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2026-09-08 - 22:21

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 08, 2026 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39808682680,1chrt3980518-21kthreadcore11:14:150
39277672600,3chrt75-21kworker/3:1+events10:19:293
3737004995749,6cyclictest3749030-21kworker/u8:2+events_unbound07:29:251
3736999995738,16cyclictest278-21systemd-journal11:04:100
3736999995445,6cyclictest4047083-21latency_hist12:20:000
3736999995433,18cyclictest3813592-21latency_hist08:25:000
3737004994941,6cyclictest3996048-21kworker/u8:3+flush-8:011:49:251
3737009994840,6cyclictest3818644-21cp08:30:002
3737009994840,6cyclictest3818644-21cp08:30:002
3737004994842,4cyclictest4007510-21kworker/u8:1+events_unbound12:04:091
3736999994840,6cyclictest3997573-21latency_hist11:30:000
3737004994741,5cyclictest3828926-21kworker/u8:0+flush-8:010:24:151
3737004994741,5cyclictest3828926-21kworker/u8:0+flush-8:010:24:151
3736999994725,19cyclictest278-21systemd-journal10:55:020
3736999994617,7cyclictest3928654-21sshd10:24:100
3736999994617,7cyclictest3928654-21sshd10:24:100
3736999994523,18cyclictest278-21systemd-journal10:04:090
3737004994338,4cyclictest3942732-21kworker/u8:1+flush-8:011:04:081
3737004994336,5cyclictest3844020-21kworker/u8:1+flush-8:009:15:001
3736999994326,15cyclictest390-21dbus-daemon09:05:000
3737004994236,5cyclictest3888331-21kworker/u8:2+flush-8:010:15:001
3737004994235,5cyclictest278-21systemd-journal11:19:101
3736999994218,21cyclictest0-21swapper/009:45:010
3737004994134,5cyclictest3978050-21kworker/u8:1+events_unbound11:29:131
3737004994130,9cyclictest3838593-21apt-get08:50:011
3737004994035,4cyclictest3873641-21kworker/u8:3+events_unbound10:39:121
3736999994031,6cyclictest4057021-21latency_hist12:30:010
3736999994022,15cyclictest278-21systemd-journal10:14:100
3736999994021,18cyclictest4002438-21unixbench_multi11:34:240
3736999994021,16cyclictest0-21swapper/007:30:000
3736999994018,7cyclictest4027835-21/usr/sbin/munin12:04:170
3736999994018,6cyclictest3854460-21diskstats09:09:090
3737009993924,2cyclictest4018304-21fschecks_time11:54:112
3737004993935,3cyclictest3873641-21kworker/u8:3+flush-8:010:49:131
3737004993934,4cyclictest3873641-21kworker/u8:3+flush-8:010:29:181
3737004993934,4cyclictest3732155-21kworker/u8:1+events_unbound07:49:111
3736999993932,5cyclictest278-21systemd-journal07:44:100
3736999993931,6cyclictest3973420-21apt-get11:09:070
3736999993920,16cyclictest3917877-21grep10:09:240
3737009993831,5cyclictest3962505-21apt-get10:55:002
3737009993827,8cyclictest3972904-21cat11:05:012
3737004993833,4cyclictest3873641-21kworker/u8:3+flush-8:010:34:231
3737004993832,4cyclictest4032497-21kworker/u8:0+events_unbound12:19:181
3737004993831,4cyclictest3802240-21kworker/u8:3+flush-8:008:19:231
3737004993830,6cyclictest3802240-21kworker/u8:3+flush-8:008:29:111
3737004993830,6cyclictest3802240-21kworker/u8:3+flush-8:008:29:111
3736999993822,14cyclictest4012334-21unixbench_multi11:44:260
3736999993819,2cyclictest0-21swapper/011:19:220
3736999993817,18cyclictest0-21swapper/012:09:200
3737004993732,4cyclictest3996048-21kworker/u8:3+events_unbound11:39:121
3737004993732,4cyclictest3749030-21kworker/u8:2+flush-8:007:44:081
3737004993732,3cyclictest3844020-21kworker/u8:1+events_unbound09:09:171
3737004993731,5cyclictest3873641-21kworker/u8:3+flush-8:009:54:261
3737004993731,4cyclictest3888331-21kworker/u8:2+events_unbound09:44:101
3737004993730,5cyclictest3732155-21kworker/u8:1+flush-8:007:59:191
3737004993728,7cyclictest3839361-21/usr/sbin/munin08:54:241
3736999993719,15cyclictest3884215-21fschecks_count09:39:110
3736999993719,15cyclictest0-21swapper/012:34:100
3737004993632,3cyclictest3828926-21kworker/u8:0+flush-8:010:09:121
3737004993631,4cyclictest3828926-21kworker/u8:0+events_unbound09:19:241
3737004993629,5cyclictest3828926-21kworker/u8:0+flush-8:008:44:231
3736999993619,3cyclictest3927904-21systemd-run10:20:000
3736999993619,15cyclictest0-21swapper/008:10:000
3736999993618,2cyclictest0-21swapper/009:54:280
3736999993615,4cyclictest1-21systemd09:34:100
3737004993531,2cyclictest3798665-21wc08:10:001
3737004993525,8cyclictest278-21systemd-journal09:47:101
3736999993518,2cyclictest0-21swapper/007:55:010
3736999993518,15cyclictest3808654-21systemd-run08:20:000
3736999993516,17cyclictest3736995-21cyclictest07:10:010
3736999993516,17cyclictest0-21swapper/011:39:100
38188822340,4sleep375-21kworker/3:1-events08:30:003
38188822340,4sleep375-21kworker/3:1-events08:30:003
3737004993428,4cyclictest3956984-21kworker/u8:0+events_unbound10:54:091
3737004993427,5cyclictest3749030-21kworker/u8:2+flush-8:007:54:131
3737004993426,6cyclictest278-21systemd-journal12:00:001
3736999993417,4cyclictest3753557-21unixbench_multi07:24:260
3736999993416,3cyclictest4042136-21awk12:15:000
3736999993416,2cyclictest0-21swapper/012:24:090
3736999993416,16cyclictest0-21swapper/011:49:250
3736999993415,3cyclictest0-21swapper/007:40:010
3736999993415,2cyclictest0-21swapper/007:34:170
3736999993413,3cyclictest0-21swapper/009:24:140
3736999993412,5cyclictest0-21swapper/007:15:010
3736999993317,4cyclictest3844548-21cpuspeed_turbos08:59:080
3736999993312,7cyclictest3957017-21ntpq10:49:220
3737004993228,3cyclictest4032497-21kworker/u8:0+events_unbound12:29:061
3736999993221,9cyclictest3803052-21ntpq08:14:190
3736999993214,4cyclictest390-21dbus-daemon08:55:010
3737004993126,4cyclictest3972260-21kworker/u8:3+flush-8:011:09:131
3737004993126,4cyclictest3732155-21kworker/u8:1+flush-8:007:14:211
3737004993125,4cyclictest4062537-21apt-get12:39:051
3737004993125,4cyclictest4051994-21kworker/u8:3+events_unbound12:34:121
3737004993124,5cyclictest3828926-21kworker/u8:0+flush-8:009:39:251
3737004993123,6cyclictest3988269-21apt-get11:24:051
3737004993122,7cyclictest3952603-21latency_hist10:45:011
3736999993126,3cyclictest4066902-21cron12:40:000
3736999993126,3cyclictest3823083-21needreboot08:34:180
39421082300,6chrt451irq_work/310:34:183
3737009993025,3cyclictest3982591-21unixbench_multi11:14:252
3737004993026,3cyclictest3888331-21kworker/u8:2+events_unbound11:35:011
