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2026-06-01 - 23:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack2slot7s.osadl.org (updated Mon Jun 01, 2026 12:42:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
436114995529,17cyclictest151ktimers/008:16:010
43611499531,44cyclictest151ktimers/009:46:070
436115995140,4cyclictest0-21swapper/109:16:041
436116995038,8cyclictest3835474-21cups-browsed11:16:562
436115995036,11cyclictest526816-21entropy10:35:551
436114994841,3cyclictest0-21swapper/010:25:010
43611699479,27cyclictest520950-21ssh10:26:052
43611599475,35cyclictest517888-21ssh10:21:111
43611699462,36cyclictest539904-21ssh10:56:002
436116994539,2cyclictest0-21swapper/210:09:022
436116994537,5cyclictest481605-21ssh09:25:012
43611499453,30cyclictest524080-21ssh10:31:030
436114994432,7cyclictest151ktimers/009:01:040
436116994233,6cyclictest461532-21unixbench_singl08:31:142
43611699421,31cyclictest501928-21ssh09:56:062
436114994235,4cyclictest541929-21systemd-run11:00:010
436115994132,6cyclictest526212-21latency_hist10:35:021
436115994132,6cyclictest493584-21sshd09:43:011
436114994135,4cyclictest564027-21systemd11:35:020
436114994127,11cyclictest451091-21munin-run08:00:010
436114994126,7cyclictest12350irq/32-eth010:41:010
43611699404,30cyclictest580927-21sshd12:01:022
436116994032,5cyclictest464608-21cut08:45:012
436116993933,3cyclictest0-21swapper/210:40:012
436114993931,5cyclictest421-21dbus-daemon10:30:010
436116993833,2cyclictest0-21swapper/207:40:012
436116993832,3cyclictest0-21swapper/208:00:012
436116993830,5cyclictest519673-21latency_hist10:25:012
436116993829,6cyclictest261-21systemd-journal07:55:012
436116993823,8cyclictest567126-21idleruntime-cro11:40:012
436115993833,3cyclictest0-21swapper/108:00:011
436115993831,4cyclictest510181-21kworker/u8:11+xprtiod10:10:011
436115993830,5cyclictest470623-21systemd-run09:05:011
436115993830,4cyclictest0-21swapper/111:36:031
436115993828,7cyclictest473763-21timerwakeupswit09:11:121
436114993832,3cyclictest0-21swapper/008:15:010
43611499382,23cyclictest1055-21mta-sts-daemon10:06:000
436116993731,3cyclictest0-21swapper/210:16:002
436116993729,3cyclictest0-21swapper/208:40:012
436116993728,6cyclictest548-21gdbus08:26:142
436116993728,4cyclictest0-21swapper/210:01:002
436116993727,7cyclictest447421-21needreboot07:46:022
436114993729,5cyclictest552258-21fschecks_time11:15:540
436114993729,3cyclictest0-21swapper/012:31:020
436114993728,6cyclictest534172-21grep10:46:120
436114993715,15cyclictest12350irq/32-eth011:51:000
436114993714,16cyclictest479651-21ntpq09:21:050
43611699364,28cyclictest587232-21ssh12:11:032
436116993629,3cyclictest0-21swapper/212:15:562
436116993624,8cyclictest3835474-21cups-browsed11:11:032
436115993629,3cyclictest0-21swapper/109:46:081
436115993628,5cyclictest604802-21idleruntime-cro12:40:011
436115993628,5cyclictest548286-21systemd-run11:10:011
436115993627,4cyclictest0-21swapper/111:31:031
43611699356,24cyclictest494321-21cat09:45:022
436116993528,4cyclictest1056-21mta-sts-daemon11:56:012
436116993527,5cyclictest546900-21grep11:06:132
436116993526,6cyclictest576529-21cron11:55:012
436115993527,5cyclictest541935-21systemd-run11:00:011
436115993526,6cyclictest599975-21mailstats12:31:091
43611599352,27cyclictest514604-21ssh10:16:031
43611599351,24cyclictest552618-21sh11:16:001
436116993426,4cyclictest0-21swapper/210:41:022
436115993428,3cyclictest1051-21mta-sts-daemon11:56:061
436115993427,4cyclictest440616-21idleruntime-cro07:25:001
436115993427,3cyclictest0-21swapper/112:26:021
436114993429,3cyclictest487984-21latency_hist09:35:020
436114993428,4cyclictest504621-21ssh10:00:540
436114993424,6cyclictest578266-21grep11:56:130
43611499342,26cyclictest476634-21ssh09:16:110
436114993421,9cyclictest567162-21kworker/u8:1+xprtiod12:01:060
43611699333,13cyclictest439519-21aten2.4-expect07:20:512
436116993328,3cyclictest529325-21kworker/u8:5-xprtiod10:51:042
436116993327,3cyclictest1055-21mta-sts-daemon08:20:002
436116993323,6cyclictest3835471-21cupsd09:27:092
43611699332,24cyclictest489122-21ssh09:36:022
436116993312,5cyclictest36-21ksoftirqd/208:06:092
436115993326,5cyclictest0-21swapper/107:35:021
436115993326,4cyclictest695-21cron09:55:001
436115993325,5cyclictest592230-21sendmail12:20:011
436115993325,5cyclictest452146-21processes08:01:071
436115993325,5cyclictest1-21systemd08:45:011
436115993325,4cyclictest0-21swapper/109:26:051
436115993324,6cyclictest421-21dbus-daemon11:05:011
43611599332,26cyclictest533632-21sh10:46:021
436114993327,4cyclictest460633-21fschecks_time08:30:550
436114993325,5cyclictest494291-21true09:45:010
43611699324,20cyclictest495560-21ssh09:46:042
436116993224,5cyclictest437595-21sh07:15:002
436116993224,5cyclictest0-21swapper/209:51:012
436116993222,6cyclictest261-21systemd-journal11:30:012
43611699322,25cyclictest568409-21ssh11:41:042
436116993221,3cyclictest171rcu_preempt11:45:372
436116993220,7cyclictest584104-21sh12:06:052
43611699321,23cyclictest485939-21sshd09:31:012
436115993226,3cyclictest0-21swapper/110:05:021
436115993225,4cyclictest559469-21timerwakeupswit11:26:131
436115993225,4cyclictest468104-21fschecks_count08:55:561
436115993224,5cyclictest0-21swapper/110:51:021
436115993224,4cyclictest0-21swapper/110:00:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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