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2026-05-05 - 12:18

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 May 05, 2026 00:43:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8718216879,1666sleep230894-1kworker/2:0H21:15:212
22486239415,366sleep222488-21sshd21:57:532
32306229075,196sleep00-21swapper/022:30:020
24794228715,188sleep024817-21kernelversion22:05:220
5993227719,236sleep36125-21unixbench_singl00:30:313
3734226778,174sleep03775-21fschecks_time21:00:410
29981226692,21sleep00-21swapper/000:05:200
28047223856,107sleep028069-21munin-run23:59:590
11202223773,81sleep011267-21awk19:41:300
8805222610,201sleep08837-21tune2fs21:15:270
67612223152,15sleep00-21swapper/022:50:250
565722079,91sleep05697-21awk00:30:240
3078220724,159sleep00-21swapper/019:15:300
15020219711,126sleep015039-21fschecks_count21:35:180
1360219522,152sleep11393-21grep22:34:591
25005218912,119sleep025149-21latency_hist23:50:010
29474218213,101sleep029416-21/usr/sbin/munin22:20:330
29474218213,101sleep029416-21/usr/sbin/munin22:20:330
12215217916,80sleep00-21swapper/021:25:250
1650421769,106sleep016589-21switchtime23:20:290
2145217015,68sleep00-21swapper/022:35:270
2145217015,68sleep00-21swapper/022:35:270
6117215913,89sleep06226-21latency_hist22:50:010
11758215764,22sleep00-21swapper/023:05:310
11758215764,22sleep00-21swapper/023:05:310
30202215457,41sleep030319-21sort20:40:300
30202215457,41sleep030319-21sort20:40:300
28889215210,82sleep01-21systemd22:20:000
28889215210,82sleep01-21systemd22:20:000
2100521495,10sleep00-21swapper/021:53:390
1652221488,101sleep016684-21apt-key21:40:020
16951214714,116sleep317004-21if_err_eth021:40:303
26598214313,118sleep326663-21cat20:30:203
25324214361,62sleep00-21swapper/023:50:180
689221427,15sleep00-21swapper/000:35:160
5215214024,100sleep05305-21perl21:05:220
31931214027,26sleep00-21swapper/019:05:290
2989213815,108sleep22937-21latency_hist22:40:012
2989213815,108sleep22937-21latency_hist22:40:012
26219213810,56sleep00-21swapper/022:10:190
2011021385,122sleep00-21swapper/023:32:490
6335213720,27sleep00-21swapper/019:25:310
380721378,111sleep13809-21cron19:19:591
12452213754,63sleep00-21swapper/019:45:220
31686213516,104sleep331743-21irqstats00:10:203
31686213516,104sleep331743-21irqstats00:10:203
3192521348,64sleep00-21swapper/000:10:250
3192521348,64sleep00-21swapper/000:10:250
1905212713,87sleep00-21swapper/019:15:010
1905212713,87sleep00-21swapper/019:15:010
24835212619,88sleep224353-21apt-get20:25:102
4768212514,96sleep3225-21systemd-journal00:27:203
11593212549,64sleep011602-21munin-run21:25:000
3383212312,93sleep23019-21apt-get21:00:032
1715212223,34sleep30-21swapper/320:55:113
6926212135,67sleep00-21swapper/021:10:180
22732212111,91sleep022815-21latency_hist22:00:010
1645321218,103sleep0363-21snmpd19:58:590
2337321209,87sleep023406-21ntpq22:00:260
20542212013,91sleep220543-21/usr/sbin/munin23:35:092
20542212013,91sleep220543-21/usr/sbin/munin23:35:092
31607211819,72sleep231450-21/usr/sbin/munin00:10:192
31607211819,72sleep231450-21/usr/sbin/munin00:10:192
29301211843,13sleep00-21swapper/020:40:020
29301211843,13sleep00-21swapper/020:40:020
14145211516,81sleep214285-21/usr/sbin/munin21:30:312
31923211417,36sleep331929-21ntp_states19:05:283
1685121149,74sleep00-21swapper/020:00:160
1685121149,74sleep00-21swapper/020:00:160
2293211217,22sleep10-21swapper/120:55:291
18785211223,62sleep318911-21latency_hist23:30:013
4636211034,15sleep00-21swapper/000:25:350
26992211017,21sleep00-21swapper/020:30:290
32637210942,35sleep00-21swapper/020:50:150
28826210937,40sleep00-21swapper/000:00:270
12687210911,80sleep30-21swapper/319:45:293
30254210815,63sleep10-21swapper/122:20:501
30254210815,63sleep10-21swapper/122:20:501
5207210712,81sleep35213-21cat21:05:213
1411210516,69sleep31498-21latency_hist22:35:013
9150210410,37sleep09196-21ntp_kernel_pll_19:35:250
8346210414,73sleep38192-21latency_hist21:15:023
3671210437,32sleep00-21swapper/022:40:230
3671210437,32sleep00-21swapper/022:40:230
2171921046,87sleep00-21swapper/023:38:350
2171921046,87sleep00-21swapper/023:38:350
13930210423,70sleep0363-21snmpd23:13:230
13164210413,71sleep312770-21/usr/sbin/munin23:10:233
23402210210,18sleep20-21swapper/223:44:592
23402210210,18sleep20-21swapper/223:44:592
2003421028,27sleep00-21swapper/020:10:180
8585210118,70sleep38626-21cut22:55:293
8585210118,70sleep38626-21cut22:55:293
31087210125,42sleep00-21swapper/020:45:150
31087210125,42sleep00-21swapper/020:45:150
8746210022,50sleep38765-21apt-get19:35:113
2307929930,42sleep223075-21apt-get20:20:132
2307929930,42sleep223075-21apt-get20:20:132
1971429963,15sleep00-21swapper/020:10:010
139452999,18sleep00-21swapper/021:30:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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