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2022-10-03 - 10:15

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 Mon Oct 03, 2022 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15800997211,56cyclictest23784-21idleruntime-cro21:45:063
15777997125,40cyclictest27935-21diskstats21:55:241
1580099704,7cyclictest15545-21/usr/sbin/munin21:20:373
1580099704,7cyclictest15545-21/usr/sbin/munin21:20:373
1580099683,58cyclictest0-21swapper/321:45:513
1580099663,56cyclictest18175-21latency_hist21:30:073
1580099663,56cyclictest18175-21latency_hist21:30:073
1580099646,51cyclictest0-21swapper/317:05:433
1580099643,8cyclictest0-21swapper/321:08:313
1580099643,55cyclictest0-21swapper/321:38:003
1580099643,10cyclictest0-21swapper/321:35:063
1580099623,53cyclictest0-21swapper/321:19:053
1580099613,52cyclictest0-21swapper/321:13:263
1580099603,32cyclictest0-21swapper/321:55:083
15777996017,37cyclictest0-21swapper/121:50:201
15777996014,40cyclictest543-21smartd18:12:241
15777996014,40cyclictest543-21smartd18:12:241
1580099592,8cyclictest28053-21fschecks_time21:55:253
1580099583,49cyclictest0-21swapper/321:03:563
1580099573,34cyclictest0-21swapper/320:56:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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