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2025-11-17 - 15:32

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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 rackeslot4s.osadl.org (updated Mon Nov 17, 2025 00:44:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1032289994138,2cyclictest1088978-21apt-get20:05:020
103228999380,36cyclictest1-21systemd00:25:010
103228999380,36cyclictest1-21systemd00:25:000
1032299993531,3cyclictest978677-21kworker/u8:4+flush-259:019:30:183
1032299993428,4cyclictest2698871-21systemd-journal19:25:003
1032289993330,2cyclictest1192602-21kworker/u8:1+flush-259:022:10:180
1032294993123,7cyclictest1156251-21kworker/u8:1+flush-259:021:35:181
1032289993124,5cyclictest1260042-21latency_hist22:50:020
1032299993023,6cyclictest1141359-21latency_hist20:55:013
1032294993026,3cyclictest1068306-21kworker/u8:1+flush-259:020:50:181
1032289993027,2cyclictest1363214-21kworker/u8:0+flush-259:000:30:010
1032289993027,2cyclictest1363214-21kworker/u8:0+flush-259:000:30:000
1032296992923,4cyclictest1187632-21latency_hist21:40:002
1032289992923,4cyclictest1208624-21diskstats22:00:170
1032294992825,2cyclictest1120297-21kworker/u8:0+flush-259:021:15:201
1032299992723,3cyclictest1311465-21kworker/u8:1+flush-259:000:00:273
1032296992723,2cyclictest1192602-21kworker/u8:1+flush-259:022:05:202
1032296992723,2cyclictest1192602-21kworker/u8:1+flush-259:022:05:202
1032296992721,4cyclictest1222712-21ntpq22:10:222
1032294992723,3cyclictest978677-21kworker/u8:4+events_unbound19:35:271
1032294992723,3cyclictest978677-21kworker/u8:4+events_unbound19:35:271
1032294992723,3cyclictest1151875-21/usr/sbin/munin21:05:161
1032296992620,4cyclictest1301188-21latency_hist23:30:012
1032299992316,6cyclictest1156251-21kworker/u8:1+flush-259:021:30:253
1032294992320,2cyclictest1192602-21kworker/u8:1+events_unbound22:35:021
1032296992216,4cyclictest1228965-21gpgv22:20:002
1032294992219,2cyclictest1156251-21kworker/u8:1+flush-259:021:25:241
1032289992219,2cyclictest1192602-21kworker/u8:1+flush-259:021:45:190
1032289992218,3cyclictest1068306-21kworker/u8:1+flush-259:020:40:190
1032299992117,3cyclictest1187300-21kworker/u8:0+flush-259:022:00:253
1032296992115,4cyclictest1099686-21latency_hist20:15:012
1032296992114,5cyclictest3000063-21rs:main2
1032296992110,2cyclictest1207714-21unixbench_multi21:55:292
1032296992110,2cyclictest1152323-21sed21:05:182
1032294992118,2cyclictest1311465-21kworker/u8:1+flush-259:023:50:161
1032289992117,2cyclictest1208181-21idleruntime-cro22:00:010
1032289992114,5cyclictest1135367-21ntpq20:45:220
1032299992016,3cyclictest1131258-21kworker/u8:4+flush-259:021:05:183
1032299992016,3cyclictest1063076-21kworker/u8:2+flush-259:019:50:003
1032299992015,4cyclictest2698871-21systemd-journal22:20:003
1032294992018,2cyclictest1353084-21kworker/u8:4+events_unbound00:20:211
1032294992018,2cyclictest1353084-21kworker/u8:4+events_unbound00:20:211
1032294992018,2cyclictest1270381-21kworker/u8:2+flush-259:023:30:171
1032294992017,2cyclictest1260079-21kworker/u8:0+events_unbound22:50:171
1032294992016,3cyclictest1332056-21kworker/u8:0+flush-259:000:10:001
1032296991917,1cyclictest1353055-21sh00:19:592
1032296991916,2cyclictest1088983-21latency_hist20:05:012
103229499193,9cyclictest1337621-21idleruntime-cro00:04:591
1032294991916,2cyclictest1342775-21kworker/u8:2+flush-259:000:15:251
1032294991916,2cyclictest1192602-21kworker/u8:1+events_unbound22:05:191
1032294991916,2cyclictest1192602-21kworker/u8:1+events_unbound22:05:181
1032289991915,3cyclictest1089096-21gpgv20:05:010
1032299991816,1cyclictest0-21swapper/322:35:003
1032296991813,4cyclictest1192602-21kworker/u8:1+flush-259:023:05:262
1032296991813,3cyclictest2698871-21systemd-journal20:21:482
1032296991812,4cyclictest1161940-21kworker/u8:3+flush-259:021:50:172
1032294991815,2cyclictest508-21tpm2-abrmd22:05:001
1032294991815,2cyclictest1192602-21kworker/u8:1+flush-259:022:00:001
1032294991815,2cyclictest1192602-21kworker/u8:1+events_unbound23:10:251
1032289991815,2cyclictest1068306-21kworker/u8:1+flush-259:020:15:260
1032289991814,3cyclictest1161940-21kworker/u8:3+flush-259:021:25:000
1032299991715,1cyclictest0-21swapper/321:25:003
1032299991714,1cyclictest0-21swapper/323:54:593
1032299991712,3cyclictest1342755-21latency_hist00:10:003
103229699171,9cyclictest1368540-21idleruntime-cro00:35:012
1032296991713,3cyclictest503-21systemd-logind00:00:012
1032296991711,4cyclictest1249763-21latency_hist22:40:022
1032294991714,2cyclictest3000063-21rs:main1
1032294991714,2cyclictest1161940-21kworker/u8:3+flush-259:021:20:201
1032294991714,2cyclictest1068306-21kworker/u8:1+events_unbound20:25:201
1032294991713,3cyclictest1089644-21/usr/sbin/munin20:05:181
1032294991712,4cyclictest1300331-21ntpq23:25:231
1032294991712,4cyclictest1254930-21latency_hist22:45:011
1032289991714,3cyclictest1068306-21kworker/u8:1+events_unbound20:25:180
1032289991714,2cyclictest1177389-21kworker/u8:2+flush-259:021:35:180
1032299991614,1cyclictest1039968-21kthreadcore19:15:193
1032299991613,2cyclictest1156251-21kworker/u8:1+flush-259:021:10:203
1032299991613,2cyclictest1120297-21kworker/u8:0+flush-259:021:15:293
103229699169,5cyclictest1046875-21ntpq19:20:212
1032296991612,3cyclictest1270381-21kworker/u8:2+events_unbound23:45:222
1032294991614,1cyclictest1074236-21irqcore19:50:181
1032294991614,1cyclictest0-21swapper/122:25:011
1032294991613,1cyclictest0-21swapper/122:20:001
1032294991611,3cyclictest1358460-21/usr/sbin/munin00:25:161
1032294991611,3cyclictest1358460-21/usr/sbin/munin00:25:151
1032294991610,5cyclictest1082923-21ntpq19:55:231
1032289991613,2cyclictest1161431-21unixbench_multi21:10:280
1032289991613,2cyclictest1131258-21kworker/u8:4+flush-259:020:55:160
1032289991610,4cyclictest1068394-21latency_hist19:45:000
1032299991512,2cyclictest1311465-21kworker/u8:1+flush-259:023:44:593
1032296991512,2cyclictest1368756-21kworker/u8:1+flush-259:000:35:202
1032294991512,3cyclictest1177389-21kworker/u8:2+events_unbound21:40:181
1032294991512,2cyclictest1332056-21kworker/u8:0+flush-259:000:15:011
1032289991514,1cyclictest60650irq/133-enp0s29f1:rx-000:15:170
1032289991513,1cyclictest60650irq/133-enp0s29f1:rx-023:40:170
1032289991513,1cyclictest60650irq/133-enp0s29f1:rx-023:05:290
1032289991513,1cyclictest60650irq/133-enp0s29f1:rx-022:22:490
1032289991513,1cyclictest60650irq/133-enp0s29f1:rx-021:30:260
1032289991513,1cyclictest60650irq/133-enp0s29f1:rx-019:50:180
1032289991512,2cyclictest60650irq/133-enp0s29f1:rx-000:35:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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