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2026-05-05 - 09:19

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 Tue May 05, 2026 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
638341994134,5cyclictest700275-21latency_hist20:10:011
638341994036,3cyclictest939366-21kworker/u8:1+events_unbound00:26:231
638341994036,3cyclictest939366-21kworker/u8:1+events_unbound00:26:221
638341993832,3cyclictest830050-21kworker/u8:1+flush-259:022:30:161
638341993732,3cyclictest763984-21kworker/u8:1+flush-259:021:35:241
638344993327,4cyclictest939373-21cp00:00:002
638339993329,3cyclictest252-21systemd-journal20:56:210
638341993229,2cyclictest939366-21kworker/u8:1+flush-259:000:35:241
638341993225,5cyclictest870594-21ntpq22:50:241
638339993228,3cyclictest851074-21apt-get22:35:100
638344993024,4cyclictest252-21systemd-journal00:30:212
638339993024,4cyclictest741289-21ntpq20:45:220
638341992925,3cyclictest793405-21kworker/u8:3+flush-259:022:05:221
638341992923,4cyclictest793978-21apt-get21:40:121
638344992824,3cyclictest939366-21kworker/u8:1+flush-259:000:35:152
638341992825,2cyclictest928868-21kworker/u8:0+flush-259:023:55:201
638341992825,2cyclictest685045-21kworker/u8:1+events_unbound20:00:251
638341992824,3cyclictest928868-21kworker/u8:0+events_unbound00:00:141
638341992824,3cyclictest830050-21kworker/u8:1+events_unbound23:05:251
638341992824,3cyclictest793405-21kworker/u8:3+flush-259:022:00:001
638341992822,4cyclictest787658-21ntpq21:30:211
638349992722,4cyclictest882276-21gpgv23:05:013
638344992720,5cyclictest767057-21ntpq21:10:212
638341992723,3cyclictest939366-21kworker/u8:1+events_unbound00:34:211
638341992723,3cyclictest892513-21kworker/u8:4+events_unbound23:34:231
638341992723,3cyclictest763984-21kworker/u8:1+flush-259:021:20:211
638341992723,2cyclictest669540-21kworker/u8:2+events_unbound20:15:231
638341992721,4cyclictest949960-21/usr/sbin/munin00:10:131
638339992722,4cyclictest861375-21apt-get22:45:110
638341992622,3cyclictest944853-21apt-get00:05:161
638341992622,3cyclictest830050-21kworker/u8:1+flush-259:022:22:211
638341992622,3cyclictest746920-21kworker/u8:2+events_unbound21:10:151
638341992622,3cyclictest685045-21kworker/u8:1+events_unbound20:13:221
638341992620,4cyclictest861120-21latency_hist22:45:011
638339992623,2cyclictest861342-21kworker/u8:3+events_unbound23:00:010
638344992519,4cyclictest252-21systemd-journal22:37:062
638341992523,1cyclictest830050-21kworker/u8:1+events_unbound22:55:121
638341992522,2cyclictest850836-21kworker/u8:0+flush-259:022:35:211
638339992521,3cyclictest773354-21apt-get21:20:110
638339992519,4cyclictest975764-21apt-get00:35:120
638344992419,3cyclictest871436-21kworker/u8:2+flush-259:023:05:182
638341992421,2cyclictest763984-21kworker/u8:1+events_unbound21:51:481
638341992421,2cyclictest711308-21kworker/u8:3+events_unbound21:06:391
638341992418,4cyclictest252-21systemd-journal23:11:211
638339992419,4cyclictest747301-21latency_hist20:55:010
638349992320,2cyclictest674748-21apt-get19:45:113
638349992320,2cyclictest674748-21apt-get19:45:103
638349992319,3cyclictest710770-21gpgv20:20:013
638349992318,4cyclictest928868-21kworker/u8:0+flush-259:000:00:003
638349992316,5cyclictest773091-21latency_hist21:20:003
638344992317,4cyclictest840268-21base6422:25:002
638341992320,2cyclictest799135-21/usr/sbin/munin21:45:191
638339992319,2cyclictest892513-21kworker/u8:4+flush-259:023:30:240
638349992219,2cyclictest2971-21cron00:25:013
638349992217,4cyclictest699381-21ntpq20:05:213
638349992217,3cyclictest893158-21apt-get23:15:113
638344992219,2cyclictest618055-21kworker/u8:1+flush-259:019:10:162
638344992216,4cyclictest866277-21latency_hist22:50:012
638341992219,2cyclictest871436-21kworker/u8:2+events_unbound23:46:211
638341992219,2cyclictest669540-21kworker/u8:2+events_unbound19:40:221
638341992219,2cyclictest653827-21kworker/u8:0+flush-259:019:55:121
638341992219,2cyclictest618055-21kworker/u8:1+events_unbound19:33:231
638341992218,3cyclictest830047-21apt-get22:15:101
638341992218,3cyclictest690175-21kworker/u8:4+events_unbound20:28:231
638339992218,3cyclictest746920-21kworker/u8:2+flush-259:021:00:200
638341992118,2cyclictest763984-21kworker/u8:1+events_unbound21:28:211
638341992118,2cyclictest757648-21kworker/u8:0+flush-259:021:15:241
638341992117,3cyclictest892513-21kworker/u8:4+events_unbound23:38:241
638341992117,2cyclictest898319-21kworker/u8:0+events_unbound23:20:211
638339992117,3cyclictest763984-21kworker/u8:1+flush-259:022:00:260
638339992117,3cyclictest690175-21kworker/u8:4+flush-259:020:30:210
638349992016,3cyclictest648382-21kworker/u8:2+flush-259:019:25:243
638344992017,2cyclictest669540-21kworker/u8:2+events_unbound19:45:002
638344992015,4cyclictest876812-21/usr/sbin/munin23:00:202
638341992017,2cyclictest892513-21kworker/u8:4+events_unbound00:15:231
638341992016,3cyclictest653827-21kworker/u8:0+events_unbound19:35:221
638341992014,4cyclictest881914-21gpgv23:05:011
638349991915,3cyclictest892890-21gpgv23:15:023
638349991915,3cyclictest830050-21kworker/u8:1+flush-259:022:50:263
638349991913,4cyclictest829784-21latency_hist22:15:003
638349991913,4cyclictest673568-21ntpq19:40:203
638344991916,2cyclictest845672-21sh22:30:002
638344991912,5cyclictest725707-21ntpq20:30:202
638341991915,3cyclictest618055-21kworker/u8:1+events_unbound19:14:221
638339991915,3cyclictest928868-21kworker/u8:0+flush-259:000:15:170
638349991815,2cyclictest919378-21irqcore23:40:153
638349991813,3cyclictest252-21systemd-journal20:29:203
638344991815,2cyclictest850813-21sh22:35:002
638344991814,3cyclictest819175-21kworker/u8:2+flush-259:022:40:142
638344991813,3cyclictest763984-21kworker/u8:1+flush-259:021:20:162
638344991812,4cyclictest943670-21ntpq00:00:212
638341991815,2cyclictest711308-21kworker/u8:3+flush-259:020:40:211
638341991815,2cyclictest618055-21kworker/u8:1+events_unbound19:15:161
638341991814,3cyclictest830050-21kworker/u8:1+flush-259:023:15:191
638341991814,3cyclictest618055-21kworker/u8:1+events_unbound19:26:231
638339991812,5cyclictest809645-21diskstats21:55:140
638339991811,4cyclictest252-21systemd-journal23:50:210
638349991713,2cyclictest793405-21kworker/u8:3+flush-259:021:40:173
638344991713,3cyclictest809484-21apt-get21:55:112
638344991711,4cyclictest509-21rs:main2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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