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2023-06-06 - 17:53

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 10 highest latencies:
System rackbslot4.osadl.org (updated Tue Jun 06, 2023 12:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32549996019,36cyclictest29892-21ntp_kernel_pll_10:19:513
3254999584,49cyclictest0-21swapper/309:50:243
3253599575,46cyclictest0-21swapper/110:58:431
3253599574,8cyclictest0-21swapper/109:34:451
32535995711,41cyclictest28290-21grep11:04:431
3253199577,27cyclictest25071-21/usr/sbin/munin07:19:570
3223325711,16sleep10-21swapper/106:13:481
3254999565,7cyclictest0-21swapper/309:22:053
3253199567,43cyclictest19206-21proc_pri09:14:550
3253199565,8cyclictest0-21swapper/011:19:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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