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2021-01-27 - 08:05

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

Latency plot of system in rack #d, slot #5
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 rackdslot5.osadl.org (updated Thu Feb 06, 2020 10:48:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
56673890354,14cyclictest0-21swapper/007:15:010
56674590332,29cyclictest669980-21dump-pmu-power09:15:002
56674590332,29cyclictest669980-21dump-pmu-power09:15:002
566738903218,8cyclictest609667-21runrttasks08:00:080
566738903112,16cyclictest736161-21expr10:35:020
566738902910,16cyclictest727839-21munin-run10:25:010
566741902816,7cyclictest609512-21sensors08:00:071
56673890282,12cyclictest579074-21perf07:25:000
56673890271,23cyclictest1627-21systemd-logind08:00:000
56673890261,13cyclictest620403-21munin-run08:15:000
566738902611,12cyclictest9-21ksoftirqd/010:05:010
566738902611,12cyclictest9-21ksoftirqd/010:05:000
566745902513,10cyclictest763328-21iostat11:05:122
56674190251,21cyclictest1627-21systemd-logind10:20:011
56673890257,16cyclictest766325-21cpuspeed_turbos11:10:060
56673890248,15cyclictest25650irq/39-mmc111:20:070
56673890248,15cyclictest25650irq/39-mmc111:20:070
56673890245,17cyclictest802228-21munin-run11:55:000
56673890245,17cyclictest715472-21perf10:10:010
56673890245,17cyclictest715472-21perf10:10:010
56673890241,21cyclictest390-21systemd-journal08:25:000
56673890241,11cyclictest835375-21perf12:35:010
56673890241,11cyclictest835375-21perf12:35:010
56673890240,22cyclictest390-21systemd-journal08:44:320
56673890240,22cyclictest1627-21systemd-logind10:50:010
566745902316,5cyclictest1528-21sssd_nss11:55:012
56674190230,20cyclictest1627-21systemd-logind10:10:011
56674190230,20cyclictest1627-21systemd-logind10:10:001
56673890237,3cyclictest0-21swapper/012:35:150
56673890235,11cyclictest695074-21/usr/sbin/munin09:45:150
56673890234,17cyclictest744366-21munin-run10:45:010
56673890234,17cyclictest744366-21munin-run10:45:000
566738902316,5cyclictest792624-21memory11:40:130
566738902316,5cyclictest792624-21memory11:40:130
566738902316,4cyclictest740640-21munin-run10:40:030
566738902316,4cyclictest632882-21/usr/sbin/munin08:30:070
566738902316,4cyclictest632882-21/usr/sbin/munin08:30:060
566738902315,1cyclictest0-21swapper/011:55:060
56673890231,20cyclictest390-21systemd-journal10:55:020
566738902311,2cyclictest0-21swapper/009:50:070
566738902310,10cyclictest819245-21cpu12:15:030
56673890230,9cyclictest5854152gltestperf07:30:080
56674590226,4cyclictest648145-21/usr/sbin/munin08:45:142
566745902217,3cyclictest724656-21users10:20:052
566745902210,3cyclictest7733302cat11:20:002
56674190221,19cyclictest1627-21systemd-logind07:20:011
56674190221,18cyclictest390-21systemd-journal11:35:031
56673890224,16cyclictest655394-21tune2fs08:55:080
56673890223,17cyclictest692577-21fschecks_count09:40:090
56673890222,17cyclictest0-21swapper/011:35:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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