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2026-09-01 - 17:21

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 highest latencies:
System rack5slot4s.osadl.org (updated Tue Sep 01, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29678852710,1chrt2967886-21basename12:17:280
27946142670,3chrt2794619-21fschecks_time09:22:321
2662874996345,15cyclictest2818622-21latency_hist09:45:010
2662874995538,14cyclictest2768994-21latency_hist08:55:010
28972712510,3sleep3575-21kworker/3:2+events11:02:393
2662874995031,17cyclictest2893030-21latency_hist11:00:000
2662874994822,23cyclictest2933563-21diskstats11:42:320
2662874994822,23cyclictest2933563-21diskstats11:42:310
2662878994741,5cyclictest2918261-21kworker/u8:3+flush-8:012:27:281
2662878994741,4cyclictest2863098-21latency_hist10:30:011
2662878994741,4cyclictest2852427-21kworker/u8:1+events_unbound10:42:351
2662874994738,6cyclictest2882878-21latency_hist10:50:000
2662878994641,4cyclictest2918261-21kworker/u8:3+events_unbound12:22:461
2662878994640,4cyclictest2918261-21kworker/u8:3+events_unbound12:12:311
2662878994541,3cyclictest2689277-21kworker/u8:0+events_unbound07:47:461
2662878994539,4cyclictest2728963-21kworker/u8:2+events_unbound08:37:461
2662878994440,3cyclictest1641982-21kworker/u8:1+events_unbound07:25:011
2662878994339,3cyclictest2769229-21kworker/u8:2+events_unbound09:17:431
2662878994339,3cyclictest1641982-21kworker/u8:1+events_unbound07:42:461
2662878994335,5cyclictest2748950-21latency_hist08:35:011
266287499420,28cyclictest1-21systemd07:28:430
2662874994125,13cyclictest2867750-21grep10:32:490
2662878994035,4cyclictest2918261-21kworker/u8:3+flush-8:012:02:321
2662878994034,4cyclictest2808942-21kworker/u8:0+flush-8:009:37:461
2662874994031,7cyclictest2877968-21latency_hist10:45:010
2662874994023,14cyclictest2808705-21systemd-run09:35:000
2662874994022,15cyclictest2674639-21latency_hist07:20:010
2662874994014,23cyclictest2967459-21latency_hist12:15:010
266287499400,24cyclictest1-21systemd11:20:530
2662880993927,9cyclictest275-21systemd-journal08:40:002
2662878993934,3cyclictest2748787-21kworker/u8:1+events_unbound09:12:321
2662878993933,5cyclictest2643172-21kworker/u8:3+events_unbound07:12:441
2662878993933,4cyclictest2912854-21kworker/u8:0+flush-8:011:37:341
2662878993933,4cyclictest2912854-21kworker/u8:0+flush-8:011:37:341
2662878993933,4cyclictest2898047-21kworker/u8:1+events_unbound11:52:411
2662878993833,4cyclictest2937642-21kworker/u8:2+events_unbound11:57:411
2662878993832,4cyclictest2842595-21kworker/u8:3+flush-8:010:52:421
2662878993832,4cyclictest2748787-21kworker/u8:1+flush-8:009:32:441
2662878993831,5cyclictest1641982-21kworker/u8:1+flush-8:007:57:441
2662874993828,8cyclictest2733353-21ntpq08:17:400
2662878993732,4cyclictest2643172-21kworker/u8:3+events_unbound09:07:401
2662878993731,4cyclictest1641982-21kworker/u8:1+flush-8:008:02:401
2662874993729,5cyclictest2982006-21grep12:27:460
2662874993729,5cyclictest2943206-21apt-get11:52:280
2662874993728,6cyclictest2927916-21latency_hist11:35:010
2662874993719,15cyclictest2763588-21grep08:47:480
2662878993632,3cyclictest2912854-21kworker/u8:0+events_unbound11:42:321
2662878993632,3cyclictest2912854-21kworker/u8:0+events_unbound11:42:321
2662878993629,5cyclictest275-21systemd-journal08:14:431
2662878993629,5cyclictest2643172-21kworker/u8:3+flush-8:007:32:331
2662874993619,15cyclictest0-21swapper/008:57:370
2662874993618,15cyclictest0-21swapper/009:22:420
2662874993617,17cyclictest0-21swapper/008:07:480
2662874993616,17cyclictest0-21swapper/011:07:410
2662878993530,3cyclictest2754203-21kworker/u8:0+events_unbound08:52:351
2662878993530,3cyclictest2748787-21kworker/u8:1+flush-8:009:47:331
2662878993529,4cyclictest2748787-21kworker/u8:1+events_unbound09:02:311
266287499359,2cyclictest0-21swapper/010:12:320
2662874993529,4cyclictest2739516-21apt-get08:27:270
2662874993519,13cyclictest0-21swapper/008:12:430
2662874993517,16cyclictest2829494-21irqcore09:57:360
2662874993517,16cyclictest2778925-21idleruntime-cro09:05:000
2662874993516,17cyclictest0-21swapper/010:37:390
2662874993516,17cyclictest0-21swapper/008:22:320
2662874993516,16cyclictest0-21swapper/009:07:430
2662874993514,18cyclictest0-21swapper/009:52:370
266287499351,12cyclictest2953093-21apt-get12:02:290
26582462354,9sleep10-21swapper/107:07:381
2662878993430,3cyclictest2882201-21kworker/u8:0+flush-8:010:57:431
2662878993429,4cyclictest2898047-21kworker/u8:1+events_unbound11:47:361
2662878993429,4cyclictest2898047-21kworker/u8:1+events_unbound11:47:361
2662878993428,4cyclictest2912854-21kworker/u8:0+flush-8:011:22:431
2662878993427,5cyclictest275-21systemd-journal10:08:511
2662874993427,5cyclictest2852427-21kworker/u8:1+flush-8:010:22:330
2662874993417,15cyclictest2918722-21tune2fs11:27:320
2662874993416,15cyclictest0-21swapper/007:52:470
2662874993414,18cyclictest2704188-21unixbench_singl07:47:480
266287499340,9cyclictest2928285-21sshd11:36:530
266287499340,9cyclictest2928285-21sshd11:36:530
2662878993328,3cyclictest2824187-21cpuspeed_turbos09:52:311
2662878993327,5cyclictest1641982-21kworker/u8:1+flush-8:008:07:361
2662878993327,4cyclictest2937642-21kworker/u8:2+events_unbound12:17:361
2662878993327,4cyclictest2643172-21kworker/u8:3+flush-8:008:22:441
2662878993326,5cyclictest275-21systemd-journal11:04:531
266287499332,9cyclictest2942086-21ntpq11:47:440
266287499332,9cyclictest2942086-21ntpq11:47:440
266287499332,11cyclictest2883315-21apt-get10:52:270
266287499331,9cyclictest2907385-21ntpq11:12:440
266287499331,9cyclictest2748212-21ntpq08:32:410
2662874993318,13cyclictest0-21swapper/009:46:480
2662874993317,14cyclictest0-21swapper/007:22:460
2662874993316,14cyclictest0-21swapper/008:42:380
2662874993313,18cyclictest0-21swapper/007:40:010
2662874993311,5cyclictest2716311-21cut08:02:340
266287499331,10cyclictest2852446-21ntpq10:17:410
266287499331,10cyclictest2713707-21/usr/sbin/munin07:57:450
2662880993222,8cyclictest2763817-21apt-get08:50:002
2662878993228,3cyclictest2748787-21kworker/u8:1+events_unbound10:02:311
2662878993226,5cyclictest2852427-21kworker/u8:1+events_unbound10:32:311
