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2025-11-25 - 10:06

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Tue Nov 25, 2025 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10774412710,4sleep01077434-21ntpq20:26:230
997285997064,4cyclictest1158320-21kworker/u8:2+events_unbound21:51:271
997285996761,4cyclictest1232389-21kworker/u8:2+flush-8:023:16:241
997285996760,5cyclictest1183057-21kworker/u8:1+events_unbound23:26:231
997285996757,7cyclictest1075544-21apt-get20:26:191
997285996352,7cyclictest1127981-21latency_hist21:20:011
997282996242,17cyclictest1138104-21latency_hist21:30:010
12725842620,3chrt586-21kworker/3:2-events23:46:113
12725842620,3chrt586-21kworker/3:2-events23:46:113
997285996156,3cyclictest1183057-21kworker/u8:1+flush-8:022:36:271
997285996155,5cyclictest945057-21kworker/u8:3+flush-8:019:21:221
997285996054,5cyclictest160499-21kworker/u8:0+flush-8:021:31:241
997285996054,4cyclictest1158320-21kworker/u8:2+events_unbound22:01:251
997285996052,6cyclictest1118315-21kworker/u8:3+flush-8:021:36:251
997285996050,7cyclictest1167987-21latency_hist22:00:011
997285995847,8cyclictest1177054-21ntpq22:06:221
997285995752,3cyclictest1108430-21kworker/u8:1+events_unbound21:06:231
997285995750,5cyclictest1272396-21kworker/u8:3+flush-8:023:51:241
997285995652,3cyclictest1118315-21kworker/u8:3+events_unbound22:51:271
997285995652,3cyclictest1118315-21kworker/u8:3+events_unbound22:51:271
997285995651,4cyclictest1212844-21kworker/u8:0+flush-8:023:11:241
997285995651,3cyclictest160499-21kworker/u8:0+events_unbound20:01:161
997285995650,4cyclictest1183057-21kworker/u8:1+flush-8:022:56:281
11779822560,3sleep00-21swapper/022:10:010
997285995551,3cyclictest997417-21kworker/u8:1+events_unbound19:36:271
997285995550,4cyclictest945057-21kworker/u8:3+events_unbound20:36:121
997285995549,5cyclictest945057-21kworker/u8:3+flush-8:020:16:251
997285995547,6cyclictest1316938-21kworker/u8:1+flush-8:000:31:261
997282995535,17cyclictest1122218-21ntpq21:11:250
997282995531,21cyclictest1113731-21diskstats21:06:130
10702622550,6sleep30-21swapper/320:21:203
997285995449,4cyclictest160499-21kworker/u8:0+flush-8:020:46:241
997285995449,3cyclictest1108430-21kworker/u8:1+events_unbound21:01:201
997285995447,5cyclictest160499-21kworker/u8:0+flush-8:019:51:231
997285995445,7cyclictest1158320-21kworker/u8:2+flush-8:022:11:231
997282995434,18cyclictest1032887-21ntpq19:41:240
997282995434,18cyclictest1032887-21ntpq19:41:240
11834032540,3sleep2371rcuc/222:16:132
997285995348,4cyclictest945057-21kworker/u8:3+events_unbound19:56:211
997285995347,5cyclictest160499-21kworker/u8:0+flush-8:020:56:251
997285995347,4cyclictest1043835-21kworker/u8:2+events_unbound20:06:211
997285995247,3cyclictest1118315-21kworker/u8:3+events_unbound22:41:231
997285995243,7cyclictest1183139-21/usr/sbin/munin22:16:221
997285995242,8cyclictest1092318-21ntpq20:41:241
997285995146,3cyclictest1212844-21kworker/u8:0+flush-8:023:56:301
997285995146,3cyclictest1212844-21kworker/u8:0+flush-8:023:56:301
997285995046,3cyclictest1272396-21kworker/u8:3+events_unbound00:21:251
997285995042,6cyclictest1183057-21kworker/u8:1+events_unbound23:31:241
997285995040,8cyclictest1023101-21ntpq19:31:261
997285994943,4cyclictest1272396-21kworker/u8:3+events_unbound00:26:231
997285994842,5cyclictest997417-21kworker/u8:1+flush-8:019:26:251
997285994842,4cyclictest1212844-21kworker/u8:0+flush-8:000:16:241
997285994841,5cyclictest1212844-21kworker/u8:0+flush-8:023:01:251
997285994841,5cyclictest1212844-21kworker/u8:0+flush-8:000:11:251
997285994743,3cyclictest1232389-21kworker/u8:2+events_unbound23:25:001
997285994742,3cyclictest160499-21kworker/u8:0+events_unbound21:25:011
997285994641,4cyclictest160499-21kworker/u8:0+flush-8:020:51:221
997285994640,5cyclictest1282519-21kworker/u8:2+flush-8:000:01:231
997285994639,5cyclictest1183057-21kworker/u8:1+flush-8:023:06:241
997285994639,5cyclictest1183057-21kworker/u8:1+flush-8:022:26:241
997285994540,3cyclictest1271297-21ntpq23:41:221
997285994540,3cyclictest1271297-21ntpq23:41:221
997285994539,5cyclictest1043835-21kworker/u8:2+flush-8:020:21:191
997285994539,4cyclictest160499-21kworker/u8:0+flush-8:019:16:141
997285994538,5cyclictest1212844-21kworker/u8:0+flush-8:023:46:241
997285994538,5cyclictest1212844-21kworker/u8:0+flush-8:023:46:241
997282994535,8cyclictest1252948-21diskstats23:26:140
997285994440,3cyclictest1118315-21kworker/u8:3+events_unbound22:35:001
997285994438,4cyclictest997417-21kworker/u8:1+flush-8:019:41:251
997285994438,4cyclictest997417-21kworker/u8:1+flush-8:019:41:251
997282994437,5cyclictest1157008-21ntpq21:46:240
997282994430,9cyclictest282-21systemd-journal00:01:190
997282994426,16cyclictest829-21mta-sts-daemon22:35:000
997285994338,4cyclictest160499-21kworker/u8:0+events_unbound21:41:171
997285994338,4cyclictest1118315-21kworker/u8:3+flush-8:021:26:281
997285994338,3cyclictest1232389-21kworker/u8:2+flush-8:023:36:201
997285994334,7cyclictest997132-21latency_hist19:10:011
997282994333,7cyclictest282-21systemd-journal20:24:590
997282994324,16cyclictest1163050-21latency_hist21:55:010
997287994235,5cyclictest1297217-21cat00:10:012
997285994235,5cyclictest160499-21kworker/u8:0+events_unbound21:46:141
997282994233,7cyclictest1102997-21apt-get20:55:010
997282994223,17cyclictest1312280-21munin-plugin-st00:25:010
997282994223,16cyclictest1058416-21cron20:10:000
997285994135,5cyclictest997417-21kworker/u8:1+flush-8:019:11:251
997282994122,17cyclictest1043223-21unixbench_multi19:51:310
997282994119,8cyclictest1282627-21apt-get23:56:100
997282994119,8cyclictest1282627-21apt-get23:56:090
997282994119,3cyclictest1128302-21latency_hist21:20:010
997285994036,3cyclictest1043835-21kworker/u8:2+events_unbound20:11:241
997285994034,4cyclictest1118315-21kworker/u8:3+flush-8:021:11:191
997282994022,16cyclictest1009004-21cron19:20:000
997282994022,16cyclictest0-21swapper/023:31:150
997282994019,3cyclictest1083232-21idleruntime-cro20:35:000
997282994018,4cyclictest0-21swapper/021:36:190
997282994017,7cyclictest1317201-21cron00:30:010
99728299401,17cyclictest587-21runrttasks00:06:110
997285993934,4cyclictest1043835-21kworker/u8:2+flush-8:020:31:281
997282993918,8cyclictest1067495-21ntpq20:16:270
997287993830,5cyclictest1277126-21apt-get23:50:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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