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2026-03-22 - 05:53

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 Mar 22, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2316585995035,11cyclictest391ktimers/319:25:123
2316585995035,11cyclictest391ktimers/319:25:123
2316585994633,9cyclictest391ktimers/320:20:113
2316585994436,5cyclictest2371895-21cron21:50:003
2316574994437,4cyclictest2392588-21idleruntime-cro22:50:000
2316583994335,5cyclictest2410051-21grep23:40:002
2316583994235,4cyclictest2427113-21cut00:30:002
2316579994232,6cyclictest23330582sleep119:55:151
2316574994236,4cyclictest2381984-21kworker/u8:2+events_unbound22:23:020
2316574994131,8cyclictest151rcuc/020:45:110
2316583994031,6cyclictest2401098-21cron23:15:002
2316579993931,4cyclictest0-21swapper/122:18:011
2316574993928,8cyclictest2426638-21grep00:25:260
2316583993831,4cyclictest2349745-21munin-plugin-st20:45:012
2316583993831,4cyclictest2319175-21fschecks_count19:15:152
2316583993831,4cyclictest2319175-21fschecks_count19:15:152
2316583993827,7cyclictest2326916-21grep19:35:272
2316583993826,8cyclictest2321817-21grep19:20:252
2316574993832,4cyclictest2320525-21sendmail19:20:000
2316574993832,4cyclictest2320525-21sendmail19:20:000
2316585993726,6cyclictest0-21swapper/319:15:013
2316583993729,4cyclictest0-21swapper/221:40:002
2316583993728,6cyclictest2345907-21unixbench_singl20:30:252
2316583993727,6cyclictest0-21swapper/220:05:172
2316579993722,11cyclictest231ktimers/121:40:121
2316574993728,6cyclictest2371904-21apt21:50:000
2316574993727,7cyclictest2341187-21sh20:20:010
2316585993627,5cyclictest2389180-21sendmail22:40:003
2316585993626,6cyclictest0-21swapper/319:50:253
2316585993626,6cyclictest0-21swapper/319:50:253
2316585993625,7cyclictest0-21swapper/320:05:273
2316583993628,4cyclictest0-21swapper/221:30:242
2316583993628,4cyclictest0-21swapper/221:30:232
2316583993627,5cyclictest0-21swapper/223:25:002
2316579993628,4cyclictest0-21swapper/122:45:221
2316579993625,8cyclictest438-21cron23:50:001
2316574993627,4cyclictest0-21swapper/023:10:010
2316574993626,7cyclictest2385294-21grep22:25:250
2316585993528,5cyclictest2371001-21kworker/u8:2+events_unbound22:00:133
2316585993527,4cyclictest0-21swapper/321:25:003
2316585993527,4cyclictest0-21swapper/300:15:003
2316585993526,5cyclictest0-21swapper/320:30:013
2316585993525,6cyclictest0-21swapper/323:35:273
2316583993528,5cyclictest2347994-21kworker/u8:2+events_unbound20:47:472
2316583993525,6cyclictest2424939-21unixbench_multi00:20:262
2316574993524,8cyclictest2357803-21grep21:05:270
231657499351,32cyclictest0-21swapper/000:35:130
2316585993426,5cyclictest2427110-21ls00:30:003
2316585993425,6cyclictest2328650-21unixbench_singl19:40:253
2316585993425,5cyclictest2415172-21munin-plugin-st23:55:013
2316583993426,4cyclictest0-21swapper/223:20:002
2316583993425,6cyclictest0-21swapper/200:15:002
2316583993424,6cyclictest0-21swapper/223:00:252
2316583993424,6cyclictest0-21swapper/221:05:012
2316583993423,7cyclictest2380163-21grep22:10:252
2316579993427,4cyclictest0-21swapper/120:15:251
2316579993426,4cyclictest0-21swapper/100:25:261
2316574993426,6cyclictest2394222-21kworker/u8:2+events_unbound22:54:410
2316574993423,8cyclictest2416389-21grep23:55:250
2316574993423,8cyclictest2354383-21grep20:55:260
2316585993326,4cyclictest0-21swapper/323:00:013
2316585993325,4cyclictest2403269-21fschecks_time23:20:163
2316585993325,4cyclictest0-21swapper/322:20:163
2316585993324,6cyclictest208-21systemd-logind21:52:573
2316585993324,5cyclictest0-21swapper/321:00:153
2316585993323,7cyclictest2406249-21latency_hist23:30:013
2316583993326,4cyclictest0-21swapper/220:35:162
2316583993326,4cyclictest0-21swapper/200:10:002
2316583993322,7cyclictest0-21swapper/221:05:272
2316579993326,4cyclictest2330777-21http19:50:011
2316579993324,5cyclictest0-21swapper/100:00:151
2316579993323,6cyclictest0-21swapper/121:05:271
2316574993326,5cyclictest2368184-21kworker/u8:3+events_unbound21:42:560
2316574993323,6cyclictest0-21swapper/022:15:260
2316574993322,7cyclictest0-21swapper/022:55:240
2316585993226,3cyclictest0-21swapper/300:25:003
2316585993224,4cyclictest0-21swapper/320:17:433
2316585993223,4cyclictest0-21swapper/321:37:543
2316583993223,6cyclictest2413895-21grep23:50:162
2316583993223,5cyclictest0-21swapper/223:08:082
2316583993222,6cyclictest0-21swapper/222:15:262
2316579993225,4cyclictest0-21swapper/121:20:251
2316579993224,5cyclictest0-21swapper/122:15:001
2316579993223,6cyclictest2354842-21idleruntime-cro21:00:001
2316579993223,6cyclictest0-21swapper/123:10:011
2316579993222,7cyclictest0-21swapper/119:30:261
2316579993222,7cyclictest0-21swapper/119:30:251
231657499329,4cyclictest131rcu_preempt20:40:090
2316574993221,7cyclictest0-21swapper/021:05:000
2316574993218,9cyclictest204-21dbus-daemon23:43:140
2316585993124,4cyclictest0-21swapper/320:40:233
2316583993123,4cyclictest2413004-21grep23:45:252
2316583993123,4cyclictest0-21swapper/222:50:182
2316583993121,6cyclictest0-21swapper/222:30:252
231657499314,5cyclictest131rcu_preempt21:30:100
231657499314,5cyclictest131rcu_preempt21:30:100
2316585993020,6cyclictest2366795-21cut21:35:003
2316585993020,6cyclictest2366795-21cut21:35:003
2316585993018,7cyclictest0-21swapper/322:30:253
2316583993021,6cyclictest2371895-21cron21:50:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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