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2026-04-03 - 21:17

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 100 highest latencies:
System rackbslot7s.osadl.org (updated Fri Apr 03, 2026 12:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
181321785925,17815sleep212406-21kworker/u8:207:12:432
18469215149,1493sleep317375-21kworker/3:209:44:413
2839828475,831sleep028051-1kworker/0:2H08:37:180
18431254210,518sleep118467-21ntpq11:27:231
19266249022,450sleep219272-21/usr/sbin/munin08:07:312
631524017,383sleep013441-21snmpd10:48:220
631524017,383sleep013441-21snmpd10:48:220
12329234813,222sleep012458-21latency_hist07:47:020
28764227216,241sleep228771-21ntp_states10:17:272
28764227216,241sleep228771-21ntp_states10:17:272
265022271102,55sleep00-21swapper/011:52:260
265022271102,55sleep00-21swapper/011:52:260
20058224918,217sleep320106-21unin-run08:12:003
1516122466,12sleep00-21swapper/007:54:170
22026223924,155sleep022116-21fschecks_time08:17:190
22026223924,155sleep022116-21fschecks_time08:17:190
2485223630,22sleep031713-21cyclictest08:57:170
203192234108,71sleep00-21swapper/008:12:100
1388022320,19sleep031713-21cyclictest07:52:010
15288223115,193sleep015313-21munin-plugin-st09:36:580
16247222115,150sleep016217-21latency_hist11:22:010
684722149,19sleep00-21swapper/007:27:270
109921960,110sleep31103-21kworker/u8:112:16:593
2792121857,79sleep00-21swapper/010:16:120
2792121857,79sleep00-21swapper/010:16:120
13998218418,142sleep00-21swapper/011:12:280
13248218220,146sleep113376-21unixbench_multi07:47:311
19080218115,60sleep00-21swapper/009:47:200
21028217922,139sleep121183-21grep08:12:311
22803217722,137sleep122909-21tune2fs11:42:171
2348221737,152sleep023534-21sort08:22:150
2348221737,152sleep023534-21sort08:22:150
301412171108,44sleep00-21swapper/008:42:180
688621709,143sleep00-21swapper/010:52:130
688621709,143sleep00-21swapper/010:52:130
3156421647,37sleep00-21swapper/010:27:100
1317121615,12sleep00-21swapper/009:27:460
1317121615,12sleep00-21swapper/009:27:460
1150721615,11sleep00-21swapper/011:06:510
1929215827,78sleep01932-21cron10:36:590
8466215194,35sleep18471-21cpu10:57:151
1426214911,123sleep01438-21munin-node07:12:080
1323214827,99sleep00-21swapper/008:52:490
8385214610,119sleep01-21systemd09:17:000
3750214618,104sleep23829-21mailstats07:17:282
3325214113,27sleep20-21swapper/212:22:242
1161213932,55sleep01117-21latency_hist12:17:010
32028213752,73sleep01-21systemd12:12:000
807521368,111sleep00-21swapper/007:32:200
30292213612,102sleep00-21swapper/010:22:210
30292213612,102sleep00-21swapper/010:22:210
387621345,10sleep00-21swapper/012:22:380
5010213215,91sleep00-21swapper/012:27:270
5010213215,91sleep00-21swapper/012:27:270
316121326,11sleep00-21swapper/010:37:360
29778213121,89sleep20-21swapper/212:02:292
26844213117,14sleep00-21swapper/008:32:210
985521295,12sleep00-21swapper/009:18:010
2173221275,12sleep00-21swapper/009:56:490
2565621265,13sleep00-21swapper/011:50:440
2565621265,13sleep00-21swapper/011:50:440
3249521256,85sleep00-21swapper/008:48:370
1732421258,62sleep00-21swapper/008:02:160
3331212414,94sleep03365-21cut07:17:170
5507212228,51sleep00-21swapper/009:07:100
525521227,103sleep05289-21ps07:22:260
29510212227,61sleep029408-21apt-get10:19:310
29510212227,61sleep029408-21apt-get10:19:310
5211212117,69sleep00-21swapper/009:06:460
3049211915,88sleep12948-21latency_hist07:17:021
2270621178,49sleep00-21swapper/011:42:120
30541211614,82sleep030599-21/usr/sbin/munin07:02:200
859321150,9sleep28589-21latency_hist09:17:012
485521145,57sleep00-21swapper/010:44:300
485521145,57sleep00-21swapper/010:44:300
27620211422,14sleep00-21swapper/011:57:140
1587521149,68sleep015937-21cat07:57:200
1587521149,68sleep015937-21cat07:57:200
247121136,56sleep00-21swapper/012:19:270
16290211322,50sleep00-21swapper/009:37:510
501211227,60sleep2669-21sed12:12:312
426211227,58sleep30-21swapper/310:32:013
15315211216,78sleep115380-21apt-config09:37:001
25171211118,52sleep00-21swapper/010:07:150
25171211118,52sleep00-21swapper/010:07:150
1076921117,53sleep010779-21munin-run07:42:010
3029921105,70sleep00-21swapper/012:05:180
18038210734,50sleep00-21swapper/011:27:140
25724210516,73sleep325804-21sed10:07:303
25724210516,73sleep325804-21sed10:07:303
14795210416,71sleep314956-21awk07:52:303
11977210418,28sleep00-21swapper/011:07:200
17337210323,57sleep217400-21fschecks_time08:02:182
1266210311,74sleep21309-21/usr/sbin/munin08:52:472
341210214,71sleep1437-21dpkg08:52:011
27402210215,69sleep227564-21sed10:12:302
27402210215,69sleep227564-21sed10:12:302
23242210220,66sleep223368-21latency_hist08:22:012
23242210220,66sleep223368-21latency_hist08:22:012
626221018,81sleep00-21swapper/012:32:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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