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2019-07-24 - 00:34

Pentium 75 - 200, Linux 4.18.7-rt5 (Profile)

Latency plot of system in rack #3, slot #5
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l25000000 -m -n -a0 -t1 -p99 -i800 -h1000 -q
Total number of samples: 25 million
Resolution of latency scale: reduced 
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack3slot5.osadl.org (updated Tue Jul 23, 2019 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92039942380,0cyclictest4922-21ssh09:16:240
92039941678,0cyclictest2433-21aten_r3power_cu09:05:200
92039941589,0cyclictest0-21swapper08:25:070
92039941435,0cyclictest13767-21awk09:56:290
92039941031,0cyclictest20080-21latency_hist08:00:080
92039940827,0cyclictest3425-21ssh12:10:390
92039940397,0cyclictest2323-21snmpd07:45:330
92039939846,0cyclictest12199-21munin-node09:50:380
92039939844,0cyclictest31310-21which11:40:440
92039939770,0cyclictest0-21swapper08:02:300
92039939732,0cyclictest16654-21date10:10:170
92039939537,0cyclictest31336-21cron08:50:070
92039939490,0cyclictest2323-21snmpd10:53:010
92039939437,0cyclictest17968-21apt-get10:15:530
92039939385,0cyclictest860-21munin-node11:57:070
92039939234,0cyclictest12040-21kworker/u2:010:00:590
92039939080,0cyclictest2330-21sshd10:41:310
92039939041,0cyclictest24286-21cat08:17:010
92039939033,0cyclictest32473-21cron08:55:080
92039938977,0cyclictest2240-21syslogd10:15:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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