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2026-04-14 - 09:24

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 Tue Apr 14, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24399265626,6546sleep121405-21kworker/1:119:32:191
174822314811,3125sleep34671-21kworker/3:020:54:193
3321223447,2303sleep1676-21kworker/1:020:10:191
66302111857,1049sleep16674-21ntpq23:46:471
7015269415,659sleep07151-21/usr/sbin/munin23:46:550
143225998,576sleep11468-21ntpq21:46:461
17457258611,530sleep117609-21latency_hist00:21:241
19188255611,528sleep119338-21grep22:41:581
19188255611,528sleep119338-21grep22:41:581
30789237212,342sleep330801-21/usr/sbin/munin21:36:473
5505229266,143sleep10-21swapper/122:01:241
20118228821,253sleep00-21swapper/019:21:240
30008228482,70sleep10-21swapper/119:51:421
8986228218,213sleep19086-21timerandwakeup20:26:551
10229226989,138sleep110281-21switchtime23:57:131
17939222739,135sleep118022-21latency00:21:441
17939222739,135sleep118022-21latency00:21:441
2776222076,188sleep127769-21ntpq21:26:511
21390219920,51sleep10-21swapper/100:31:541
20452218517,153sleep020476-21proc_pri22:46:500
20452218517,153sleep020476-21proc_pri22:46:500
4910218416,144sleep05049-21sed21:56:550
20476218148,68sleep10-21swapper/100:31:211
20476218148,68sleep10-21swapper/100:31:211
2989921779,153sleep129974-21mailstats23:16:511
2989921779,153sleep129974-21mailstats23:16:511
1426221718,148sleep114337-21awk22:26:561
1426221718,148sleep114337-21awk22:26:561
16751216849,75sleep10-21swapper/120:51:461
29117216016,119sleep10-21swapper/121:31:441
15762215510,134sleep013441-21snmpd00:15:500
11254215446,49sleep10-21swapper/120:36:241
2494421507,57sleep10-21swapper/123:01:491
2494421507,57sleep10-21swapper/123:01:491
20067214910,21sleep10-21swapper/121:01:521
20067214910,21sleep10-21swapper/121:01:521
17118214910,23sleep10-21swapper/122:36:491
419021477,125sleep14268-21mailstats20:11:531
419021477,125sleep14268-21mailstats20:11:531
951021449,71sleep10-21swapper/122:11:541
1280221448,98sleep112822-21latency_hist20:41:251
6894214122,106sleep37012-21sed23:46:543
12444214073,21sleep10-21swapper/100:06:221
5314213938,86sleep15408-21timerandwakeup23:41:551
18683213918,37sleep30-21swapper/322:41:483
18683213918,37sleep30-21swapper/322:41:483
13532213730,83sleep313588-21fschecks_count19:01:413
3622213610,113sleep13650-21proc_pri23:36:501
26583213310,99sleep10-21swapper/119:41:241
26583213310,99sleep10-21swapper/119:41:241
1587213273,43sleep10-21swapper/123:31:371
22175213141,73sleep10-21swapper/121:09:191
22211213020,83sleep20-21swapper/222:51:532
22211213020,83sleep20-21swapper/222:51:532
25838212813,102sleep025841-21entropy21:21:420
20366212647,61sleep120378-21cpu19:21:371
17423212619,88sleep00-21swapper/000:21:230
26442212421,85sleep226482-21cat21:22:042
21298212463,18sleep10-21swapper/122:51:231
21298212463,18sleep10-21swapper/122:51:231
1899121246,34sleep10-21swapper/120:58:211
9363212316,89sleep29545-21apt-key23:56:262
15794212323,40sleep10-21swapper/122:32:011
2932621226,11sleep10-21swapper/119:47:301
2932621226,11sleep10-21swapper/119:47:301
2259921225,12sleep10-21swapper/121:11:331
541212136,65sleep10-21swapper/123:26:531
24719212123,82sleep024731-21modprobe19:36:220
15602212146,16sleep10-21swapper/119:06:551
15602212146,16sleep10-21swapper/119:06:551
362121195,10sleep10-21swapper/121:53:121
3197121188,39sleep10-21swapper/121:41:371
2746921185,10sleep10-21swapper/123:10:411
2746921185,10sleep10-21swapper/123:10:411
20129211827,77sleep10-21swapper/119:21:251
22400211553,47sleep10-21swapper/119:26:541
9230211453,50sleep19360-21apt-key23:56:251
20526211423,74sleep320616-21latency_hist00:31:233
20526211423,74sleep320616-21latency_hist00:31:233
1585421144,16sleep00-21swapper/020:48:180
637821095,91sleep10-21swapper/120:19:201
637821095,91sleep10-21swapper/120:19:201
11972210930,41sleep112006-21cpu22:21:391
7962210851,18sleep18083-21cat22:06:531
19877210813,77sleep319886-21/usr/sbin/munin21:01:463
19877210813,77sleep319886-21/usr/sbin/munin21:01:463
9546210611,77sleep39082-21apt-get23:56:273
3162210615,70sleep22586-21/usr/sbin/munin21:51:522
22478210513,74sleep00-21swapper/022:52:190
22478210513,74sleep00-21swapper/022:52:190
1060521058,76sleep10-21swapper/122:16:421
331210443,45sleep10-21swapper/120:01:231
331210443,45sleep10-21swapper/120:01:231
3246210315,70sleep03256-21/usr/sbin/munin23:36:410
10515210318,66sleep010604-21fschecks_time22:16:410
25756210227,62sleep125759-21grep21:21:381
166321025,53sleep10-21swapper/120:03:531
166321025,53sleep10-21swapper/120:03:531
7294210112,74sleep27353-21processes20:21:512
29924210117,61sleep20-21swapper/219:51:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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