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2026-06-21 - 09:34

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 Sun Jun 21, 2026 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93618521050,3sleep375-21kworker/3:1-events20:20:403
11443182810,6sleep3451irq_work/323:50:383
860317997368,4cyclictest1144546-21kworker/u8:3+flush-8:000:10:372
860317997368,4cyclictest1144546-21kworker/u8:3+flush-8:000:10:362
860317997368,3cyclictest834152-21kworker/u8:1+events_unbound22:50:392
860313997363,8cyclictest1139259-21ntpq23:45:361
860317997167,3cyclictest834152-21kworker/u8:1+events_unbound22:30:392
860313996937,8cyclictest1704890-21systemd-journal19:44:591
860311996964,3cyclictest834152-21kworker/u8:1+events_unbound22:00:340
86031199690,65cyclictest1-21systemd19:15:010
860317996858,8cyclictest1021008-21cp21:50:002
860317996762,4cyclictest834152-21kworker/u8:1+events_unbound23:00:372
860311996758,7cyclictest871098-21ntpq19:15:330
860317996560,3cyclictest1075568-21kworker/u8:0+events_unbound23:45:212
860313996558,5cyclictest965603-21ntpq20:50:341
860313996558,5cyclictest965603-21ntpq20:50:341
860317996459,4cyclictest834152-21kworker/u8:1+flush-8:022:05:402
860311996455,7cyclictest1020931-21gpgv21:50:010
860311996351,9cyclictest912306-21diskstats20:00:250
11345262600,2chrt75-21kworker/3:1+events23:40:383
860313995749,5cyclictest1059771-21ntpq22:25:341
860311995751,4cyclictest1124818-21kworker/u8:3+events_unbound23:40:000
860311995733,21cyclictest1160162-21/usr/sbin/munin00:10:320
860311995733,21cyclictest1160162-21/usr/sbin/munin00:10:320
860311995650,4cyclictest1075568-21kworker/u8:0+flush-8:023:55:350
860317995551,3cyclictest1124818-21kworker/u8:3+events_unbound23:40:312
860313995444,8cyclictest1154082-21ntpq00:00:331
860311995442,9cyclictest1110696-21diskstats23:20:240
860311995433,18cyclictest1060707-21latency_hist22:30:010
10372242530,1sleep11037226-21grep22:05:291
860313995245,5cyclictest845092-21kworker/u8:3+flush-8:019:25:381
860313995243,6cyclictest970571-21ntpq20:55:331
860313995243,6cyclictest970571-21ntpq20:55:331
860313995145,4cyclictest860183-21kworker/u8:0+events_unbound21:00:401
860311995142,7cyclictest1085665-21/usr/sbin/munin22:55:370
860313995044,4cyclictest864273-21ntpq19:10:341
860313995041,7cyclictest980527-21ntpq21:05:351
860313994941,6cyclictest867357-21apt-get19:15:201
860311994939,8cyclictest1140324-21/usr/sbin/munin23:50:310
860311994844,3cyclictest834152-21kworker/u8:1+events_unbound23:25:420
860311994836,9cyclictest1081025-21diskstats22:50:240
860313994741,4cyclictest845092-21kworker/u8:3+events_unbound19:45:011
860313994738,6cyclictest1065665-21latency_hist22:35:001
860313994737,7cyclictest860183-21kworker/u8:0+events_unbound20:25:331
860311994736,9cyclictest1704890-21systemd-journal22:30:310
860311994735,9cyclictest1180218-21diskstats00:30:240
860317994642,3cyclictest845092-21kworker/u8:3+events_unbound21:15:382
860317994636,7cyclictest1130260-21cat23:40:012
860313994639,5cyclictest912057-21apt-get20:00:201
860313994636,7cyclictest860183-21kworker/u8:0+events_unbound20:20:341
