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2026-03-25 - 16:33

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
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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 Wed Mar 25, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1915802910,3chrt75-21kworker/3:1-events08:16:273
4451082890,3chrt445107-21sh12:30:002
2520622620,4chrt75-21kworker/3:1-events09:16:343
124896995449,4cyclictest410532-21kworker/u8:0+events_unbound11:56:411
124896994842,4cyclictest375666-21kworker/u8:0+events_unbound11:26:441
124896994841,5cyclictest291095-21kworker/u8:3+events_unbound11:21:411
124896994841,5cyclictest151641-21kworker/u8:2+flush-8:007:46:401
124896994737,7cyclictest225521-21ntpq08:46:401
124890994738,7cyclictest251061-21latency_hist09:15:010
3841772460,5sleep30-21swapper/311:26:363
124896994640,4cyclictest176472-21kworker/u8:1+events_unbound10:16:391
124896994541,3cyclictest410532-21kworker/u8:0+events_unbound12:35:011
124896994540,3cyclictest176472-21kworker/u8:1+events_unbound09:41:411
124890994537,5cyclictest226366-21latency_hist08:50:010
124896994439,4cyclictest306244-21kworker/u8:4+flush-8:010:51:411
124896994438,4cyclictest410532-21kworker/u8:0+events_unbound12:25:011
124890994437,5cyclictest410066-21apt-get11:55:000
124890994437,5cyclictest291095-21kworker/u8:3+flush-8:011:01:400
124896994337,4cyclictest291095-21kworker/u8:3+flush-8:010:06:311
124890994334,6cyclictest176431-21latency_hist08:00:010
124896994238,3cyclictest306244-21kworker/u8:4+flush-8:010:41:471
124896994238,3cyclictest176472-21kworker/u8:1+events_unbound08:31:481
124896994237,3cyclictest390120-21kworker/u8:2+events_unbound11:41:281
124896994236,4cyclictest211773-21kworker/u8:0+events_unbound09:01:291
124896994236,4cyclictest176472-21kworker/u8:1+events_unbound08:55:001
124896994235,6cyclictest291095-21kworker/u8:3+flush-8:011:01:411
124896994235,6cyclictest291095-21kworker/u8:3+flush-8:009:56:411
124896994235,5cyclictest306244-21kworker/u8:4+events_unbound10:21:441
124896994234,6cyclictest119646-21kworker/u8:0+flush-8:007:36:351
124896994226,5cyclictest151641-21kworker/u8:2+flush-8:008:26:441
124890994237,4cyclictest119646-21kworker/u8:0+events_unbound08:25:000
124896994136,4cyclictest211773-21kworker/u8:0+events_unbound09:11:411
124896994136,4cyclictest151641-21kworker/u8:2+events_unbound08:06:301
124896994135,4cyclictest306244-21kworker/u8:4+flush-8:011:16:401
124896994135,4cyclictest291095-21kworker/u8:3+events_unbound10:36:281
124896994134,5cyclictest375666-21kworker/u8:0+flush-8:011:31:401
124890994136,3cyclictest330004-21kworker/u8:0+events_unbound10:46:340
124896994035,4cyclictest291095-21kworker/u8:3+events_unbound12:01:421
124896994035,3cyclictest390120-21kworker/u8:2+events_unbound11:40:001
124896994035,3cyclictest360365-21kworker/u8:1+events_unbound11:11:391
124896994034,5cyclictest255996-21kworker/u8:2+flush-8:009:51:421
124896994034,4cyclictest410532-21kworker/u8:0+events_unbound12:26:411
124896994033,6cyclictest291095-21kworker/u8:3+flush-8:011:06:311
124896994033,6cyclictest291095-21kworker/u8:3+flush-8:011:06:311
