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2026-05-11 - 18:46

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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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 Mon May 11, 2026 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29856422690,5sleep20-21swapper/209:41:012
2832965996661,4cyclictest2801538-21kworker/u8:0+flush-8:008:26:121
29486742630,3sleep375-21kworker/3:1-events09:01:093
2832965996357,5cyclictest2801538-21kworker/u8:0+flush-8:007:26:131
2832965996256,5cyclictest2919302-21kworker/u8:1+flush-8:008:56:071
2832965996154,4cyclictest2801538-21kworker/u8:0+events_unbound08:01:121
2832965996054,5cyclictest3023699-21kworker/u8:2+events_unbound10:20:551
2832965995954,3cyclictest2801538-21kworker/u8:0+events_unbound07:45:011
2832962995952,5cyclictest2801538-21kworker/u8:0+flush-8:007:56:120
2832969995854,3cyclictest2869907-21kworker/u8:2+flush-8:008:16:132
2832965995852,5cyclictest3038870-21kworker/u8:2+events_unbound10:36:091
2832965995752,4cyclictest2969277-21kworker/u8:2+events_unbound10:01:111
2832969995646,7cyclictest2869895-21cat07:45:002
2832965995650,5cyclictest2780954-21kworker/u8:3+events_unbound07:15:571
2832965995648,6cyclictest3008886-21kworker/u8:0+flush-8:010:16:071
2832965995646,8cyclictest2848798-21ntpq07:21:061
2832965995550,4cyclictest3033884-21kworker/u8:4+events_unbound10:55:561
2832965995549,5cyclictest3033884-21kworker/u8:4+flush-8:010:41:061
2832965995549,4cyclictest2919302-21kworker/u8:1+events_unbound09:25:561
2832965995548,6cyclictest2969277-21kworker/u8:2+events_unbound09:36:061
2832962995550,4cyclictest2919302-21kworker/u8:1+flush-8:008:56:090
2832965995450,3cyclictest3118090-21kworker/u8:0+events_unbound12:10:561
2832965995448,5cyclictest3033884-21kworker/u8:4+events_unbound11:01:071
2832965995448,5cyclictest2969277-21kworker/u8:2+events_unbound10:06:131
2832962995448,4cyclictest2969277-21kworker/u8:2+events_unbound09:51:100
2832962995448,4cyclictest2869907-21kworker/u8:2+flush-8:008:31:110
2832969995348,4cyclictest2919302-21kworker/u8:1+flush-8:009:21:112
2832969995347,4cyclictest2869907-21kworker/u8:2+events_unbound08:41:052
2832965995347,5cyclictest3112827-21kworker/u8:1+events_unbound11:51:091
2832965995347,5cyclictest3112827-21kworker/u8:1+events_unbound11:51:091
2832965995347,4cyclictest2969277-21kworker/u8:2+events_unbound09:51:121
2832962995345,6cyclictest280-21systemd-journal08:36:020
2832962995344,6cyclictest3042720-21ntpq10:36:070
2832965995247,4cyclictest2969277-21kworker/u8:2+events_unbound09:56:021
2832965995246,5cyclictest3073232-21kworker/u8:3+flush-8:011:16:081
2832965995246,5cyclictest3067756-21kworker/u8:0+events_unbound11:31:061
2832965995246,5cyclictest2954624-21kworker/u8:0+flush-8:009:11:061
2832965995246,4cyclictest3078496-21kworker/u8:2+events_unbound11:55:551
2832965995244,6cyclictest2837907-21latency_hist07:15:011
2832962995240,9cyclictest3088959-21diskstats11:25:570
2832965995138,4cyclictest2969277-21kworker/u8:2+events_unbound09:40:191
2832965995138,10cyclictest280-21systemd-journal08:51:061
2832969995044,4cyclictest2883923-21kworker/u8:3+events_unbound08:40:012
2832969995041,6cyclictest280-21systemd-journal11:35:002
2832969995039,8cyclictest3048961-21cat10:45:012
2832965995046,3cyclictest3078496-21kworker/u8:2+flush-8:011:26:101
2832965995045,4cyclictest2998689-21kworker/u8:1+events_unbound10:51:091
2832965995044,5cyclictest3078496-21kworker/u8:2+events_unbound12:21:081
2832965995044,4cyclictest3016432-21kworker/u8:3+flush-8:010:26:061
2832965995044,4cyclictest2801538-21kworker/u8:0+flush-8:008:21:071
2832965995043,5cyclictest2919302-21kworker/u8:1+events_unbound09:06:101
2832965995042,6cyclictest2869907-21kworker/u8:2+flush-8:008:11:081
2832965995042,6cyclictest2869907-21kworker/u8:2+flush-8:008:11:071
2832962995044,4cyclictest2801538-21kworker/u8:0+flush-8:007:16:100
2832962995041,6cyclictest2934923-21/usr/sbin/munin08:51:110
2832969994940,4cyclictest2929932-21kworker/u8:4+flush-8:008:51:092
2832965994944,4cyclictest2919302-21kworker/u8:1+flush-8:009:31:011
2832965994941,6cyclictest280-21systemd-journal08:37:191
2832962994942,5cyclictest280-21systemd-journal09:06:150
2832969994843,4cyclictest3128253-21kworker/u8:3+events_unbound12:11:152
2832965994844,3cyclictest2998689-21kworker/u8:1+flush-8:010:11:021
2832965994844,3cyclictest2929932-21kworker/u8:4+flush-8:008:46:121
2832965994842,5cyclictest3073232-21kworker/u8:3+events_unbound11:10:571
2832965994842,5cyclictest2869907-21kworker/u8:2+flush-8:007:51:081
2832965994842,4cyclictest3033884-21kworker/u8:4+events_unbound10:31:101
2832965994841,6cyclictest3112827-21kworker/u8:1+events_unbound12:00:571
2832965994741,4cyclictest2801538-21kworker/u8:0+events_unbound07:36:141
2832962994743,3cyclictest2801538-21kworker/u8:0+events_unbound07:50:010
2832965994640,5cyclictest2919302-21kworker/u8:1+events_unbound09:01:091
2832962994642,3cyclictest3078496-21kworker/u8:2+events_unbound12:01:110
2832965994539,4cyclictest2869907-21kworker/u8:2+events_unbound08:41:001
2832965994538,5cyclictest2869907-21kworker/u8:2+flush-8:007:56:001
2832962994540,4cyclictest3142448-21kworker/u8:1+events_unbound12:16:150
2832962994540,3cyclictest3073232-21kworker/u8:3+events_unbound11:15:560
2832962994537,6cyclictest3078496-21kworker/u8:2+flush-8:011:35:570
283296299451,42cyclictest1-21systemd10:00:000
2832969994440,3cyclictest3016432-21kworker/u8:3+events_unbound10:11:142
2832965994438,5cyclictest2869907-21kworker/u8:2+flush-8:007:46:091
2832965994436,6cyclictest3078496-21kworker/u8:2+events_unbound11:40:541
2832962994437,5cyclictest3083749-21/usr/sbin/munin11:21:060
2832965994340,2cyclictest2869907-21kworker/u8:2+events_unbound08:16:081
2832965994338,3cyclictest3078496-21kworker/u8:2+events_unbound11:21:021
2832969994238,3cyclictest2801538-21kworker/u8:0+events_unbound07:16:092
2832962994238,2cyclictest2832833-21kworker/u8:1+flush-8:007:41:070
2832962994235,5cyclictest280-21systemd-journal10:31:260
2832969994135,4cyclictest2978648-21kworker/u8:3+events_unbound09:31:182
2832969994134,5cyclictest2801538-21kworker/u8:0+events_unbound07:35:042
2832965994135,4cyclictest2919302-21kworker/u8:1+flush-8:009:16:141
2832962994136,4cyclictest2869907-21kworker/u8:2+events_unbound08:40:550
2832969994036,3cyclictest2801538-21kworker/u8:0+events_unbound07:35:012
2832965994034,4cyclictest2954624-21kworker/u8:0+flush-8:009:45:571
2832965994034,4cyclictest2801538-21kworker/u8:0+events_unbound07:31:001
2832962994029,8cyclictest3163080-21latency_hist12:40:010
2832965993934,4cyclictest3078496-21kworker/u8:2+flush-8:012:06:131
2832965993934,4cyclictest3078496-21kworker/u8:2+events_unbound12:30:561
