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2025-12-10 - 16:56

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 Wed Dec 10, 2025 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
399040721920,3sleep3586-21kworker/3:2-events08:26:103
3910482996152,6cyclictest3941095-21ntpq07:36:140
3910485995951,6cyclictest3990930-21apt-get08:26:201
3910482995039,8cyclictest4000842-21ntpq08:36:140
3910482994735,9cyclictest282-21systemd-journal11:06:000
3910482994638,6cyclictest282-21systemd-journal08:15:000
3910485994336,5cyclictest3890812-21kworker/u8:1+flush-8:008:01:211
3910485994334,7cyclictest282-21systemd-journal09:23:001
3910482994338,3cyclictest3981693-21kworker/u8:0+events_unbound11:36:080
3910482994337,4cyclictest3890812-21kworker/u8:1+flush-8:007:16:060
3910485994235,5cyclictest3981656-21latency_hist08:20:011
3910485994235,5cyclictest282-21systemd-journal10:00:001
3910485994232,7cyclictest4076375-21latency_hist09:55:021
3910482994238,3cyclictest3858451-21kworker/u8:2+flush-8:007:56:200
3910485994131,8cyclictest4175053-21ntpq11:31:141
3910482994132,6cyclictest4136130-21latency_hist10:55:020
3910482994130,9cyclictest282-21systemd-journal07:15:010
3910485994035,4cyclictest3890812-21kworker/u8:1+flush-8:008:31:051
3910485994032,6cyclictest4111450-21kworker/u8:1+flush-8:011:21:061
3910485994032,6cyclictest17325-21apt-get12:10:591
3910488993927,9cyclictest282-21systemd-journal07:40:012
3910485993931,6cyclictest3981965-21/usr/sbin/munin08:21:111
3910482993932,5cyclictest3981693-21kworker/u8:0+flush-8:008:31:220
3910482993930,7cyclictest3962186-21/usr/sbin/munin08:01:180
3910482993922,14cyclictest4090870-21grep10:06:330
3910482993833,4cyclictest4026901-21kworker/u8:1+flush-8:009:41:110
3910482993833,4cyclictest4026901-21kworker/u8:1+flush-8:009:41:100
3910482993831,5cyclictest4086532-21kworker/u8:2+flush-8:011:01:250
3910482993831,5cyclictest4076630-21kworker/u8:3+events_unbound09:56:130
3910482993830,6cyclictest4186340-21apt-get11:46:000
3910482993829,7cyclictest4164940-21ntpq11:21:140
3910482993828,7cyclictest3976988-21/usr/sbin/munin08:16:150
160112380,4chrt281rcuc/112:06:131
3910485993730,5cyclictest4136453-21apt-get10:56:011
3910485993730,5cyclictest3951121-21ntpq07:46:151
3910482993731,4cyclictest3996991-21kworker/u8:2+flush-8:008:56:310
3910482993729,6cyclictest4035791-21kworker/u8:2+flush-8:009:26:150
3910482993729,5cyclictest4154996-21ntpq11:11:120
3910485993629,5cyclictest4156215-21apt-get11:16:001
3910485993626,7cyclictest4106494-21latency_hist10:25:011
3910485993624,9cyclictest4011569-21latency_hist08:50:011
3910482993629,5cyclictest3858451-21kworker/u8:2+flush-8:008:06:170
391014623622,9sleep10-21swapper/107:07:481
3910488993526,7cyclictest282-21systemd-journal12:24:592
3910485993530,3cyclictest3981693-21kworker/u8:0+events_unbound09:11:111
3910485993528,5cyclictest4111759-21apt-get10:30:591
3910485993528,5cyclictest4036551-21apt-get09:15:021
3910482993529,4cyclictest4111450-21kworker/u8:1+events_unbound11:56:180
3910482993529,4cyclictest3996991-21kworker/u8:2+events_unbound08:46:150
3910482993528,5cyclictest3890812-21kworker/u8:1+flush-8:007:21:230
391048299351,31cyclictest3952026-21unin-run07:50:000
3910488993430,3cyclictest4035791-21kworker/u8:2+events_unbound09:25:012
3910485993427,5cyclictest282-21systemd-journal12:30:051
3910482993427,4cyclictest1311-21kworker/u8:2+events_unbound11:51:230
3910482993427,4cyclictest1311-21kworker/u8:2+events_unbound11:51:230
3910482993329,3cyclictest3890812-21kworker/u8:1+flush-8:007:26:060
39110052320,4sleep20-21swapper/207:11:052
3910488993225,5cyclictest4186012-21cp11:45:002
3910485993222,8cyclictest3914486-21ntpq07:11:141
3910482993229,1cyclictest3981693-21kworker/u8:0+events_unbound09:36:150
3910482993226,4cyclictest4026901-21kworker/u8:1+flush-8:009:46:200
3910482993225,5cyclictest4186251-21kworker/u8:0+events_unbound12:31:130
3910482993225,5cyclictest12681-21grep12:06:050
3910482993224,5cyclictest4101306-21latency_hist10:20:010
39082662324,22sleep00-21swapper/007:06:110
3910485993126,3cyclictest3917656-21aten2_r5power_e07:16:031
3910485993124,5cyclictest4035791-21kworker/u8:2+events_unbound09:26:151
3910485993123,6cyclictest3922582-21apt-get07:21:021
3910482993123,4cyclictest3947034-21true07:45:010
3910482993121,5cyclictest0-21swapper/010:36:010
3910482993114,11cyclictest45750irq/130-enp3s0-TxRx-309:31:000
41527452300,6sleep20-21swapper/211:11:082
39613202300,5sleep20-21swapper/207:56:202
3910488993020,8cyclictest4165798-21apt-get11:25:002
3910485993026,2cyclictest0-21swapper/107:41:081
3910485993021,7cyclictest4166360-21apt-get11:26:001
3910482993026,3cyclictest4186251-21kworker/u8:0+flush-8:012:36:260
3910482993025,4cyclictest3996991-21kworker/u8:2+events_unbound08:51:190
3910482993024,4cyclictest6813-21kworker/u8:3+events_unbound12:01:090
3910482993022,6cyclictest3869035-21kworker/u8:0+flush-8:007:31:060
3910488992925,2cyclictest4037417-21fschecks_time09:16:062
3910485992924,4cyclictest4082381-21irqrtprio10:01:071
3910485992920,7cyclictest4091530-21apt-get10:11:011
3910485992920,6cyclictest282-21systemd-journal07:27:351
3910482992923,4cyclictest3981693-21kworker/u8:0+events_unbound11:31:020
3910482992920,5cyclictest0-21swapper/010:41:030
3910482992920,5cyclictest0-21swapper/010:41:020
3910482992916,11cyclictest0-21swapper/011:45:000
3910488992820,6cyclictest3996518-21apt-get08:35:002
3910488992820,6cyclictest282-21systemd-journal11:35:002
3910488992818,2cyclictest161rcu_preempt09:36:052
3910485992825,2cyclictest46269-21runrttasks12:36:241
3910485992825,2cyclictest2508-21aten2_r5power_c11:56:031
3910485992821,5cyclictest282-21systemd-journal07:55:491
391048299285,18cyclictest3976708-21kworker/0:2+events08:40:220
3910482992823,4cyclictest3981693-21kworker/u8:0+flush-8:011:16:210
3910482992823,4cyclictest3981693-21kworker/u8:0+flush-8:008:26:170
3910482992822,4cyclictest3981693-21kworker/u8:0+flush-8:009:51:060
3910482992822,4cyclictest3981693-21kworker/u8:0+flush-8:008:21:210
391048299282,18cyclictest610-21sshd09:21:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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