You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-15 - 00:38

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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 50 highest latencies:
System rackeslot4s.osadl.org (updated Tue Apr 14, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
77892994439,3cyclictest191727-21kworker/u8:3+flush-259:009:10:002
77887994440,2cyclictest160781-21fwupd08:30:020
77887994329,12cyclictest176671-21diskstats08:45:140
77887994329,12cyclictest176671-21diskstats08:45:130
77892994234,6cyclictest124216-21latency_hist07:55:012
77892994135,4cyclictest252-21systemd-journal09:00:002
77897993530,3cyclictest237229-21kworker/u8:1+flush-259:012:05:013
77889993531,2cyclictest310898-21kworker/u8:3+events_unbound11:10:001
77887993520,3cyclictest252-21systemd-journal11:39:080
77897993429,3cyclictest222776-21kworker/u8:0+flush-259:009:50:013
77887993428,4cyclictest419069-21ntpq12:35:220
77887993327,4cyclictest331497-21latency_hist11:15:010
77889993126,3cyclictest252-21systemd-journal09:46:081
77889993124,5cyclictest252-21systemd-journal08:30:001
77887993124,5cyclictest226998-21ntpq09:30:200
7788799311,29cyclictest1-21systemd11:59:080
7788799310,30cyclictest1-21systemd08:37:070
77892993026,3cyclictest39746-21kworker/u8:3+flush-259:007:25:172
77892993025,3cyclictest310898-21kworker/u8:3+flush-259:011:05:132
77892993025,3cyclictest237229-21kworker/u8:1+events_unbound10:40:012
77889993024,4cyclictest185613-21ntpq08:50:211
77889992821,5cyclictest419983-21latency_hist12:40:011
77892992722,3cyclictest39747-21kworker/u8:4+flush-259:007:55:222
77889992723,3cyclictest259188-21apt-get10:05:121
77889992721,4cyclictest155609-21latency_hist08:25:011
77887992720,5cyclictest134541-21latency_hist08:05:000
77892992622,3cyclictest331516-21kworker/u8:0+events_unbound11:35:022
77892992620,4cyclictest252-21systemd-journal08:14:082
77892992619,5cyclictest346587-21ntpq11:25:242
77889992623,2cyclictest222776-21kworker/u8:0+flush-259:009:55:251
77897992519,4cyclictest280003-21latency_hist10:25:003
77897992519,4cyclictest150476-21latency_hist08:20:003
77897992519,4cyclictest118256-21ntpq07:45:223
77892992521,3cyclictest237229-21kworker/u8:1+flush-259:010:05:142
77892992520,4cyclictest171058-21kworker/u8:1+flush-259:008:45:002
77889992521,3cyclictest237229-21kworker/u8:1+flush-259:009:50:261
77889992519,4cyclictest252-21systemd-journal12:18:071
77897992420,3cyclictest331516-21kworker/u8:0+flush-259:011:30:213
77897992420,3cyclictest237229-21kworker/u8:1+flush-259:010:50:163
77897992420,3cyclictest129623-21apt-get08:00:123
77892992420,3cyclictest237229-21kworker/u8:1+flush-259:010:50:192
77892992419,4cyclictest222776-21kworker/u8:0+flush-259:009:44:232
77892992419,3cyclictest248656-21kworker/u8:2+flush-259:010:10:222
77892992419,3cyclictest237229-21kworker/u8:1+flush-259:011:40:252
77889992418,4cyclictest509-21rs:main1
77887992420,3cyclictest310898-21kworker/u8:3+flush-259:011:20:140
77887992418,4cyclictest252-21systemd-journal07:25:000
77897992319,3cyclictest252-21systemd-journal07:39:013
77897992317,4cyclictest248604-21awk09:55:003
77892992319,3cyclictest237229-21kworker/u8:1+events_unbound12:10:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional