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2026-08-29 - 00:50

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 28, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
382246599205180,22cyclictest4063446-21python311:07:480
382247099177173,2cyclictest0-21swapper/111:07:471
382247199176171,3cyclictest4063447-21sshd11:07:482
387206921320,4sleep3481ktimers/307:57:393
41306782630,6sleep20-21swapper/212:17:382
39431902560,6sleep3451irq_work/309:07:423
3822465994841,5cyclictest275-21systemd-journal09:32:480
3822470994738,7cyclictest3864548-21apt-get07:50:371
3822465994739,5cyclictest4113576-21latency_hist12:00:000
3822465994739,5cyclictest4113576-21latency_hist12:00:000
3822471994637,7cyclictest4053907-21cp11:00:002
3822465994615,18cyclictest573-21runrttasks07:57:310
3822465994434,8cyclictest3989254-21/usr/sbin/munin09:57:480
3822465994333,8cyclictest275-21systemd-journal12:33:480
3822465994233,7cyclictest4053790-21latency_hist11:00:010
382219624228,9sleep10-21swapper/107:08:461
3822465994132,6cyclictest275-21systemd-journal07:36:370
3822465994115,11cyclictest3889675-21apt-get08:17:320
3822470994033,5cyclictest275-21systemd-journal10:01:481
3822470994032,6cyclictest275-21systemd-journal11:38:471
39744812390,2sleep3575-21kworker/3:2+mm_percpu_wq09:42:293
3822470993931,6cyclictest3874180-21latency_hist08:00:001
3822465993935,3cyclictest3475338-21kworker/u8:4+events_unbound07:12:370
40009142380,1sleep1281rcuc/110:07:391
382247199389,14cyclictest3864750-21apt-get07:52:322
3822465993818,16cyclictest3833542-21ntpq07:17:420
3822465993816,10cyclictest3888471-21ntpq08:12:440
3822465993813,14cyclictest3908387-21/usr/sbin/munin08:32:480
382247199374,21cyclictest4114339-21tune2fs12:02:352
382247199374,21cyclictest4114339-21tune2fs12:02:352
3822465993723,9cyclictest3859748-21apt-get07:47:310
3822465993714,9cyclictest3958807-21/usr/sbin/munin09:22:500
3822465993711,16cyclictest4033440-21runrttasks10:37:470
382247199368,14cyclictest3879829-21apt-get08:07:322
3822465993615,6cyclictest4137767-21/usr/sbin/munin12:22:490
3822465993614,5cyclictest4127672-21ntpq12:12:440
3822465993614,10cyclictest3918215-21ntpq08:42:460
3822465993613,8cyclictest4073171-21/usr/sbin/munin11:17:470
3822465993613,6cyclictest3858646-21ntpq07:42:460
3822465993613,11cyclictest3868512-21ntpq07:52:440
3822465993612,8cyclictest573-21runrttasks10:12:310
3822465993612,14cyclictest0-21swapper/008:23:560
3822465993612,14cyclictest0-21swapper/008:23:560
3822471993527,6cyclictest3874304-21gpgv08:00:002
3822465993523,8cyclictest4128814-21apt-get12:17:290
3822465993515,8cyclictest3984832-21/usr/sbin/munin09:52:370
3822465993514,8cyclictest4068121-21ntpq11:12:450
3822465993514,7cyclictest3945020-21/usr/sbin/munin09:12:350
3822465993513,9cyclictest4048107-21ntpq10:52:430
3822465993513,8cyclictest3949537-21sshd09:15:480
3822465993513,6cyclictest407-21mta-sts-daemon12:06:070
3822465993513,5cyclictest3923077-21ntpq08:47:440
3822465993511,9cyclictest4103043-21ntpq11:47:460
3822465993510,11cyclictest4079351-21runrttasks11:26:300
382247199348,13cyclictest4083460-21python311:27:482
3822470993427,5cyclictest275-21systemd-journal08:44:481
3822470993426,6cyclictest275-21systemd-journal09:38:481
3822470993425,6cyclictest275-21systemd-journal10:18:481
3822465993415,6cyclictest3880550-21/usr/sbin/munin08:07:370
3822465993414,5cyclictest4058300-21ntpq11:02:440
3822465993414,5cyclictest4013335-21ntpq10:17:420
3822465993414,4cyclictest4043416-21python310:47:490
3822465993414,10cyclictest4038502-21python310:42:480
3822465993413,6cyclictest573-21runrttasks09:47:310
3822465993413,5cyclictest3997976-21ntpq10:02:430
3822465993412,9cyclictest573-21runrttasks08:54:250
3822465993412,9cyclictest3838504-21ntpq07:22:440
3822465993412,5cyclictest3933230-21ntpq08:57:460
3822465993411,10cyclictest573-21runrttasks10:22:020
3822470993328,3cyclictest3879377-21cron08:05:001
3822470993326,5cyclictest3934481-21aten2_r5power_p09:02:321
3822470993325,6cyclictest3904608-21aten2_r5power_p08:32:341
3822465993327,3cyclictest4084389-21apt-get11:32:310
3822465993325,4cyclictest4074500-21apt-get11:22:320
3822465993319,11cyclictest4003195-21ntpq10:07:440
3822465993314,5cyclictest4023238-21ntpq10:27:470
3822465993314,10cyclictest4118021-21python312:02:490
3822465993314,10cyclictest4118021-21python312:02:490
3822465993313,5cyclictest3938218-21ntpq09:02:450
3822465993313,5cyclictest3843513-21ntpq07:27:450
3822465993312,8cyclictest4025032-21/usr/sbin/munin10:32:370
3822465993312,7cyclictest0-21swapper/009:44:140
3822465993312,7cyclictest0-21swapper/008:36:270
3822465993312,5cyclictest3903329-21ntpq08:27:430
38372952320,2sleep3481ktimers/307:22:403
3822471993224,6cyclictest275-21systemd-journal12:11:482
3822470993228,3cyclictest4034055-21systemd-run10:40:001
3822470993227,3cyclictest3913684-21unixbench_multi08:37:491
3822470993224,6cyclictest4023662-21unixbench_singl10:27:511
3822465993227,3cyclictest3943889-21unixbench_singl09:07:510
3822465993225,3cyclictest4148830-21apt-get12:37:300
3822465993224,3cyclictest4094280-21apt-get11:42:310
3822465993221,7cyclictest3959655-21apt-get09:27:310
3822465993214,4cyclictest3969979-21/usr/sbin/munin09:37:340
3822465993213,5cyclictest4093136-21ntp_offset11:37:450
3822465993212,5cyclictest4142573-21ntpq12:27:470
382247199316,5cyclictest3933284-21ntpq08:57:472
3822471993126,3cyclictest3859979-21tr07:47:322
3822471993110,5cyclictest4086542-21/usr/sbin/munin11:32:382
3822470993126,3cyclictest4043093-21needreboot10:47:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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