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2026-04-23 - 00:51

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 Apr 22, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2269573995340,9cyclictest391ktimers/309:10:123
2269573995037,10cyclictest391ktimers/310:50:123
2269560994835,10cyclictest121ktimers/009:05:120
2269569994634,8cyclictest2294198-21sendmail08:20:012
2269563994531,10cyclictest231ktimers/112:20:101
2269563994531,10cyclictest231ktimers/112:20:101
2269573994432,8cyclictest2321675-21cron09:40:013
2269569994430,10cyclictest311ktimers/210:25:112
2269563994330,10cyclictest231ktimers/111:30:121
2269563994232,6cyclictest2280537-21munin-run07:40:001
2269563994230,8cyclictest2295893-21auditctl08:25:011
2269560994236,4cyclictest2316283-21kworker/u8:1+events_unbound09:28:390
2269573994029,5cyclictest0-21swapper/310:19:593
2269563994032,5cyclictest2277137-21ls07:30:001
2269563994026,10cyclictest231ktimers/110:40:121
2269563994025,12cyclictest231ktimers/108:00:121
2269560994033,5cyclictest2338499-21kworker/u8:0+events_unbound10:28:520
2269560994032,6cyclictest121ktimers/012:05:110
2269560994028,9cyclictest438-21cron12:30:000
2269573993930,5cyclictest2340438-21cron10:35:013
2269563993929,4cyclictest131rcu_preempt07:50:101
2269573993828,7cyclictest2311520-21latency_hist09:10:003
2269560993831,4cyclictest2271887-21fschecks_count07:15:030
2269569993728,6cyclictest0-21swapper/211:00:002
2269569993727,6cyclictest0-21swapper/212:30:242
2269563993728,5cyclictest0-21swapper/112:30:001
2269563993726,7cyclictest0-21swapper/109:45:231
2269563993718,5cyclictest131rcu_preempt07:11:411
2269569993627,6cyclictest2314858-21sh09:20:012
2269569993625,7cyclictest2350262-21grep11:00:252
2269563993619,5cyclictest131rcu_preempt10:00:161
2269560993630,4cyclictest2304235-21kworker/u8:2+events_unbound08:48:330
2269560993628,4cyclictest0-21swapper/011:00:250
2269569993523,8cyclictest2353814-21grep11:10:242
2269569993523,7cyclictest0-21swapper/207:13:162
2269569993522,9cyclictest2317873-21grep09:25:262
2269563993528,4cyclictest2352598-21apt11:10:001
2269563993526,5cyclictest2376465-21cron12:20:001
2269563993525,5cyclictest0-21swapper/112:04:591
2269560993528,4cyclictest2314860-21sh09:20:010
2269569993428,4cyclictest2342165-21sendmail10:40:012
226956399349,4cyclictest231ktimers/112:35:131
2269563993427,4cyclictest0-21swapper/110:45:151
2269563993426,4cyclictest2373063-21latency_hist12:10:001
2269563993424,3cyclictest131rcu_preempt10:20:511
2269563993415,9cyclictest131rcu_preempt08:12:531
2269560993426,4cyclictest2378176-21sh12:25:000
2269560993426,4cyclictest2378176-21sh12:25:000
2269560993423,7cyclictest2365782-21grep11:45:230
2269573993325,4cyclictest0-21swapper/307:40:243
2269573993325,4cyclictest0-21swapper/307:40:243
2269573993324,4cyclictest2365790-21grep11:45:233
2269573993323,5cyclictest0-21swapper/308:08:253
2269569993326,4cyclictest2333478-21kworker/u8:3+events_unbound10:18:482
2269569993324,5cyclictest0-21swapper/212:00:252
2269569993323,6cyclictest0-21swapper/211:50:002
2269569993321,8cyclictest311ktimers/208:00:132
226956399335,5cyclictest2302950-21/usr/sbin/munin08:45:181
2269563993327,4cyclictest2324756-21kworker/u8:2+events_unbound09:52:421
2269563993325,5cyclictest2314868-21munin-run09:20:011
2269563993324,4cyclictest0-21swapper/109:25:261
2269563993322,8cyclictest231ktimers/110:15:201
2269563993320,8cyclictest0-21swapper/109:20:241
2269563993318,9cyclictest131rcu_preempt09:08:361
2269573993221,7cyclictest0-21swapper/309:55:263
2269569993225,4cyclictest0-21swapper/211:35:162
2269569993224,4cyclictest0-21swapper/210:40:162
2269569993224,4cyclictest0-21swapper/207:30:252
2269569993223,6cyclictest208-21systemd-logind07:23:182
2269569993221,6cyclictest0-21swapper/207:35:242
226956399328,14cyclictest24-21ksoftirqd/108:40:011
226956399327,16cyclictest0-21swapper/111:25:011
226956399324,9cyclictest24-21ksoftirqd/108:25:231
2269563993223,5cyclictest2290372-21unixbench_singl08:05:251
226956399321,12cyclictest24-21ksoftirqd/107:20:011
2269560993225,4cyclictest2345285-21kworker/u8:0+events_unbound10:54:020
2269573993123,5cyclictest2297600-21ls08:30:013
2269573993123,4cyclictest0-21swapper/310:45:243
2269569993125,4cyclictest2364480-21kworker/u8:2+events_unbound11:54:112
2269569993124,4cyclictest2290778-21ls08:10:012
2269569993124,4cyclictest0-21swapper/207:45:002
2269569993124,4cyclictest0-21swapper/207:45:002
2269569993123,4cyclictest0-21swapper/209:40:012
2269569993122,5cyclictest0-21swapper/211:45:002
226956399314,6cyclictest24-21ksoftirqd/107:20:171
2269563993124,4cyclictest2283957-21latency_hist07:50:001
2269563993123,5cyclictest0-21swapper/111:00:151
2269563993122,4cyclictest131rcu_preempt09:10:171
2269563993121,6cyclictest2321199-21grep09:35:251
2269563993116,9cyclictest131rcu_preempt11:19:091
2269563993116,9cyclictest131rcu_preempt10:38:551
2269563993116,9cyclictest131rcu_preempt09:30:251
2269563993115,4cyclictest0-21swapper/111:25:131
2269563993114,9cyclictest131rcu_preempt10:55:221
2269563993111,14cyclictest221rcuc/110:05:131
2269563993111,14cyclictest221rcuc/110:05:131
2269560993119,10cyclictest121ktimers/012:10:110
2269560993110,4cyclictest131rcu_preempt11:55:160
2269573993024,3cyclictest2269553-21cyclictest12:30:123
2269573993023,3cyclictest0-21swapper/309:00:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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