860313994632,11cyclictest1129963-21apt-get23:40:001
860313994536,6cyclictest952013-21apt-get20:40:201
860313994535,8cyclictest876071-21ntpq19:20:341
860311994527,16cyclictest876023-21needreboot19:20:310
860311994517,16cyclictest1076008-21cpuspeed22:45:220
860313994434,7cyclictest845092-21kworker/u8:3+flush-8:021:10:321
860311994437,5cyclictest1011565-21diskstats21:40:230
860311994336,5cyclictest834152-21kworker/u8:1+flush-8:023:10:430
860311994335,6cyclictest1021043-21kworker/u8:2+flush-8:000:00:310
860311994334,6cyclictest1174767-21latency_hist00:25:010
860311994311,3cyclictest421rcuog/219:45:330
860313994234,5cyclictest1165146-21apt-get00:15:211
860313994234,5cyclictest1165146-21apt-get00:15:201
860313994232,7cyclictest845092-21kworker/u8:3+flush-8:021:30:371
860317994137,3cyclictest860183-21kworker/u8:0+events_unbound20:10:002
86031199411,28cyclictest911483-21sshd19:56:320
860313994031,6cyclictest886872-21latency_hist19:35:011
860313994030,7cyclictest1704890-21systemd-journal21:45:001
860311994032,6cyclictest991530-21/usr/sbin/munin21:20:330
860311994020,17cyclictest1050816-21latency_hist22:20:010
860313993931,6cyclictest1046151-21apt-get22:15:201
860313993931,5cyclictest1704890-21systemd-journal23:29:301
860313993929,7cyclictest1704890-21systemd-journal23:11:321
860313993929,6cyclictest1704890-21systemd-journal20:05:311
860313993830,6cyclictest845092-21kworker/u8:3+flush-8:021:45:241
860313993830,5cyclictest860183-21kworker/u8:0+flush-8:019:35:251
860313993827,7cyclictest1704890-21systemd-journal23:51:311
860311993831,5cyclictest986553-21/usr/sbin/munin21:15:330
860311993825,11cyclictest941637-21true20:29:590
860311993815,21cyclictest0-21swapper/020:40:000
860317993732,3cyclictest834152-21kworker/u8:1+events_unbound21:40:212
860313993731,4cyclictest1105486-21apt-get23:15:181
860317993627,7cyclictest1145311-21apt-get23:55:212
860313993628,6cyclictest1155504-21diskstats00:05:241
860313993628,6cyclictest1155504-21diskstats00:05:231
860313993627,6cyclictest1075568-21kworker/u8:0+events_unbound23:55:281
860313993625,7cyclictest1704890-21systemd-journal20:10:321
860311993629,5cyclictest906834-21latency_hist19:55:010
860311993621,13cyclictest1109783-21unixbench_singl23:15:380
860311993619,15cyclictest966164-21unixbench_singl20:50:420
860311993619,15cyclictest966164-21unixbench_singl20:50:420
860311993619,15cyclictest1179313-21unixbench_singl00:25:410
860311993617,17cyclictest401-21dbus-daemon21:30:000
860311993616,17cyclictest930840-21ntpq20:15:340
8598992364,10sleep10-21swapper/119:07:181
860313993532,2cyclictest834152-21kworker/u8:1+flush-8:019:54:381
860313993529,4cyclictest834152-21kworker/u8:1+flush-8:022:00:241
860313993528,5cyclictest1001144-21cron21:30:001
86031199359,3cyclictest1069785-21ntpq22:35:380
860311993532,2cyclictest845092-21kworker/u8:3+flush-8:021:30:260
860311993528,5cyclictest951988-21/usr/sbin/munin20:40:370
860311993520,13cyclictest0-21swapper/021:00:000
860311993520,13cyclictest0-21swapper/020:59:590
860313993430,2cyclictest834152-21kworker/u8:1+events_unbound21:55:241
860313993429,4cyclictest845092-21kworker/u8:3+flush-8:021:20:381
860313993429,4cyclictest834152-21kworker/u8:1+flush-8:022:40:251
860313993427,5cyclictest986578-21apt-get21:15:201
860313993427,5cyclictest845092-21kworker/u8:3+events_unbound19:55:341
860313993426,6cyclictest1184879-21/usr/sbin/munin00:35:371
860311993415,17cyclictest1121032-21irqrtprio23:30:280
860317993329,3cyclictest834152-21kworker/u8:1+events_unbound20:43:412
860313993323,7cyclictest1124981-21latency_hist23:35:011
860311993322,9cyclictest892320-21diskstats19:40:240
86031199331,9cyclictest877430-21/usr/sbin/munin19:25:220
860311993318,13cyclictest0-21swapper/021:50:230
860311993318,13cyclictest0-21swapper/000:20:000
860311993318,13cyclictest0-21swapper/000:19:590
86031199331,5cyclictest1130982-21/usr/sbin/munin23:40:260
86031199331,10cyclictest887725-21ps19:35:280
860317993227,3cyclictest860183-21kworker/u8:0+events_unbound20:10:032
860317993227,3cyclictest834152-21kworker/u8:1+events_unbound22:45:082
860313993227,3cyclictest1010624-21unixbench_singl21:35:401
860313993226,4cyclictest834152-21kworker/u8:1+flush-8:021:50:381
860313993226,4cyclictest1134718-21grep23:40:381
860313993226,4cyclictest1075822-21apt-get22:45:201
86031199323,5cyclictest1070885-21apt-get22:40:200
860311993214,16cyclictest0-21swapper/023:00:300
860311993214,16cyclictest0-21swapper/021:55:230
860311993213,17cyclictest0-21swapper/000:05:410
860311993213,17cyclictest0-21swapper/000:05:400
860311993213,16cyclictest0-21swapper/022:05:340
860311993211,6cyclictest943975-21cut20:30:310
86031199321,11cyclictest917916-21sort20:05:280
86031199320,9cyclictest935797-21ntpq20:20:350
860317993125,4cyclictest885-21mta-sts-daemon20:00:272
860313993126,4cyclictest1075568-21kworker/u8:0+flush-8:023:05:371
860313993124,5cyclictest927091-21apt-get20:15:191
86031199319,6cyclictest1052041-21cut22:20:280
860311993126,3cyclictest1136364-21kthreadcore23:45:280
86031199311,9cyclictest982361-21/usr/sbin/munin21:10:270
86031199311,9cyclictest980711-21python321:05:370
86031199311,9cyclictest972206-21/usr/sbin/munin21:00:260
86031199311,9cyclictest921921-21/usr/sbin/munin20:10:180
86031199311,9cyclictest1185418-21/usr/sbin/munin00:35:290
860311993111,7cyclictest885941-21ntpq19:30:330
860317993026,3cyclictest1100590-21aten2_r5power_e23:10:212
860313993024,4cyclictest834152-21kworker/u8:1+flush-8:022:50:241
860313993024,4cyclictest1090644-21apt-get23:00:211
860313993023,5cyclictest951099-21grep20:35:381
86031199309,7cyclictest1042389-21cut22:10:310
860311993010,3cyclictest0-21swapper/023:05:280
86031199291,9cyclictest1006586-21diskstats21:35:240
860311992912,15cyclictest0-21swapper/020:45:260
860317992823,4cyclictest845092-21kworker/u8:3+events_unbound19:50:562
860317992819,7cyclictest981930-21fschecks_count21:10:222
860317992818,8cyclictest1704890-21systemd-journal20:40:002
860313992821,5cyclictest845092-21kworker/u8:3+flush-8:020:30:401
860313992821,5cyclictest834152-21kworker/u8:1+flush-8:022:10:361
860313992821,5cyclictest1704890-21systemd-journal20:46:301
