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2025-11-29 - 16:38

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 Sat Nov 29, 2025 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
619270106,6992sleep131663-21kworker/1:112:04:141
163532246210,2435sleep221461-1kworker/2:1H11:13:552
32508281419,779sleep232539-21memory08:38:552
209902642480,104sleep120992-21sshd08:03:321
32385243047,291sleep132420-21munin-plugin-st10:23:131
26134235111,326sleep026172-21irqstats11:43:500
18389228831,225sleep00-21swapper/009:38:260
4149227980,104sleep14296-21latency_hist12:18:161
23802227314,238sleep0419-21cron11:38:120
23802227314,238sleep0419-21cron11:38:120
26736225675,87sleep10-21swapper/110:03:551
22771225065,170sleep122799-21idleruntime-cro09:53:131
7198223113,24sleep17202-21cron09:03:131
7198223113,24sleep17202-21cron09:03:131
6479222712,192sleep16553-21sort12:23:451
6799222226,180sleep16919-21latency_hist07:18:161
16547221312,182sleep116590-21awk09:33:141
15146220810,187sleep115189-21ntp_kernel_pll_07:43:451
12644220411,176sleep112857-21latency_hist11:03:161
8695220016,112sleep18839-21tail10:48:461
12964219210,108sleep10-21swapper/107:38:151
19124218716,88sleep10-21swapper/109:38:471
2000921828,52sleep120034-21df09:43:321
31832217111,97sleep131856-21modprobe12:03:131
14195217146,29sleep10-21swapper/111:08:131
19673216718,131sleep319697-21basename09:43:133
1796321678,13sleep00-21swapper/007:53:330
1796321678,13sleep00-21swapper/007:53:330
517821649,138sleep10-21swapper/107:13:151
517821649,138sleep10-21swapper/107:13:151
18353216418,129sleep318418-21awk07:53:443
18353216418,129sleep318418-21awk07:53:443
2664121637,29sleep10-21swapper/108:19:271
1898421565,27sleep10-21swapper/107:56:091
1898421565,27sleep10-21swapper/107:56:091
4375215435,29sleep10-21swapper/112:18:321
25677214815,118sleep225670-21apt-get08:18:312
29628214042,80sleep10-21swapper/110:13:321
25406213934,86sleep125431-21munin-run11:43:141
25406213934,86sleep125431-21munin-run11:43:141
13782213811,115sleep113863-21switchtime07:38:441
740321376,73sleep10-21swapper/107:18:411
19528213720,97sleep119617-21fschecks_time07:58:351
31911213645,69sleep10-21swapper/108:38:171
18143213618,100sleep217845-21/usr/sbin/munin11:18:402
2542213322,67sleep11760-21/usr/sbin/munin10:28:511
2542213322,67sleep11760-21/usr/sbin/munin10:28:511
6732212817,91sleep10-21swapper/110:43:371
6732212817,91sleep10-21swapper/110:43:371
3184212831,83sleep13208-21unin-run07:08:151
8764212722,88sleep11-21systemd09:08:141
8764212722,88sleep11-21systemd09:08:141
22224212713,99sleep122270-21modprobe11:33:131
22224212713,99sleep122270-21modprobe11:33:131
5283212665,38sleep10-21swapper/110:38:401
2492621269,44sleep10-21swapper/109:58:381
32437212419,87sleep332525-21latency_hist10:23:163
28555212419,77sleep30-21swapper/308:28:173
28555212419,77sleep30-21swapper/308:28:173
2601121228,13sleep10-21swapper/111:43:391
1684821216,11sleep10-21swapper/107:48:451
10897212112,18sleep10-21swapper/110:58:151
10897212112,18sleep10-21swapper/110:58:151
1988211914,84sleep02025-21fschecks_count07:03:330
6687211721,74sleep2225-21systemd-journal07:18:132
1791521179,96sleep00-21swapper/009:35:310
11951211710,93sleep112088-21date09:18:151
2925321167,72sleep129287-21ps08:28:521
24360211613,86sleep124363-21cron09:58:141
10729211610,82sleep010775-21fschecks_count09:13:340
24782211410,59sleep124905-21timerwakeupswit08:13:451
15756211311,81sleep115827-21http11:13:131
30698211218,77sleep230760-21perl11:58:382
26045211126,24sleep20-21swapper/210:03:152
2808021099,86sleep128172-21tune2fs10:08:361
2563210912,79sleep32650-21latency_hist08:48:173
23513210931,18sleep10-21swapper/108:09:331
14760210915,77sleep314755-21apt-get07:43:303
4754210728,39sleep14793-21ntpq08:53:401
4754210728,39sleep14793-21ntpq08:53:401
24705210714,71sleep024780-21grep08:13:440
29669210512,28sleep029761-21perl10:13:350
28861210530,61sleep328878-21uniq08:28:343
16861210520,18sleep10-21swapper/109:33:261
9863210414,77sleep39909-21sed10:53:413
9863210414,77sleep39909-21sed10:53:413
17641210410,80sleep317675-21cat07:53:163
16284210317,68sleep015802-21apt-get11:13:250
10392210327,64sleep110401-21munin-run09:13:151
10392210327,64sleep110401-21munin-run09:13:151
27004210214,69sleep027074-21/usr/sbin/munin10:04:020
11044210212,18sleep20-21swapper/209:13:402
5188210116,59sleep25327-21latency_hist07:13:162
5188210116,59sleep25327-21latency_hist07:13:162
3820210127,38sleep00-21swapper/007:08:260
3820210127,38sleep00-21swapper/007:08:260
13529210131,22sleep10-21swapper/109:23:161
23806210025,62sleep10-21swapper/111:38:131
23806210025,62sleep10-21swapper/111:38:131
673829917,68sleep00-21swapper/007:18:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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