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2026-08-05 - 07:47

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 Aug 04, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187832758816,7556sleep015762-21kworker/0:009:51:280
29240261423,577sleep029233-21apt-get12:07:430
20517235825,314sleep120593-21/usr/sbin/munin11:38:001
29019231959,208sleep329166-21latency_hist12:07:303
12694230327,129sleep30-21swapper/309:32:303
16585229012,163sleep316642-21latency_hist08:02:293
16585229012,163sleep316642-21latency_hist08:02:293
3272022798,233sleep332603-21/usr/sbin/munin08:52:493
31744224784,58sleep30-21swapper/308:48:003
3088422418,42sleep30-21swapper/310:27:583
6315223121,191sleep06461-21unixbench_multi10:53:020
447221821,187sleep3364-21snmpd10:34:443
27952221555,143sleep328086-21grep10:18:013
3971221431,168sleep23972-21sshd12:28:282
21539221217,181sleep221571-21tune2fs11:42:462
17929220529,96sleep317867-21munin-run11:32:293
22896220010,177sleep022932-21ntpq10:02:510
207692190130,17sleep30-21swapper/308:12:593
16339219062,48sleep30-21swapper/309:42:523
9130218413,153sleep09136-21df_inode07:37:470
9424217434,81sleep30-21swapper/307:37:543
3235721726,43sleep332373-21awk12:17:393
30550217111,139sleep330696-21latency_hist12:12:303
19669217027,80sleep319791-21latency_hist11:37:303
10085216926,106sleep310226-21latency_hist11:07:303
11914216817,129sleep212039-21latency_hist07:47:302
24641216615,25sleep30-21swapper/311:52:483
2323721669,145sleep323370-21grep10:02:593
1499421629,21sleep30-21swapper/311:22:443
1499421629,21sleep30-21swapper/311:22:443
4737216134,89sleep34794-21ls12:32:493
5639215910,133sleep35670-21idleruntime-cro07:27:283
28372215810,88sleep30-21swapper/308:37:553
26808215818,120sleep326928-21timerwakeupswit11:58:013
3488215538,72sleep33529-21proc_pri12:27:573
19906215035,99sleep30-21swapper/311:37:423
15271214814,116sleep00-21swapper/007:57:420
15271214814,116sleep00-21swapper/007:57:420
4998214715,116sleep15082-21fschecks_time09:07:531
2327321466,13sleep30-21swapper/311:47:523
22234214423,42sleep122261-21munin-plugin-st10:02:281
7682213976,18sleep30-21swapper/309:17:283
25715213923,61sleep30-21swapper/308:28:023
25715213923,61sleep30-21swapper/308:28:023
1858521397,16sleep30-21swapper/308:07:383
1858521397,16sleep30-21swapper/308:07:383
12281213428,49sleep30-21swapper/307:47:483
2517213222,90sleep12590-21sshd07:17:291
13943213127,71sleep3364-21snmpd09:34:203
13943213127,71sleep3364-21snmpd09:34:203
32062212811,83sleep332065-21cron12:17:273
11862212851,42sleep311886-21cpu11:12:433
11862212851,42sleep311886-21cpu11:12:433
7481212723,85sleep27518-21cpu07:32:442
3150321268,80sleep331595-21date07:07:303
5448212550,25sleep30-21swapper/309:08:033
4078212544,39sleep30-21swapper/310:47:403
4078212544,39sleep30-21swapper/310:47:403
611212110,66sleep3623-21munin-node07:12:313
26310212118,84sleep026459-21unixbench_multi10:13:010
2591212113,90sleep22624-21cat07:17:302
31432212047,46sleep131457-21munin-plugin-st07:07:281
7287211945,32sleep30-21swapper/310:57:493
30775211910,71sleep330811-21awk08:47:283
30775211910,71sleep330811-21awk08:47:283
29034211724,75sleep129094-21latency10:22:551
20169211619,76sleep120236-21df08:12:451
13408211518,80sleep013457-21unin-run07:52:290
2346621140,13sleep10-21swapper/108:22:501
211821149,70sleep32154-21ntpq08:57:543
14700211216,80sleep214722-21basename11:22:272
7676211122,75sleep17718-21uname10:57:591
5392211026,24sleep10-21swapper/110:52:301
5392211026,24sleep10-21swapper/110:52:301
30304211013,79sleep030349-21/usr/sbin/munin10:27:430
8604210916,80sleep18681-21grep09:17:581
19122210912,80sleep019123-21sendmail-mta09:52:340
1025210936,47sleep30-21swapper/307:12:353
21663210812,79sleep021711-21if_eth011:42:480
2103210830,38sleep30-21swapper/312:23:003
10305210831,37sleep30-21swapper/311:07:383
6505210615,74sleep06514-21/usr/sbin/munin09:12:490
30318210616,30sleep230416-21users08:42:592
30318210616,30sleep230416-21users08:42:592
1073210613,74sleep01085-21/usr/sbin/munin10:37:480
26891210528,66sleep326913-21munin-run10:17:283
13422210510,19sleep10-21swapper/111:17:421
11605210517,71sleep111619-21munin-run11:12:291
4079210342,38sleep30-21swapper/309:03:033
26937210326,38sleep30-21swapper/308:32:583
871221027,12sleep30-21swapper/307:37:103
19276210214,73sleep119277-21sshd11:33:281
31192210112,76sleep231240-21cat12:12:542
1559321015,12sleep30-21swapper/309:40:173
2191629940,48sleep321428-21/usr/sbin/munin11:42:553
1822529815,47sleep331546-21cyclictest08:07:303
885629723,26sleep10-21swapper/107:37:321
605429722,34sleep30-21swapper/307:27:493
290229723,55sleep02936-21ntp_kernel_err10:42:530
154632977,13sleep00-21swapper/011:22:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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