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2025-12-04 - 12:03

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 Thu Dec 04, 2025 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312969910232,55cyclictest17635-21aten_rbpower_po23:25:260
312969910229,52cyclictest29354-21grep22:15:440
312969910025,58cyclictest30348-21idleruntime-cro23:00:120
31296999627,56cyclictest16502-21unixbench_singl22:40:410
31296999627,56cyclictest16502-21unixbench_singl22:40:410
31296999627,52cyclictest5403-21ps23:50:380
31296999520,59cyclictest10009-21aten_rbpower_vo19:40:260
31296999426,51cyclictest6255-21ls00:35:380
31296999326,49cyclictest0-21swapper/021:15:250
31296999315,64cyclictest0-21swapper/022:04:510
31296999124,41cyclictest18234-21fschecks_time21:20:320
118812910,2sleep111883-21rm00:00:101
118812910,2sleep111883-21rm00:00:101
31296999029,48cyclictest0-21swapper/000:30:240
31296999027,60cyclictest250050ssh23:05:320
31296999022,56cyclictest3013-21egrep20:50:280
261642900,5sleep33129999cyclictest23:35:403
261642900,5sleep33129999cyclictest23:35:403
31296998926,43cyclictest0-21swapper/022:35:130
31296998925,44cyclictest27033-21chrt23:36:380
31296998925,44cyclictest27033-21chrt23:36:380
31296998727,46cyclictest11734-21fschecks_time22:35:310
31296998633,31cyclictest27337-21ssh21:31:320
31296998632,34cyclictest15506-21seq00:04:440
31296998628,41cyclictest10003-21ssh23:56:170
31296998628,41cyclictest10003-21ssh23:56:170
31296998526,44cyclictest0-21swapper/022:10:260
31296998526,35cyclictest23238-21rm21:26:030
31296998525,48cyclictest0-21swapper/023:25:130
31296998524,44cyclictest22670-21apt20:15:220
31296998422,12cyclictest448-21dbus-daemon19:16:220
31296998327,43cyclictest31470-21ssh23:00:380
31296998325,44cyclictest13171-21sshd23:19:520
31296998228,39cyclictest16880-21taskset19:59:140
31296998227,42cyclictest9012-21ssh21:50:320
31296998224,43cyclictest20909-21timerwakeupswit00:10:430
31296998222,42cyclictest0-21swapper/022:29:360
31296998220,51cyclictest140-21systemd-journal23:46:280
271752820,1sleep20-21swapper/222:14:032
31296998130,14cyclictest25604-21unixbench_multi20:20:430
31296998126,41cyclictest5531-21ssh21:45:360
31296998125,44cyclictest1546-21sh00:30:010
31296998125,44cyclictest1546-21sh00:30:010
31296998125,43cyclictest24426-21rm23:34:120
31296998124,49cyclictest18294-21ssh00:07:370
31296998124,46cyclictest24818-21ssh00:15:570
31296998123,44cyclictest0-21swapper/021:56:010
31296998123,42cyclictest2434-21taskset20:47:460
31296998121,49cyclictest0-21swapper/021:37:210
31296998025,42cyclictest28863-21ssh00:21:540
31296998025,38cyclictest22451-21rm22:07:170
31296998024,44cyclictest1076-21ssh22:21:120
31296998022,46cyclictest0-21swapper/020:58:380
31296998018,50cyclictest0-21swapper/019:37:470
31296997933,27cyclictest13617-21ssh21:15:040
31296997925,40cyclictest14732-21seq19:51:100
31296997922,46cyclictest0-21swapper/019:24:240
31296997922,46cyclictest0-21swapper/019:24:240
3129699786,25cyclictest0-21swapper/020:30:260
31296997828,37cyclictest26199-21rm22:54:360
31296997817,49cyclictest0-21swapper/020:25:240
31296997722,41cyclictest20560-21taskset20:10:000
31296997722,39cyclictest0-21swapper/021:06:510
31296997628,36cyclictest31257-21sh23:42:180
31296997530,28cyclictest20598-21ssh22:45:580
31296997426,33cyclictest7606-21ssh23:11:300
31296997426,33cyclictest7606-21ssh23:11:300
31296997425,42cyclictest13150-21runrttasks19:48:550
31296997421,44cyclictest0-21swapper/021:42:130
31296997325,36cyclictest18541-21chrt20:02:210
31296997325,36cyclictest18541-21chrt20:02:210
31296997227,29cyclictest31203-21seq20:36:590
201172720,2sleep20-21swapper/221:22:342
31296997120,38cyclictest0-21swapper/019:35:060
3129999704,6cyclictest0-21swapper/300:30:243
31296997028,28cyclictest7743-21chrt21:01:220
31296997026,31cyclictest22204-21taskset20:13:030
31296997019,38cyclictest0-21swapper/020:42:410
9132690,1sleep30-21swapper/322:20:523
3129799699,8cyclictest0-21swapper/100:35:271
31296996929,28cyclictest5784-21taskset19:27:260
31296996821,36cyclictest32541-21chrt19:11:010
110482670,10sleep111050-21grep23:15:411
3129799642,6cyclictest0-21swapper/123:25:301
31299996311,7cyclictest7950irq/56-dwc_otg_22:15:283
3129799633,9cyclictest0-21swapper/120:40:251
3129799627,14cyclictest0-21swapper/120:10:121
3129799622,7cyclictest10977-21sed19:40:391
3129799621,5cyclictest20204-21chrt00:10:331
31297996212,6cyclictest26689-21latency_hist22:55:131
122462620,2sleep10-21swapper/119:45:321
3129899609,22cyclictest0-21swapper/220:40:252
3129799602,8cyclictest12251-21ssh00:00:261
3129799601,5cyclictest1676-21modprobe00:30:131
3129799601,5cyclictest1676-21modprobe00:30:131
3129799591,16cyclictest7950irq/56-dwc_otg_21:48:131
31298995821,16cyclictest6627-21ls00:35:442
3129799586,5cyclictest7750irq/56-dwc_otg21:15:351
3129799585,20cyclictest30684-21ssh23:00:271
3129799571,5cyclictest4065-21systemd-cgroups19:23:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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