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2026-03-23 - 03:16

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 Mar 23, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
909192995623,6cyclictest0-21swapper/100:00:251
909192995551,2cyclictest0-21swapper/122:50:241
90919199541,48cyclictest1117459-21ssh00:30:270
909192995347,3cyclictest0-21swapper/121:50:001
909192995347,3cyclictest0-21swapper/121:50:001
909193995244,5cyclictest1054-21mta-sts-daemon00:35:262
909191995041,6cyclictest1051-21mta-sts-daemon23:55:310
909191995030,6cyclictest421-21dbus-daemon22:55:010
909191994914,19cyclictest1115253-21sh00:28:090
909192994838,6cyclictest1027261-21systemd-run22:45:011
909192994838,4cyclictest0-21swapper/121:50:191
909192994838,4cyclictest0-21swapper/121:50:191
909193994637,6cyclictest439-21systemd-logind19:40:022
909191994620,22cyclictest989876-21ssh22:00:280
909191994617,22cyclictest428-21mta-sts-daemon23:45:260
909191994617,22cyclictest428-21mta-sts-daemon23:45:260
909193994536,5cyclictest1095134-21systemd-run00:05:012
909192994535,7cyclictest0-21swapper/123:00:011
90919299453,31cyclictest998419-21ssh22:10:241
909191994537,6cyclictest1031664-21latency_hist22:50:030
909191994533,5cyclictest934128-21ntpq20:30:280
909191994529,13cyclictest985938-21timerwakeupswit21:55:350
909191994524,8cyclictest953065-21sh21:18:380
909191994524,6cyclictest0-21swapper/020:40:010
909191994515,16cyclictest1085271-21sh23:52:380
909191994515,16cyclictest1085271-21sh23:52:380
909193994436,5cyclictest1107882-21latency_hist00:20:012
909193994435,6cyclictest421-21dbus-daemon23:25:312
909193994435,6cyclictest421-21dbus-daemon23:25:312
909192994330,5cyclictest0-21swapper/122:15:261
909192994329,10cyclictest0-21swapper/122:30:291
90919299422,28cyclictest946244-21ssh21:10:221
90919199423,33cyclictest968201-21ssh21:35:270
909191994230,5cyclictest938627-21ntpq20:45:270
909191994219,15cyclictest0-21swapper/020:25:280
909191994217,8cyclictest1106097-21ssh00:16:560
909191994216,12cyclictest1022937-21latency_hist22:40:020
909193994131,7cyclictest971328-21basename21:40:012
909193994131,6cyclictest420-21avahi-daemon23:13:352
909192994134,4cyclictest1022973-21idleruntime-cro22:40:011
90919299411,31cyclictest1053870-21ssh23:15:271
90919299411,31cyclictest1053870-21ssh23:15:271
909191994134,4cyclictest940648-21kworker/u8:12-rpciod00:35:150
909191994130,5cyclictest922078-21ntpq19:50:260
909191994124,13cyclictest911168-21diskstats19:15:170
909191994117,9cyclictest1037868-21ssh22:56:170
909191994116,17cyclictest0-21swapper/020:05:290
909191994116,17cyclictest0-21swapper/020:05:290
90919399404,31cyclictest1024099-21ssh22:40:262
909193994030,7cyclictest925677-21cron20:05:012
90919199404,31cyclictest1070709-21ssh23:35:230
90919199404,31cyclictest1070709-21ssh23:35:230
909191994033,3cyclictest1020522-21kworker/u8:0-rpciod23:05:220
909191994033,3cyclictest1020522-21kworker/u8:0-rpciod23:05:220
909191994028,8cyclictest931077-21ntpq20:20:240
909191994027,8cyclictest955007-21ntpq21:20:250
909191994027,8cyclictest937108-21ntpq20:40:250
909191994025,11cyclictest1100438-21ntpq00:10:230
909191994024,13cyclictest960672-21ssh21:26:410
909191994023,14cyclictest925058-21ntpq20:00:240
909191994012,16cyclictest12350irq/32-eth022:30:220
90919399393,25cyclictest963707-21ssh21:30:252
909193993931,5cyclictest934692-21systemd-run20:35:012
909192993931,5cyclictest1116293-21ssh00:30:011
909192993931,5cyclictest1073933-21ssh23:40:011
909192993931,5cyclictest1073933-21ssh23:40:011
909192993929,7cyclictest421-21dbus-daemon00:00:011
909191993932,3cyclictest0-21swapper/021:00:250
909191993930,7cyclictest1-21systemd19:35:010
909191993928,7cyclictest940026-21ntpq20:50:230
909191993928,7cyclictest920531-21ntpq19:45:220
909191993928,4cyclictest914611-21ntpq19:25:260
909191993926,8cyclictest941531-21ntpq20:55:230
909191993924,12cyclictest948624-21ssh21:13:270
90919199391,35cyclictest0-21swapper/000:05:250
90919399384,25cyclictest1036787-21ssh22:55:222
909193993830,5cyclictest1112521-21aten_r2power_fr00:25:162
909193993829,6cyclictest421-21dbus-daemon19:55:012
909193993829,6cyclictest1-21systemd22:55:012
909192993830,5cyclictest937678-21debian-sa120:45:011
909191993830,5cyclictest1-21systemd23:45:010
909191993830,5cyclictest1-21systemd23:45:010
909191993829,7cyclictest0-21swapper/023:35:000
909191993829,7cyclictest0-21swapper/023:35:000
909191993829,4cyclictest929547-21ntpq20:15:240
909191993826,8cyclictest998493-21ntpq22:10:270
909191993826,8cyclictest928154-21ntpq20:10:280
909191993825,9cyclictest913163-21ntpq19:20:300
909191993823,13cyclictest1026901-21ssh22:44:280
909191993823,12cyclictest980261-21ssh21:50:060
909191993823,12cyclictest980261-21ssh21:50:060
909191993822,13cyclictest1050682-21ssh23:11:250
909191993819,15cyclictest965585-21sh21:32:380
909191993817,10cyclictest1092753-21sh00:00:460
909193993728,7cyclictest1001579-21/usr/sbin/munin22:15:012
909193993727,6cyclictest3138547-21cups-browsed22:06:372
909192993729,5cyclictest932196-21fschecks_count20:25:181
909192993729,5cyclictest924183-21idleruntime-cro20:00:011
909192993726,8cyclictest920576-21ntp_kernel_pll_19:45:251
90919299371,28cyclictest955039-21ssh21:20:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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