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2021-01-23 - 05:38

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

Latency plot of system in rack #d, slot #8
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 rackdslot8.osadl.org (updated Thu Feb 06, 2020 10:49:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121028690315,23cyclictest1284161-21munin-run08:40:011
121028690315,23cyclictest1284161-21munin-run08:40:001
121028590315,13cyclictest1428017-21perf11:35:010
1210286902514,6cyclictest1424479-21ptp4l-jitter11:30:031
121028690251,21cyclictest393-21systemd-journal12:40:011
121028690251,21cyclictest1612-21systemd-logind07:40:001
1210285902419,3cyclictest1358156-21munin-run10:10:010
121028590241,2cyclictest111rcu_preempt11:15:000
121028590241,11cyclictest1304765-21latency_hist09:05:010
1210287902319,2cyclictest0-21swapper/211:20:012
1210286902313,2cyclictest1382833-21taskset10:40:001
121028690231,19cyclictest393-21systemd-journal12:20:021
121028690231,15cyclictest1432254-21/usr/sbin/munin11:40:101
121028590230,11cyclictest1214348-21perf07:15:010
1210287902214,4cyclictest1464003-21netstat12:15:142
121028690226,3cyclictest14186252missed_timers11:20:151
121028690226,3cyclictest14186252missed_timers11:20:141
1210286902211,9cyclictest21-21ksoftirqd/108:55:041
121028590220,20cyclictest393-21systemd-journal09:00:020
121028590220,20cyclictest393-21systemd-journal07:57:470
121028590220,19cyclictest393-21systemd-journal09:40:110
1210287902116,3cyclictest1324380-21proc_pri09:25:172
1210287902115,4cyclictest1393769-21irqstats10:50:152
1210287902115,4cyclictest1338635-21sed09:45:052
1210287902115,4cyclictest1338635-21sed09:45:042
1210287902113,5cyclictest1304191-21grep09:00:212
121028690219,7cyclictest1509-21runrttasks11:49:331
1210286902116,3cyclictest21-21ksoftirqd/110:00:011
1210286902116,3cyclictest1274246-21grep08:25:111
1210286902116,3cyclictest1247232-21cut07:55:011
1210286902115,4cyclictest21-21ksoftirqd/111:15:011
1210286902115,4cyclictest1264491-21head08:15:041
1210286902114,4cyclictest1272077-21acpi08:25:021
1210286902113,4cyclictest1367705-21df_abs10:20:051
121028690211,2cyclictest111rcu_preempt10:25:181
121028690211,18cyclictest393-21systemd-journal09:44:441
1210286902110,7cyclictest1308827-21diskmemload09:30:091
121028690210,6cyclictest21-21ksoftirqd/111:25:081
121028590219,4cyclictest1431684-21unixbench_singl11:35:220
121028590219,4cyclictest1431684-21unixbench_singl11:35:210
121028590211,9cyclictest1391025-21munin-run10:50:010
1210285902115,4cyclictest1275645-21sshd08:26:360
121028590211,10cyclictest1478123-21acpi12:35:030
121028590210,9cyclictest13645972iostat10:15:100
121028590210,19cyclictest393-21systemd-journal10:25:000
121028590210,12cyclictest1465095-21systemd-udevd12:19:560
1210287902014,4cyclictest1274245-21unixbench_singl08:25:112
1210287902014,4cyclictest1229973-21sendmail_mailtr07:30:172
1210287902014,3cyclictest1358597-21open_files10:10:032
1210287902014,3cyclictest1297147-21cpu08:55:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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