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2025-11-20 - 18:09

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 Thu Nov 20, 2025 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
84132614620,6113sleep03702-21kworker/0:008:46:220
23424262436,574sleep123472-21unin-run11:18:451
20762253415,503sleep220820-21/usr/sbin/munin11:09:052
2198324088,387sleep122019-21ntpq09:29:061
2198324088,387sleep122019-21ntpq09:29:061
29496235513,324sleep029599-21/usr/sbin/munin08:09:320
19394234119,309sleep119432-21fschecks_count07:39:161
11651233836,289sleep111692-21ntpq07:14:091
76802313102,186sleep17786-21timerandwakeup12:09:161
51272279104,63sleep15346-21latency_hist12:03:471
25650225112,220sleep125688-21fschecks_time07:59:071
25650225112,220sleep125688-21fschecks_time07:59:071
32752224335,35sleep10-21swapper/110:03:591
19019224130,28sleep10-21swapper/107:38:481
10089223412,208sleep010127-21ntpq10:34:100
2412221591,27sleep10-21swapper/108:28:461
13401221313,179sleep113509-21timerandwakeup10:44:171
9778221017,178sleep09803-21fschecks_count07:09:070
9778221017,178sleep09803-21fschecks_count07:09:070
2927220242,26sleep12630-21/usr/sbin/munin08:29:111
11512220211,176sleep011562-21sed10:39:070
5191219964,27sleep10-21swapper/110:19:051
30406217718,99sleep10-21swapper/111:39:161
25799217110,146sleep025870-21sensors11:24:170
1307121709,115sleep113175-21latency_hist12:28:461
2845421689,102sleep10-21swapper/109:49:171
4811216610,144sleep14870-21latency_hist10:18:491
28148216511,138sleep128288-21latency_hist11:33:471
1156321617,32sleep10-21swapper/110:39:081
744821508,94sleep17464-21vmstat10:24:181
744821508,94sleep17464-21vmstat10:24:181
29802214941,89sleep10-21swapper/109:54:101
30133214711,28sleep130174-21basename08:13:441
22097214712,86sleep1284-21dbus-daemon07:48:451
31249214611,120sleep331210-21apt-get09:59:203
1185214518,108sleep21279-21cut08:24:032
11273214339,87sleep111348-21mailstats08:54:511
11273214339,87sleep111348-21mailstats08:54:511
1525321424,14sleep30-21swapper/310:49:193
10923214016,102sleep10-21swapper/110:38:231
7395213930,88sleep37435-21idleruntime-cro07:03:453
624021369,84sleep16276-21ps08:39:121
624021369,84sleep16276-21ps08:39:121
3266021349,114sleep1362-21snmpd11:47:361
7092213014,93sleep03919-21kworker/u8:008:43:470
7092213014,93sleep03919-21kworker/u8:008:43:470
31464212919,91sleep231483-21apt-get11:43:572
3169221276,10sleep10-21swapper/108:18:291
937421268,11sleep10-21swapper/110:33:431
2484821258,106sleep1362-21snmpd11:22:081
20665212417,80sleep120759-21fschecks_time11:09:041
365212313,95sleep2394-21sh10:04:042
17364212313,95sleep117407-21ntp_kernel_pll_09:14:091
9590211818,64sleep10-21swapper/112:14:331
19263211619,76sleep018773-21apt-get07:38:550
13301211639,61sleep113367-21sendmail_mailqu07:19:131
11694211611,79sleep211726-21ntp_states07:14:102
16289211216,76sleep30-21swapper/309:09:223
2110621117,29sleep10-21swapper/109:25:511
2110621117,29sleep10-21swapper/109:25:511
1691621106,12sleep10-21swapper/110:55:151
14989210910,81sleep10-21swapper/107:24:181
10831210918,65sleep00-21swapper/008:54:370
10831210918,65sleep00-21swapper/008:54:370
6593210818,68sleep10-21swapper/106:59:111
26568210815,41sleep10-21swapper/111:28:461
162621085,36sleep10-21swapper/111:50:511
9372210749,43sleep19437-21ps08:49:221
13785210711,75sleep10-21swapper/112:29:141
1069721075,29sleep10-21swapper/107:10:331
1069721075,29sleep10-21swapper/107:10:331
1593021057,50sleep115920-21apt-get07:29:031
23202210443,43sleep10-21swapper/109:34:031
19506210310,75sleep10-21swapper/111:04:111
19506210310,75sleep10-21swapper/111:04:111
27541210219,63sleep327048-21/usr/sbin/munin08:04:143
14799210211,79sleep014802-21ntp_states10:49:120
773821019,78sleep37782-21ntp_offset08:44:113
5915210130,55sleep10-21swapper/112:04:271
32749210120,65sleep032761-21modprobe11:48:440
29426210118,68sleep029479-21ls09:54:000
17733210111,39sleep10-21swapper/110:59:061
17733210111,39sleep10-21swapper/110:59:061
1459210014,66sleep30-21swapper/311:49:153
3179429811,68sleep331947-21latency_hist08:18:473
2773829815,58sleep326786-21/usr/sbin/munin11:29:413
840529621,50sleep28542-21unixbench_multi07:04:162
559929620,54sleep25612-21fschecks_count12:04:042
2838729620,46sleep328384-21apt-get11:33:573
236472967,18sleep00-21swapper/007:53:450
1380729621,46sleep213826-21apt-get09:03:562
270722958,14sleep10-21swapper/108:03:591
2015329515,62sleep320210-21fschecks_count09:24:043
2015329515,62sleep320210-21fschecks_count09:24:043
904529415,34sleep19163-21latency_hist07:08:481
843129428,55sleep10-21swapper/108:46:351
1912229414,55sleep219208-21ls09:19:142
431229311,25sleep30-21swapper/308:34:013
431229311,25sleep30-21swapper/308:34:013
3185829321,52sleep331465-21/usr/sbin/munin11:44:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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