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2026-05-02 - 10:19

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 Sat May 02, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2376911996050,6cyclictest208-21systemd-logind19:56:450
2376920994937,8cyclictest2470154-21munin-plugin-st23:40:012
2376916994638,4cyclictest2491020-21cron00:40:001
2376911994638,4cyclictest2421977-21cron21:20:000
2376923994535,7cyclictest2416871-21cron21:05:013
2376923994535,7cyclictest2416871-21cron21:05:013
2376920994432,8cyclictest2427476-21fschecks_count21:35:152
2376920994432,7cyclictest2390662-21grep19:45:262
2376916994436,5cyclictest2428816-21munin-plugin-st21:40:011
2376911994436,4cyclictest0-21swapper/019:50:010
2376916994333,7cyclictest2387688-21sendmail19:40:011
2376911994233,5cyclictest208-21systemd-logind21:01:560
2376911994233,5cyclictest208-21systemd-logind21:01:560
2376920994029,7cyclictest0-21swapper/219:15:012
2376920993931,4cyclictest0-21swapper/200:25:012
2376916993928,7cyclictest2459466-21unixbench_multi23:05:221
2376911993931,5cyclictest2484245-21idleruntime-cro00:20:010
2376923993827,7cyclictest2445811-21grep22:25:253
2376916993826,6cyclictest0-21swapper/119:50:241
2376911993832,4cyclictest2384271-21munin-plugin-st19:30:010
2376923993727,6cyclictest0-21swapper/320:20:013
2376923993727,6cyclictest0-21swapper/300:20:013
2376920993724,9cyclictest0-21swapper/223:00:002
2376920993722,10cyclictest2408346-21munin-run20:40:002
2376916993725,7cyclictest0-21swapper/122:50:241
2376911993726,6cyclictest0-21swapper/022:55:240
2376920993627,5cyclictest0-21swapper/220:50:012
2376911993628,5cyclictest2437696-21kworker/u8:1+events_unbound22:27:060
2376911993626,7cyclictest2430524-21auditctl21:45:010
2376911993626,6cyclictest0-21swapper/023:55:000
2376920993524,5cyclictest2419868-21grep21:10:252
2376916993527,4cyclictest0-21swapper/123:45:001
2376916993527,4cyclictest0-21swapper/123:10:231
2376916993527,4cyclictest0-21swapper/122:05:151
2376916993525,6cyclictest0-21swapper/122:45:221
2376916993525,6cyclictest0-21swapper/122:45:221
2376916993525,6cyclictest0-21swapper/119:20:011
2376916993524,6cyclictest0-21swapper/121:45:241
2376911993527,5cyclictest0-21swapper/020:30:010
2376911993519,12cyclictest121ktimers/021:20:120
2376923993426,4cyclictest0-21swapper/319:16:413
2376923993425,5cyclictest0-21swapper/321:16:563
2376923993424,6cyclictest0-21swapper/320:35:243
237692099343,22cyclictest2401338-21sendmail-msp20:20:012
2376920993422,8cyclictest2476723-21grep23:55:262
2376920993422,8cyclictest0-21swapper/222:10:012
2376920993420,9cyclictest311ktimers/220:00:142
2376920993420,9cyclictest311ktimers/220:00:132
2376916993426,5cyclictest2467987-21grep23:30:241
2376916993425,6cyclictest0-21swapper/122:05:011
2376916993422,7cyclictest0-21swapper/120:35:231
2376911993427,4cyclictest2466736-21cron23:30:010
2376923993325,4cyclictest2428809-21kthreadd21:40:003
2376923993324,5cyclictest0-21swapper/321:52:003
2376923993323,7cyclictest2443253-21fschecks_count22:20:153
2376920993326,4cyclictest2480791-21latency_hist00:10:012
2376920993325,4cyclictest0-21swapper/219:15:232
2376916993325,5cyclictest0-21swapper/123:40:001
2376916993323,7cyclictest0-21swapper/100:05:001
2376916993323,6cyclictest0-21swapper/123:55:001
2376916993323,6cyclictest0-21swapper/119:45:251
2376916993322,7cyclictest0-21swapper/120:30:251
2376916993322,6cyclictest0-21swapper/100:20:251
2376923993225,4cyclictest2378110-21unixbench_singl19:10:253
2376923993225,4cyclictest0-21swapper/323:25:263
2376923993223,5cyclictest0-21swapper/320:25:243
2376920993223,4cyclictest0-21swapper/220:55:152
2376920993222,7cyclictest2434170-21sort21:55:012
2376920993222,5cyclictest0-21swapper/222:05:012
2376920993222,5cyclictest0-21swapper/219:35:262
2376920993220,7cyclictest0-21swapper/220:40:262
2376920993220,10cyclictest311ktimers/219:30:122
2376916993223,6cyclictest2378122-21unixbench_singl19:10:271
2376916993223,5cyclictest0-21swapper/123:58:031
2376916993222,6cyclictest0-21swapper/122:10:261
2376916993222,6cyclictest0-21swapper/121:40:241
2376916993222,6cyclictest0-21swapper/121:10:251
2376916993222,6cyclictest0-21swapper/100:20:011
2376916993221,6cyclictest0-21swapper/120:50:011
2376916993220,9cyclictest2463328-21cron23:20:011
2376911993221,8cyclictest2481627-21runrttasks00:10:210
2376923993124,4cyclictest0-21swapper/300:05:313
2376923993123,4cyclictest0-21swapper/320:05:253
2376920993123,6cyclictest2425081-21kworker/u8:3+events_unbound22:22:052
2376920993123,4cyclictest0-21swapper/220:55:012
2376920993123,4cyclictest0-21swapper/200:39:592
2376920993122,5cyclictest0-21swapper/221:30:262
2376920993120,8cyclictest2471993-21ls23:45:012
2376920993120,7cyclictest2450933-21grep22:40:242
237692099311,3cyclictest131rcu_preempt20:10:122
2376916993122,5cyclictest0-21swapper/121:35:001
2376916993120,7cyclictest2415569-21cut21:00:151
2376916993120,7cyclictest2415569-21cut21:00:151
2376916993120,7cyclictest0-21swapper/121:25:011
2376916993120,6cyclictest0-21swapper/100:05:301
2376911993125,3cyclictest0-21swapper/019:35:000
2376911993122,6cyclictest2444577-21cron22:25:010
2376923993023,4cyclictest2424140-21fschecks_time21:25:163
2376923993022,6cyclictest391ktimers/323:30:133
2376923993022,5cyclictest2477181-21kthreadd00:00:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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