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2026-01-11 - 15:39

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 Sun Jan 11, 2026 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4011274999590,3cyclictest0-21swapper/010:10:020
4011274997729,15cyclictest131rcu_preempt11:11:270
4011274997129,16cyclictest131rcu_preempt09:15:000
4011274997129,16cyclictest131rcu_preempt09:15:000
4011274997113,50cyclictest12-21ksoftirqd/012:28:480
4011274996948,7cyclictest12-21ksoftirqd/012:37:180
4011288996727,36cyclictest3467602-21systemd-journal09:12:343
4011288996727,36cyclictest3467602-21systemd-journal09:12:343
4011274996636,9cyclictest12-21ksoftirqd/010:20:020
4011288996526,35cyclictest4020934-21sh09:17:213
4011288996517,12cyclictest1-21systemd12:25:013
4011288996517,12cyclictest1-21systemd12:25:013
401127499658,53cyclictest12-21ksoftirqd/010:24:180
4011274996523,37cyclictest12-21ksoftirqd/010:57:440
4011288996425,34cyclictest4017437-21diskmemload10:20:043
4011288996327,33cyclictest37-21ksoftirqd/311:18:313
4011288996325,5cyclictest4059492-21sh10:40:443
4011288996320,13cyclictest4068145-21basename11:00:003
4011288996319,5cyclictest4099441-21sh12:07:563
4011288996126,30cyclictest4015619-21latency_hist08:35:023
4011288996125,6cyclictest4037029-21sh09:52:223
4011288996125,32cyclictest4103982-21sh12:17:423
401128899612,20cyclictest4065851-21cut10:55:003
401128899612,20cyclictest4065851-21cut10:55:003
4011288996119,12cyclictest0-21swapper/312:40:013
4011288996118,11cyclictest37-21ksoftirqd/311:02:043
4011288996117,7cyclictest4054553-21sshd10:30:073
4011274996138,17cyclictest4098047-21cron12:05:000
4011274996136,17cyclictest12-21ksoftirqd/012:18:380
4011274996115,42cyclictest12-21ksoftirqd/009:17:200
4011274996112,40cyclictest12-21ksoftirqd/011:08:150
4011288996043,13cyclictest3467602-21systemd-journal08:55:013
4011288996025,6cyclictest4090670-21sh11:49:003
4011288996017,8cyclictest4026466-21sshd09:29:343
4011288996017,7cyclictest4014843-21cron08:20:003
4011288995925,6cyclictest4027109-21sh09:30:433
4011288995925,12cyclictest37-21ksoftirqd/307:20:023
4011288995925,12cyclictest37-21ksoftirqd/307:20:023
401128899592,19cyclictest4047405-21unin-run10:15:013
4011274995955,2cyclictest0-21swapper/008:00:020
401127499593,50cyclictest4086575-21grep11:40:000
401127499593,50cyclictest4086575-21grep11:40:000
401127499591,5cyclictest131rcu_preempt11:45:010
4011274995914,41cyclictest12-21ksoftirqd/009:24:280
4011288995842,12cyclictest3467602-21systemd-journal08:45:013
4011288995842,12cyclictest3467602-21systemd-journal08:45:013
4011288995837,15cyclictest3467602-21systemd-journal12:35:003
4011288995826,28cyclictest4012263-21/usr/sbin/munin07:30:013
4011288995823,4cyclictest4017437-21diskmemload11:08:503
4011288995820,5cyclictest4017437-21diskmemload10:25:583
4011288995820,5cyclictest4017437-21diskmemload10:25:573
4011288995725,7cyclictest37-21ksoftirqd/312:03:193
4011288995722,5cyclictest4108060-21sh12:26:233
4011288995717,13cyclictest309-21in:imuxsock10:10:013
401128899571,19cyclictest4012971-21cat07:40:023
401127499577,7cyclictest12-21ksoftirqd/009:50:010
4011274995738,13cyclictest1-21systemd10:05:010
401127499573,14cyclictest4031242-21latency_hist09:40:000
4011274995729,5cyclictest4063613-21latency_hist10:50:020
4011288995625,4cyclictest4085314-21sh11:37:033
4011288995625,4cyclictest4085314-21sh11:37:033
4011288995620,4cyclictest4017437-21diskmemload11:56:153
4011288995614,10cyclictest4081976-21cron11:30:003
401127499563,14cyclictest4079933-21latency_hist11:25:020
401127499561,38cyclictest131rcu_preempt12:30:190
4011288995520,9cyclictest37-21ksoftirqd/311:24:463
4011288995518,5cyclictest4084296-21cron11:35:003
401127499557,38cyclictest16950irq/224-800000011:35:010
4011274995526,14cyclictest4056094-21ssh10:33:440
4011288995436,13cyclictest3467602-21systemd-journal11:55:003
401128899543,13cyclictest4033557-21modprobe09:45:003
4011288995421,4cyclictest4014577-21latency_hist08:15:013
4011274995419,31cyclictest0-21swapper/009:50:150
4011274995418,4cyclictest40284721ssh09:33:550
4011274995416,14cyclictest131rcu_preempt11:58:170
4011288995320,5cyclictest4074440-21rm11:13:253
4011288995318,9cyclictest37-21ksoftirqd/310:04:583
4011274995338,11cyclictest3467602-21systemd-journal08:35:000
401127499533,45cyclictest4065981-21ssh10:55:020
401127499533,45cyclictest4065981-21ssh10:55:020
4011274995334,13cyclictest3467602-21systemd-journal08:50:000
401127499532,14cyclictest275-21dbus-daemon10:30:000
401127499532,14cyclictest275-21dbus-daemon10:30:000
4011288995225,6cyclictest37-21ksoftirqd/309:56:153
4011288995225,6cyclictest37-21ksoftirqd/309:56:153
4011288995221,6cyclictest37-21ksoftirqd/309:20:253
4011288995221,5cyclictest37-21ksoftirqd/309:46:273
4011288995217,8cyclictest37-21ksoftirqd/310:47:203
4011288995216,12cyclictest1-21systemd12:15:013
4011288995216,12cyclictest1-21systemd12:15:013
401127499523,44cyclictest4058935-21modprobe10:40:000
401128899512,21cyclictest4012011-21munin-run07:24:593
4011288995116,8cyclictest37-21ksoftirqd/308:40:033
4011274995131,14cyclictest275-21dbus-daemon10:45:010
401127499512,9cyclictest3467602-21systemd-journal09:00:000
4011274995122,25cyclictest12-21ksoftirqd/011:29:470
401127499511,3cyclictest0-21swapper/008:10:020
401127499511,3cyclictest0-21swapper/008:10:020
4011280995029,15cyclictest275-21dbus-daemon10:55:011
4011280995029,15cyclictest275-21dbus-daemon10:55:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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