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2025-11-21 - 06:15

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Fri Nov 21, 2025 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3640449999688,6cyclictest37-21ksoftirqd/322:55:023
364044999941,3cyclictest131rcu_preempt20:30:023
3640449997222,11cyclictest272-21dbus-daemon00:00:013
3640444996523,15cyclictest235-21systemd-journal23:25:012
3640444996318,5cyclictest0-21swapper/222:25:012
3640444996123,4cyclictest3655388-21latency_hist23:55:012
3640444996026,31cyclictest30-21ksoftirqd/220:40:022
3640444995916,11cyclictest3654072-21cat23:30:022
3640444995819,8cyclictest3652066-21sshd22:53:292
3640435995829,3cyclictest131rcu_preempt23:06:290
3640435995826,3cyclictest131rcu_preempt20:25:000
3640449995740,12cyclictest1-21systemd19:35:003
3640444995723,6cyclictest3654349-21latency_hist23:35:022
364044499572,21cyclictest3656558-21munin-run00:20:002
3640444995721,10cyclictest3656075-21cut00:10:002
3640444995716,6cyclictest0-21swapper/222:40:002
3640439995740,12cyclictest1-21systemd21:25:011
3640435995713,12cyclictest235-21systemd-journal19:59:590
3640444995630,20cyclictest235-21systemd-journal21:50:002
3640444995526,8cyclictest30-21ksoftirqd/221:25:012
3640444995519,8cyclictest30-21ksoftirqd/222:50:002
364043599551,16cyclictest3657626-21sendmail-msp00:39:590
3640444995320,8cyclictest1-21systemd21:55:012
3640444995318,9cyclictest3647881-21cat21:30:032
3640444995313,11cyclictest408-21lldpd19:20:032
3640449995241,6cyclictest131rcu_preempt21:25:023
3640444995222,7cyclictest30-21ksoftirqd/222:25:282
3640444995222,4cyclictest3654740-21latency_hist23:45:022
3640439995233,14cyclictest1-21systemd21:40:001
364044999513,28cyclictest3656263-21kworker/u8:200:30:013
3640444995124,7cyclictest1-21systemd21:05:012
3640444995123,10cyclictest235-21systemd-journal19:40:002
3640444995119,7cyclictest3643109-21latency_hist20:00:022
3640439995134,13cyclictest1-21systemd20:20:001
3640435995132,16cyclictest3640905-21run-parts19:20:000
3640444995034,12cyclictest235-21systemd-journal00:35:012
3640444995034,12cyclictest235-21systemd-journal00:35:002
3640444995020,9cyclictest30-21ksoftirqd/220:10:012
3640444995018,8cyclictest30-21ksoftirqd/221:45:012
3640435995043,4cyclictest16950irq/224-800000021:45:000
3640444994934,11cyclictest235-21systemd-journal22:20:012
3640439994939,6cyclictest0-21swapper/119:10:011
3640439994933,11cyclictest272-21dbus-daemon20:15:011
3640439994923,5cyclictest23-21ksoftirqd/121:55:001
3640435994942,4cyclictest16950irq/224-800000022:35:000
3640435994914,13cyclictest131rcu_preempt22:12:290
3640435994914,13cyclictest131rcu_preempt22:12:280
364044999489,6cyclictest131rcu_preempt23:22:243
3640444994822,4cyclictest3644318-21latency_hist20:25:022
3640435994841,4cyclictest16950irq/224-800000021:54:590
364043599482,41cyclictest235-21systemd-journal00:05:030
364043599481,43cyclictest48-21kcompactd022:30:010
364043999472,9cyclictest23-21ksoftirqd/119:40:011
3640435994720,23cyclictest12-21ksoftirqd/000:19:200
3640435994712,5cyclictest131rcu_preempt21:35:000
364044999467,8cyclictest1-21systemd20:50:013
364044499463,3cyclictest131rcu_preempt21:15:012
364043999469,11cyclictest23-21ksoftirqd/123:05:011
3640439994637,4cyclictest3649232-21modprobe22:00:011
3640439994637,4cyclictest3649232-21modprobe22:00:001
3640439994633,9cyclictest235-21systemd-journal00:20:011
3640435994618,5cyclictest12-21ksoftirqd/000:30:000
3640435994618,19cyclictest16850irq/134-800000023:01:300
364044999458,6cyclictest131rcu_preempt22:35:013
3640449994518,10cyclictest37-21ksoftirqd/322:05:003
3640444994529,12cyclictest1-21systemd23:50:012
3640444994527,12cyclictest235-21systemd-journal19:25:002
364043999452,8cyclictest23-21ksoftirqd/121:45:011
364043999451,3cyclictest131rcu_preempt21:05:021
364043599457,5cyclictest131rcu_preempt00:00:030
3640435994534,7cyclictest3646609-21cron21:10:000
3640435994531,9cyclictest1-21systemd23:15:000
364044999447,5cyclictest131rcu_preempt21:45:013
3640449994431,10cyclictest272-21dbus-daemon22:40:003
3640444994423,16cyclictest272-21dbus-daemon23:20:012
364043999445,6cyclictest131rcu_preempt20:00:001
364043999445,4cyclictest131rcu_preempt23:19:591
3640439994432,9cyclictest235-21systemd-journal22:15:011
3640439994432,9cyclictest235-21systemd-journal22:15:001
364043999441,3cyclictest131rcu_preempt23:45:011
364043599445,4cyclictest131rcu_preempt23:00:000
3640435994432,9cyclictest235-21systemd-journal19:36:300
3640435994429,11cyclictest272-21dbus-daemon20:40:010
3640435994425,15cyclictest3641413-21sshd19:29:300
364044999438,5cyclictest131rcu_preempt21:55:003
3640449994325,13cyclictest272-21dbus-daemon21:50:013
364043999436,6cyclictest131rcu_preempt19:30:011
364043999435,3cyclictest131rcu_preempt21:35:021
364043999433,8cyclictest3655254-21true23:55:011
3640439994329,10cyclictest1-21systemd21:30:001
3640439994327,12cyclictest235-21systemd-journal23:15:011
3640435994334,6cyclictest12-21ksoftirqd/022:05:000
364043599433,3cyclictest131rcu_preempt22:10:020
3640435994328,11cyclictest3642182-21sshd19:40:290
3640435994328,11cyclictest1-21systemd22:40:000
364043599431,4cyclictest131rcu_preempt21:45:030
364044999429,5cyclictest131rcu_preempt22:58:013
364044999428,5cyclictest131rcu_preempt21:10:023
3640449994234,4cyclictest306-21in:imuxsock20:10:003
3640449994231,9cyclictest37-21ksoftirqd/319:20:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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