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2026-03-11 - 12:27

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.
Unexpectedly long latencies may be caused by SMIs
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 Wed Mar 11, 2026 00:45:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1450998998854,17cyclictest1456948-21kworker/u8:021:40:020
145099899711,37cyclictest131rcu_preempt00:36:300
145099899711,37cyclictest131rcu_preempt00:36:300
1451002996829,9cyclictest23-21ksoftirqd/122:25:461
145099899661,32cyclictest131rcu_preempt22:00:030
1450998996415,40cyclictest12-21ksoftirqd/020:20:020
145100299637,41cyclictest3467718-21lldpd22:55:031
145100299637,41cyclictest3467718-21lldpd22:55:021
1450998996329,13cyclictest131rcu_preempt23:25:220
1450998996329,13cyclictest131rcu_preempt23:25:220
145099899631,26cyclictest131rcu_preempt23:15:010
1450998996241,18cyclictest16850irq/134-800000000:05:010
145099899617,17cyclictest1533187-40mandb00:00:000
145099899615,36cyclictest131rcu_preempt22:54:510
1450998996153,4cyclictest16950irq/224-800000023:55:010
145099899615,19cyclictest284-21systemd-logind21:20:000
1450998996139,18cyclictest16850irq/134-800000021:10:000
1450998996119,4cyclictest131rcu_preempt22:59:110
1450998996119,4cyclictest131rcu_preempt22:59:110
145100299606,41cyclictest1495425-21ssh22:35:021
1450998996026,17cyclictest1482112-21ssh22:05:090
1451006995943,7cyclictest1531257-21kworker/2:000:01:562
1450998995919,6cyclictest16850irq/134-800000000:05:360
1450998995819,6cyclictest16850irq/134-800000023:21:250
1450998995818,32cyclictest16850irq/134-800000021:27:120
1450998995816,32cyclictest16850irq/134-800000022:15:590
1451002995740,13cyclictest3467602-21systemd-journal21:45:181
145099899573,3cyclictest131rcu_preempt20:25:000
145099899572,3cyclictest131rcu_preempt21:34:490
1450998995719,6cyclictest16850irq/134-800000021:41:030
1450998995719,30cyclictest16850irq/134-800000022:13:140
1450998995718,34cyclictest16850irq/134-800000023:46:240
1450998995718,31cyclictest16850irq/134-800000000:18:110
1450998995717,36cyclictest16850irq/134-800000022:28:010
1450998995717,31cyclictest16850irq/134-800000023:35:210
1450998995717,31cyclictest16850irq/134-800000022:35:330
1450998995716,33cyclictest16850irq/134-800000022:22:500
1450998995716,32cyclictest16850irq/134-800000000:34:070
1451006995630,7cyclictest1488551-21kworker/2:122:46:002
1451002995635,10cyclictest23-21ksoftirqd/121:10:001
1450998995619,33cyclictest16850irq/134-800000023:40:490
1450998995618,34cyclictest16850irq/134-800000021:46:560
1450998995618,33cyclictest16850irq/134-800000023:30:380
1450998995617,31cyclictest16850irq/134-800000023:16:270
1450998995617,31cyclictest16850irq/134-800000023:16:270
1450998995617,31cyclictest16850irq/134-800000021:24:120
1450998995617,31cyclictest16850irq/134-800000021:24:110
1450998995616,32cyclictest16850irq/134-800000000:20:230
1450998995616,31cyclictest16850irq/134-800000022:44:490
1450998995616,31cyclictest16850irq/134-800000022:00:490
1450998995616,31cyclictest16850irq/134-800000000:28:080
1450998995517,34cyclictest16850irq/134-800000022:30:540
1450998995517,34cyclictest16850irq/134-800000000:14:150
1450998995516,31cyclictest16850irq/134-800000022:48:550
1450998995512,23cyclictest12-21ksoftirqd/021:55:020
145100699543,6cyclictest30-21ksoftirqd/219:40:022
145100699543,6cyclictest30-21ksoftirqd/219:40:022
1451006995436,12cyclictest1-21systemd23:30:002
1451006995436,12cyclictest1-21systemd23:30:002
1451006995434,7cyclictest1488551-21kworker/2:123:24:572
1451006995431,8cyclictest1488551-21kworker/2:122:31:102
1450998995418,6cyclictest16850irq/134-800000021:13:590
145101099531,4cyclictest131rcu_preempt22:30:023
145100299531,32cyclictest23-21ksoftirqd/121:40:041
1450998995317,7cyclictest16850irq/134-800000023:04:150
1451006995244,5cyclictest1531257-21kworker/2:000:28:092
1451006995243,6cyclictest1531257-21kworker/2:000:33:272
1451006995232,7cyclictest1488551-21kworker/2:123:50:242
1451006995143,5cyclictest1531257-21kworker/2:000:06:582
1451006995143,5cyclictest1488551-21kworker/2:123:14:372
1451006995143,5cyclictest1488551-21kworker/2:122:28:192
1451006995142,5cyclictest1488551-21kworker/2:123:00:022
1451006995142,5cyclictest1488551-21kworker/2:123:00:022
1451006995124,9cyclictest1455766-21date20:40:022
145099899513,6cyclictest1452532-21munin-run19:40:000
145099899513,6cyclictest1452532-21munin-run19:40:000
1450998995112,31cyclictest16850irq/134-800000023:06:500
1450998995112,31cyclictest16850irq/134-800000023:06:500
1451010995032,14cyclictest275-21dbus-daemon20:30:013
145100699504,4cyclictest131rcu_preempt00:00:002
1451006995042,5cyclictest1488551-21kworker/2:123:33:142
1451006995042,5cyclictest1450405-21kworker/2:320:05:012
1451006995042,5cyclictest1450405-21kworker/2:320:05:012
1451006995041,5cyclictest1450405-21kworker/2:321:46:022
1451006995041,5cyclictest1450405-21kworker/2:321:42:182
1451006995023,9cyclictest1450405-21kworker/2:321:34:562
1451002995032,13cyclictest3467602-21systemd-journal23:47:181
1451010994922,9cyclictest37-21ksoftirqd/300:01:353
1451010994918,11cyclictest0-21swapper/322:20:153
145100699494,3cyclictest131rcu_preempt23:20:012
145100699494,3cyclictest131rcu_preempt23:20:002
1451006994941,5cyclictest1488551-21kworker/2:123:35:052
1451006994941,5cyclictest1471147-21kworker/2:022:20:432
1451006994941,5cyclictest1471147-21kworker/2:022:14:552
1451006994940,6cyclictest1531257-21kworker/2:000:24:082
1451006994940,6cyclictest1450405-21kworker/2:321:39:292
1451006994936,8cyclictest1-21systemd19:30:012
145100699493,3cyclictest131rcu_preempt22:20:012
1451006994923,10cyclictest1450405-21kworker/2:321:00:032
145100299495,4cyclictest131rcu_preempt22:40:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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