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2026-07-24 - 18:18

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

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: ondemand
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rack5slot4s.osadl.org (updated Fri Jul 24, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147761099229215,13cyclictest0-21swapper/012:02:520
147761699195190,3cyclictest1772473-21ntpq12:02:512
1477614996461,2cyclictest0-21swapper/112:02:511
15904172590,3sleep10-21swapper/109:02:461
15488362550,4chrt0-21swapper/108:17:571
1477614995345,6cyclictest1519074-21kworker/u8:2+flush-8:008:42:551
1477614994941,6cyclictest1623662-21latency_hist09:35:001
14823172480,4sleep1281rcuc/107:12:571
1477610994838,7cyclictest1698518-21latency_hist10:50:000
1477610994738,6cyclictest278-21systemd-journal12:32:410
1477614994433,7cyclictest278-21systemd-journal09:55:511
1477614994332,7cyclictest278-21systemd-journal12:23:511
1477614994232,7cyclictest1539360-21latency_hist08:10:011
1477616994135,4cyclictest1693455-21gpgv10:45:002
1477614994136,4cyclictest1508856-21kworker/u8:1+flush-8:008:22:541
1477614994035,3cyclictest1578697-21kworker/u8:4+events_unbound08:50:011
1477610994029,8cyclictest1708384-21latency_hist11:00:010
1477616993934,3cyclictest1728231-21gpgv11:20:002
16249002380,3sleep3577-21kworker/3:2-events09:37:433
1477614993831,5cyclictest1708198-21kworker/u8:0+events_unbound11:17:521
1477614993829,7cyclictest278-21systemd-journal07:36:511
1477614993826,8cyclictest278-21systemd-journal09:28:521
1477610993830,6cyclictest1524705-21/usr/sbin/munin07:57:550
1477614993732,4cyclictest1593641-21kworker/u8:2+flush-8:010:03:001
1477614993731,4cyclictest1708198-21kworker/u8:0+events_unbound12:27:551
1477610993732,4cyclictest1508856-21kworker/u8:1+flush-8:008:32:560
1477614993529,4cyclictest1708198-21kworker/u8:0+events_unbound11:22:551
1477614993526,7cyclictest1508856-21kworker/u8:1+events_unbound08:27:511
1477614993429,3cyclictest395-21dbus-daemon08:05:001
1477614993427,5cyclictest1668202-21kworker/u8:3+flush-8:010:52:531
1477614993425,7cyclictest1504211-21latency_hist07:35:001
1477610993424,8cyclictest1529935-21diskstats08:02:440
1477614993329,3cyclictest1508856-21kworker/u8:1+flush-8:007:42:561
1477614993328,4cyclictest1508856-21kworker/u8:1+events_unbound10:17:541
1477614993328,3cyclictest1802808-21kworker/u8:3+flush-8:012:37:571
1477614993328,3cyclictest1688159-21apt-get10:40:001
1477610993327,4cyclictest1593796-21latency_hist09:05:010
1477610993326,5cyclictest1467698-21kworker/u8:0+flush-8:007:22:420
1477610993324,7cyclictest1613558-21apt-get09:25:000
1477614993228,2cyclictest1748906-21cpuspeed_turbos11:42:381
1477614993227,3cyclictest1698300-21unixbench_singl10:47:551
1477614993227,3cyclictest1634634-21irqcore09:47:441
1477614993226,4cyclictest1524283-21latency_hist07:55:011
1477614993226,4cyclictest1519074-21kworker/u8:2+events_unbound08:12:541
1477614993226,4cyclictest1452049-21kworker/u8:2+flush-8:007:27:561
1477610993224,6cyclictest1658286-21latency_hist10:10:020
1477610993221,9cyclictest1622983-21ntpq09:32:500
14734072320,5sleep3451irq_work/307:07:413
1477614993127,3cyclictest1593641-21kworker/u8:2+flush-8:010:42:401
1477614993126,3cyclictest1588899-21systemd-run09:00:001
1477614993126,3cyclictest1508856-21kworker/u8:1+flush-8:010:07:561
1477614993125,4cyclictest1508856-21kworker/u8:1+flush-8:008:32:521
1477614993124,5cyclictest1753394-21kworker/u8:2+events_unbound12:17:391
1477614993122,7cyclictest1598752-21latency_hist09:10:021
1477614993121,7cyclictest1763156-21gpgv11:55:001
1477614993121,7cyclictest1763156-21gpgv11:55:001
1477610993125,4cyclictest1594464-21cpuspeed_turbos09:07:380
1477610993124,5cyclictest1753159-21latency_hist11:45:010
1477616993024,4cyclictest1484994-21aten2_r5power_v07:17:392
1477614993024,5cyclictest1508856-21kworker/u8:1+flush-8:009:52:501
1477614993022,6cyclictest1508856-21kworker/u8:1+flush-8:007:47:511
147761099308,19cyclictest1653373-21kworker/0:0+events10:42:350
147761099301,24cyclictest1529257-21kworker/0:2+events08:26:390
15533042290,5sleep3451irq_work/308:22:483
1477616992924,3cyclictest1788767-21fschecks_time12:22:402
1477614992924,3cyclictest1674047-21cut10:27:401
1477614992923,4cyclictest1593641-21kworker/u8:2+flush-8:011:12:471
1477614992923,3cyclictest0-21swapper/111:40:001
1477614992923,3cyclictest0-21swapper/110:32:381
1477614992922,5cyclictest1718089-21grep11:07:561
147761099295,23cyclictest1477475-21kworker/0:1+events07:42:510
1477610992924,3cyclictest1544281-21cron08:15:000
1477610992923,4cyclictest1603692-21apt09:15:000
1477616992824,2cyclictest1519099-21unixbench_multi07:47:572
1477616992823,3cyclictest0-21swapper/208:00:002
1477616992819,7cyclictest1714160-21fschecks_time11:07:412
1477614992823,4cyclictest1668202-21kworker/u8:3+events_unbound11:30:011
1477614992823,3cyclictest1764320-21irqcore11:57:431
1477614992823,2cyclictest0-21swapper/111:47:421
1477614992823,2cyclictest0-21swapper/111:47:421
1477614992822,4cyclictest1613315-21unixbench_multi09:22:571
147761099285,22cyclictest1653373-21kworker/0:0+events11:52:560
147761099285,22cyclictest1653373-21kworker/0:0+events11:52:550
1477610992824,3cyclictest1607802-21needreboot09:17:470
1477610992821,5cyclictest1519074-21kworker/u8:2+flush-8:008:17:430
1477610992821,5cyclictest1430791-21kworker/u8:3+flush-8:007:47:420
1477616992719,7cyclictest1704163-21fschecks_count10:57:412
1477616992718,7cyclictest1768194-21sendmail12:00:002
1477616992718,7cyclictest1494054-21unixbench_multi07:22:582
1477616992716,9cyclictest1613931-21cat09:25:012
1477614992722,4cyclictest1593641-21kworker/u8:2+flush-8:009:17:501
1477614992722,3cyclictest1629829-21irqrtprio09:42:421
1477614992721,4cyclictest1568750-21unixbench_multi08:37:561
1477614992721,4cyclictest1529026-21unixbench_singl07:57:571
1477614992719,6cyclictest1508856-21kworker/u8:1+flush-8:010:57:561
1477610992723,2cyclictest0-21swapper/010:00:000
1477610992722,3cyclictest1504258-21munin-run07:35:000
1477610992721,4cyclictest1747980-21unixbench_singl11:37:550
1477610992720,5cyclictest1519794-21apt-get07:52:350
1477610992719,6cyclictest1714060-21diskstats11:07:400
1477616992622,2cyclictest1548946-21unixbench_multi08:17:572
1477616992621,3cyclictest1482499-21turbostat.cron07:15:002
1477616992621,3cyclictest0-21swapper/210:00:002
1477616992618,6cyclictest1559836-21fschecks_count08:32:412
1477616992617,7cyclictest1753873-21fschecks_count11:47:412
1477616992617,7cyclictest1753873-21fschecks_count11:47:402
1477614992621,3cyclictest0-21swapper/109:40:001
1477610992622,3cyclictest1614768-21sort09:27:430
1477610992621,3cyclictest1668366-21latency_hist10:20:010
1477610992620,4cyclictest1569064-21latency_hist08:40:000
1477610992615,8cyclictest1728192-21apt-get11:20:000
1477616992519,4cyclictest1739048-21fschecks_count11:32:412
1477616992517,7cyclictest1787930-21cron12:20:002
1477616992517,6cyclictest1520017-21cpuspeed_turbos07:52:402
1477616992516,7cyclictest1549939-21fschecks_count08:22:402
1477614992520,3cyclictest1783063-21latency_hist12:15:011
1477614992520,3cyclictest1633443-21kworker/u8:0+events_unbound10:12:451
1477614992518,5cyclictest1494115-21unixbench_singl07:22:581
147761099256,18cyclictest1477475-21kworker/0:1+events07:17:510
147761099256,16cyclictest1653373-21kworker/0:0+events10:22:450
147761099252,22cyclictest1529257-21kworker/0:2+events08:52:430
1477610992521,2cyclictest869-21mta-sts-daemon08:47:520
1477610992520,3cyclictest0-21swapper/012:37:440
1477610992515,7cyclictest1499258-21latency_hist07:30:000
1477616992420,2cyclictest1599421-21cpuspeed_turbos09:12:382
