You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-06-06 - 05:00

x86 VIA QuadCore L4700 @1200 MHz, Linux 3.18.43-rt46 (Profile)

Latency plot of system in rack #b, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 20 highest latencies:
System rackbslot4.osadl.org (updated Tue Jun 06, 2023 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
466199628,48cyclictest0-21swapper/020:33:270
466199594,49cyclictest0-21swapper/023:28:020
4666995714,38cyclictest15545-21switchtime18:40:161
466199575,7cyclictest0-21swapper/022:32:490
4666995623,27cyclictest6881-21grep21:35:021
466199565,44cyclictest0-21swapper/022:50:290
467799555,44cyclictest0-21swapper/321:50:503
467799555,44cyclictest0-21swapper/321:50:503
467799554,46cyclictest0-21swapper/323:20:223
467799554,10cyclictest0-21swapper/320:36:423
4677995514,36cyclictest20846-21missed_timers18:55:023
466699553,46cyclictest10248-21sed18:25:161
4666995515,33cyclictest24692-21latency22:50:011
466199553,47cyclictest0-21swapper/023:24:350
4677995414,34cyclictest37-21ksoftirqd/323:35:113
4666995419,30cyclictest30702-21/usr/sbin/munin23:00:001
4666995417,31cyclictest23164-21ksmtuned20:21:451
4666995416,32cyclictest637-21runrttasks23:43:391
4666995414,35cyclictest8673-21processes23:15:101
4666995412,36cyclictest550-21NetworkManager22:04:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional