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2026-05-12 - 07:11

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 Tue May 12, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3841656995424,9cyclictest131rcu_preempt19:15:123
3841651995438,11cyclictest311ktimers/219:55:142
3841656994943,4cyclictest3890497-21kworker/u8:3+events_unbound23:33:183
3841642994739,4cyclictest3893965-21munin-run21:40:010
3841642994631,11cyclictest121ktimers/022:55:130
3841645994531,10cyclictest231ktimers/120:50:131
3841656994434,6cyclictest3876217-21grep20:45:253
384164599431,38cyclictest3928002-21grep23:15:271
384164599431,38cyclictest3928002-21grep23:15:261
3841656994232,6cyclictest0-21swapper/323:20:003
3841656994232,6cyclictest0-21swapper/323:20:003
3841651994229,10cyclictest311ktimers/220:35:142
3841645994234,5cyclictest3921466-21sendmail23:00:011
3841645994231,7cyclictest3854064-21unixbench_multi19:40:241
3841645994229,8cyclictest3895261-21grep21:40:281
3841645994130,7cyclictest3852400-21unixbench_singl19:35:261
3841642994128,10cyclictest121ktimers/023:05:120
3841651994030,6cyclictest0-21swapper/222:00:002
3841645994030,6cyclictest3889249-21fschecks_count21:25:161
3841642994031,6cyclictest3888844-21cron21:25:000
3841642994031,6cyclictest3888844-21cron21:24:590
3841642994028,7cyclictest3907129-21grep22:15:240
3841645993928,7cyclictest0-21swapper/119:15:251
384164299393,5cyclictest131rcu_preempt00:25:140
3841642993927,7cyclictest3881409-21head21:00:250
3841645993831,5cyclictest3835168-21kworker/u8:3+events_unbound19:10:031
3841645993826,8cyclictest231ktimers/123:50:131
384164299384,6cyclictest131rcu_preempt00:30:130
3841642993829,5cyclictest0-21swapper/023:54:590
3841656993729,4cyclictest0-21swapper/320:00:163
3841656993725,8cyclictest3902491-21sh22:05:013
3841656993720,6cyclictest3890497-21kworker/u8:3+events_unbound22:57:233
3841656993717,6cyclictest3879784-21kworker/u8:0+events_unbound20:59:063
3841651993726,7cyclictest0-21swapper/221:40:012
3841642993727,6cyclictest3895263-21unixbench_singl21:40:270
3841642993726,6cyclictest0-21swapper/020:50:260
3841656993631,3cyclictest3873288-21sendmail20:39:593
3841651993629,4cyclictest0-21swapper/219:15:012
3841645993628,4cyclictest0-21swapper/121:15:011
3841645993628,4cyclictest0-21swapper/100:13:211
3841645993627,5cyclictest3954045-21unixbench_multi00:30:251
3841645993626,6cyclictest0-21swapper/100:20:161
3841642993626,6cyclictest0-21swapper/023:59:590
3841642993625,6cyclictest0-21swapper/020:20:260
3841642993625,6cyclictest0-21swapper/020:20:260
384164299361,31cyclictest0-21swapper/022:45:120
3841656993527,5cyclictest3851061-21apt-key19:35:013
3841656993525,5cyclictest0-21swapper/322:22:573
3841651993527,4cyclictest0-21swapper/223:40:162
3841651993525,6cyclictest0-21swapper/200:00:272
3841645993524,8cyclictest231ktimers/121:00:131
3841642993528,4cyclictest0-21swapper/023:20:000
3841642993528,4cyclictest0-21swapper/023:20:000
3841642993526,5cyclictest0-21swapper/022:40:250
3841642993526,5cyclictest0-21swapper/022:40:250
3841642993526,5cyclictest0-21swapper/019:30:010
3841656993426,4cyclictest0-21swapper/322:30:163
3841656993424,7cyclictest3922715-21grep23:00:253
3841651993427,3cyclictest0-21swapper/220:25:262
3841651993427,3cyclictest0-21swapper/220:25:262
3841645993426,4cyclictest0-21swapper/123:55:261
3841645993423,7cyclictest0-21swapper/120:20:261
3841645993423,7cyclictest0-21swapper/120:20:261
3841642993424,6cyclictest0-21swapper/021:35:000
3841642993423,6cyclictest0-21swapper/021:55:010
3841656993327,4cyclictest391ktimers/321:50:103
3841656993325,4cyclictest0-21swapper/320:05:263
3841656993324,5cyclictest3917849-21idleruntime-cro22:50:003
3841656993324,5cyclictest0-21swapper/321:15:263
3841656993324,5cyclictest0-21swapper/321:15:263
3841656993324,4cyclictest0-21swapper/323:15:003
3841656993316,5cyclictest3861130-21kworker/u8:0+events_unbound20:27:203
3841656993316,5cyclictest3861130-21kworker/u8:0+events_unbound20:27:203
3841651993325,4cyclictest0-21swapper/222:35:262
3841651993325,3cyclictest0-21swapper/223:50:252
3841651993324,5cyclictest0-21swapper/220:45:162
3841645993326,3cyclictest0-21swapper/123:20:141
3841645993323,6cyclictest0-21swapper/122:05:001
3841645993322,6cyclictest0-21swapper/120:00:251
3841642993323,6cyclictest0-21swapper/022:25:000
3841642993322,7cyclictest0-21swapper/022:05:010
384164299331,4cyclictest131rcu_preempt21:10:130
3841656993223,5cyclictest0-21swapper/300:30:163
3841656993223,4cyclictest0-21swapper/322:25:193
3841656993221,7cyclictest3843036-21grep19:10:253
3841651993224,4cyclictest0-21swapper/219:25:172
3841645993225,4cyclictest3924880-21grep23:10:011
3841645993224,4cyclictest0-21swapper/120:25:161
3841645993224,4cyclictest0-21swapper/120:25:151
384164299322,5cyclictest131rcu_preempt23:40:120
3841642993223,5cyclictest0-21swapper/022:25:280
3841642993220,9cyclictest121ktimers/019:20:110
3841656993122,4cyclictest0-21swapper/320:50:173
3841656993121,6cyclictest0-21swapper/322:40:003
3841656993121,6cyclictest0-21swapper/321:10:013
3841656993121,5cyclictest0-21swapper/321:40:013
3841656993121,5cyclictest0-21swapper/300:00:273
3841656993120,6cyclictest3900312-21grep21:55:253
3841656993116,6cyclictest3890497-21kworker/u8:3+events_unbound00:18:213
3841656993116,6cyclictest3890497-21kworker/u8:3+events_unbound00:18:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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