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2022-05-28 - 15:56

x86 Intel Pentium @133 MHz, 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 Sat May 28, 2022 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
210369938495,0cyclictest24286-21runrttasks07:26:000
210369937745,0cyclictest17190-21ssh10:29:010
210369936276,0cyclictest25191-21chrt11:25:360
210369935739,0cyclictest20133-21munin-run10:50:110
210369935539,0cyclictest28435-21apt-get11:45:120
210369935029,0cyclictest32564-21sendmail_mailqu08:01:330
210369934937,0cyclictest9767-21munin-run12:40:190
210369934837,0cyclictest4652-21sendmail_mailtr12:20:250
210369934829,0cyclictest1988-21cat12:10:200
210369934828,0cyclictest27774-21awk07:41:030
210369934735,0cyclictest907-21sendmail-mta08:10:030
210369934642,0cyclictest23612-21missed_timers07:21:350
210369934637,0cyclictest32073-21ssh12:00:130
210369934535,0cyclictest2955-21timerwakeupswit12:12:320
210369934529,0cyclictest17468-21sh10:30:350
210369934428,0cyclictest18530-21kworker/u2:011:20:400
2103699344109,0cyclictest2240-21syslogd07:55:100
210369934327,0cyclictest23706-21sort11:15:240
210369934240,0cyclictest11142-21mailstats09:45:270
210369934239,0cyclictest27396-21latency_hist11:40:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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