2662878993226,4cyclictest2852427-21kworker/u8:1+flush-8:010:22:371
2662878993226,4cyclictest2842595-21kworker/u8:3+events_unbound10:37:421
2662874993217,13cyclictest0-21swapper/007:42:370
2662874993215,15cyclictest0-21swapper/010:27:330
2662874993213,17cyclictest0-21swapper/012:37:360
2662874993211,5cyclictest2837095-21tr10:02:380
2662874993211,2cyclictest0-21swapper/011:57:480
266287499321,10cyclictest2663202-21apt-get07:12:310
2662874993210,7cyclictest2896730-21cut11:02:380
2662878993126,4cyclictest2842595-21kworker/u8:3+events_unbound11:12:421
2662878993126,3cyclictest2983315-21irqcore12:32:351
2662874993113,2cyclictest0-21swapper/012:07:430
2662874993113,16cyclictest0-21swapper/008:37:420
2662878993026,3cyclictest2842595-21kworker/u8:3+events_unbound10:12:311
2662878993025,3cyclictest2842595-21kworker/u8:3+flush-8:011:07:321
2662878993024,4cyclictest2852427-21kworker/u8:1+events_unbound10:17:461
2662878993024,4cyclictest2748787-21kworker/u8:1+flush-8:009:42:311
2662878993023,6cyclictest2908527-21apt-get11:17:291
2662878993023,5cyclictest2918261-21kworker/u8:3+flush-8:012:07:431
2662878993023,5cyclictest2748787-21kworker/u8:1+flush-8:009:57:421
2662878993022,6cyclictest275-21systemd-journal08:26:431
266287499305,8cyclictest2838792-21apt-get10:07:280
2662874993014,14cyclictest0-21swapper/007:32:370
2662874993012,4cyclictest1-21systemd09:36:550
2662874993011,2cyclictest0-21swapper/009:16:060
266287499301,10cyclictest571-21snmpd12:32:410
2662874993010,3cyclictest0-21swapper/009:27:350
266287499300,12cyclictest20823-21cron09:15:000
2662878992925,3cyclictest2912854-21kworker/u8:0+events_unbound11:32:401
2662878992925,3cyclictest2769229-21kworker/u8:2+flush-8:009:26:511
2662878992925,2cyclictest0-21swapper/109:00:001
2662878992924,4cyclictest1641982-21kworker/u8:1+events_unbound07:52:491
2662878992923,5cyclictest2643172-21kworker/u8:3+flush-8:007:17:321
266287499297,3cyclictest0-21swapper/007:10:010
266287499292,10cyclictest2976636-21ntpq12:22:420
2662880992825,2cyclictest2882597-21unixbench_multi10:47:482
2662880992825,2cyclictest2769487-21aten2_r5power_e08:57:302
2662880992821,5cyclictest275-21systemd-journal12:00:012
2662874992811,15cyclictest0-21swapper/011:17:320
2662878992723,3cyclictest2643172-21kworker/u8:3+flush-8:007:27:371
2662878992722,4cyclictest2728963-21kworker/u8:2+events_unbound08:17:461
2662878992722,3cyclictest2690514-21irqcore07:37:361
2662878992720,5cyclictest2912854-21kworker/u8:0+flush-8:011:27:361
2662880992622,2cyclictest2689243-21unixbench_singl07:32:482
2662880992621,3cyclictest2818384-21unixbench_singl09:42:482
2662878992622,3cyclictest2748787-21kworker/u8:1+flush-8:008:45:511
2662878992621,4cyclictest2754203-21kworker/u8:0+flush-8:008:42:371
2662878992619,5cyclictest2852427-21kworker/u8:1+flush-8:010:47:411
266288099257,3cyclictest0-21swapper/211:07:422
266288099255,10cyclictest0-21swapper/212:29:312
2662880992522,2cyclictest2888044-21latency_hist10:55:002
2662880992522,2cyclictest2715144-21fschecks_time08:02:302
2662880992520,4cyclictest2748726-21unixbench_singl08:32:482
2662880992520,4cyclictest2734123-21sendmail08:20:002
266288099244,3cyclictest2832718-21taskset09:57:442
2662880992421,2cyclictest371rcuc/211:54:072
2662880992421,2cyclictest2844018-21fschecks_count10:12:322
2662880992421,2cyclictest2700216-21fschecks_time07:47:312
2662880992420,2cyclictest2852972-21unixbench_singl10:17:482
2662880992415,8cyclictest2793807-21turbostat.cron09:20:002
2662880992414,5cyclictest2953093-21apt-get12:02:282
2662878992419,4cyclictest2898047-21kworker/u8:1+events_unbound12:37:461
2662880992320,2cyclictest371rcuc/209:36:552
2662880992320,2cyclictest371rcuc/208:53:372
2662880992319,2cyclictest2833942-21aten2_r5power_p10:02:292
2662880992319,2cyclictest0-21swapper/212:35:002
2662880992318,4cyclictest2738808-21unixbench_multi08:22:492
2662880992318,3cyclictest2674402-21unixbench_singl07:17:472
2662880992316,5cyclictest275-21systemd-journal08:06:332
266288099231,11cyclictest2743292-21ntpq08:27:412
266288099230,9cyclictest2864005-21awk10:32:352
266288099226,5cyclictest0-21swapper/210:37:412
266288099223,5cyclictest0-21swapper/207:40:062
266288099222,4cyclictest0-21swapper/212:12:452
2662880992219,2cyclictest2774698-21fschecks_count09:02:332
2662880992217,3cyclictest2694247-21unixbench_singl07:37:492
2662880992214,6cyclictest275-21systemd-journal11:15:002
2662880992212,8cyclictest2678385-21cut07:22:392
2662880992210,4cyclictest0-21swapper/211:47:372
2662880992210,4cyclictest0-21swapper/211:47:372
266288099216,5cyclictest0-21swapper/211:31:012
266288099215,3cyclictest0-21swapper/209:22:442
266288099214,8cyclictest0-21swapper/211:24:142
266288099214,4cyclictest0-21swapper/212:37:462
266288099213,5cyclictest0-21swapper/210:22:372
266288099212,9cyclictest0-21swapper/212:22:082
266288099212,5cyclictest0-21swapper/210:57:302
266288099212,4cyclictest0-21swapper/208:44:262
266288099212,18cyclictest0-21swapper/211:27:462
2662880992118,2cyclictest2858817-21cpuspeed_turbos10:27:282
2662880992118,2cyclictest2843063-21unixbench_singl10:07:482
2662880992117,2cyclictest2937574-21unixbench_singl11:42:482
2662880992117,2cyclictest2937574-21unixbench_singl11:42:482
2662880992112,7cyclictest2667762-21cron07:15:002
2662880992112,4cyclictest2728384-21ntpq08:12:402
266288099210,7cyclictest2799654-21awk09:27:342
266288099210,11cyclictest2908898-21fw_packets11:17:342
266288099210,10cyclictest2683784-21ntpq07:27:432
26626602214,10sleep20-21swapper/207:09:432
266288099202,9cyclictest39-21ksoftirqd/207:50:442
266288099202,6cyclictest0-21swapper/209:12:482
266288099202,4cyclictest0-21swapper/212:17:402
2662880992017,2cyclictest2710037-21cpuspeed_turbos07:57:312
2662880992012,2cyclictest161rcu_preempt09:52:362
266288099194,5cyclictest0-21swapper/212:05:092
266288099194,4cyclictest0-21swapper/211:03:132
266288099194,4cyclictest0-21swapper/209:08:182
2662880991916,2cyclictest2929285-21kthreadcore11:37:372
2662880991916,2cyclictest2929285-21kthreadcore11:37:362
26582552192,10sleep30-21swapper/307:07:443
266288099184,5cyclictest0-21swapper/209:45:432
266288099184,5cyclictest0-21swapper/209:33:202
266288099183,5cyclictest0-21swapper/210:42:222
29535832132,7sleep30-21swapper/312:02:353
29392382132,8sleep30-21swapper/311:47:383
29392382132,8sleep30-21swapper/311:47:383
28872052132,7sleep30-21swapper/310:52:453
28276562132,7sleep30-21swapper/309:52:413
28235162133,6sleep30-21swapper/309:50:003
28156512132,7sleep30-21swapper/309:42:383
27684872132,7sleep30-21swapper/308:52:463
27638092132,6sleep30-21swapper/308:50:013
27291872132,6sleep30-21swapper/308:15:023
27044462132,6sleep30-21swapper/307:50:023
26837372132,7sleep30-21swapper/307:27:423
29787152122,6sleep30-21swapper/312:27:353
29728822123,6sleep30-21swapper/312:22:303
29710882122,6sleep30-21swapper/312:17:403
29625422122,6sleep30-21swapper/312:10:013
29494152122,6sleep30-21swapper/311:57:373
29131022122,5sleep30-21swapper/311:20:013
29084582122,6sleep30-21swapper/311:17:003
28879592122,5sleep30-21swapper/310:55:013
28725072122,6sleep30-21swapper/310:37:483
28631232122,5sleep30-21swapper/310:30:013
28623662122,6sleep30-21swapper/310:27:403
28437002122,6sleep30-21swapper/310:12:283
28383742122,5sleep30-21swapper/310:05:013
28341312122,6sleep30-21swapper/310:02:323
28286872122,5sleep30-21swapper/309:55:023
27977922122,6sleep30-21swapper/309:22:393
27888102122,5sleep30-21swapper/309:15:013
27847832122,6sleep30-21swapper/309:12:363
27726962122,6sleep30-21swapper/308:57:393
27539792122,5sleep30-21swapper/308:40:023
27496392122,6sleep30-21swapper/308:37:333
27395202122,6sleep30-21swapper/308:27:303
27349912122,6sleep30-21swapper/308:22:363
27008802120,7sleep30-21swapper/307:47:373
26942702122,6sleep30-21swapper/307:37:503
26852022122,6sleep30-21swapper/307:32:323
26697322122,6sleep30-21swapper/307:15:063
29872842112,5sleep30-21swapper/312:35:023
29825602112,6sleep30-21swapper/312:30:443
29589172112,5sleep30-21swapper/312:07:373
29431782112,6sleep30-21swapper/311:52:283
29328232112,5sleep30-21swapper/311:39:483
29328232112,5sleep30-21swapper/311:39:483
29234032112,5sleep30-21swapper/311:32:293
29183702112,6sleep30-21swapper/311:26:563
29033722112,5sleep30-21swapper/311:10:023
28989082112,6sleep30-21swapper/311:07:333
28784912112,5sleep30-21swapper/310:47:313
28534502112,5sleep30-21swapper/310:20:023
28495842111,6sleep30-21swapper/310:17:373
28089312112,5sleep30-21swapper/309:35:243
28039122112,5sleep30-21swapper/309:30:023
28029372112,5sleep30-21swapper/309:27:413
27786202112,5sleep30-21swapper/309:02:493
27442602112,5sleep30-21swapper/308:30:023
27291392113,5sleep30-21swapper/308:14:543
27195152112,5sleep30-21swapper/308:05:023
27149992112,5sleep30-21swapper/308:02:303
27097762112,6sleep30-21swapper/307:57:163
26947232112,5sleep30-21swapper/307:40:023
26749032113,5sleep30-21swapper/307:20:203
26630142112,5sleep30-21swapper/307:10:253
29331002102,5sleep30-21swapper/311:40:043
29331002102,5sleep30-21swapper/311:40:043
28732352102,5sleep30-21swapper/310:40:043
27791552102,5sleep30-21swapper/309:05:063
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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