You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-05-03 - 01:25
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 20 highest latencies:
System rackeslot5.osadl.org (updated Fri May 02, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19943992927,2cyclictest609-21dbus-daemon12:20:013
19943992927,1cyclictest0-21swapper/311:35:003
1994399290,29cyclictest0-21swapper/312:35:173
1993799290,28cyclictest26937-21munin-run07:25:011
1993799290,28cyclictest0-21swapper/112:35:161
1993799290,28cyclictest0-21swapper/107:40:121
1993799290,1cyclictest16328-21apt-get09:20:121
1993699290,28cyclictest22475-21apt-get07:15:120
1993699290,1cyclictest0-21swapper/008:50:000
1993699290,1cyclictest0-21swapper/008:50:000
1993699290,1cyclictest0-21swapper/008:30:120
19943992828,0cyclictest32456-21apt-get08:45:123
19943992828,0cyclictest32456-21apt-get08:45:123
19943992828,0cyclictest0-21swapper/310:15:153
19943992827,1cyclictest13983-21apt-get09:15:113
1994399280,28cyclictest26926-21perf07:25:013
1994399280,28cyclictest0-21swapper/311:40:153
1994399280,28cyclictest0-21swapper/307:40:123
1994399280,27cyclictest0-21swapper/307:15:133
1994399280,0cyclictest0-21swapper/310:40:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional