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2025-12-10 - 13:32

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.

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 Wed Dec 10, 2025 00:39:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
885046995751,3cyclictest0-21swapper/121:19:291
885046995343,7cyclictest912008-21cron20:40:001
885046995343,7cyclictest912008-21cron20:40:001
88504699533,39cyclictest1006440-21ssh22:59:241
885045995124,24cyclictest0-21swapper/000:19:300
885046995041,5cyclictest1011297-21cron23:05:011
885045995026,21cyclictest421-21avahi-daemon23:10:300
885045994939,5cyclictest0-21swapper/019:40:010
885045994831,14cyclictest0-21swapper/021:05:010
885045994811,14cyclictest1083770-21ssh00:39:220
885045994728,13cyclictest0-21swapper/020:40:010
885045994728,13cyclictest0-21swapper/020:40:010
885045994724,19cyclictest0-21swapper/023:10:010
885045994724,19cyclictest0-21swapper/021:34:320
885045994724,19cyclictest0-21swapper/021:34:320
885045994720,24cyclictest993383-21sshd22:43:390
885045994720,24cyclictest0-21swapper/021:40:010
885047994537,5cyclictest929150-21sendmail21:20:012
885046994537,5cyclictest0-21swapper/122:05:011
885045994534,5cyclictest151ktimers/020:29:280
885045994530,12cyclictest422-21dbus-daemon00:30:010
885047994438,3cyclictest0-21swapper/222:45:012
885046994435,6cyclictest421-21avahi-daemon21:30:011
885046994435,3cyclictest0-21swapper/123:29:221
885046994434,7cyclictest422-21dbus-daemon23:40:011
885046994434,7cyclictest422-21dbus-daemon23:40:011
885046994433,5cyclictest0-21swapper/123:14:261
885045994436,5cyclictest1-21systemd19:10:020
885045994435,6cyclictest151ktimers/000:04:300
885047994337,3cyclictest0-21swapper/221:40:012
885047994334,6cyclictest1055298-21cups-browsed00:39:402
88504599433,7cyclictest902454-21ntpq20:09:240
88504599432,6cyclictest896416-21ntpq19:49:210
885045994318,22cyclictest924841-21grep21:14:350
88504599431,11cyclictest885680-21/usr/sbin/munin19:14:160
885047994235,3cyclictest0-21swapper/221:00:012
885047994234,5cyclictest422-21dbus-daemon21:25:022
885047994232,4cyclictest0-21swapper/222:24:282
885046994237,2cyclictest0-21swapper/119:40:011
885046994232,4cyclictest0-21swapper/122:49:211
88504599429,2cyclictest0-21swapper/019:19:230
885045994234,4cyclictest0-21swapper/023:49:260
885045994230,9cyclictest1073841-21cron00:25:010
88504599422,15cyclictest1055152-21sendmail00:00:010
885045994218,21cyclictest0-21swapper/021:45:010
885045994211,2cyclictest0-21swapper/020:34:240
885045994211,2cyclictest0-21swapper/020:34:240
885045994211,26cyclictest978870-21ssh22:24:240
885047994135,3cyclictest0-21swapper/200:00:012
88504799412,29cyclictest998512-21ssh22:49:252
885046994133,5cyclictest1066368-21latency_hist00:15:021
885046994133,3cyclictest0-21swapper/100:04:241
885046994129,9cyclictest940818-21/usr/sbin/munin21:35:011
885046994129,9cyclictest940818-21/usr/sbin/munin21:35:011
88504599416,29cyclictest951661-21ssh21:49:240
88504599414,11cyclictest437-21mta-sts-daemon00:14:240
88504599413,9cyclictest1026093-21ssh23:24:250
88504599413,10cyclictest891969-21ntpq19:34:230
88504599412,7cyclictest905429-21ntpq20:19:260
88504599412,7cyclictest1002418-21ntpq22:54:220
88504599412,6cyclictest890451-21ntpq19:29:220
885045994124,13cyclictest0-21swapper/022:19:250
885045994124,13cyclictest0-21swapper/022:19:250
88504599412,13cyclictest982816-21ntpq22:29:240
88504599411,7cyclictest920394-21ntpq21:09:200
88504599411,15cyclictest1080261-21ntpq00:34:240
88504599411,11cyclictest897970-21ntpq19:54:250
88504599411,11cyclictest3227706-21cupsd21:21:410
88504599411,10cyclictest1035813-21ssh23:36:060
88504599411,10cyclictest1035813-21ssh23:36:060
885045994110,2cyclictest0-21swapper/020:14:360
885047994032,5cyclictest1081064-21grep00:35:012
885047994031,5cyclictest0-21swapper/221:14:222
885046994032,5cyclictest0-21swapper/100:00:021
885046994025,3cyclictest171rcu_preempt20:19:161
88504599403,8cyclictest928207-21ntpq21:19:240
885045994035,2cyclictest0-21swapper/023:54:260
88504599402,15cyclictest1042128-21ssh23:44:210
88504599402,15cyclictest1042128-21ssh23:44:210
88504599402,12cyclictest986822-21ssh22:34:270
88504599401,9cyclictest955523-21ntpq21:54:230
88504599401,9cyclictest901466-21unixbench_singl20:04:360
885045994017,20cyclictest987877-21kworker/u8:0-xprtiod22:39:260
88504599401,5cyclictest1034160-21ntpq23:34:250
885045994011,2cyclictest0-21swapper/019:23:340
88504599401,10cyclictest1028284-21ssh23:27:090
88504599400,8cyclictest1019839-21ssh23:16:040
885047993931,5cyclictest422-21dbus-daemon23:35:022
885046993931,5cyclictest0-21swapper/120:49:261
885046993930,5cyclictest955-21mta-sts-daemon00:30:171
88504699391,28cyclictest924205-21ssh21:14:231
88504599391,9cyclictest1060999-21ssh00:08:470
88504599391,9cyclictest1010233-21memory23:04:180
88504599391,8cyclictest969279-21ssh22:12:010
885045993918,17cyclictest12450irq/32-eth021:29:230
885045993911,2cyclictest0-21swapper/020:24:240
88504599391,11cyclictest961174-21ssh22:01:210
88504599391,11cyclictest895034-21ntpq19:44:250
88504599391,11cyclictest895034-21ntpq19:44:250
88504599391,10cyclictest917449-21ntpq20:59:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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