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2026-07-08 - 23:26

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Wed Jul 08, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3441211695,16sleep00-21swapper/007:09:440
3284210897,6sleep20-21swapper/207:07:502
3434210587,12sleep30-21swapper/307:09:393
162129579,10sleep10-21swapper/107:05:051
221582760,2sleep219928-21diskmemload11:31:012
279062690,0sleep30-21swapper/309:53:143
36382530,1sleep10-21swapper/109:26:111
322642270,0sleep10-21swapper/111:07:151
349099224,2cyclictest0-21swapper/109:24:041
349099223,2cyclictest0-21swapper/110:39:041
349099220,5cyclictest0-21swapper/111:25:041
349099212,2cyclictest0-21swapper/109:18:051
349099210,4cyclictest0-21swapper/110:32:011
349099210,4cyclictest0-21swapper/109:02:041
3491992017,2cyclictest32271-21kworker/u8:009:17:042
3491992017,2cyclictest22839-21kworker/u8:210:57:042
349099200,3cyclictest0-21swapper/112:32:011
349099200,3cyclictest0-21swapper/108:54:041
349099200,3cyclictest0-21swapper/107:45:041
349099200,2cyclictest0-21swapper/110:00:111
3491991916,2cyclictest32271-21kworker/u8:009:12:052
349099192,2cyclictest0-21swapper/108:29:041
349099191,2cyclictest0-21swapper/111:57:041
349099191,17cyclictest0-21swapper/108:35:041
349099190,5cyclictest0-21swapper/111:30:011
349099190,2cyclictest0-21swapper/110:28:041
349099190,2cyclictest0-21swapper/109:50:051
349099190,2cyclictest0-21swapper/107:42:041
3491991815,2cyclictest17918-21kworker/u8:209:42:052
349099182,2cyclictest0-21swapper/107:17:041
349099181,2cyclictest0-21swapper/111:46:011
349099180,2cyclictest0-21swapper/111:37:041
3493991714,2cyclictest29823-21ssh12:15:113
3493991714,2cyclictest12-21rcu_preempt11:00:103
349399170,12cyclictest0-21swapper/311:47:043
349399170,12cyclictest0-21swapper/309:21:043
3491991714,2cyclictest11059-21kworker/u8:009:49:042
349099170,3cyclictest0-21swapper/108:04:051
349099170,2cyclictest0-21swapper/108:40:041
55482160,0sleep30-21swapper/310:04:163
349399161,13cyclictest27691-21ssh12:11:553
349399160,11cyclictest0-21swapper/308:17:043
3491991613,2cyclictest605-21kworker/u8:210:14:042
3491991613,2cyclictest32271-21kworker/u8:009:29:042
3491991613,2cyclictest28807-21kworker/u8:011:42:042
3491991613,2cyclictest14463-21kworker/u8:011:27:042
349199161,13cyclictest30097-21cut12:15:132
349199160,14cyclictest0-21swapper/208:50:122
349099161,13cyclictest0-21swapper/108:20:111
262472160,1sleep226250-21proc_pri12:10:182
349399151,12cyclictest6235-21diskstats07:15:143
349399150,13cyclictest0-21swapper/312:30:353
349399150,13cyclictest0-21swapper/311:59:043
349399150,13cyclictest0-21swapper/311:09:043
349399150,13cyclictest0-21swapper/310:50:183
349399150,11cyclictest0-21swapper/310:22:043
349399150,10cyclictest0-21swapper/311:18:043
349399150,10cyclictest0-21swapper/310:19:043
349399150,10cyclictest0-21swapper/308:50:043
349399150,10cyclictest0-21swapper/307:52:013
3491991512,2cyclictest32271-21kworker/u8:009:23:042
3491991512,2cyclictest32271-21kworker/u8:009:06:042
3491991512,2cyclictest32271-21kworker/u8:009:01:042
3491991512,2cyclictest28122-21kworker/u8:011:03:042
3491991512,2cyclictest23777-21kworker/u8:108:15:052
3491991512,2cyclictest15687-21kworker/u8:111:08:052
3491991512,2cyclictest11059-21kworker/u8:009:52:042
349199150,13cyclictest0-21swapper/212:31:042
349099157,6cyclictest23-21ksoftirqd/109:07:591
3490991510,3cyclictest29643-21latency_hist12:15:001
3490991510,3cyclictest11793-21irqstats09:35:171
348999151,12cyclictest20054-21apt-get09:45:120
77492140,2sleep20-21swapper/209:30:472
3493991411,2cyclictest0-21swapper/312:36:243
3493991411,2cyclictest0-21swapper/308:01:043
349399140,9cyclictest0-21swapper/311:20:043
349399140,9cyclictest0-21swapper/309:00:043
349399140,9cyclictest0-21swapper/308:08:043
349399140,9cyclictest0-21swapper/307:57:043
349399140,2cyclictest0-21swapper/309:40:003
349399140,12cyclictest18528-21ssh12:02:083
349399140,12cyclictest0-21swapper/310:34:043
349399140,12cyclictest0-21swapper/309:58:153
349199142,2cyclictest0-21swapper/210:06:012
3491991411,2cyclictest6604-21kworker/u8:012:07:042
3491991411,2cyclictest6488-21kworker/u8:110:16:052
3491991411,2cyclictest23777-21kworker/u8:108:33:042
3491991411,2cyclictest23777-21kworker/u8:108:23:042
3491991411,2cyclictest20640-21kworker/u8:212:23:042
3491991411,2cyclictest20571-21kworker/u8:112:01:042
3491991411,2cyclictest20571-21kworker/u8:111:58:042
3491991411,2cyclictest16126-21kworker/u8:112:37:042
3491991411,2cyclictest15687-21kworker/u8:110:51:042
3491991411,2cyclictest15589-21kworker/u8:010:49:042
349199140,3cyclictest0-21swapper/210:37:172
349099149,3cyclictest10127-21cpuspeed_turbos07:25:141
349099142,7cyclictest0-21swapper/110:55:001
349099142,6cyclictest19928-21diskmemload11:40:001
349099142,6cyclictest0-21swapper/112:25:001
349099140,2cyclictest0-21swapper/110:23:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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