3737004993026,3cyclictest3749030-21kworker/u8:2+events_unbound08:14:091
3737004993023,5cyclictest3844020-21kworker/u8:1+flush-8:009:24:221
3736999993024,4cyclictest3958633-21irqcore10:54:120
3737009992925,3cyclictest390-21dbus-daemon11:40:002
3737009992925,2cyclictest3754349-21aten2_r5power_p07:29:092
3737009992921,6cyclictest3838593-21apt-get08:50:012
3737004992925,3cyclictest3828926-21kworker/u8:0+events_unbound09:29:081
3737004992924,3cyclictest3737160-21kworker/u8:0+events_unbound07:19:261
3737004992923,5cyclictest3749030-21kworker/u8:2+flush-8:008:34:121
3737004992922,5cyclictest3873641-21kworker/u8:3+events_unbound09:59:091
3736999992924,3cyclictest3788556-21cron08:00:000
3737004992824,2cyclictest3978641-21cut11:14:091
3737004992823,4cyclictest3888331-21kworker/u8:2+flush-8:011:44:161
3736999992823,3cyclictest3774412-21fschecks_time07:49:100
3736999992818,8cyclictest4018202-21diskstats11:54:100
3737009992724,2cyclictest3744407-21aten2_r5power_e07:19:072
3737009992723,3cyclictest3963327-21aten2_r5power_c10:59:082
3737009992716,8cyclictest3798554-21cp08:10:002
3737004992723,3cyclictest3888331-21kworker/u8:2+flush-8:010:04:151
3737004992721,4cyclictest3802240-21kworker/u8:3+flush-8:008:24:241
3736999992723,3cyclictest3838590-21idleruntime-cro08:50:000
3737009992623,2cyclictest3888965-21aten2_r5power_p09:44:092
3737009992622,2cyclictest3908746-21aten2_r5power_p10:04:082
3737009992622,2cyclictest3779142-21aten2_r5power_v07:54:082
3737009992621,3cyclictest4062755-21cpuspeed_turbos12:39:082
3737004992622,3cyclictest3923556-21aten2_r5power_e10:19:121
3737004992622,2cyclictest0-21swapper/112:09:091
3737004992621,4cyclictest3732155-21kworker/u8:1+flush-8:008:04:251
3736999992620,4cyclictest3818783-21apt-key08:30:010
3736999992620,4cyclictest3818783-21apt-key08:30:000
3737009992522,2cyclictest4037081-21unixbench_singl12:09:252
3737009992521,2cyclictest3874201-21cpuspeed_turbos09:29:092
3737004992521,3cyclictest3828926-21kworker/u8:0+flush-8:008:59:131
3737004992521,3cyclictest3689477-21kworker/u8:3+flush-8:007:24:171
3737004992520,4cyclictest4032497-21kworker/u8:0+events_unbound12:24:171
3737004992520,4cyclictest4032497-21kworker/u8:0+events_unbound12:14:181
3737004992520,4cyclictest3996048-21kworker/u8:3+flush-8:011:54:261
3736999992520,3cyclictest3903728-21apt-get09:59:060
3736999992520,3cyclictest0-21swapper/009:50:000
3736999992519,4cyclictest3942565-21unixbench_multi10:34:240
3736999992518,5cyclictest3873641-21kworker/u8:3+flush-8:010:25:320
3737009992420,3cyclictest4027975-21aten2_r5power_v12:04:082
3737009992420,2cyclictest3879253-21fschecks_time09:34:102
3737009992420,2cyclictest3737548-21aten2_r5power_p07:14:072
3737009992418,4cyclictest3917879-21unixbench_singl10:09:242
3737004992420,3cyclictest3844020-21kworker/u8:1+events_unbound09:34:101
3737004992420,2cyclictest3768559-21cron07:40:001
3737004992420,2cyclictest0-21swapper/108:40:001
3737004992419,4cyclictest3888331-21kworker/u8:2+flush-8:010:59:111
