:171
435193992720,4cyclictest0-21swapper/120:40:161
435193992719,4cyclictest0-21swapper/121:05:261
435193992718,7cyclictest526180-21processes23:30:241
435193992718,5cyclictest0-21swapper/121:55:161
435193992718,5cyclictest0-21swapper/121:55:161
435193992717,7cyclictest528696-21run-parts23:40:001
435189992720,4cyclictest0-21swapper/021:10:260
435189992718,7cyclictest121ktimers/000:20:120
435189992717,6cyclictest536785-21grep00:00:260
43520199267,13cyclictest40-21ksoftirqd/300:10:223
435201992620,3cyclictest0-21swapper/322:05:263
435201992620,3cyclictest0-21swapper/320:10:253
435201992618,5cyclictest0-21swapper/322:50:183
435201992618,5cyclictest0-21swapper/320:55:173
435201992618,4cyclictest0-21swapper/323:02:353
435201992613,10cyclictest546511-21df00:30:133
435201992613,10cyclictest53-21kcompactd021:22:403
435201992612,10cyclictest0-21swapper/319:50:123
43520199261,15cyclictest0-21swapper/322:55:233
435193992618,5cyclictest0-21swapper/119:50:161
435193992618,4cyclictest0-21swapper/123:10:171
435193992616,7cyclictest511887-21tune2fs22:50:181
435193992616,6cyclictest0-21swapper/122:25:001
435193992615,7cyclictest483438-21grep21:25:271
43518999267,6cyclictest131rcu_preempt19:55:140
435189992620,3cyclictest0-21swapper/021:30:240
435189992619,4cyclictest13550irq/42-30be0000.ethernet23:20:000
435189992619,3cyclictest0-21swapper/023:35:240
435189992619,3cyclictest0-21swapper/019:30:260
435189992615,4cyclictest457769-21kworker/u8:2-ext4-rsv-conversion20:15:020
435201992516,7cyclictest508372-21/usr/sbin/munin22:40:153
435201992512,10cyclictest489936-21/usr/sbin/munin21:45:223
435201992512,10cyclictest449024-21cron19:46:003
435201992512,10cyclictest449024-21cron19:46:003
43520199251,18cyclictest0-21swapper/322:13:423
43520199251,16cyclictest0-21swapper/323:56:373
43520199251,16cyclictest0-21swapper/323:56:373
43520199251,16cyclictest0-21swapper/320:50:043
43520199251,16cyclictest0-21swapper/320:27:483
43520199251,16cyclictest0-21swapper/300:04:343
435193992519,3cyclictest0-21swapper/122:45:201
435193992519,3cyclictest0-21swapper/121:40:001
435193992519,3cyclictest0-21swapper/100:35:011
435193992519,3cyclictest0-21swapper/100:05:001
435193992515,7cyclictest495661-21seq22:02:391
435189992519,3cyclictest13850irq/36-mmc100:20:010
435189992518,4cyclictest486864-21grep21:35:260
435189992516,6cyclictest525343-21latency_hist23:30:010
435189992511,9cyclictest204-21dbus-daemon20:52:230
43520199241,15cyclictest0-21swapper/321:10:143
435193992417,4cyclictest489046-21idleruntime-cro21:45:001
435193992415,6cyclictest520380-21tune2fs23:15:161
435193992414,7cyclictest545624-21wc00:25:261
435193992414,7cyclictest504008-21seq22:25:291
43518999249,13cyclictest121ktimers/020:55:200
435189992420,2cyclictest0-21swapper/019:15:010
435189992417,4cyclictest495385-21tail22:00:230
435189992417,4cyclictest1-21systemd00:38:360
435189992417,3cyclictest0-21swapper/020:30:210
435189992416,6cyclictest121ktimers/020:45:180
43518999241,20cyclictest446358-21fschecks_count19:40:180
43518999241,20cyclictest446358-21fschecks_count19:40:180
43518999241,19cyclictest0-21swapper/020:43:280
43518999241,10cyclictest5398372gunzip00:10:240
435193992317,4cyclictest449274-21kworker/u8:0+events_unbound20:01:461
435193992317,3cyclictest0-21swapper/120:35:011
435193992317,3cyclictest0-21swapper/119:15:251
435193992315,4cyclictest0-21swapper/122:15:251
435193992314,6cyclictest515380-21cat23:00:171
43518999231,9cyclictest509957-21apt-get22:45:120
435189992318,3cyclictest13550irq/42-30be0000.ethernet23:30:150
435189992317,4cyclictest0-21swapper/019:21:310
435189992317,3cyclictest0-21swapper/019:50:160
435189992316,3cyclictest0-21swapper/021:43:060
435189992313,7cyclictest546934-21ntpq00:30:210
43518999231,19cyclictest0-21swapper/020:03:070
43518999231,18cyclictest0-21swapper/022:21:240
43518999230,19cyclictest0-21swapper/023:12:180
435193992216,4cyclictest443246-21missed_timers19:30:211
435193992214,5cyclictest0-21swapper/122:35:201
435193992213,6cyclictest461527-21ls20:25:011
435193992211,8cyclictest530743-21df23:45:151
43518999222,15cyclictest518237-21cron23:10:000
435189992217,3cyclictest0-21swapper/020:06:060
435189992213,7cyclictest121ktimers/022:55:140
435189992213,6cyclictest121ktimers/021:25:140
43518999221,19cyclictest0-21swapper/020:20:160
435193992116,3cyclictest0-21swapper/121:20:261
435193992111,7cyclictest469905-21seq20:48:191
43518999217,3cyclictest131rcu_preempt22:25:150
435189992112,6cyclictest0-21swapper/022:40:190
43518999211,18cyclictest537462-21apt-get00:05:120
43518999211,18cyclictest0-21swapper/022:15:100
43519399209,8cyclictest523976-21uniq23:25:161
435193992014,4cyclictest0-21swapper/123:05:191
43518999201,6cyclictest545619-21ls00:25:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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