2832965993930,7cyclictest3143064-21latency_hist12:20:011
2832965993928,8cyclictest2968350-21ntpq09:21:051
2832962993935,2cyclictest2978648-21kworker/u8:3+flush-8:009:41:020
2832962993928,9cyclictest280-21systemd-journal08:24:590
2832962993829,6cyclictest3123031-21latency_hist12:00:010
2832969993729,6cyclictest280-21systemd-journal10:40:002
2832969993727,8cyclictest280-21systemd-journal12:08:182
2832965993732,4cyclictest3142448-21kworker/u8:1+flush-8:012:26:081
2832962993733,3cyclictest3078496-21kworker/u8:2+flush-8:012:21:120
283278123726,8sleep20-21swapper/207:09:502
29019402360,6sleep3451irq_work/308:16:033
2832965993632,3cyclictest3038870-21kworker/u8:2+events_unbound10:46:091
2832965993631,4cyclictest3078496-21kworker/u8:2+flush-8:012:36:041
2832965993631,4cyclictest3067756-21kworker/u8:0+events_unbound11:36:021
2832965993628,6cyclictest2890101-21apt-get08:05:521
2832962993632,3cyclictest2969277-21kworker/u8:2+events_unbound09:36:120
2832962993624,9cyclictest3152978-21latency_hist12:30:010
2832965993531,3cyclictest3067756-21kworker/u8:0+flush-8:011:46:191
2832965993531,3cyclictest2998689-21kworker/u8:1+flush-8:011:06:111
2832965993530,4cyclictest2801538-21kworker/u8:0+events_unbound08:31:031
2832962993531,3cyclictest3078496-21kworker/u8:2+events_unbound11:41:120
2832962993530,4cyclictest3038870-21kworker/u8:2+flush-8:010:46:080
2832962993528,5cyclictest280-21systemd-journal09:16:160
2832969993425,7cyclictest280-21systemd-journal10:29:182
2832969993424,8cyclictest280-21systemd-journal11:10:002
2832962993429,4cyclictest3016432-21kworker/u8:3+flush-8:010:21:100
2832962993427,5cyclictest3016432-21kworker/u8:3+events_unbound10:26:090
2832962993427,5cyclictest3008886-21kworker/u8:0+events_unbound10:16:060
283296299341,31cyclictest1-21systemd07:31:180
2832969993329,3cyclictest2954624-21kworker/u8:0+flush-8:009:26:182
2832969993328,3cyclictest2998689-21kworker/u8:1+events_unbound10:30:012
2832969993328,3cyclictest2929399-21kworker/u8:0+flush-8:008:55:262
2832962993329,3cyclictest2954624-21kworker/u8:0+events_unbound09:26:100
2832962993325,6cyclictest280-21systemd-journal09:03:180
28325292333,9sleep10-21swapper/107:06:301
2832969993227,3cyclictest2998689-21kworker/u8:1+flush-8:010:05:052
2832969993227,3cyclictest2879245-21unixbench_multi07:51:132
2832969993224,6cyclictest280-21systemd-journal11:05:002
2832962993227,3cyclictest2869907-21kworker/u8:2+flush-8:007:51:010
2832962993226,5cyclictest2801538-21kworker/u8:0+events_unbound08:06:050
2832962993226,4cyclictest3078496-21kworker/u8:2+events_unbound12:11:030
2832962993222,8cyclictest3113676-21diskstats11:50:560
2832962993222,8cyclictest3113676-21diskstats11:50:550
2832969993125,4cyclictest3078496-21kworker/u8:2+events_unbound12:25:032
2832969993120,8cyclictest280-21systemd-journal10:59:592
2832962993126,4cyclictest3067756-21kworker/u8:0+events_unbound11:31:120
2832962993126,3cyclictest2919302-21kworker/u8:1+flush-8:009:11:000
2832962993126,3cyclictest2919302-21kworker/u8:1+events_unbound08:46:000
2832962993124,5cyclictest280-21systemd-journal12:31:590
2832969993026,3cyclictest2869907-21kworker/u8:2+events_unbound08:34:272
2832969993025,3cyclictest3103672-21aten2_r5power_v11:40:562
2832969993020,8cyclictest280-21systemd-journal12:25:012
2832962993027,1cyclictest2869907-21kworker/u8:2+events_unbound08:10:580