3737004992419,3cyclictest3851435-21kthreadcore09:04:121
3736999992419,3cyclictest3878281-21unixbench_singl09:29:290
3736999992418,4cyclictest3864404-21fschecks_time09:19:100
3736999992415,6cyclictest3793554-21latency_hist08:05:010
392752322319,2sleep23927765-21unixbench_singl10:19:292
3737009992320,2cyclictest3943342-21aten2_r5power_e10:39:102
3737004992317,4cyclictest3732155-21kworker/u8:1+flush-8:007:34:141
3736999992318,3cyclictest3952593-21cron10:45:010
3736999992313,8cyclictest3988519-21diskstats11:24:090
37321522239,9sleep10-21swapper/107:05:131
3737009992219,2cyclictest3762873-21tail07:34:172
3737009992218,2cyclictest3988328-21aten2_r5power_e11:24:072
3737009992216,4cyclictest3956770-21missed_timers10:49:182
3737009992212,8cyclictest3828688-21awk08:40:002
373699999227,14cyclictest3798588-21kworker/0:2+events09:14:370
3736999992218,2cyclictest0-21swapper/007:15:050
37322662229,9sleep20-21swapper/207:06:432
3737009992117,2cyclictest3973508-21aten2_r5power_p11:09:102
3737009992117,2cyclictest3799473-21cpuspeed_turbos08:14:082
3737009992117,2cyclictest0-21swapper/211:49:072
3737009992116,4cyclictest3873641-21kworker/u8:3+flush-8:009:59:122
3737009992116,3cyclictest3773527-21sh07:45:002
3737009992116,2cyclictest0-21swapper/208:19:172
3737009992113,6cyclictest3930607-21kthreadcore10:24:172
3737009992113,6cyclictest3930607-21kthreadcore10:24:172
3737009992111,8cyclictest4060262-21tr12:34:162
373700999210,19cyclictest3950443-21cut10:44:172
3736999992117,2cyclictest0-21swapper/010:39:270
3736999992116,3cyclictest4023749-21irqrtprio11:59:120
3736999992116,3cyclictest0-21swapper/008:44:160
37323842217,8sleep30-21swapper/307:08:143
3737009992017,2cyclictest3809225-21aten2_r5power_c08:24:072
3737009992012,6cyclictest3842916-21/usr/sbin/munin08:54:172
3736999992016,3cyclictest3825903-21kthreadcore08:39:120
373700999192,12cyclictest3998141-21apt-get11:34:062
3737009991915,2cyclictest0-21swapper/210:34:182
3737009991913,4cyclictest0-21swapper/208:30:012
373700999190,16cyclictest3922912-21cron10:15:002
373700999185,9cyclictest3784194-21apt-get07:59:052
3737009991814,3cyclictest3864355-21fschecks_count09:19:092
3737009991814,3cyclictest3764481-21fschecks_time07:39:142
3737009991814,2cyclictest4047923-21fschecks_count12:24:092
3737009991814,2cyclictest0-21swapper/212:29:182
3737009991814,2cyclictest0-21swapper/209:24:182
3737009991813,3cyclictest3933438-21aten2_r5power_e10:29:062
3737009991813,3cyclictest3853655-21latency_hist09:05:002
3737009991813,3cyclictest3848686-21sh09:00:002
3737009991812,4cyclictest4012481-21sh11:45:002
373700999178,6cyclictest3833667-21cron08:45:002
373700999177,7cyclictest4042272-21sed12:15:002
3737009991713,3cyclictest3859266-21aten2_r5power_v09:14:092
3737009991713,3cyclictest0-21swapper/211:29:242
3737009991713,2cyclictest3774318-21cpuspeed_turbos07:49:092
3737009991713,2cyclictest0-21swapper/209:09:232
3737009991712,3cyclictest3789240-21aten2_r5power_p08:04:092
3737009991712,3cyclictest0-21swapper/212:19:152
373700999171,12cyclictest4026341-21kthreadcore11:59:152
