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2026-08-06 - 10:27

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #7

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.

Note that this system runs a non-RT kernel.
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 50 highest latencies:
System rackbslot7s.osadl.org (updated Thu Aug 06, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
84502367011,3647sleep25245-21kworker/2:120:49:582
10711211477,1128sleep110742-21unin-run22:42:231
27088273721,701sleep227094-21df_inode23:32:412
777625459,501sleep17814-21ntpq20:47:471
2162623856,368sleep07700-1kworker/0:1H21:32:350
7557236017,325sleep27572-21apt22:32:222
166222296116,54sleep116767-21grep22:57:571
1565122799,256sleep115688-21sed22:57:241
1565122799,256sleep115688-21sed22:57:241
29189227725,222sleep129320-21grep23:37:531
3137822719,247sleep131419-21ntpq22:02:471
315712254100,136sleep17846-21cyclictest20:22:241
1595223724,193sleep11749-21unixbench_multi20:27:531
8845223612,209sleep07700-1kworker/0:1H00:17:350
7852223481,64sleep17853-21cpu22:32:381
7852223481,64sleep17853-21cpu22:32:381
7804223315,199sleep10-21swapper/119:07:251
13579222033,62sleep113469-21/usr/sbin/munin00:32:421
26487221619,180sleep326510-21idleruntime-cro23:32:223
13708221663,18sleep10-21swapper/121:07:411
26211221144,24sleep10-21swapper/120:02:591
3182220747,142sleep13330-21unixbench_singl20:32:541
29060220737,31sleep10-21swapper/120:12:481
24518220716,173sleep124593-21latency_hist21:42:251
25155220219,161sleep10-21swapper/121:42:491
29108219712,164sleep129159-21sendmail21:57:221
29108219712,164sleep129159-21sendmail21:57:221
1249219515,165sleep11311-21processes23:52:501
32370218783,60sleep10-21swapper/120:22:531
15272218219,110sleep10-21swapper/119:27:511
32513218111,154sleep131662-21/usr/sbin/munin23:47:541
9377216913,73sleep10-21swapper/119:12:251
9377216913,73sleep10-21swapper/119:12:251
21155216910,136sleep121181-21munin-run21:32:231
16845216314,134sleep116931-21timerandwakeup19:32:521
16845216314,134sleep116931-21timerandwakeup19:32:521
19635216216,133sleep119724-21latency19:42:451
545216020,126sleep1610-21grep22:07:511
545216020,126sleep1610-21grep22:07:511
19639215513,38sleep10-21swapper/123:07:541
12433215549,28sleep10-21swapper/119:17:541
14403215412,92sleep11-21systemd19:27:231
972521500,85sleep10-21swapper/120:52:551
282021498,67sleep10-21swapper/123:57:511
18389214940,72sleep118402-21fschecks_count21:22:431
18389214940,72sleep118402-21fschecks_count21:22:431
10578214414,76sleep10-21swapper/100:22:411
10578214414,76sleep10-21swapper/100:22:411
5462214213,87sleep15503-21grep00:07:351
1243521379,78sleep112471-21ntpq21:02:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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