1477616992419,4cyclictest1593533-21unixbench_multi09:02:582
1477616992416,6cyclictest1639241-21fschecks_count09:52:402
1477614992419,3cyclictest1583691-21unixbench_singl08:52:571
1477614992417,4cyclictest0-21swapper/111:32:511
147761099242,21cyclictest1653373-21kworker/0:0+events11:12:390
1477610992422,1cyclictest0-21swapper/010:02:590
147761099242,21cyclictest0-21swapper/007:37:570
1477610992418,3cyclictest0-21swapper/008:42:360
147761099241,22cyclictest1529257-21kworker/0:2+events08:57:430
1477616992320,2cyclictest1668354-21cron10:20:002
1477616992319,3cyclictest1713352-21cron11:05:002
1477616992319,3cyclictest1578920-21turbostat.cron08:50:002
1477616992319,3cyclictest0-21swapper/210:10:002
1477616992319,2cyclictest1499764-21aten2_r5power_e07:32:392
1477616992318,3cyclictest1793658-21fschecks_count12:27:412
1477616992318,3cyclictest1749023-21fschecks_time11:42:402
1477616992317,4cyclictest1674073-21fschecks_count10:27:402
1477616992315,6cyclictest1629459-21fschecks_time09:42:402
1477616992315,6cyclictest1510234-21fschecks_time07:42:432
1477616992314,7cyclictest1758916-21fschecks_time11:52:422
1477616992314,7cyclictest1758916-21fschecks_time11:52:412
147761099236,16cyclictest1529257-21kworker/0:2+events09:52:510
1477610992319,2cyclictest0-21swapper/010:52:500
1477610992317,4cyclictest1687910-21unixbench_multi10:37:560
1477610992317,4cyclictest1663189-21unixbench_multi10:12:550
1477610992317,4cyclictest0-21swapper/009:47:470
1477610992312,9cyclictest1538594-21ntpq08:07:490
147761099231,21cyclictest1653373-21kworker/0:0+events12:22:430
147761099230,22cyclictest1653373-21kworker/0:0+events12:07:510
14774072232,5sleep00-21swapper/007:09:560
14773362234,13sleep10-21swapper/107:09:011
1477616992219,2cyclictest1699312-21fschecks_time10:52:392
1477616992218,3cyclictest1719056-21fschecks_time11:12:392
1477616992217,3cyclictest1798593-21fschecks_time12:32:412
1477616992217,3cyclictest1540035-21cpuspeed_turbos08:12:382
1477616992216,4cyclictest1683735-21aten2_r5power_e10:37:382
1477616992216,4cyclictest1649793-21kthreadcore10:02:482
1477616992214,6cyclictest1614551-21fschecks_time09:27:412
1477616992214,6cyclictest1584548-21cpuspeed_turbos08:57:392
1477616992214,6cyclictest1569706-21cpuspeed_turbos08:42:382
1477616992213,7cyclictest1634395-21fschecks_time09:47:412
1477614992218,2cyclictest0-21swapper/109:12:471
1477614992217,4cyclictest1708198-21kworker/u8:0+events_unbound12:32:501
147761499221,19cyclictest1673359-21munin-run10:25:001
147761099221,8cyclictest17643792sed11:57:430
1477610992215,5cyclictest1633596-21latency_hist09:45:010
1477610992213,7cyclictest1712637-21ntpq11:02:500
147761699212,13cyclictest1494769-21apt-get07:27:382
1477616992117,2cyclictest1778749-21cpuspeed_turbos12:12:392
1477616992117,2cyclictest0-21swapper/211:27:512
1477616992115,4cyclictest1694343-21fschecks_time10:47:402
1477614992116,3cyclictest1430791-21kworker/u8:3+events_unbound07:15:021
1477614992110,3cyclictest421rcuog/212:07:561
147761099214,16cyclictest1653373-21kworker/0:0+events12:27:510
147761099214,16cyclictest1653373-21kworker/0:0+events11:32:470
147761099213,17cyclictest1653373-21kworker/0:0+events11:47:350
147761099213,17cyclictest1653373-21kworker/0:0+events11:47:350
1477610992119,1cyclictest0-21swapper/012:17:560
1477610992117,2cyclictest0-21swapper/012:12:520
1477610992117,2cyclictest0-21swapper/010:27:460
1477610992116,3cyclictest0-21swapper/010:32:450
1477610992115,4cyclictest1735892-21kthreadcore11:27:460
1477610992111,8cyclictest1729141-21diskstats11:22:400
1477616992015,3cyclictest1619486-21fschecks_time09:32:392
1477616992015,3cyclictest1554922-21fschecks_time08:27:402
1477616992015,3cyclictest1505217-21fschecks_time07:37:422
1477616992014,4cyclictest1669119-21fschecks_count10:22:392