2832962993027,1cyclictest2869907-21kworker/u8:2+events_unbound08:10:580
2832962993026,3cyclictest2954624-21kworker/u8:0+events_unbound09:45:560
2832962993025,4cyclictest2998689-21kworker/u8:1+flush-8:010:08:240
2832962993025,4cyclictest2801538-21kworker/u8:0+flush-8:007:36:100
2832962993025,4cyclictest2801538-21kworker/u8:0+events_unbound07:21:090
2832969992924,3cyclictest2999383-21aten2_r5power_v09:55:572
2832969992923,4cyclictest3157810-21unixbench_singl12:31:142
2832962992925,3cyclictest2998689-21kworker/u8:1+flush-8:010:51:020
2832962992924,4cyclictest2998689-21kworker/u8:1+events_unbound11:05:570
2832962992924,3cyclictest3073232-21kworker/u8:3+flush-8:011:11:020
2832962992923,4cyclictest2969251-21ls09:25:000
2832962992919,7cyclictest2889178-21python308:01:120
2832969992824,2cyclictest3143068-21munin-run12:20:012
2832962992824,3cyclictest3016432-21kworker/u8:3+events_unbound10:11:120
2832962992823,4cyclictest3078496-21kworker/u8:2+flush-8:012:06:010
29759332270,2sleep375-21kworker/3:1+events09:31:033
2832969992722,4cyclictest2998689-21kworker/u8:1+events_unbound09:51:522
2832962992723,3cyclictest3078496-21kworker/u8:2+events_unbound11:46:130
2832962992723,3cyclictest3067756-21kworker/u8:0+flush-8:011:01:130
2832962992722,3cyclictest2801538-21kworker/u8:0+flush-8:008:26:060
2832962992721,4cyclictest2780954-21kworker/u8:3+events_unbound07:25:570
2832969992622,2cyclictest0-21swapper/209:19:592
2832969992617,7cyclictest2884805-21cp08:00:012
2832969992617,7cyclictest280-21systemd-journal11:22:182
2832962992622,3cyclictest2780954-21kworker/u8:3+events_unbound07:14:000
2832969992521,2cyclictest2854589-21cron07:29:592
2832969992516,7cyclictest280-21systemd-journal10:18:182
2832962992520,4cyclictest3033884-21kworker/u8:4+flush-8:010:41:030
2832962992520,4cyclictest3033884-21kworker/u8:4+events_unbound10:56:100
2832962992514,8cyclictest280-21systemd-journal08:20:000
2832969992420,2cyclictest3158712-21cpuspeed_turbos12:35:572
2832969992418,4cyclictest2978648-21kworker/u8:3+events_unbound09:35:082
2832969992418,4cyclictest2801538-21kworker/u8:0-ext4-rsv-conversion08:25:002
2832969992414,8cyclictest280-21systemd-journal11:49:592
2832969992315,5cyclictest280-21systemd-journal07:25:002
283296999230,8cyclictest3123491-21grep12:00:562
2832962992318,3cyclictest2969277-21kworker/u8:2+events_unbound10:00:560
2832969992219,2cyclictest2934247-21unixbench_multi08:46:142
2832969992218,2cyclictest2909952-21aten2_r5power_v08:25:542
2832969992217,4cyclictest3023699-21kworker/u8:2+events_unbound10:20:122
2832969992217,4cyclictest2869907-21kworker/u8:2+events_unbound07:45:212
283296299225,16cyclictest2786107-21kworker/0:2+events09:30:570
2832969992117,3cyclictest3078496-21kworker/u8:2+events_unbound11:35:062
2832969992117,3cyclictest3004466-21cpuspeed_turbos10:00:562
2832969992117,2cyclictest3088927-21cpuspeed_turbos11:25:562
2832969992116,4cyclictest3112827-21kworker/u8:1+events_unbound11:52:252
2832969992116,4cyclictest3112827-21kworker/u8:1+events_unbound11:52:252
2832969992116,3cyclictest0-21swapper/210:51:132
2832969992014,4cyclictest2837529-21unixbench_multi07:11:142
2832969992011,7cyclictest3081746-21tr11:16:042
2832969992010,2cyclictest0-21swapper/209:01:002
283296999200,9cyclictest2950416-21irqcore09:06:012
283296999200,6cyclictest2955878-21cut09:11:012
