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2026-08-10 - 17:39

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 the 792 highest latencies:
System rack5slot4s.osadl.org (updated Mon Aug 10, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
56117223310,2sleep3575-21kworker/3:2+events07:22:523
58629421870,3sleep3575-21kworker/3:2-events07:47:523
74122021780,3sleep3575-21kworker/3:2+events10:22:523
5473489910285,15cyclictest0-21swapper/009:52:550
547353998178,1cyclictest0-21swapper/209:52:542
547350995954,4cyclictest669288-21kworker/u8:1+events_unbound09:43:011
547350994837,8cyclictest275-21systemd-journal10:25:001
547348994841,5cyclictest803060-21latency_hist11:25:010
547348994638,5cyclictest723739-21latency_hist10:05:010
547348994636,8cyclictest683368-21ntpq09:22:580
547348994636,8cyclictest683368-21ntpq09:22:580
6120912440,2chrt0-21swapper/208:12:552
547350994435,6cyclictest275-21systemd-journal09:10:081
547348994435,6cyclictest614147-21latency_hist08:15:010
5937962420,2sleep3471rcuc/307:53:023
547350994238,2cyclictest711655-21cut09:52:541
547350994028,9cyclictest275-21systemd-journal12:23:121
547350993927,9cyclictest275-21systemd-journal09:39:081
547348993833,3cyclictest629425-21latency_hist08:30:010
547348993831,5cyclictest275-21systemd-journal07:52:340
547353993729,6cyclictest639577-21base6408:40:012
547350993729,6cyclictest807323-21kworker/u8:2+events_unbound12:37:481
547350993729,6cyclictest547691-21/usr/sbin/munin07:12:571
6565812360,2sleep3575-21kworker/3:2+mm_percpu_wq08:57:543
547353993628,6cyclictest275-21systemd-journal07:35:002
547348993630,4cyclictest275-21systemd-journal12:00:000
547348993628,6cyclictest510439-21kworker/u8:2+flush-8:007:48:000
5426682363,8sleep10-21swapper/107:06:261
547350993428,4cyclictest663578-21ntpq09:03:001
547350993425,6cyclictest275-21systemd-journal07:28:421
547350993422,9cyclictest275-21systemd-journal10:33:071
547350993422,9cyclictest275-21systemd-journal10:33:071
547353993324,7cyclictest604026-21apt-get08:05:002
547350993328,3cyclictest772870-21unixbench_multi10:53:051
547348993325,6cyclictest807995-21latency_hist11:30:010
7541132320,10sleep0141ktimers/010:37:500
547353993223,6cyclictest728638-21cron10:10:002
547348993225,5cyclictest787975-21unixbench_multi11:08:040
547348993224,6cyclictest808696-21diskstats11:32:470
547353993121,8cyclictest778090-21apt-get11:00:002
547348993127,2cyclictest823323-21latency_hist11:45:000
547348993126,3cyclictest863486-21aten2_r5power_v12:27:470
547348993126,3cyclictest744132-21tr10:27:460
547348993126,3cyclictest0-21swapper/008:10:010
547348993126,2cyclictest568979-21sh07:30:000
547348993123,6cyclictest639160-21latency_hist08:40:010
547348993123,4cyclictest0-21swapper/008:02:590
547348993122,6cyclictest868599-21grep12:32:490
7014132300,2sleep3575-21kworker/3:2+events09:42:523
547353993022,6cyclictest847962-21gpgv12:10:012
547350993024,4cyclictest743682-21kworker/u8:0-ext4-rsv-conversion11:30:001
547350993022,6cyclictest847107-21ntpq12:07:581
547350993021,6cyclictest738502-21latency_hist10:20:011
547348993025,3cyclictest758898-21aten2_r5power_v10:42:460
547348993025,3cyclictest684802-21cpuspeed_turbos09:27:470
547350992925,2cyclictest763283-21cron10:45:001
547350992924,3cyclictest603782-21unixbench_multi08:03:021
547350992923,4cyclictest659435-21systemd-run09:00:011
547350992922,5cyclictest669039-21unixbench_multi09:08:051
547350992922,5cyclictest275-21systemd-journal12:13:121
547348992924,4cyclictest589318-21kworker/u8:3+flush-8:008:18:010
547348992924,3cyclictest778078-21cron11:00:000