1477616992012,6cyclictest1604404-21fschecks_count09:17:402
1477614992014,4cyclictest0-21swapper/111:02:471
147761099202,17cyclictest1477475-21kworker/0:1+events07:12:430
1477610992014,4cyclictest0-21swapper/009:37:510
1477610992010,8cyclictest1550863-21cut08:22:450
14772462204,10sleep20-21swapper/207:07:572
147761699192,13cyclictest1773597-21apt-get12:07:402
147761699192,12cyclictest1747505-21ntpq11:37:492
1477616991916,2cyclictest1534882-21aten2_r5power_c08:07:392
1477616991916,2cyclictest0-21swapper/209:37:432
1477616991915,2cyclictest0-21swapper/208:37:482
147761699191,13cyclictest1728192-21apt-get11:20:032
147761699191,13cyclictest1678718-21apt-get10:32:382
1477616991910,7cyclictest1532725-21tr08:02:492
1477616991814,2cyclictest0-21swapper/212:40:002
1477616991810,6cyclictest1598753-21cron09:10:002
1477616991613,2cyclictest0-21swapper/210:12:582
1477616991612,2cyclictest0-21swapper/208:52:562
16627342155,5sleep30-21swapper/310:12:503
17482132132,6sleep30-21swapper/311:40:013
16286272132,6sleep30-21swapper/309:40:003
16188442132,6sleep30-21swapper/309:30:013
16036752132,6sleep30-21swapper/309:15:013
15789112132,6sleep30-21swapper/308:50:013
15087702132,7sleep30-21swapper/307:37:553
14992792132,6sleep30-21swapper/307:30:013
14842832133,6sleep30-21swapper/307:15:053
17933702122,6sleep30-21swapper/312:27:403
17879272122,5sleep30-21swapper/312:20:013
17830002122,6sleep30-21swapper/312:14:513
17770912122,6sleep30-21swapper/312:07:493
17724752122,5sleep30-21swapper/312:02:523
17621582122,6sleep30-21swapper/311:52:493
17621582122,6sleep30-21swapper/311:52:493
17439482122,6sleep30-21swapper/311:37:403
17391742122,6sleep30-21swapper/311:32:433
17232682122,5sleep30-21swapper/311:15:013
17136972122,6sleep30-21swapper/311:06:313
17083702122,6sleep30-21swapper/311:00:013
17025522122,6sleep30-21swapper/310:52:463
16977632122,6sleep30-21swapper/310:47:503
16832532122,6sleep30-21swapper/310:35:013
16825802122,6sleep30-21swapper/310:32:523
16575142122,6sleep30-21swapper/310:07:493
16522482122,6sleep30-21swapper/310:02:513
16179312122,6sleep30-21swapper/309:27:503
16089682123,5sleep30-21swapper/309:21:393
15942132122,6sleep30-21swapper/309:07:353
15894422122,6sleep30-21swapper/309:02:413
15842082122,6sleep30-21swapper/308:56:243
15782752122,6sleep30-21swapper/308:47:533
15732112122,6sleep30-21swapper/308:42:523
15640692122,5sleep30-21swapper/308:35:013
15442712122,6sleep30-21swapper/308:14:553
15384652122,6sleep30-21swapper/308:07:483
15196312122,6sleep30-21swapper/307:50:513
15152112122,6sleep30-21swapper/307:47:423
14900872122,6sleep30-21swapper/307:22:433
18076322112,6sleep30-21swapper/312:38:423
17981962112,6sleep30-21swapper/312:31:523
17881882112,6sleep30-21swapper/312:20:053
17633752112,5sleep30-21swapper/311:55:013
17534242112,6sleep30-21swapper/311:45:343
17534242112,6sleep30-21swapper/311:45:343
17336912112,6sleep30-21swapper/311:26:133
17287222112,6sleep30-21swapper/311:20:473
17187462112,6sleep30-21swapper/311:12:363
17086752112,6sleep30-21swapper/311:00:423
16886372111,6sleep30-21swapper/310:40:033
16737222112,6sleep30-21swapper/310:27:113
16686322112,6sleep30-21swapper/310:20:253
16638752112,5sleep30-21swapper/310:17:363
16436902112,6sleep30-21swapper/309:55:053
16392262112,6sleep30-21swapper/309:52:403
16340062112,6sleep30-21swapper/309:47:273
16035882112,6sleep30-21swapper/309:13:543
15593292112,6sleep30-21swapper/308:30:113
15546402111,6sleep30-21swapper/308:27:383
15445412112,6sleep30-21swapper/308:15:233
15295122112,6sleep30-21swapper/308:00:463
15246592113,5sleep30-21swapper/307:57:013
15098202112,6sleep30-21swapper/307:42:093
14976052112,6sleep30-21swapper/307:27:483
14777422113,5sleep30-21swapper/307:10:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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