283296999200,5cyclictest2889810-21munin-run08:05:002
283296999199,8cyclictest2991358-21tr09:46:032
283296999194,2cyclictest161rcu_preempt11:11:072
28327322192,11sleep00-21swapper/007:09:110
28340792189,5sleep30-21swapper/307:11:023
2832969991814,2cyclictest0-21swapper/210:46:002
2832969991814,2cyclictest0-21swapper/208:10:002
28325982183,8sleep30-21swapper/307:07:263
2832969991712,3cyclictest3118736-21fschecks_time11:55:562
2832969991611,3cyclictest0-21swapper/208:11:002
2832969991611,3cyclictest0-21swapper/208:10:592
30627382143,8sleep30-21swapper/310:56:073
31431002132,6sleep30-21swapper/312:20:023
31373642132,7sleep30-21swapper/312:11:113
30935542132,6sleep30-21swapper/311:30:013
30686272133,6sleep30-21swapper/311:05:023
30436552132,6sleep30-21swapper/310:40:013
30351582132,7sleep30-21swapper/310:31:033
30289902132,7sleep30-21swapper/310:25:533
29336072132,7sleep30-21swapper/308:46:043
29285902132,6sleep30-21swapper/308:41:043
28448652132,6sleep30-21swapper/307:20:023
31487502122,6sleep30-21swapper/312:26:003
31283892122,6sleep30-21swapper/312:05:573
31183892122,6sleep30-21swapper/311:55:543
31162382122,6sleep30-21swapper/311:51:053
31162382122,6sleep30-21swapper/311:51:053
31032562122,5sleep30-21swapper/311:40:013
31025692122,6sleep30-21swapper/311:36:123
30919612123,5sleep30-21swapper/311:26:053
30738382122,6sleep30-21swapper/311:10:563
30530982122,6sleep30-21swapper/310:46:123
30082562122,6sleep30-21swapper/310:01:133
29980932122,6sleep30-21swapper/309:51:053
29844432122,6sleep30-21swapper/309:40:553
29791152122,5sleep30-21swapper/309:35:003
29693552122,6sleep30-21swapper/309:25:023
29194222122,5sleep30-21swapper/308:35:023
29152352121,7sleep30-21swapper/308:31:003
28941192120,8sleep30-21swapper/308:06:133
28855192122,6sleep30-21swapper/308:00:583
28805102122,6sleep30-21swapper/307:56:013
28773712122,6sleep30-21swapper/307:51:043
28699062122,6sleep30-21swapper/307:45:053
28602272122,6sleep30-21swapper/307:35:593
28546132122,5sleep30-21swapper/307:30:013
28538442122,6sleep30-21swapper/307:26:123
28385062122,6sleep30-21swapper/307:15:043
31590412112,5sleep30-21swapper/312:36:033
31537632112,5sleep30-21swapper/312:30:563
31385472112,5sleep30-21swapper/312:15:563
31233692112,5sleep30-21swapper/312:00:553
31088622112,5sleep30-21swapper/311:45:593
30874282110,7sleep30-21swapper/311:21:073
30824072112,5sleep30-21swapper/311:16:053
30643432112,6sleep30-21swapper/311:01:013
30546102112,5sleep30-21swapper/310:51:013
30388752113,5sleep30-21swapper/310:35:363
30245742112,6sleep30-21swapper/310:21:003
30190502112,5sleep30-21swapper/310:15:543
30145812112,6sleep30-21swapper/310:11:013
30094812112,5sleep30-21swapper/310:05:583
29996162112,6sleep30-21swapper/309:56:003
29898542112,6sleep30-21swapper/309:46:013
29645932112,6sleep30-21swapper/309:20:453
29635262112,5sleep30-21swapper/309:16:113
29546652112,5sleep30-21swapper/309:10:533
29502132112,5sleep30-21swapper/309:06:003
29398262112,5sleep30-21swapper/308:55:283
29353222112,5sleep30-21swapper/308:50:593
29098432112,5sleep30-21swapper/308:25:553
29046132112,5sleep30-21swapper/308:20:013
28959252112,5sleep30-21swapper/308:11:023
28959252112,5sleep30-21swapper/308:11:023
28655332112,5sleep30-21swapper/307:41:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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