547348992917,8cyclictest275-21systemd-journal12:25:000
54734899290,27cyclictest573984-21anacron07:35:000
547353992823,3cyclictest828647-21aten2_r5power_v11:52:462
547350992821,5cyclictest818384-21/usr/sbin/munin11:42:561
547350992821,5cyclictest578664-21grep07:38:031
547348992823,3cyclictest783320-21true11:05:000
547348992823,2cyclictest0-21swapper/007:15:010
547348992817,8cyclictest738499-21idleruntime-cro10:20:000
5426772282,6sleep00-21swapper/007:06:330
547353992723,2cyclictest664120-21unixbench_singl09:03:082
547353992719,6cyclictest675057-21perl09:17:492
547350992723,2cyclictest731264-21kthreadcore10:12:541
547350992723,2cyclictest0-21swapper/111:15:001
54735099270,10cyclictest8573682grep12:18:011
54734899272,24cyclictest0-21swapper/011:38:030
547348992722,3cyclictest654402-21apt-key08:55:010
547348992721,4cyclictest649101-21unixbench_singl08:48:050
547353992622,2cyclictest858549-21aten2_r5power_v12:22:442
547353992622,2cyclictest699572-21aten2_r5power_v09:42:462
547353992622,2cyclictest664902-21aten2_r5power_v09:07:472
547353992621,3cyclictest754028-21cpuspeed_turbos10:37:492
547353992620,4cyclictest629342-21latency_hist08:30:012
547350992623,2cyclictest0-21swapper/108:30:011
547350992622,2cyclictest764464-21irqrtprio10:47:521
547350992619,5cyclictest842248-21ntpq12:02:591
547350992617,7cyclictest275-21systemd-journal11:05:001
547348992622,2cyclictest0-21swapper/012:10:010
547348992621,4cyclictest609203-21kworker/u8:0+events_unbound08:58:050
547348992621,3cyclictest842939-21cron12:05:000
547348992619,4cyclictest708888-21turbostat.cron09:50:000
547348992611,5cyclictest828083-21latency_hist11:50:000
547348992611,5cyclictest828083-21latency_hist11:50:000
54734899261,12cyclictest5767492cut07:37:530
547353992518,6cyclictest865519-21kthreadcore12:27:542
547350992521,3cyclictest693812-21unixbench_multi09:33:031
547350992521,2cyclictest599102-21sendmail08:00:001
547350992521,2cyclictest0-21swapper/108:40:001
547350992520,3cyclictest0-21swapper/107:50:001
547350992518,5cyclictest609187-21latency_hist08:10:001
547348992522,2cyclictest547341-21cyclictest07:45:000
547348992521,2cyclictest767971-21grep10:48:050
547348992520,4cyclictest669288-21kworker/u8:1+flush-8:009:12:490
547348992520,3cyclictest1-21systemd07:15:010
547348992519,4cyclictest792902-21unixbench_multi11:13:040
547348992515,5cyclictest573-21runrttasks08:22:560
547353992421,2cyclictest848811-21fschecks_count12:12:482
547353992421,2cyclictest823659-21aten2_r5power_e11:47:472
547353992421,2cyclictest823659-21aten2_r5power_e11:47:472
547353992421,2cyclictest623787-21unixbench_multi08:23:042
547353992419,4cyclictest569003-21kworker/u8:1+flush-8:007:43:082
547353992418,4cyclictest615531-21kthreadcore08:17:532
547350992421,2cyclictest833035-21systemd-run11:55:001
547350992420,3cyclictest872561-21unixbench_singl12:33:041
547350992420,2cyclictest0-21swapper/112:27:571
547350992420,2cyclictest0-21swapper/110:27:471
547350992420,2cyclictest0-21swapper/109:20:001
547348992419,3cyclictest876759-21latency12:37:560
547348992418,4cyclictest728639-21cron10:10:000
547348992418,4cyclictest631859-21tr08:32:530
547348992418,3cyclictest0-21swapper/010:53:040
547348992418,3cyclictest0-21swapper/009:42:560
547348992418,3cyclictest0-21swapper/009:32:490
547348992416,6cyclictest742719-21ntpq10:22:570
547353992320,2cyclictest808763-21fschecks_time11:32:482
547353992320,2cyclictest0-21swapper/208:00:012
547353992319,2cyclictest779091-21fschecks_count11:02:472
547353992319,2cyclictest0-21swapper/212:40:002
547353992317,4cyclictest558896-21unixbench_singl07:18:032
547353992317,4cyclictest275-21systemd-journal08:34:502
547353992317,4cyclictest0-21swapper/208:55:032
547350992319,3cyclictest799155-21tr11:22:511
547350992319,3cyclictest633969-21unixbench_singl08:33:041
547350992319,2cyclictest0-21swapper/111:00:011
547350992319,2cyclictest0-21swapper/107:52:491
547350992318,4cyclictest649096-21unixbench_singl08:48:051
547350992318,4cyclictest618814-21unixbench_multi08:18:041
547350992318,4cyclictest495068-21kworker/u8:0+flush-8:007:32:501
547350992318,3cyclictest0-21swapper/111:33:001
54734899232,19cyclictest758362-21kworker/0:0+events11:17:540
547348992319,2cyclictest858003-21sh12:20:000
547348992319,2cyclictest0-21swapper/009:40:000
547348992318,3cyclictest714837-21sort09:57:510
547348992317,4cyclictest667949-21kthreadcore09:07:550
547348992317,3cyclictest0-21swapper/009:17:440
547353992219,2cyclictest833760-21fschecks_count11:57:492
547353992219,2cyclictest0-21swapper/208:55:002
547353992218,2cyclictest758871-21aten2_r5power_p10:42:462
547350992219,2cyclictest0-21swapper/110:03:051
547350992218,3cyclictest623813-21unixbench_multi08:23:041
547350992218,2cyclictest0-21swapper/110:37:541
547350992218,2cyclictest0-21swapper/110:07:581
547350992218,2cyclictest0-21swapper/107:15:031
547350992214,6cyclictest714281-21/usr/sbin/munin09:58:031
547350992213,7cyclictest817751-21seq11:38:051
547350992213,6cyclictest275-21systemd-journal07:43:441
547348992217,4cyclictest609203-21kworker/u8:0+events_unbound09:01:010
547348992216,4cyclictest743682-21kworker/u8:0+events_unbound10:35:000
547348992216,4cyclictest743682-21kworker/u8:0+events_unbound10:35:000
547348992216,3cyclictest0-21swapper/012:12:580
547353992116,3cyclictest853718-21cpuspeed_turbos12:17:472
547353992116,3cyclictest0-21swapper/210:25:002
547353992111,8cyclictest820833-21tr11:42:552
547350992118,2cyclictest0-21swapper/109:27:471
547350992118,2cyclictest0-21swapper/108:55:001
547350992117,3cyclictest683881-21unixbench_multi09:23:061
547350992117,3cyclictest683881-21unixbench_multi09:23:061
547350992117,2cyclictest0-21swapper/111:17:481
547350992117,2cyclictest0-21swapper/108:42:561
547350992117,2cyclictest0-21swapper/108:12:491
547350992116,3cyclictest0-21swapper/107:22:501
547350992115,4cyclictest0-21swapper/111:48:011
547350992115,4cyclictest0-21swapper/111:48:011
54734899216,3cyclictest0-21swapper/010:13:050
547348992117,2cyclictest0-21swapper/007:22:540
5767462200,5sleep30-21swapper/307:37:533
547353992017,2cyclictest784074-21fschecks_time11:07:482
547353992016,3cyclictest0-21swapper/208:50:002
547353992016,2cyclictest0-21swapper/211:12:462
547353992016,2cyclictest0-21swapper/210:30:002
547353992014,4cyclictest683910-21unixbench_singl09:23:062
547353992014,4cyclictest683910-21unixbench_singl09:23:062
547353992012,6cyclictest670923-21kthreadcore09:12:512
547350992016,2cyclictest0-21swapper/111:07:471
547350992016,2cyclictest0-21swapper/109:47:461
547348992015,3cyclictest0-21swapper/011:52:470
547348992010,8cyclictest0-21swapper/008:42:490
54735399192,13cyclictest732852-21ntpq10:12:592
547353991916,2cyclictest559606-21aten2_r5power_c07:22:452
547353991914,3cyclictest0-21swapper/207:40:012
54735399191,16cyclictest689755-21tr09:32:472
547353991910,7cyclictest868601-21fschecks_time12:32:492
54735399190,17cyclictest842538-21sed12:03:042
547348991913,4cyclictest589318-21kworker/u8:3+events_unbound07:57:510
54735399182,12cyclictest718103-21ntpq09:57:592
547353991815,2cyclictest698736-21unixbench_multi09:38:052
547353991815,1cyclictest0-21swapper/210:17:492
547353991814,2cyclictest0-21swapper/208:42:562
547353991814,2cyclictest0-21swapper/207:15:012
547353991813,4cyclictest0-21swapper/207:47:572
547353991810,6cyclictest766322-21tr10:47:542
547350991814,2cyclictest0-21swapper/111:57:481
5425982183,9sleep30-21swapper/307:05:323
5425622184,10sleep20-21swapper/207:05:022
5555042176,7sleep30-21swapper/307:17:523
54735399179,6cyclictest816737-21tr11:37:552
54735399175,4cyclictest0-21swapper/208:07:462
54735399173,12cyclictest769685-21cut10:52:532
547353991714,2cyclictest0-21swapper/207:28:022
547353991713,2cyclictest0-21swapper/211:28:162
547353991713,2cyclictest0-21swapper/211:22:452
547353991713,2cyclictest0-21swapper/211:18:002
547353991713,2cyclictest0-21swapper/210:02:472
547353991713,2cyclictest0-21swapper/207:52:502
547353991712,3cyclictest0-21swapper/210:35:002
547353991712,3cyclictest0-21swapper/210:35:002
547353991613,1cyclictest0-21swapper/209:47:552
547353991612,2cyclictest0-21swapper/209:27:552
8470342144,6sleep30-21swapper/312:07:583
5732622147,4sleep30-21swapper/307:33:003
8678432132,6sleep30-21swapper/312:30:013
8671532132,7sleep30-21swapper/312:28:013
8581652132,6sleep30-21swapper/312:20:023
8573212134,5sleep30-21swapper/312:18:013
7932812132,6sleep30-21swapper/311:15:023
7682722132,6sleep30-21swapper/310:50:023
7623992132,7sleep30-21swapper/310:42:563
7540532132,7sleep30-21swapper/310:37:503
7483972132,8sleep30-21swapper/310:30:003
5838872132,7sleep30-21swapper/307:45:003
8485182122,6sleep30-21swapper/312:12:443
8354252122,6sleep30-21swapper/311:57:553
8324012122,6sleep30-21swapper/311:53:023
8240962122,6sleep30-21swapper/311:47:523
8240962122,6sleep30-21swapper/311:47:523
8181632122,5sleep30-21swapper/311:40:023
8139572122,6sleep30-21swapper/311:37:533
8120882123,5sleep30-21swapper/311:32:553
8030392122,5sleep30-21swapper/311:25:013
7929262122,6sleep30-21swapper/311:13:053
7787002123,6sleep30-21swapper/311:01:463
7737492122,6sleep30-21swapper/310:57:483
7345332122,6sleep30-21swapper/310:17:523
7286762122,6sleep30-21swapper/310:10:013
7281742123,6sleep30-21swapper/310:08:053
7190272122,5sleep30-21swapper/310:00:023
7181542122,6sleep30-21swapper/309:58:023
7133772122,6sleep30-21swapper/309:53:043
6899052122,6sleep30-21swapper/309:32:503
6845522122,6sleep30-21swapper/309:27:443
6755712122,6sleep30-21swapper/309:17:533
6735832122,6sleep30-21swapper/309:13:003
6643542122,5sleep30-21swapper/309:05:013
6534602122,6sleep30-21swapper/308:52:573
6492152123,6sleep30-21swapper/308:49:093
6398632122,6sleep30-21swapper/308:42:463
6283912122,6sleep30-21swapper/308:28:023
6236472122,6sleep30-21swapper/308:23:043
6141602122,6sleep30-21swapper/308:15:023
5995182122,6sleep30-21swapper/308:02:383
5476702122,6sleep30-21swapper/307:12:303
8756972112,6sleep30-21swapper/312:37:563
8382162112,6sleep30-21swapper/312:00:243
7985322112,6sleep30-21swapper/311:22:403
7881212112,6sleep30-21swapper/311:08:403
7678562112,5sleep30-21swapper/310:48:053
7486432112,6sleep30-21swapper/310:30:083
7486432112,6sleep30-21swapper/310:30:083
7039812112,5sleep30-21swapper/309:45:023
6949292112,6sleep30-21swapper/309:37:513
6794752113,5sleep30-21swapper/309:21:103
6794752113,5sleep30-21swapper/309:21:103
6597462112,6sleep30-21swapper/309:01:253
6344002112,6sleep30-21swapper/308:35:083
6341042113,5sleep30-21swapper/308:34:253
6094242112,5sleep30-21swapper/308:10:123
6044762112,5sleep30-21swapper/308:05:023
5944322112,6sleep30-21swapper/307:56:323
5642942112,5sleep30-21swapper/307:25:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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