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2025-08-29 - 12:02

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 Fri Aug 29, 2025 00:43:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2352022960,3sleep20-21swapper/219:10:052
2658721360,2sleep30-21swapper/322:24:583
2658721360,2sleep30-21swapper/322:24:583
2229421190,5sleep10-21swapper/119:05:271
67422970,2sleep00-21swapper/021:15:300
241722900,6sleep12355099cyclictest22:20:371
241722900,6sleep12355099cyclictest22:20:371
222732770,2sleep30-21swapper/323:00:493
218142770,4sleep231-21ksoftirqd/200:28:372
217522770,6sleep02354999cyclictest20:35:050
76952740,2sleep10-21swapper/119:55:251
2354999692,52cyclictest0-21swapper/021:50:250
148092680,2sleep20-21swapper/222:50:542
2355299678,4cyclictest0-21swapper/322:30:393
23550996719,17cyclictest22008-21latency21:35:291
2355099656,26cyclictest0-21swapper/100:15:191
23549996547,5cyclictest8150irq/56-dwc_otg_23:10:170
2354999652,54cyclictest0-21swapper/021:15:050
23549996524,26cyclictest21997-21aten_rbpower_cu20:35:200
23550996423,23cyclictest23246-21latency00:30:261
23549996414,10cyclictest20861-21rm23:00:170
2355299634,8cyclictest19151-21grep23:40:243
2355299632,4cyclictest8050irq/56-dwc_otg_21:25:173
2354999639,40cyclictest9-21ksoftirqd/000:10:160
2354999631,42cyclictest30237-21ssh21:45:380
2355299621,7cyclictest7950irq/56-dwc_otg22:00:283
2354999621,48cyclictest0-21swapper/022:50:240
23550996130,13cyclictest23387-21/usr/sbin/munin23:45:291
2354999611,57cyclictest0-21swapper/021:40:280
2355299608,5cyclictest0-21swapper/323:50:523
2355299606,15cyclictest0-21swapper/323:15:193
23550996024,20cyclictest17193-21ssh23:37:261
23550996023,20cyclictest25393-21/usr/sbin/munin19:15:191
23550996022,13cyclictest18251-21wc20:25:051
2354999602,54cyclictest27315-21fschecks_time22:25:230
2355299595,4cyclictest7950irq/56-dwc_otg19:20:363
23552995920,4cyclictest10363-21tune2fs21:20:273
2355299591,5cyclictest7950irq/56-dwc_otg23:20:373
2355299591,5cyclictest7950irq/56-dwc_otg23:20:373
23550995926,21cyclictest27748-21cut20:50:241
23550995924,18cyclictest21170-21/usr/sbin/munin20:30:341
23550995923,20cyclictest32504-21fschecks_time23:15:231
23550995920,25cyclictest0-21swapper/119:20:211
23550995918,13cyclictest17932-21grep22:55:321
23550995918,13cyclictest17932-21grep22:55:321
23550995917,26cyclictest13671-21fschecks_count22:50:241
2354999592,47cyclictest0-21swapper/022:06:510
23550995824,22cyclictest9186-21ssh22:44:491
23550995824,21cyclictest7495-21/usr/sbin/munin21:15:401
23550995818,27cyclictest0-21swapper/100:27:451
23549995820,30cyclictest15887-21fschecks_time22:10:220
23549995817,22cyclictest912-21runrttasks23:56:480
2355099577,11cyclictest7950irq/56-dwc_otg23:50:201
23550995727,22cyclictest19037-21ssh00:24:521
23550995724,15cyclictest11938-21ssh23:30:311
23550995724,13cyclictest18642-21ssh22:14:261
23550995723,11cyclictest8018-21wget22:00:191
23550995721,22cyclictest5380-21ssh00:05:161
2354999572,36cyclictest31057-21fschecks_count19:30:220
2354999571,38cyclictest19480-21seq00:25:200
225792570,1sleep00-21swapper/023:45:150
23550995621,24cyclictest3779-21/usr/sbin/munin19:45:301
23550995621,24cyclictest3779-21/usr/sbin/munin19:45:301
23550995619,12cyclictest20989-21awk21:35:051
23549995634,15cyclictest0-21swapper/023:40:340
2354999561,43cyclictest16199-21ssh00:20:240
2355299551,6cyclictest19084-21latency_hist22:15:053
23550995524,17cyclictest25384-21date20:45:051
23550995524,11cyclictest27890-21ssh23:09:391
23550995520,19cyclictest2760-21fschecks_time21:10:251
2354999555,33cyclictest10261-21ssh21:20:260
2354999552,41cyclictest0-21swapper/023:21:140
2354999552,41cyclictest0-21swapper/023:21:140
2354999552,41cyclictest0-21swapper/021:34:020
264592540,2sleep00-21swapper/022:24:430
264592540,2sleep00-21swapper/022:24:430
23550995425,12cyclictest28374-21ssh00:38:521
23550995423,14cyclictest32301-21taskset19:34:151
23550995420,20cyclictest17107-21ssh21:29:571
23550995419,17cyclictest22508-21chrt23:01:191
2354999548,34cyclictest0-21swapper/021:35:060
23549995433,5cyclictest8150irq/56-dwc_otg_20:50:050
2355299533,6cyclictest8150irq/56-dwc_otg_20:25:053
23550995325,11cyclictest974-21ssh22:33:241
23550995323,15cyclictest0-21swapper/119:40:171
23550995322,12cyclictest18786-21apt-get23:40:171
23550995318,13cyclictest3804-21ssh23:20:231
23550995318,13cyclictest3804-21ssh23:20:231
23550995317,15cyclictest11040-21basename20:05:201
23550995316,22cyclictest8992-21ssh23:26:171
23550995316,15cyclictest9836-21grep00:10:311
2354999536,35cyclictest0-21swapper/023:10:050
23549995336,4cyclictest9237-21grep22:00:350
23549995334,6cyclictest8050irq/56-dwc_otg_00:30:230
2354999532,40cyclictest8516-21unixbench-2d23:25:350
2354999532,23cyclictest0-21swapper/000:15:180
2354999531,40cyclictest7670-21ssh22:00:050
2354999531,39cyclictest0-21swapper/000:00:120
231102533,14sleep30-21swapper/319:08:013
23550995226,13cyclictest13359-21ssh22:06:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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