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2026-05-03 - 16:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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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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 rack7slot3s.osadl.org (updated Sun May 03, 2026 12:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3153221700,5sleep23199299cyclictest19:32:142
31980991156,71cyclictest0-21swapper/021:51:060
31980991056,70cyclictest0-21swapper/017:51:060
2176321040,27sleep03198099cyclictest17:31:110
31980991016,72cyclictest0-21swapper/017:06:070
225302950,5sleep13198499cyclictest20:40:531
3198099947,27cyclictest0-21swapper/016:41:060
3198099887,46cyclictest0-21swapper/018:51:070
77282840,2sleep30-21swapper/320:21:393
158902800,2sleep20-21swapper/217:16:042
3198099790,61cyclictest22495-21idleruntime-cro20:40:530
258032770,2sleep30-21swapper/318:47:473
3198099768,50cyclictest27671-21ls18:50:530
31980997656,5cyclictest32055-21apt-get16:30:590
89652740,2sleep10-21swapper/121:02:271
3198099746,50cyclictest0-21swapper/021:46:070
318342730,5sleep13198499cyclictest18:55:421
38712720,2sleep10-21swapper/119:00:531
31980997217,40cyclictest9-21ksoftirqd/020:16:070
31980997217,40cyclictest9-21ksoftirqd/020:16:070
3198099715,52cyclictest1055-21sed18:56:220
3198099711,28cyclictest0-21swapper/020:01:060
3199999701,6cyclictest7950irq/56-dwc_otg_18:26:073
3198099707,52cyclictest12422-21unixbench_multi21:06:220
31980996814,31cyclictest0-21swapper/019:06:170
3199299671,53cyclictest13415-21ssh20:29:292
3198099675,52cyclictest0-21swapper/021:31:120
3198099675,52cyclictest0-21swapper/021:31:120
31992996613,36cyclictest7950irq/56-dwc_otg_16:51:082
3199299651,51cyclictest32067-21munin-node16:31:032
3199299651,47cyclictest17432-21ssh19:55:302
3199299651,34cyclictest31730-21chrt17:58:472
3198099655,19cyclictest7843-21ssh21:41:060
3198099655,19cyclictest7843-21ssh21:41:060
3198099654,42cyclictest0-21swapper/021:26:070
3198099651,29cyclictest368150ssh21:36:070
31999996412,10cyclictest29316-21sed18:51:223
3199299641,48cyclictest22237-21ssh20:40:282
3198099649,35cyclictest17010-21ssh21:12:020
3198099648,46cyclictest32375-21ssh20:51:210
3198099642,31cyclictest3157-21latency_hist16:40:530
3199299631,51cyclictest25662-21ssh20:44:092
3199299631,51cyclictest22515-21ssh21:57:562
3199299631,51cyclictest22515-21ssh21:57:562
3199299631,43cyclictest6933-21ssh19:41:252
31980996310,35cyclictest17815-21wget17:21:070
3199999622,15cyclictest23163-21fschecks_time20:41:103
3199299621,43cyclictest6625-21ssh21:00:452
3199299621,41cyclictest9573-21awk18:26:182
31992996212,34cyclictest1411-21/usr/sbin/munin19:36:132
31980996216,24cyclictest10417-21diskmemload18:36:080
3198099621,45cyclictest30418-21/usr/sbin/munin17:56:070
3198099621,33cyclictest5155-21aten_rbpower_po16:46:080
3198099621,29cyclictest13533-21idleruntime-cro19:50:530
3198099621,29cyclictest13533-21idleruntime-cro19:50:530
3199999615,6cyclictest7950irq/56-dwc_otg_21:51:213
3199999611,6cyclictest7950irq/56-dwc_otg_17:21:213
3199299616,35cyclictest7950irq/56-dwc_otg_17:15:532
3199299616,35cyclictest7950irq/56-dwc_otg_17:15:532
3199299611,50cyclictest27321-21ssh19:27:182
3199299611,44cyclictest2342550ssh19:22:572
3198099619,37cyclictest23015-21run-parts18:45:220
31980996147,7cyclictest0-21swapper/021:20:260
3198099611,46cyclictest1690-21ssh19:36:090
3199999609,4cyclictest1350-21taskset19:35:573
3199299601,48cyclictest28667-21ssh18:51:142
3199299601,43cyclictest4344-21ssh20:18:022
3199299601,43cyclictest4344-21ssh20:18:022
3199299601,34cyclictest0-21swapper/221:51:312
3198099607,50cyclictest0-21swapper/018:06:070
3198099606,39cyclictest0-21swapper/019:55:330
3198099605,45cyclictest7244-21ls21:01:090
31980996036,5cyclictest26559-21grep20:06:100
3198099601,37cyclictest18202-21head19:16:220
3198099601,32cyclictest8023-21grep16:51:230
42442590,4sleep24242-21missed_timers21:36:142
3199299591,48cyclictest18430-21ssh18:39:482
3199299591,45cyclictest580-21ssh20:52:202
3199299591,44cyclictest32653-21ntp_states21:31:162
3199299591,44cyclictest32653-21ntp_states21:31:162
3199299591,40cyclictest16383-21ssh20:32:212
3198099597,36cyclictest7393-21ssh19:04:450
3198099596,43cyclictest3918-21cat20:56:200
3198099595,31cyclictest23873-21grep20:41:190
3198099592,39cyclictest11241-21rm20:26:180
3198099592,27cyclictest0-21swapper/019:41:210
3199299581,41cyclictest0-21swapper/221:26:042
3199299581,38cyclictest27782-21ssh20:06:442
3199299581,38cyclictest22170-21ssh20:01:072
3199299581,37cyclictest31964-21ssh20:11:482
3199299581,37cyclictest15018-21ssh19:13:092
3198099587,40cyclictest0-21swapper/020:35:350
3198099584,13cyclictest16578-21cron19:15:530
31980995814,41cyclictest101ktimersoftd/018:31:210
3198099580,42cyclictest6831-21latency_hist18:20:530
3199999575,9cyclictest7950irq/56-dwc_otg_17:56:153
3199999571,4cyclictest4898-21ntpq19:01:163
3199999571,15cyclictest0-21swapper/317:51:103
3199999571,14cyclictest0-21swapper/319:27:483
3199299572,41cyclictest0-21swapper/217:00:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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