You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-01-15 - 18:48

Intel(R) Atom(TM) Processor E3950 @ 1.60GHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -n -p90 -i200 -h400 -a0-2 -t3 -q done
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rackdslot7.osadl.org (updated Thu Feb 06, 2020 10:49:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3393821903510,8cyclictest3482194-21dnf21:13:092
339381990344,14cyclictest3716693-21perf00:35:010
339381990338,12cyclictest3589371-21cut22:00:020
339382190314,8cyclictest3641458-21if_err_enp3s023:00:152
3393820903117,8cyclictest3498895-40mandb21:21:571
3393819903111,17cyclictest3461884-21perf20:50:020
339382190304,8cyclictest3625004-21cat22:40:142
339382190304,11cyclictest3435877-21cat20:15:142
339382190303,9cyclictest3683008-21sensors23:50:182
339382190298,19cyclictest1630-21systemd-logind20:50:022
339382190295,8cyclictest3394891-21grep19:10:082
339382190294,9cyclictest3618490-21/usr/sbin/munin22:35:042
3393819902910,17cyclictest3486679-21perf21:20:020
339382190285,9cyclictest3443497-21rt-features20:25:122
339382090281,23cyclictest393-21systemd-journal20:00:011
339382090281,23cyclictest393-21systemd-journal20:00:011
339382190275,9cyclictest3617300-21gunzip22:30:222
339382190275,9cyclictest3617300-21gunzip22:30:212
339382190275,8cyclictest3584015-21pmu-power21:50:132
339382190275,8cyclictest3562634-21cpu21:25:092
339382190274,9cyclictest3429368-21sensors20:10:032
339382190274,9cyclictest3429368-21sensors20:10:022
339381990273,12cyclictest3655041-21perf23:20:000
339381990270,13cyclictest3622228-21perf22:40:020
339382190267,16cyclictest3414212-21grep19:45:112
339382190265,9cyclictest3666264-21missed_timers23:30:182
339382190265,8cyclictest3476892-21cat21:05:142
339382190264,8cyclictest3629788-21timerandwakeup22:45:262
339382190264,8cyclictest3403507-21cat19:25:132
339382190264,10cyclictest3695398-21sort00:05:172
339382190263,11cyclictest3677222-21dnf23:45:092
3393820902614,7cyclictest1542-21sssd_nss23:55:071
339381990261,13cyclictest3642735-21munin-run23:05:010
339382090251,21cyclictest393-21systemd-journal20:25:021
339382090251,21cyclictest1630-21systemd-logind00:07:091
339381990251,10cyclictest35815722grep21:50:030
339382190247,14cyclictest3647196-21ps23:10:022
339382190246,8cyclictest3717018-21meminfo00:35:042
339382190243,8cyclictest3420951-21munin-run20:00:012
339382190243,8cyclictest3420951-21munin-run20:00:012
339382090241,21cyclictest393-21systemd-journal21:38:531
339382090241,20cyclictest3671444-21dump-pmu-power23:40:011
339382090241,20cyclictest3671444-21dump-pmu-power23:40:001
339382090240,22cyclictest393-21systemd-journal23:11:491
339381990249,12cyclictest3704423-21/usr/sbin/munin00:20:100
339382190239,11cyclictest3580325-21ptp4l21:45:172
339382190239,11cyclictest3580325-21ptp4l21:45:162
339382190238,12cyclictest3574820-21irqstats21:40:102
339382190238,12cyclictest3574820-21irqstats21:40:092
339382190238,12cyclictest3464034-21fw_conntrack20:50:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional