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2025-12-25 - 12:41

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 Tue Dec 23, 2025 12:44:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
222484522010,3sleep3575-21kworker/3:2+events09:44:003
232811921890,4sleep30-21swapper/311:29:003
21565522670,6chrt0-21swapper/208:34:012
22749332610,1sleep02274939-21tr10:34:000
2072368995747,7cyclictest2262216-21latency_hist10:20:010
2072373995042,6cyclictest2072248-21kworker/u8:3+flush-8:007:29:091
20971252470,5sleep30-21swapper/307:34:033
2072368994739,5cyclictest2296667-21latency_hist10:55:010
2072373994639,4cyclictest2217685-21kworker/u8:1+flush-8:009:53:561
2072368994615,16cyclictest0-21swapper/011:23:550
2072376994540,3cyclictest2217685-21kworker/u8:1+events_unbound10:30:012
2072376994539,4cyclictest2257299-21kworker/u8:0+flush-8:010:54:152
2072368994527,16cyclictest2375085-21ntpq12:14:050
2072368994523,19cyclictest2301612-21latency_hist11:00:010
2072373994434,7cyclictest2380718-21latency_hist12:20:011
2072368994411,17cyclictest0-21swapper/008:11:190
2072373994233,6cyclictest2400433-21latency_hist12:40:011
2072373994232,7cyclictest2217685-21kworker/u8:1+flush-8:010:19:101
2072368994118,20cyclictest2093232-21ntpq07:29:040
2072373994032,5cyclictest2148745-21latency_hist08:25:001
2072368994022,15cyclictest2350870-21latency_hist11:50:000
2072376993935,3cyclictest2207756-21kworker/u8:2+events_unbound10:25:002
2072373993929,8cyclictest2182578-21ntpq08:59:081
2072368993919,18cyclictest2340892-21unixbench_multi11:39:150
2072376993831,5cyclictest2118732-21apt-get07:55:002
2072376993830,6cyclictest2108765-21gpgv07:45:002
2072373993828,7cyclictest2129567-21/usr/sbin/munin08:09:041
2072368993828,8cyclictest278-21systemd-journal11:05:000
2072376993732,3cyclictest2109163-21kworker/u8:1+flush-8:009:04:132
2072373993732,3cyclictest2113872-21systemd-run07:50:001
20676422374,10sleep10-21swapper/107:05:331
2072373993626,7cyclictest2163510-21latency_hist08:40:011
207236899362,12cyclictest2213299-21apt-get09:33:560
207236899361,7cyclictest2341575-21/usr/sbin/munin11:43:520
207236899361,7cyclictest2341575-21/usr/sbin/munin11:43:520
207236899361,33cyclictest2291126-21ntpq10:49:060
2072376993531,3cyclictest2257299-21kworker/u8:0+flush-8:011:29:012
2072373993528,5cyclictest2382200-21tail12:23:581
2072368993525,8cyclictest2192413-21ntpq09:09:070
2072376993430,3cyclictest2257299-21kworker/u8:0+flush-8:011:59:122
2072376993429,4cyclictest2257299-21kworker/u8:0+flush-8:012:19:052
2072373993424,7cyclictest2326173-21latency_hist11:25:011
207236899349,8cyclictest2222605-21latency_hist09:40:010
2072368993418,14cyclictest2168298-21unixbench_multi08:44:120
2072368993417,15cyclictest2159669-21irqcore08:38:590
2072368993414,17cyclictest2395730-21sshd12:35:110
207236899341,12cyclictest2391105-21apt-get12:33:550
207236899341,10cyclictest2351841-21/usr/sbin/munin11:53:580
2072368993410,7cyclictest1-21systemd07:15:010
207236899340,15cyclictest2386425-21/usr/sbin/munin12:28:560
2072373993329,2cyclictest2158618-21systemd-run08:35:011
2072373993328,3cyclictest411-21dbus-daemon09:05:001
2072373993328,3cyclictest2252523-21awk10:10:011
2072373993327,4cyclictest2168424-21cron08:45:011
2072373993323,8cyclictest2172688-21ntpq08:49:051
2072373993322,8cyclictest278-21systemd-journal12:08:101
207236899332,10cyclictest2356328-21apt-get11:58:530
207236899331,9cyclictest2177751-21/usr/sbin/munin08:54:100
207236899331,9cyclictest2153592-21/usr/sbin/munin08:29:130
2072368993319,13cyclictest2253478-21sort10:13:590
2072368993317,14cyclictest0-21swapper/009:24:330
207236899331,10cyclictest2212123-21ntpq09:29:070
207236899331,10cyclictest2183993-21/usr/sbin/munin09:03:570
2072373993228,2cyclictest2148761-21kworker/u8:0+flush-8:008:53:581
2072373993227,3cyclictest2361782-21fschecks_count12:03:561
2072373993227,3cyclictest2031050-21kworker/u8:0+flush-8:008:04:101
2072373993224,6cyclictest2231831-21ntpq09:49:041
2072373993223,6cyclictest2336093-21latency_hist11:35:011
207236899323,4cyclictest0-21swapper/010:43:510
207236899322,6cyclictest2232986-21apt-get09:53:510
207236899321,9cyclictest2331949-21/usr/sbin/munin11:33:560
207236899321,9cyclictest2169168-21/usr/sbin/munin08:48:550
207236899321,9cyclictest2128629-21/usr/sbin/munin08:04:100
207236899321,8cyclictest2202795-21/usr/sbin/munin09:19:110
2072368993214,16cyclictest0-21swapper/007:53:530
2072368993213,17cyclictest2238619-21tr09:59:000
2072368993213,17cyclictest2082497-21kthreadcore07:19:000
2072368993211,7cyclictest2154461-21df08:33:550
207236899321,10cyclictest2365317-21ntpq12:04:070
207236899321,10cyclictest2246579-21ntpq10:04:050
207236899321,10cyclictest2103094-21ntpq07:39:050
2072368993210,7cyclictest2134052-21cat08:10:000
207236899320,9cyclictest2231871-21/usr/sbin/munin09:49:050
2072376993127,3cyclictest2072248-21kworker/u8:3+flush-8:009:49:032
2072376993125,4cyclictest2083932-21unixbench_singl07:19:102
2072373993126,3cyclictest2297806-21irqcore10:59:011
2072373993125,4cyclictest2149290-21apt-get08:28:531
2072373993120,8cyclictest2088955-21latency_hist07:25:011
2072368993124,5cyclictest2098793-21true07:35:000
2072368993123,6cyclictest2119100-21base6407:55:020
2072368993120,9cyclictest2252109-21apt-get10:10:000
207236899311,9cyclictest2271446-21ntpq10:29:070
207236899311,9cyclictest2197790-21/usr/sbin/munin09:14:120
207236899311,9cyclictest2144625-21diskstats08:23:560
207236899311,9cyclictest2109864-21/usr/sbin/munin07:48:580
207236899311,6cyclictest2327027-21fschecks_time11:28:560
2072368993112,17cyclictest2384832-21missed_timers12:24:020
2072368993111,4cyclictest0-21swapper/012:09:020
207236899311,10cyclictest2104825-21/usr/sbin/munin07:43:590
207236899310,9cyclictest2376536-21/usr/sbin/munin12:18:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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