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2026-09-01 - 19:35

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 Sep 01, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313622102511,999sleep329688-21kworker/3:007:56:043
24043250332,453sleep24319-21kworker/u8:010:59:002
8058237218,340sleep38061-21/usr/sbin/munin10:09:043
5673234112,306sleep15706-21latency_hist08:18:471
5937230631,72sleep20-21swapper/211:44:052
689822677,246sleep06906-21ntpq10:04:210
2249722627,240sleep222555-21sed10:54:082
1777223122,189sleep11814-21grep09:49:081
1777223122,189sleep11814-21grep09:49:081
32115223015,41sleep215429-21cyclictest09:43:442
32115223015,41sleep215429-21cyclictest09:43:442
101962229166,20sleep20-21swapper/210:14:162
11852222537,85sleep212005-21latency_hist12:03:462
227882218177,16sleep20-21swapper/207:29:152
8729221715,57sleep2231-21systemd-journal08:28:452
8729221715,57sleep2231-21systemd-journal08:28:452
13913221548,56sleep20-21swapper/210:28:452
32720220819,168sleep2396-21timerwakeupswit11:24:152
17091220449,68sleep217271-21users07:13:492
18315219746,50sleep218432-21grep07:14:182
30580219068,23sleep20-21swapper/207:54:062
1915821828,158sleep219200-21latency10:44:062
1915821828,158sleep219200-21latency10:44:062
20442217311,143sleep220521-21awk09:04:172
16985217226,110sleep20-21swapper/212:19:042
13047216611,143sleep1367-21snmpd12:04:581
3213216416,58sleep20-21swapper/211:34:162
2193021619,137sleep222020-21grep12:34:142
15010216149,52sleep20-21swapper/208:48:472
219842157110,32sleep222047-21mailstats09:09:132
16890215320,113sleep316951-21fschecks_time08:54:043
1594214753,22sleep20-21swapper/209:49:052
1594214753,22sleep20-21swapper/209:49:052
17074214131,89sleep20-21swapper/208:54:082
5936214044,25sleep20-21swapper/210:03:462
19293213918,95sleep20-21swapper/207:19:062
19293213918,95sleep20-21swapper/207:19:062
2940921378,91sleep229474-21processes11:14:142
2940921378,91sleep229474-21processes11:14:142
2595821379,105sleep20-21swapper/207:39:242
2595821379,105sleep20-21swapper/207:39:242
16454213743,44sleep216457-21cron12:18:442
2013213411,107sleep02085-21mailstats09:49:150
2013213411,107sleep02085-21mailstats09:49:150
11592213112,17sleep20-21swapper/210:19:122
2773021308,20sleep30-21swapper/309:29:003
2773021308,20sleep30-21swapper/309:29:003
1927921307,106sleep019286-21df_inode07:19:040
1927921307,106sleep019286-21df_inode07:19:040
29228212911,16sleep20-21swapper/207:49:132
29228212911,16sleep20-21swapper/207:49:132
9275212716,93sleep19313-21sed10:13:461
20955212732,84sleep220969-21grep10:49:192
28296212628,76sleep20-21swapper/209:29:152
28296212628,76sleep20-21swapper/209:29:152
1574212548,25sleep20-21swapper/211:29:112
1320121256,18sleep20-21swapper/208:41:082
1320121256,18sleep20-21swapper/208:41:082
16427212427,76sleep20-21swapper/210:34:222
3099221238,103sleep231021-21proc_pri11:19:142
18860212135,42sleep30-21swapper/310:43:553
18860212135,42sleep30-21swapper/310:43:553
1844921219,56sleep20-21swapper/212:24:052
12084212027,82sleep212075-21apt-get12:04:032
4096211814,52sleep24210-21latency_hist08:13:472
3042521175,12sleep20-21swapper/209:37:182
3042521175,12sleep20-21swapper/209:37:182
18881211724,79sleep218956-21mailstats08:59:122
6380211625,49sleep20-21swapper/208:19:122
27033211510,91sleep227178-21modprobe07:43:482
27033211510,91sleep227178-21modprobe07:43:482
25110211516,81sleep025142-21sh07:38:460
25110211516,81sleep025142-21sh07:38:460
583211311,88sleep2708-21ls09:44:172
1119521128,53sleep20-21swapper/208:34:182
1119521128,53sleep20-21swapper/208:34:182
4882211110,53sleep20-21swapper/211:39:162
27391210927,22sleep20-21swapper/211:09:012
20589210910,20sleep20-21swapper/212:29:172
2396621085,54sleep20-21swapper/209:14:222
22695210814,82sleep022741-21processes10:54:140
1515121085,54sleep20-21swapper/210:29:462
27303210719,65sleep327343-21fschecks_count07:44:063
27303210719,65sleep327343-21fschecks_count07:44:063
18885210717,65sleep118938-21sendmail07:18:451
9314210651,18sleep20-21swapper/210:13:472
3096210617,75sleep13127-21nfs_client11:34:111
1984221066,92sleep028659-21kworker/u8:212:28:510
1235210619,52sleep20-21swapper/208:03:592
852421047,66sleep20-21swapper/211:52:042
4046210416,74sleep0231-21systemd-journal08:13:450
996721025,55sleep20-21swapper/211:55:392
32653210118,27sleep20-21swapper/207:59:262
25809210131,59sleep225813-21modprobe11:03:572
1854210115,25sleep00-21swapper/011:29:170
32538210012,70sleep332561-21/usr/sbin/munin11:24:123
26810210012,74sleep00-21swapper/007:42:170
26810210012,74sleep00-21swapper/007:42:170
211532987,42sleep221200-21ntpq07:24:102
211532987,42sleep221200-21ntpq07:24:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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