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2026-06-03 - 23:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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.
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 rackeslot3s.osadl.org (updated Wed Jun 03, 2026 12:45:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2859521998870,15cyclictest30-21ksoftirqd/207:25:022
2859512997459,11cyclictest2915122-21run-parts11:00:000
2859512997459,11cyclictest2915122-21run-parts11:00:000
285951299741,11cyclictest121ksoftirqd/011:40:000
285951299681,42cyclictest0-21swapper/010:11:320
2859512996711,39cyclictest16950irq/224-800000010:25:010
2859512996525,10cyclictest2876922-21ssh09:35:020
285952399649,13cyclictest37-21ksoftirqd/311:50:013
2859521996438,7cyclictest2876907-21kworker/2:210:47:142
2859523996318,9cyclictest131rcu_preempt11:54:453
2859523996222,9cyclictest131rcu_preempt09:12:013
2859512996224,33cyclictest2939939-21latency_hist11:55:020
2859523996119,11cyclictest37-21ksoftirqd/311:09:223
285951299618,34cyclictest2859515-21latency_hist07:10:020
285951299618,34cyclictest2859515-21latency_hist07:10:010
2859512996128,29cyclictest12-21ksoftirqd/012:11:020
2859512996117,40cyclictest12-21ksoftirqd/010:44:170
2859512996111,45cyclictest131rcu_preempt11:42:430
2859523996022,9cyclictest131rcu_preempt07:45:033
285951799601,38cyclictest2861305-21kworker/u8:308:40:011
285951799601,29cyclictest2910882-21kworker/u8:110:55:021
285951799601,29cyclictest2910882-21kworker/u8:110:55:011
285951299606,7cyclictest12-21ksoftirqd/009:15:010
285952399595,16cyclictest2909175-21ssh10:46:323
2859523995918,10cyclictest131rcu_preempt10:40:153
2859521995944,5cyclictest2852098-21kworker/2:107:20:002
285951299598,34cyclictest151rcuc/011:30:030
285952399585,8cyclictest37-21ksoftirqd/312:32:103
2859523995814,11cyclictest0-21swapper/312:01:153
2859523995812,10cyclictest37-21ksoftirqd/311:30:013
2859517995851,4cyclictest23-21ksoftirqd/109:55:011
2859512995832,5cyclictest131rcu_preempt10:06:290
2859512995811,6cyclictest131rcu_preempt09:45:010
2859523995716,9cyclictest37-21ksoftirqd/310:35:353
2859523995716,9cyclictest37-21ksoftirqd/310:35:353
2859523995710,9cyclictest37-21ksoftirqd/310:25:483
2859523995710,9cyclictest37-21ksoftirqd/310:25:483
2859523995710,8cyclictest37-21ksoftirqd/311:25:013
2859521995748,6cyclictest2865495-21kworker/2:309:39:312
2859521995748,6cyclictest2865495-21kworker/2:309:39:312
285952399568,12cyclictest37-21ksoftirqd/312:37:443
285952399566,7cyclictest37-21ksoftirqd/310:17:113
285952399565,13cyclictest37-21ksoftirqd/311:20:013
2859523995615,7cyclictest37-21ksoftirqd/309:46:283
2859523995615,7cyclictest37-21ksoftirqd/309:46:273
2859523995614,7cyclictest37-21ksoftirqd/311:40:133
2859523995614,7cyclictest37-21ksoftirqd/311:40:023
285951299569,13cyclictest12-21ksoftirqd/009:40:010
285951299569,13cyclictest12-21ksoftirqd/009:40:000
2859512995617,34cyclictest309-21in:imuxsock09:10:020
285952399557,11cyclictest37-21ksoftirqd/307:50:023
285952399554,11cyclictest37-21ksoftirqd/312:19:023
2859523995514,8cyclictest37-21ksoftirqd/309:20:013
2859523995513,9cyclictest37-21ksoftirqd/311:14:243
2859523995511,8cyclictest37-21ksoftirqd/310:53:573
2859512995548,5cyclictest12-21ksoftirqd/009:02:300
285952399549,9cyclictest37-21ksoftirqd/311:59:363
285952399547,9cyclictest37-21ksoftirqd/312:05:563
285952399546,11cyclictest37-21ksoftirqd/310:05:033
285952399545,9cyclictest37-21ksoftirqd/310:00:023
285952399544,10cyclictest37-21ksoftirqd/309:43:113
2859523995431,18cyclictest275-21dbus-daemon09:10:013
2859523995415,7cyclictest37-21ksoftirqd/310:25:023
2859523995411,8cyclictest0-21swapper/310:12:593
2859512995424,13cyclictest2918149-21ssh11:06:170
2859512995419,10cyclictest12-21ksoftirqd/011:14:100
2859512995416,34cyclictest12-21ksoftirqd/009:45:320
2859512995416,34cyclictest12-21ksoftirqd/009:45:310
2859512995415,21cyclictest16850irq/134-800000012:00:030
285951299541,42cyclictest12-21ksoftirqd/009:55:580
285951299541,38cyclictest2871847-21ssh09:23:330
285952399538,9cyclictest37-21ksoftirqd/308:40:013
285952399537,10cyclictest37-21ksoftirqd/312:20:283
285952399536,12cyclictest37-21ksoftirqd/311:35:023
285952399535,9cyclictest37-21ksoftirqd/309:29:083
2859523995317,10cyclictest37-21ksoftirqd/309:20:243
2859523995311,14cyclictest37-21ksoftirqd/312:10:253
2859521995344,5cyclictest2876907-21kworker/2:211:16:432
2859521995343,6cyclictest2859735-21kworker/2:208:16:512
285951299532,29cyclictest3467602-21systemd-journal09:29:200
2859512995315,34cyclictest151rcuc/010:05:010
2859512995314,34cyclictest16850irq/134-800000011:34:450
285951299531,16cyclictest2955543-21latency_hist12:30:020
285952399528,9cyclictest2875488-21ssh09:31:343
2859521995235,12cyclictest275-21dbus-daemon08:35:012
2859521995235,12cyclictest275-21dbus-daemon08:35:002
2859512995240,9cyclictest12-21ksoftirqd/010:46:280
2859512995224,13cyclictest2950771-21ssh12:19:270
2859512995215,10cyclictest12-21ksoftirqd/010:50:160
2859512995214,12cyclictest12-21ksoftirqd/012:10:020
2859512995212,28cyclictest131rcu_preempt12:37:520
285952399519,9cyclictest37-21ksoftirqd/309:38:153
285952399519,9cyclictest37-21ksoftirqd/309:38:153
285952399515,9cyclictest37-21ksoftirqd/310:31:113
285952399514,8cyclictest37-21ksoftirqd/308:05:013
2859523995143,4cyclictest0-21swapper/307:10:023
2859523995143,4cyclictest0-21swapper/307:10:013
2859521995143,5cyclictest2953254-21kworker/2:212:36:592
2859521995143,5cyclictest2876907-21kworker/2:210:04:322
2859521995143,5cyclictest2876907-21kworker/2:209:58:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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