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2026-06-18 - 01:44

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 Wed Jun 17, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
423317995245,4cyclictest517004-21grep11:40:000
423317995245,4cyclictest517004-21grep11:39:590
423325995144,4cyclictest530649-21grep12:20:002
423317995128,8cyclictest461113-21grep08:55:250
423317995128,8cyclictest461113-21grep08:55:240
423328994940,4cyclictest440921-21sendmail08:00:013
423322994941,5cyclictest503359-21munin-run11:00:011
423328994839,6cyclictest486694-21grep10:10:243
423325994532,8cyclictest528878-21sshd12:14:272
423328994434,5cyclictest428963-21cron07:25:003
423325994434,7cyclictest508049-21grep11:10:252
423322994335,4cyclictest482057-21munin-plugin-st10:00:001
423322994334,5cyclictest506764-21cron11:10:011
423317994336,4cyclictest459769-21latency_hist08:55:010
423325994233,5cyclictest0-21swapper/212:35:002
423325994231,7cyclictest523383-21grep11:55:242
423328994131,7cyclictest489101-21sendmail10:20:013
423328994130,7cyclictest0-21swapper/309:28:543
423325994126,11cyclictest311ktimers/208:30:122
423328994028,9cyclictest455903-21grep08:41:023
423322994027,9cyclictest231ktimers/112:25:121
423317994033,4cyclictest475238-21munin-plugin-st09:39:590
423325993926,9cyclictest519953-21grep11:45:242
423317993928,6cyclictest481638-21grep09:55:240
423328993831,5cyclictest391ktimers/308:05:153
423328993828,7cyclictest496345-21sendmail10:40:003
423328993828,7cyclictest496345-21sendmail10:40:003
423325993827,7cyclictest0-21swapper/209:25:242
423325993825,8cyclictest0-21swapper/207:15:012
423325993821,6cyclictest518435-21kworker/u8:0+events_unbound12:00:192
423322993829,5cyclictest521690-21unixbench_singl11:50:251
423317993831,3cyclictest0-21swapper/011:44:590
423328993728,6cyclictest0-21swapper/312:35:013
423325993729,4cyclictest0-21swapper/211:25:242
423325993726,7cyclictest454123-21unixbench_singl08:35:242
423325993725,8cyclictest459248-21grep08:50:262
423328993628,4cyclictest0-21swapper/307:25:263
423322993628,4cyclictest0-21swapper/107:40:251
423322993628,4cyclictest0-21swapper/107:40:241
423322993627,6cyclictest489090-21munin-plugin-st10:20:001
423325993527,4cyclictest0-21swapper/207:25:162
423325993525,6cyclictest521651-21grep11:50:242
423325993525,6cyclictest0-21swapper/208:45:292
423322993528,3cyclictest0-21swapper/111:39:591
423322993528,3cyclictest0-21swapper/111:39:591
423322993523,9cyclictest476948-21auditctl09:45:001
423328993426,4cyclictest0-21swapper/311:15:163
423325993428,4cyclictest462930-21kworker/u8:3+events_unbound09:06:412
423325993428,4cyclictest462930-21kworker/u8:3+events_unbound09:06:412
423325993426,4cyclictest0-21swapper/210:45:262
423322993424,7cyclictest432074-21kworker/u8:0+events_unbound08:38:451
423328993326,4cyclictest473533-21kthreadd09:35:003
423328993324,6cyclictest452391-21unixbench_multi08:30:253
423325993325,4cyclictest0-21swapper/212:25:242
423325993325,4cyclictest0-21swapper/209:55:252
423325993325,4cyclictest0-21swapper/209:00:002
423325993325,4cyclictest0-21swapper/209:00:002
423325993323,6cyclictest0-21swapper/212:35:262
423325993322,7cyclictest438785-21grep07:50:252
423325993321,8cyclictest0-21swapper/210:40:222
423322993325,5cyclictest457963-21sh08:50:001
423322993325,4cyclictest0-21swapper/107:10:261
423322993324,5cyclictest0-21swapper/112:40:001
423322993324,4cyclictest0-21swapper/110:25:161
423322993323,7cyclictest444689-21fschecks_count08:10:171
423322993322,7cyclictest0-21swapper/107:25:011
423317993327,3cyclictest489083-21kthreadd10:20:010
423317993324,4cyclictest0-21swapper/011:20:000
423328993225,3cyclictest0-21swapper/312:20:253
423328993222,6cyclictest501647-21cron10:55:003
423325993225,4cyclictest468416-21cron09:20:002
423322993222,6cyclictest490582-21grep10:20:251
423317993224,4cyclictest431117-21grep07:30:160
423317993224,4cyclictest431117-21grep07:30:160
423317993224,4cyclictest0-21swapper/010:34:060
423317993223,6cyclictest468408-21sh09:20:010
423328993124,4cyclictest503369-21sendmail11:00:003
423325993122,6cyclictest311ktimers/210:35:132
423325993122,6cyclictest311ktimers/210:35:132
423325993122,4cyclictest0-21swapper/208:30:012
423325993121,7cyclictest483765-21debian-sa110:05:012
423325993121,7cyclictest479881-21grep09:50:262
423325993120,7cyclictest0-21swapper/212:20:252
423325993120,7cyclictest0-21swapper/210:05:252
423322993123,4cyclictest0-21swapper/108:10:001
423317993124,5cyclictest432074-21kworker/u8:0+events_unbound09:28:560
423317993123,4cyclictest0-21swapper/011:10:010
423317993122,4cyclictest0-21swapper/007:15:170
423317993120,8cyclictest525529-21cron12:05:010
423328993024,3cyclictest0-21swapper/311:35:273
423328993024,3cyclictest0-21swapper/311:35:273
423328993023,4cyclictest0-21swapper/308:00:253
423328993022,4cyclictest0-21swapper/312:35:273
423328993022,4cyclictest0-21swapper/308:45:283
423328993021,5cyclictest0-21swapper/309:05:253
423328993021,5cyclictest0-21swapper/309:05:253
423328993021,4cyclictest0-21swapper/312:25:153
423328993018,8cyclictest0-21swapper/308:55:013
423325993023,4cyclictest503358-21cron11:00:012
423325993022,4cyclictest0-21swapper/208:00:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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