860313992821,5cyclictest1172576-21kworker/u8:0+flush-8:000:20:371
9241742270,6sleep3451irq_work/320:10:293
860317992722,3cyclictest1045452-21grep22:10:442
860317992721,4cyclictest1184195-21unixbench_multi00:30:412
860313992719,6cyclictest1021043-21kworker/u8:2+flush-8:022:35:361
860313992623,2cyclictest1089984-21unixbench_singl22:55:421
860313992622,2cyclictest0-21swapper/123:20:251
860313992621,4cyclictest1021043-21kworker/u8:2+events_unbound22:20:341
860317992522,2cyclictest1105836-21fschecks_time23:15:232
860317992520,3cyclictest1021043-21kworker/u8:2+events_unbound00:25:072
860317992515,7cyclictest1704890-21systemd-journal23:10:002
860313992519,4cyclictest1021043-21kworker/u8:2+flush-8:000:25:421
86031199254,3cyclictest0-21swapper/019:10:000
860317992421,2cyclictest907135-21aten2_r5power_c19:55:222
860317992420,3cyclictest936305-21unixbench_singl20:20:412
860317992420,3cyclictest1021043-21kworker/u8:2+events_unbound22:59:382
860317992419,3cyclictest0-21swapper/222:30:002
860317992418,5cyclictest880-21mta-sts-daemon20:34:592
86031799237,3cyclictest10360602systemd-run22:05:002
86031799236,7cyclictest0-21swapper/221:52:512
860317992320,2cyclictest877486-21cpuspeed_turbos19:25:212
860317992319,2cyclictest941607-21cron20:30:002
860313992315,6cyclictest1021043-21kworker/u8:2+flush-8:000:30:361
860317992218,2cyclictest1055756-21cron22:24:592
860313992214,5cyclictest0-21swapper/100:10:251
860313992214,5cyclictest0-21swapper/100:10:241
86031799214,3cyclictest161rcu_preempt19:49:592
86031799212,9cyclictest10034721kthreadcore21:30:302
860317992118,2cyclictest867414-21aten2_r5power_e19:15:222
11749762210,5sleep375-21kworker/3:1-mm_percpu_wq00:25:003
86031799208,4cyclictest0-21swapper/219:10:372
86031799203,2cyclictest0-21swapper/200:35:222
86031799202,5cyclictest0-21swapper/221:07:492
860317992016,2cyclictest0-21swapper/222:15:312
860317992016,2cyclictest0-21swapper/220:55:322
860317992016,2cyclictest0-21swapper/220:55:312
860317992015,3cyclictest0-21swapper/200:10:002
860317992015,3cyclictest0-21swapper/200:10:002
8595362204,9sleep20-21swapper/219:05:402
10506292203,6sleep30-21swapper/322:17:483
86031799193,2cyclictest161rcu_preempt21:25:012
86031799192,4cyclictest0-21swapper/220:50:302
86031799192,4cyclictest0-21swapper/220:50:292
86031799192,2cyclictest161rcu_preempt19:25:002
860317991916,2cyclictest891772-21cron19:40:002
86031799191,5cyclictest1075568-21kworker/u8:0+writeback23:50:472
860317991915,2cyclictest1006395-21aten2_r5power_e21:35:222
860317991915,2cyclictest0-21swapper/219:45:012
860317991910,7cyclictest1154982-21turbostat.cron00:04:592
86031799190,11cyclictest8830551irqrtprio19:30:272
86031799182,2cyclictest0-21swapper/223:25:262
860317991815,2cyclictest927121-21aten2_r5power_c20:15:212
860317991815,2cyclictest876-21mta-sts-daemon22:35:322
860317991814,2cyclictest0-21swapper/221:55:402
860317991814,2cyclictest0-21swapper/221:00:402
860317991813,3cyclictest1072018-21cut22:40:282
86031799181,2cyclictest161rcu_preempt00:15:422
86031799181,2cyclictest161rcu_preempt00:15:412
860317991810,6cyclictest1170841-21sed00:20:282
8557472183,8sleep30-21swapper/319:05:253
86031799172,9cyclictest0-21swapper/221:25:242
86031799172,2cyclictest161rcu_preempt23:30:272
860317991713,2cyclictest0-21swapper/220:45:402
860317991712,3cyclictest0-21swapper/223:20:302
8772412154,7sleep30-21swapper/319:25:193
9813522132,6sleep30-21swapper/321:10:023
9519872133,6sleep30-21swapper/320:40:203
9407152132,7sleep30-21swapper/320:25:353
8977352132,7sleep30-21swapper/319:45:253
11790852133,6sleep30-21swapper/300:25:423
10993892132,7sleep30-21swapper/323:05:363
10854012132,7sleep30-21swapper/322:55:003
10409552132,6sleep30-21swapper/322:10:013
10268672132,7sleep30-21swapper/321:55:293
10060872132,6sleep30-21swapper/321:35:023
9840642122,6sleep30-21swapper/321:10:303
9756932122,6sleep30-21swapper/321:00:383
9308622122,6sleep30-21swapper/320:15:363
9173352122,6sleep30-21swapper/320:05:243
9120612123,6sleep30-21swapper/320:00:233
9068172122,5sleep30-21swapper/319:55:013
9024142122,6sleep30-21swapper/319:50:243
8875292122,6sleep30-21swapper/319:35:273
8720882122,5sleep30-21swapper/319:20:023
8708642122,6sleep30-21swapper/319:15:313
8608022122,6sleep30-21swapper/319:10:273
11604352122,6sleep30-21swapper/300:10:253
11604352122,6sleep30-21swapper/300:10:243
11553262122,6sleep30-21swapper/300:05:233
11553262122,6sleep30-21swapper/300:05:233
11252532122,6sleep30-21swapper/323:35:213
11243222122,6sleep30-21swapper/323:30:393
11154062122,6sleep30-21swapper/323:25:223
11063732123,5sleep30-21swapper/323:15:273
10904752122,6sleep30-21swapper/323:00:023
10894592123,6sleep30-21swapper/322:55:353
10752642122,6sleep30-21swapper/322:41:313
10661802122,6sleep30-21swapper/322:35:253
10612192122,6sleep30-21swapper/322:30:243
10598892122,6sleep30-21swapper/322:25:393
10391832122,6sleep30-21swapper/322:05:313
10351032122,6sleep30-21swapper/322:00:343
10141812122,6sleep30-21swapper/321:40:323
9964732112,5sleep30-21swapper/321:25:233
9921372112,5sleep30-21swapper/321:20:293
9890582112,5sleep30-21swapper/321:15:313
9677012112,5sleep30-21swapper/320:55:293
9677012112,5sleep30-21swapper/320:55:293
9622512112,5sleep30-21swapper/320:50:273
9622512112,5sleep30-21swapper/320:50:263
9567042112,5sleep30-21swapper/320:45:023
9468002112,5sleep30-21swapper/320:35:173
9458952112,5sleep30-21swapper/320:30:413
8925482112,5sleep30-21swapper/319:40:283
8824302112,5sleep30-21swapper/319:30:243
11851592112,5sleep30-21swapper/300:35:243
11844142112,6sleep30-21swapper/300:32:243
11654552112,5sleep30-21swapper/300:15:273
11654552112,5sleep30-21swapper/300:15:273
11500642112,5sleep30-21swapper/300:00:013
11479972112,6sleep30-21swapper/323:55:323
11356882112,5sleep30-21swapper/323:45:243
11104142112,6sleep30-21swapper/323:20:173
11008642112,5sleep30-21swapper/323:10:243
10800972112,5sleep30-21swapper/322:45:413
10521272112,5sleep30-21swapper/322:20:283
10214212112,5sleep30-21swapper/321:50:223
10165252112,5sleep30-21swapper/321:45:253
10013832102,5sleep30-21swapper/321:30:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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