124898993932,5cyclictest390283-21sh11:35:002
124896993934,3cyclictest291095-21kworker/u8:3+flush-8:010:26:491
124896993834,3cyclictest330004-21kworker/u8:0+events_unbound10:56:351
124896993832,4cyclictest151641-21kworker/u8:2+events_unbound08:01:391
124896993831,5cyclictest410532-21kworker/u8:0+flush-8:012:06:401
124896993831,5cyclictest119646-21kworker/u8:0+flush-8:008:11:431
124890993833,3cyclictest291095-21kworker/u8:3+flush-8:011:21:460
124890993827,9cyclictest281631-21diskstats09:46:300
124896993733,3cyclictest410532-21kworker/u8:0+events_unbound12:16:351
124896993732,4cyclictest211773-21kworker/u8:0+events_unbound09:21:351
124896993731,4cyclictest151641-21kworker/u8:2+flush-8:008:21:471
124896993730,5cyclictest176472-21kworker/u8:1+flush-8:008:56:421
124896993730,5cyclictest176472-21kworker/u8:1+flush-8:008:56:421
124896993631,3cyclictest360365-21kworker/u8:1+events_unbound11:46:431
124890993632,3cyclictest211773-21kworker/u8:0+events_unbound09:25:070
124890993630,4cyclictest206925-21apt-get08:31:290
3178682350,2sleep0201rcuc/010:21:360
124896993530,3cyclictest151641-21kworker/u8:2+events_unbound07:41:331
124896993529,4cyclictest410532-21kworker/u8:0+flush-8:012:36:471
124896993529,4cyclictest211773-21kworker/u8:0+events_unbound09:06:351
124896993528,5cyclictest119646-21kworker/u8:0+flush-8:007:21:411
124896993428,4cyclictest306244-21kworker/u8:4+events_unbound10:31:311
124890993429,4cyclictest255996-21kworker/u8:2+flush-8:009:31:400
124890993429,3cyclictest305788-21idleruntime-cro10:10:000
124890993428,4cyclictest390120-21kworker/u8:2+flush-8:011:41:450
124890993428,4cyclictest190933-21grep08:11:490
124896993329,2cyclictest426435-21irqrtprio12:11:341
124896993327,4cyclictest265946-21kworker/u8:4+flush-8:009:31:471
124896993327,4cyclictest151641-21kworker/u8:2+flush-8:008:41:371
124896993327,4cyclictest119646-21kworker/u8:0+flush-8:007:26:451
124890993329,3cyclictest291095-21kworker/u8:3+flush-8:011:36:310
124890993328,4cyclictest176472-21kworker/u8:1+flush-8:010:01:290
124890993328,4cyclictest151641-21kworker/u8:2+flush-8:007:41:400
124890993326,5cyclictest444838-21unixbench_singl12:26:470
124890993326,5cyclictest136409-21unixbench_singl07:16:470
124890993319,12cyclictest254279-21kthreadcore09:16:370
1199592334,9sleep20-21swapper/207:05:522
4065812320,4sleep20-21swapper/211:51:362
124898993226,4cyclictest355672-21cron11:00:002
124896993228,3cyclictest119646-21kworker/u8:0+flush-8:007:51:371
124896993226,5cyclictest291095-21kworker/u8:3+flush-8:011:51:401
124890993227,3cyclictest137184-21aten2_r5power_p07:21:300
124890993224,6cyclictest420867-21aten2_r5power_p12:06:280
124890993224,6cyclictest346054-21aten2_r5power_v10:51:280
124896993127,3cyclictest119646-21kworker/u8:0+flush-8:008:16:471
124896993122,7cyclictest299929-21ntpq10:01:381
124890993126,4cyclictest410532-21kworker/u8:0+events_unbound12:36:320
124890993126,4cyclictest119646-21kworker/u8:0+events_unbound07:31:280
124890993119,3cyclictest119646-21kworker/u8:0+flush-8:008:15:210
124898993024,4cyclictest380051-21unixbench_multi11:21:472
124896993024,4cyclictest265946-21kworker/u8:4+flush-8:009:36:371
124896993023,5cyclictest151641-21kworker/u8:2+flush-8:008:36:361
124896993018,3cyclictest421rcuog/209:16:421
124890993025,4cyclictest280-21systemd-journal10:20:000
124890993024,4cyclictest211773-21kworker/u8:0+events_unbound09:21:330
124898992925,2cyclictest380785-21aten2_r5power_c11:26:282
124898992923,4cyclictest290556-21unixbench_singl09:51:472
124896992925,2cyclictest176082-21unixbench_multi07:56:481
124896992911,7cyclictest308780-21tr10:11:361
124890992924,4cyclictest410532-21kworker/u8:0+events_unbound12:16:470
124890992923,4cyclictest142607-21irqcore07:26:350
124890992920,7cyclictest430295-21latency_hist12:15:010
124898992824,3cyclictest275811-21latency_hist09:40:012
124898992823,4cyclictest176472-21kworker/u8:1+flush-8:008:56:462
124898992823,4cyclictest176472-21kworker/u8:1+flush-8:008:56:462
124898992823,3cyclictest211210-21unixbench_singl08:31:492
124898992822,4cyclictest434913-21unixbench_singl12:16:472
124896992824,3cyclictest125078-21kworker/u8:1+events_unbound07:11:431
124896992822,4cyclictest125078-21kworker/u8:1+flush-8:007:16:421
124890992824,3cyclictest360365-21kworker/u8:1+flush-8:011:11:340
124890992824,3cyclictest211773-21kworker/u8:0+events_unbound08:36:450
124890992824,2cyclictest275488-21unixbench_multi09:36:490
124890992824,2cyclictest221395-21cron08:45:000
124890992823,3cyclictest410532-21kworker/u8:0+events_unbound11:56:470
124890992821,5cyclictest310742-21unixbench_singl10:11:470
124890992821,5cyclictest129548-21unixbench_singl07:11:460
124898992724,2cyclictest261431-21aten2_r5power_p09:26:302
124898992722,3cyclictest341297-21fschecks_count10:46:312
124898992717,8cyclictest410954-21fschecks_count11:56:312
124898992715,4cyclictest381ktimers/209:21:352
124890992723,3cyclictest375666-21kworker/u8:0+flush-8:011:31:350
124890992722,4cyclictest151641-21kworker/u8:2+flush-8:008:06:450
124890992722,3cyclictest291095-21kworker/u8:3+flush-8:012:01:350
124890992722,3cyclictest291095-21kworker/u8:3+flush-8:011:06:360
124890992722,3cyclictest291095-21kworker/u8:3+flush-8:011:06:360
124890992722,3cyclictest162224-21fschecks_count07:46:310
124890992721,5cyclictest306244-21kworker/u8:4+events_unbound10:41:390
124890992721,4cyclictest375413-21sh11:20:010
124890992721,4cyclictest180085-21runrttasks08:01:370
124890992721,4cyclictest0-21swapper/009:56:350
124890992719,6cyclictest206327-21latency_hist08:30:010
124898992623,2cyclictest177154-21fschecks_time08:01:312
124898992622,2cyclictest152321-21fschecks_time07:36:312
124898992621,3cyclictest251477-21aten2_r5power_e09:16:292
124896992622,3cyclictest330004-21kworker/u8:0+events_unbound10:46:301
124896992620,4cyclictest119646-21kworker/u8:0+events_unbound07:31:261
124896992619,5cyclictest401-21dbus-daemon09:50:011
124890992622,3cyclictest401485-21kthreadcore11:46:340
124890992621,3cyclictest449702-21unixbench_multi12:31:470
124890992621,3cyclictest440203-21systemd-run12:25:010
124890992621,3cyclictest291095-21kworker/u8:3+events_unbound10:26:450
124898992522,2cyclictest236874-21fschecks_count09:01:302
124898992520,3cyclictest425052-21unixbench_singl12:06:462
124898992520,3cyclictest306595-21cpuspeed_turbos10:11:292
124898992520,3cyclictest222002-21cpuspeed_turbos08:46:302
124898992516,7cyclictest182052-21fschecks_time08:06:312
124896992520,3cyclictest176472-21kworker/u8:1+flush-8:009:26:331
124890992521,3cyclictest280668-21unixbench_multi09:41:480
124890992521,3cyclictest176472-21kworker/u8:1+flush-8:009:52:450
124890992521,3cyclictest176472-21kworker/u8:1+flush-8:008:56:370
124890992521,3cyclictest176472-21kworker/u8:1+flush-8:008:56:370
1200312255,13sleep10-21swapper/107:06:271
124898992421,2cyclictest449759-21unixbench_singl12:31:482
124898992418,5cyclictest375056-21unixbench_multi11:16:462
124898992416,6cyclictest280727-21unixbench_singl09:41:482
124898992416,6cyclictest172164-21fschecks_time07:56:322
124890992419,3cyclictest0-21swapper/007:40:010
124890992416,6cyclictest241795-21diskstats09:06:310
124890992414,2cyclictest421rcuog/210:55:020
124898992320,2cyclictest137412-21fschecks_time07:21:332
124898992318,4cyclictest211773-21kworker/u8:0+flush-8:008:36:422
124898992318,3cyclictest217121-21fschecks_count08:41:312
124898992318,3cyclictest0-21swapper/209:46:332
124898992317,4cyclictest320576-21unixbench_singl10:21:482
124898992314,7cyclictest366147-21cpuspeed_turbos11:11:302
124898992314,7cyclictest200777-21unixbench_multi08:21:472
124898992314,7cyclictest162249-21fschecks_count07:46:312
124890992319,3cyclictest331152-21tr10:36:260
124890992319,3cyclictest211773-21kworker/u8:0+events_unbound09:01:340
124890992317,4cyclictest170446-21latency07:51:380
1244752232,15sleep00-21swapper/007:09:190
124898992218,3cyclictest211773-21kworker/u8:0+flush-8:009:06:442
124898992218,2cyclictest0-21swapper/207:15:062
124898992217,3cyclictest426029-21fschecks_time12:11:312
124898992213,7cyclictest361287-21fschecks_time11:06:312
124898992213,7cyclictest361287-21fschecks_time11:06:312
124898992213,7cyclictest167815-21kthreadcore07:51:352
124890992217,3cyclictest0-21swapper/011:26:330
124898992118,2cyclictest125314-21aten2_r5power_v07:11:292
124898992117,3cyclictest311601-21cpuspeed_turbos10:16:292
124898992117,2cyclictest356412-21fschecks_time11:01:312
124898992117,2cyclictest305436-21unixbench_multi10:06:462
124898992116,4cyclictest151641-21kworker/u8:2+flush-8:008:17:452
124898992116,3cyclictest390915-21fschecks_count11:36:312
124898992115,4cyclictest331343-21cpuspeed_turbos10:36:272
124898992115,4cyclictest321563-21fschecks_time10:26:342
124898992115,4cyclictest202081-21fschecks_time08:26:332
124898992113,6cyclictest435896-21fschecks_count12:21:312
124890992117,2cyclictest0-21swapper/010:31:320
124898992017,2cyclictest226989-21fschecks_count08:51:322
124898992016,2cyclictest296265-21aten2_r5power_p10:01:272
124898992016,2cyclictest0-21swapper/212:05:012
124898992016,2cyclictest0-21swapper/210:55:002
124898992016,2cyclictest0-21swapper/210:31:382
124898992014,4cyclictest336414-21fschecks_time10:41:312
124898992014,4cyclictest157879-21kthreadcore07:41:362
124890992016,2cyclictest0-21swapper/008:51:390
124898991915,2cyclictest0-21swapper/211:40:372
124898991915,2cyclictest0-21swapper/208:11:372
124898991915,2cyclictest0-21swapper/207:35:002