373700999168,6cyclictest3893528-21sshd09:45:092
373700999162,13cyclictest0-21swapper/207:23:462
3737009991613,2cyclictest0-21swapper/209:35:532
3737009991612,2cyclictest0-21swapper/211:19:212
3737009991512,2cyclictest0-21swapper/209:52:562
38591262142,8sleep30-21swapper/309:14:073
37800852142,7sleep30-21swapper/307:54:153
40421552132,6sleep30-21swapper/312:15:013
40315242134,5sleep30-21swapper/312:04:183
40033812132,7sleep30-21swapper/311:39:113
39778122132,6sleep30-21swapper/311:10:013
39737922132,7sleep30-21swapper/311:09:133
39616032133,6sleep30-21swapper/310:54:173
37714222132,6sleep30-21swapper/307:44:163
37591712132,7sleep30-21swapper/307:34:043
37425372132,7sleep30-21swapper/307:15:033
40629962122,6sleep30-21swapper/312:39:123
40589532122,6sleep30-21swapper/312:34:153
40382182122,6sleep30-21swapper/312:14:133
40331842122,6sleep30-21swapper/312:09:113
40233982123,6sleep30-21swapper/311:59:123
40173992122,6sleep30-21swapper/311:50:023
40163772122,6sleep30-21swapper/311:49:173
40020132122,6sleep30-21swapper/311:34:213
39936112122,6sleep30-21swapper/311:29:113
39869062122,6sleep30-21swapper/311:19:163
39438082122,6sleep30-21swapper/310:39:163
39176252122,6sleep30-21swapper/310:09:233
38987442122,6sleep30-21swapper/309:54:073
38978452122,6sleep30-21swapper/309:49:253
38418192122,5sleep30-21swapper/308:54:173
38341422122,6sleep30-21swapper/308:48:113
38036592122,6sleep30-21swapper/308:15:013
37944832122,6sleep30-21swapper/308:09:113
37636062122,6sleep30-21swapper/307:35:023
37550532122,6sleep30-21swapper/307:29:153
40524322112,6sleep30-21swapper/312:27:163
40477372112,5sleep30-21swapper/312:24:083
40077832112,6sleep30-21swapper/311:40:553
39880302112,6sleep30-21swapper/311:21:223
39679402112,6sleep30-21swapper/311:00:263
39629842112,6sleep30-21swapper/310:55:253
39529752112,6sleep30-21swapper/310:46:583
39479432112,6sleep30-21swapper/310:40:243
39371212112,5sleep30-21swapper/310:29:173
39212572112,6sleep30-21swapper/310:14:173
39083732112,6sleep30-21swapper/310:00:453
39034092112,6sleep30-21swapper/309:55:193
38886182112,6sleep30-21swapper/309:41:073
38836532112,6sleep30-21swapper/309:36:013
38821912112,6sleep30-21swapper/309:34:173
38737852112,6sleep30-21swapper/309:26:583
38687292113,5sleep30-21swapper/309:20:253
38637742113,5sleep30-21swapper/309:15:233
38540592112,6sleep30-21swapper/309:07:293
38489922112,6sleep30-21swapper/309:00:473
38440212112,6sleep30-21swapper/308:55:333
38291142112,6sleep30-21swapper/308:42:333
38240402112,6sleep30-21swapper/308:35:433
38188822112,5sleep30-21swapper/308:30:013
38088642112,5sleep30-21swapper/308:20:103
37992272112,6sleep30-21swapper/308:14:053
37888862112,6sleep30-21swapper/308:01:013
37838942113,5sleep30-21swapper/307:55:313
37739572112,6sleep30-21swapper/307:47:413
37490142112,6sleep30-21swapper/307:20:253
37368702112,5sleep30-21swapper/307:10:013
39281262102,5sleep30-21swapper/310:20:183
39281262102,5sleep30-21swapper/310:20:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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