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2026-08-07 - 05:47

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 100 highest latencies:
System rack5slot4s.osadl.org (updated Fri Aug 07, 2026 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
368361521720,2sleep3575-21kworker/3:2+events22:07:573
364749821200,6chrt0-21swapper/221:32:572
36416892830,3chrt0-21swapper/221:28:002
3504195994740,5cyclictest3645269-21latency_hist21:30:011
3504197994626,18cyclictest3561020-21munin-run20:05:002
3504190994436,6cyclictest3515919-21latency_hist19:20:000
3504190994436,6cyclictest3515919-21latency_hist19:20:000
3504190994233,6cyclictest3531161-21base6419:35:010
3504195994031,6cyclictest3625481-21latency_hist21:10:011
3504197993925,12cyclictest3770212-21aten2_r5power_v23:37:482
3504197993924,13cyclictest3601557-21fschecks_time20:47:502
3504195993930,6cyclictest3814336-21latency_hist00:20:001
3504190993935,3cyclictest3526785-21kworker/u8:0+flush-8:019:57:520
3504190993934,3cyclictest3526785-21kworker/u8:0+flush-8:019:43:030
3504190993932,5cyclictest3526785-21kworker/u8:0+flush-8:019:52:510
3504190993931,6cyclictest3789810-21/usr/sbin/munin23:58:070
3504197993823,13cyclictest3775249-21cpuspeed_turbos23:42:492
3504195993828,2cyclictest161rcu_preempt23:07:541
3504190993832,4cyclictest3719981-21kworker/u8:1+flush-8:000:02:500
3504190993733,3cyclictest3601024-21kworker/u8:2+flush-8:021:27:560
3504190993733,2cyclictest3555838-21kworker/u8:2+flush-8:020:17:540
3504195993626,8cyclictest3565401-21ntpq20:08:011
3504190993630,4cyclictest3601024-21kworker/u8:2+flush-8:020:47:500
3504190993626,8cyclictest3585205-21ntpq20:28:000
3504197993518,15cyclictest0-21swapper/220:20:002
3504197993518,15cyclictest0-21swapper/219:40:002
3504190993531,3cyclictest3719957-21idleruntime-cro22:45:000
3504190993531,3cyclictest2686082-21kworker/u8:1+events_unbound19:48:230
3504190993529,4cyclictest3526785-21kworker/u8:0+flush-8:020:13:060
3504190993526,7cyclictest3645709-21/usr/sbin/munin21:33:000
3504190993525,8cyclictest3694220-21ntpq22:18:000
3504197993418,14cyclictest3710827-21fschecks_count22:37:512
3504195993429,3cyclictest3745968-21irqcore23:12:551
3504190993430,3cyclictest3814585-21kworker/u8:2+events_unbound00:22:580
350419799332,7cyclictest3808421-21ntpq00:13:002
350419799332,7cyclictest3808421-21ntpq00:13:002
3504197993319,12cyclictest3824799-21aten2_r5power_e00:32:502
3504195993328,3cyclictest3765434-21fschecks_time23:32:511
3504195993328,3cyclictest3755994-21irqrtprio23:22:581
3504195993316,3cyclictest0-21swapper/119:17:561
3504195993316,3cyclictest0-21swapper/119:17:561
3504190993325,6cyclictest3784438-21latency_hist23:50:010
3504190993325,5cyclictest3630417-21latency_hist21:15:010
350419799322,7cyclictest3814823-21apt-get00:22:492
3504197993227,3cyclictest3709830-21cron22:35:002
3504197993225,5cyclictest275-21systemd-journal21:55:002
3504197993216,14cyclictest3690630-21aten2_r5power_v22:17:492
350419799321,12cyclictest3550790-21apt-get19:55:032
3504195993228,2cyclictest3611141-21aten2_r5power_c20:57:461
3504195993222,7cyclictest275-21systemd-journal00:08:191
3504195993222,7cyclictest275-21systemd-journal00:08:191
3504190993228,3cyclictest3601024-21kworker/u8:2+flush-8:021:23:030
3504190993227,3cyclictest3699940-21kworker/u8:2+events_unbound22:35:000
3504190993227,3cyclictest3256672-21kworker/u8:4+events_unbound19:23:060
3504190993225,5cyclictest275-21systemd-journal19:29:470
350419799312,12cyclictest3829650-21apt-get00:37:502
3504197993118,11cyclictest3504797-21fschecks_count19:12:522
3504197993115,14cyclictest3665091-21idleruntime-cro21:50:002
3504197993115,14cyclictest3665091-21idleruntime-cro21:50:002
3504195993127,2cyclictest3650231-21systemd-run21:35:001
3504195993123,6cyclictest3700359-21/usr/sbin/munin22:28:001
3504195993118,9cyclictest275-21systemd-journal20:03:171
3504195993115,3cyclictest0-21swapper/122:33:061
3504190993126,4cyclictest3675464-21kworker/u8:0+events_unbound22:12:470
3504190993123,6cyclictest3744681-21latency_hist23:10:010
3504190993120,9cyclictest3755523-21diskstats23:22:530
350419799303,8cyclictest3725388-21apt-get22:52:492
350419799303,8cyclictest3621003-21apt-get21:07:482
350419799302,6cyclictest3580287-21ntpq20:23:012
3504197993012,2cyclictest0-21swapper/223:23:032
3504197993012,2cyclictest0-21swapper/219:47:462
350419799301,11cyclictest3590192-21ntpq20:33:012
350419799301,11cyclictest3590192-21ntpq20:33:012
350419599303,13cyclictest3790100-21fschecks_count23:57:521
3504195993014,9cyclictest0-21swapper/121:17:561
3504190993026,2cyclictest3615608-21unin-run21:00:010
3504190993025,4cyclictest3601024-21kworker/u8:2+flush-8:020:52:530
3504190993025,3cyclictest3808380-21needreboot00:13:000
3504190993025,3cyclictest3808380-21needreboot00:12:590
3504190993025,3cyclictest3560954-21idleruntime-cro20:05:000
3504190993025,3cyclictest3526785-21kworker/u8:0+flush-8:020:38:040
3504190993022,6cyclictest3788617-21ntpq23:52:590
3504190993022,6cyclictest3699940-21kworker/u8:2+flush-8:023:38:010
350339923019,6sleep30-21swapper/319:08:033
350419799293,5cyclictest3591308-21apt-get20:37:482
350419799292,6cyclictest3629756-21ntpq21:13:012
350419799292,6cyclictest3570405-21ntpq20:13:032
3504197992923,4cyclictest3794059-21unixbench_multi23:58:092
3504197992914,13cyclictest3740525-21fschecks_time23:07:512
3504197992911,2cyclictest0-21swapper/222:57:572
350419599296,8cyclictest30-21ksoftirqd/100:26:521
3504195992924,3cyclictest3716059-21irqcore22:42:541
3504195992918,7cyclictest275-21systemd-journal19:49:511
3504195992918,3cyclictest161rcu_preempt20:33:041
3504195992918,3cyclictest161rcu_preempt20:33:041
3504190992925,3cyclictest3590864-21kworker/u8:3+flush-8:021:02:480
3504190992924,3cyclictest3601024-21kworker/u8:2+events_unbound21:57:560
3504190992922,5cyclictest3724910-21cron22:50:000
350419799282,7cyclictest3565401-21ntpq20:08:012
350419799282,6cyclictest3670686-21apt-get21:57:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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