You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-10 - 08:29
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 rackbslot7.osadl.org (updated Wed Sep 10, 2025 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265029911765,45cyclictest27924-21cpuspeed21:48:060
265029911765,45cyclictest27924-21cpuspeed21:48:060
265029911726,54cyclictest0-21swapper/023:02:070
265029911250,54cyclictest0-21swapper/023:01:540
265029911250,54cyclictest0-21swapper/023:01:540
265029910855,46cyclictest23100-21rm00:27:170
265029910855,46cyclictest23100-21rm00:27:170
265029910650,48cyclictest0-21swapper/020:26:560
265029910649,49cyclictest0-21swapper/022:12:350
265089910566,32cyclictest0-21swapper/119:47:321
26502991052,32cyclictest19263-21switchtime22:27:330
26502991043,22cyclictest5153-21/usr/sbin/munin21:07:310
265029910243,52cyclictest0-21swapper/022:53:010
26502991013,29cyclictest20984-21fschecks_time23:27:170
265029910047,45cyclictest0-21swapper/021:02:200
26502999946,45cyclictest0-21swapper/000:12:310
26502999945,47cyclictest0-21swapper/020:51:560
26502999945,47cyclictest0-21swapper/020:51:560
2650299993,34cyclictest32042-21cron20:56:530
26508999859,31cyclictest0-21swapper/123:27:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional