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2026-05-08 - 01:35

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 Thu May 07, 2026 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261483995446,5cyclictest279275-21idleruntime-cro08:00:002
261487994935,11cyclictest391ktimers/311:15:113
261474994941,5cyclictest293542-21munin-plugin-st08:40:000
261474994941,5cyclictest293542-21munin-plugin-st08:40:000
261483994837,7cyclictest277107-21grep07:50:242
261483994635,7cyclictest311ktimers/208:35:132
261483994635,7cyclictest311ktimers/208:35:132
261483994633,9cyclictest311ktimers/211:40:122
261478994536,5cyclictest1-21systemd07:35:131
261487994437,4cyclictest286496-21cron08:20:003
261487994337,4cyclictest265428-21sendmail07:20:013
261478994316,7cyclictest131rcu_preempt12:20:101
261487994233,5cyclictest208-21systemd-logind09:00:403
261478994132,5cyclictest277554-21cron07:55:011
261474994133,4cyclictest314212-21latency_hist09:40:000
261474994133,4cyclictest314212-21latency_hist09:40:000
261487994030,7cyclictest284825-21cat08:15:003
261487994029,7cyclictest391ktimers/312:20:113
261483994030,7cyclictest267349-21idleruntime-cro07:25:012
261487993931,5cyclictest303994-21munin-plugin-st09:10:003
261487993931,5cyclictest208-21systemd-logind10:10:513
261487993929,7cyclictest0-21swapper/308:05:013
261483993931,5cyclictest337820-21kworker/u8:0-ext4-rsv-conversion11:54:592
261478993930,4cyclictest0-21swapper/112:35:001
261478993930,4cyclictest0-21swapper/112:34:591
261474993928,8cyclictest341496-21sh11:00:000
261478993830,5cyclictest322744-21cron10:05:011
261478993829,4cyclictest0-21swapper/111:30:001
261478993827,6cyclictest335979-21grep10:40:241
261483993730,4cyclictest0-21swapper/210:20:012
261474993730,4cyclictest316326-21fschecks_count09:45:140
261474993729,4cyclictest0-21swapper/009:20:010
261483993629,4cyclictest263102-21sh07:15:012
261474993627,5cyclictest0-21swapper/010:45:000
261474993626,6cyclictest0-21swapper/008:00:010
261487993526,6cyclictest0-21swapper/312:20:003
261487993525,7cyclictest0-21swapper/307:25:003
261483993528,4cyclictest0-21swapper/210:25:152
261483993527,4cyclictest0-21swapper/210:00:132
261483993524,6cyclictest0-21swapper/209:55:252
261483993521,10cyclictest311ktimers/212:30:112
261483993521,10cyclictest311ktimers/212:30:112
261483993510,5cyclictest32-21ksoftirqd/208:55:172
261478993524,7cyclictest264976-21grep07:15:241
261478993522,9cyclictest231ktimers/108:35:121
261478993522,9cyclictest231ktimers/108:35:121
26147499359,6cyclictest11-21ksoftirqd/007:20:000
261474993526,4cyclictest0-21swapper/012:34:590
261474993526,4cyclictest0-21swapper/012:34:590
261474993525,6cyclictest0-21swapper/008:05:010
261487993425,5cyclictest0-21swapper/311:30:163
26148399347,9cyclictest347438-21wc11:15:182
261478993426,4cyclictest0-21swapper/112:05:161
261478993423,8cyclictest314206-21sh09:40:001
261478993423,8cyclictest314206-21sh09:39:591
261474993426,4cyclictest0-21swapper/011:20:000
261487993323,7cyclictest341093-21grep10:55:273
261483993326,4cyclictest0-21swapper/212:15:142
261483993325,4cyclictest0-21swapper/210:55:262
261483993325,4cyclictest0-21swapper/210:10:162
261483993321,9cyclictest438-21cron10:50:012
26147499339,9cyclictest0-21swapper/007:15:010
261478993226,4cyclictest300475-21kworker/u8:3+events_unbound09:54:421
261478993225,5cyclictest266978-21kworker/u8:3+events_unbound07:30:141
261478993220,7cyclictest363626-21grep12:00:231
261474993225,4cyclictest0-21swapper/007:45:230
261474993225,3cyclictest269045-21kthreadd07:30:010
261474993223,4cyclictest131rcu_preempt10:06:050
261487993124,4cyclictest0-21swapper/311:20:263
261487993123,4cyclictest0-21swapper/308:39:593
261487993123,4cyclictest0-21swapper/308:39:593
261487993121,7cyclictest277116-21grep07:50:233
261487993120,7cyclictest360462-21auditctl11:54:593
26148399319,6cyclictest32-21ksoftirqd/210:35:002
261483993125,3cyclictest0-21swapper/208:20:242
261483993124,4cyclictest0-21swapper/208:10:252
261483993123,4cyclictest0-21swapper/211:10:242
261483993119,9cyclictest329240-21cron10:21:012
261478993123,5cyclictest339787-21cron10:55:001
261478993123,4cyclictest0-21swapper/110:05:251
261478993121,6cyclictest0-21swapper/108:20:011
261478993119,8cyclictest0-21swapper/111:00:011
26147499318,5cyclictest0-21swapper/010:15:240
26147499317,5cyclictest11-21ksoftirqd/007:35:020
261474993124,4cyclictest356657-21unixbench_singl11:40:230
26147499310,10cyclictest131rcu_preempt11:33:050
261487993023,5cyclictest300572-21cron09:00:013
261487993022,5cyclictest312087-21unixbench_singl09:30:243
261487993019,7cyclictest278791-21grep07:55:253
261487993017,9cyclictest1-21systemd07:40:153
261483993020,7cyclictest290362-21/usr/sbin/munin08:30:252
261483993020,7cyclictest290362-21/usr/sbin/munin08:30:252
261483993020,6cyclictest0-21swapper/208:10:012
261483993020,6cyclictest0-21swapper/208:10:012
261483993016,11cyclictest333343-21/usr/sbin/munin10:35:152
261478993023,5cyclictest295054-21kworker/u8:2+events_unbound09:15:421
261478993023,4cyclictest0-21swapper/108:40:161
261478993019,6cyclictest0-21swapper/109:45:251
26147499306,6cyclictest0-21swapper/008:15:170
261474993021,6cyclictest438-21cron09:30:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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