124898991814,2cyclictest142190-21aten2_r5power_v07:26:312
124898991810,6cyclictest453351-21tr12:36:372
1244062183,8sleep30-21swapper/307:08:263
12489899179,6cyclictest294542-21tr09:56:382
12489899178,7cyclictest266993-21sed09:31:342
1565632164,9sleep30-21swapper/307:40:003
12489899162,11cyclictest250493-21python309:11:462
124898991612,2cyclictest400826-21fschecks_count11:46:302
4392602132,7sleep30-21swapper/312:21:393
3944192132,7sleep30-21swapper/311:36:413
3406582132,7sleep30-21swapper/310:45:003
3021022132,7sleep30-21swapper/310:06:363
2461052132,5sleep30-21swapper/309:10:013
2411692132,7sleep30-21swapper/309:05:003
2321332132,7sleep30-21swapper/308:56:373
2321332132,7sleep30-21swapper/308:56:373
2312592132,6sleep30-21swapper/308:55:003
2005272133,6sleep30-21swapper/308:21:463
1804242132,7sleep30-21swapper/308:01:393
1367632132,6sleep30-21swapper/307:20:023
4547152122,6sleep30-21swapper/312:36:483
4302882122,5sleep30-21swapper/312:15:013
4204522122,5sleep30-21swapper/312:05:023
4194872122,6sleep30-21swapper/312:01:453
4055002122,6sleep30-21swapper/311:51:293
4043152122,6sleep30-21swapper/311:46:403
3952922122,6sleep30-21swapper/311:40:023
3760442122,6sleep30-21swapper/311:21:323
3713572123,6sleep30-21swapper/311:16:343
3431722122,6sleep30-21swapper/310:46:373
3320062122,6sleep30-21swapper/310:36:333
3264232122,6sleep30-21swapper/310:31:323
3162262122,6sleep30-21swapper/310:20:403
3119412122,6sleep30-21swapper/310:16:353
2958452122,6sleep30-21swapper/310:00:013
2908242122,6sleep30-21swapper/309:54:403
2709142122,5sleep30-21swapper/309:35:013
2672082122,6sleep30-21swapper/309:31:363
2464892122,6sleep30-21swapper/309:11:303
2239322122,6sleep30-21swapper/308:46:383
2205532122,6sleep30-21swapper/308:41:403
2074242122,6sleep30-21swapper/308:31:373
2063112122,6sleep30-21swapper/308:30:003
1870682122,6sleep30-21swapper/308:11:343
1817422122,6sleep30-21swapper/308:06:293
1714882122,5sleep30-21swapper/307:55:013
1655472122,6sleep30-21swapper/307:46:383
4453382112,5sleep30-21swapper/312:30:023
4444132112,5sleep30-21swapper/312:26:453
4256332112,6sleep30-21swapper/312:10:443
4106372112,5sleep30-21swapper/311:56:273
3871812112,5sleep30-21swapper/311:31:353
3659332112,6sleep30-21swapper/311:11:293
3612212112,5sleep30-21swapper/311:06:313
3612212112,5sleep30-21swapper/311:06:313
3557172112,5sleep30-21swapper/311:00:013
3548162112,5sleep30-21swapper/310:56:403
3457652112,5sleep30-21swapper/310:50:023
3209312112,5sleep30-21swapper/310:25:023
3063922112,5sleep30-21swapper/310:11:293
2857352113,5sleep30-21swapper/309:47:373
2764022112,5sleep30-21swapper/309:41:273
2613512112,5sleep30-21swapper/309:26:313
2564032112,5sleep30-21swapper/309:21:293
2144962112,5sleep30-21swapper/308:36:393
1568652112,6sleep30-21swapper/307:40:363
1510432112,6sleep30-21swapper/307:31:463
1419642112,5sleep30-21swapper/307:25:193
1320222113,5sleep30-21swapper/307:15:163
1260862112,5sleep30-21swapper/307:11:353
2910912102,5sleep30-21swapper/309:55:043
1667592102,5sleep30-21swapper/307:50:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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