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2026-03-11 - 20:47

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 Wed Mar 11, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268552525612,5232sleep314326-21kworker/3:012:15:373
268552525612,5232sleep314326-21kworker/3:012:15:373
11743259823,558sleep311801-21/usr/sbin/munin11:28:383
31027256517,531sleep231090-21/usr/sbin/munin09:03:462
20011243818,404sleep220023-21/usr/sbin/munin08:28:382
1338240515,371sleep11414-21fschecks_time07:28:391
10356240529,319sleep110409-21sort07:58:211
9540233849,108sleep10-21swapper/109:38:361
1889230145,218sleep11933-21ntpq09:13:461
1889230145,218sleep11933-21ntpq09:13:461
155202272103,23sleep10-21swapper/109:58:221
155202272103,23sleep10-21swapper/109:58:221
23137223315,203sleep223197-21fschecks_time08:38:392
19233222694,25sleep10-21swapper/110:08:441
16513221611,183sleep116516-21cron08:18:191
30133221550,107sleep10-21swapper/107:18:211
25822221319,98sleep125966-21unixbench_singl10:28:501
6384221118,165sleep16402-21apt-get09:28:311
28129221014,77sleep128281-21unixbench_singl12:18:501
12222220222,164sleep112347-21timerwakeupswit11:28:481
2381322018,179sleep123871-21sed10:23:411
12419219912,162sleep10-21swapper/108:03:421
12419219912,162sleep10-21swapper/108:03:421
5938219313,166sleep36025-21unin-run09:28:213
5938219313,166sleep36025-21unin-run09:28:213
31743218715,115sleep131764-21modprobe12:33:191
1085721869,130sleep110871-21kernelversion07:58:421
17784218414,17sleep10-21swapper/111:48:221
13345217010,117sleep112832-21apt-get11:33:371
27156216971,83sleep127300-21latency_hist12:18:211
27156216971,83sleep127300-21latency_hist12:18:211
32516216810,141sleep132580-21mailstats12:33:471
23658216827,41sleep123743-21ls08:38:501
2830221666,16sleep30-21swapper/310:38:373
13783216526,20sleep10-21swapper/108:08:391
12902216511,111sleep112956-21latency09:48:411
17314216116,133sleep117315-21cpu10:03:351
1018216118,26sleep10-21swapper/107:28:221
32671216010,110sleep132739-21ls09:08:451
12772215814,125sleep312842-21fw_packets09:48:393
3652215412,27sleep10-21swapper/109:18:501
3652215412,27sleep10-21swapper/109:18:501
4846215318,21sleep10-21swapper/111:08:221
16486215340,92sleep10-21swapper/109:58:511
19777214733,19sleep10-21swapper/111:53:391
11571214581,45sleep10-21swapper/109:43:491
1984214228,85sleep126604-21cyclictest10:58:331
20176214183,43sleep10-21swapper/108:28:411
767721377,116sleep215336-1kworker/2:0H11:15:252
767721377,116sleep215336-1kworker/2:0H11:15:252
6156213428,23sleep16323-21store09:28:231
32006213212,105sleep032025-21apt-get12:33:300
1925121328,108sleep00-21swapper/008:23:520
2820021308,105sleep10-21swapper/110:38:311
30197212911,93sleep230235-21kworker/u8:012:28:192
16823212721,26sleep10-21swapper/108:18:321
31752212613,76sleep131888-21sed07:23:221
32163212333,62sleep032157-21apt-get07:23:370
24989212326,76sleep025135-21sed12:08:520
860421228,13sleep10-21swapper/111:19:201
1038621227,103sleep110432-21sed11:23:441
3443211621,78sleep33472-21nfs4_client09:18:443
3443211621,78sleep33472-21nfs4_client09:18:443
3012221155,13sleep10-21swapper/112:27:221
32473211412,20sleep00-21swapper/009:08:400
30845211311,80sleep10-21swapper/109:03:411
2396021138,93sleep124007-21systemctl12:08:201
1621921135,96sleep00-21swapper/008:14:390
13346211213,78sleep213488-21/usr/sbin/munin09:48:512
3030521115,11sleep10-21swapper/109:00:131
2714421115,12sleep10-21swapper/108:49:521
563621099,87sleep15639-21cron07:43:201
2787421095,17sleep10-21swapper/110:37:541
7142210810,73sleep10-21swapper/111:13:511
7142210810,73sleep10-21swapper/111:13:511
5554210712,79sleep25067-21/usr/sbin/munin11:08:472
838921058,15sleep10-21swapper/109:33:441
691621057,14sleep30-21swapper/311:13:453
691621057,14sleep30-21swapper/311:13:453
2085221048,83sleep13243-1kworker/1:1H10:13:441
2053210216,71sleep32063-21df_inode10:58:353
6644210114,73sleep06618-21/usr/sbin/munin11:13:380
6644210114,73sleep06618-21/usr/sbin/munin11:13:380
2977221008,80sleep129818-21grep10:43:351
2683421007,16sleep10-21swapper/107:08:361
112521007,19sleep1382-21/usr/sbin/munin10:53:531
222662996,14sleep10-21swapper/110:18:411
2156429819,63sleep221587-21fschecks_count08:33:422
63752976,15sleep10-21swapper/107:43:441
225922975,19sleep10-21swapper/108:36:321
149242967,50sleep10-21swapper/111:38:331
1037529618,62sleep010385-21uname11:23:430
285372957,14sleep10-21swapper/108:53:521
1939529520,59sleep218838-21/usr/sbin/munin10:08:492
1855929516,56sleep10-21swapper/111:48:511
900029415,56sleep38434-21/usr/sbin/munin11:19:303
2533529432,37sleep025399-21sort07:03:390
1502329421,50sleep315128-21fschecks_time11:38:393
56362936,11sleep10-21swapper/109:25:121
2746629317,55sleep027594-21latency_hist08:53:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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