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2021-01-27 - 11:05

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, slot #3
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 -Up99 -i200 -h400 --smi -q
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 rackdslot3.osadl.org (updated Wed Jan 27, 2021 00:46:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1053824160,3sleep30-21swapper/319:05:193
566981500,13rtkit-daemon565-21rtkit-daemon19:08:190
1283911040,1ptp4l401ktimersoftd/322:30:153
11693999184,4cyclictest33-21ksoftirqd/220:10:072
11693999180,7cyclictest33-21ksoftirqd/221:00:052
110692864,19sleep20-21swapper/219:06:572
11693998070,6cyclictest33-21ksoftirqd/219:50:082
11693997763,10cyclictest33-21ksoftirqd/222:55:072
11693997760,11cyclictest33-21ksoftirqd/222:30:062
111802754,59sleep10-21swapper/119:08:261
11693997460,9cyclictest33-21ksoftirqd/219:15:032
11693997460,9cyclictest33-21ksoftirqd/219:15:032
11691997340,3cyclictest9-21ksoftirqd/020:20:000
11691997243,4cyclictest9-21ksoftirqd/023:45:050
11691997240,3cyclictest9-21ksoftirqd/019:35:040
183842700,6sleep116182-21/usr/sbin/munin22:55:141
11691997031,7cyclictest9-21ksoftirqd/022:15:050
83942690,7sleep38392-21df_abs22:00:073
83942690,7sleep38392-21df_abs22:00:073
280632690,5sleep227912-21apt-get23:55:052
211082690,8sleep31169499cyclictest20:05:133
11693996952,10cyclictest33-21ksoftirqd/220:25:082
11691996931,8cyclictest9-21ksoftirqd/021:50:090
11693996855,8cyclictest33-21ksoftirqd/223:35:062
11693996855,8cyclictest33-21ksoftirqd/200:35:082
11691996854,4cyclictest9-21ksoftirqd/023:10:050
11691996839,9cyclictest9-21ksoftirqd/023:50:130
11691996832,5cyclictest9-21ksoftirqd/021:15:220
11691996828,10cyclictest9-21ksoftirqd/020:45:030
11691996630,6cyclictest9-21ksoftirqd/021:45:080
11691996629,6cyclictest9-21ksoftirqd/022:40:060
11691996628,7cyclictest9-21ksoftirqd/022:10:040
11691996627,8cyclictest9-21ksoftirqd/020:00:060
60582650,5sleep16064-21acpi20:30:051
257772650,3sleep1231rcuc/123:50:141
179942650,4sleep017998-21idleruntime22:55:120
11693996448,9cyclictest33-21ksoftirqd/220:45:032
11691996433,8cyclictest9-21ksoftirqd/019:10:150
1169199635,8cyclictest9-21ksoftirqd/000:10:050
11691996331,8cyclictest9-21ksoftirqd/023:55:020
11691996331,4cyclictest9-21ksoftirqd/022:05:030
11691996331,4cyclictest9-21ksoftirqd/022:05:030
11691996328,6cyclictest9-21ksoftirqd/022:35:210
11691996328,6cyclictest9-21ksoftirqd/019:50:120
128391620,2ptp4l0-21swapper/321:47:393
11691996230,4cyclictest9-21ksoftirqd/019:45:080
11691996229,6cyclictest9-21ksoftirqd/019:40:060
239812610,3sleep323961-21apt-get19:25:053
11691996131,8cyclictest9-21ksoftirqd/023:05:020
11691996129,4cyclictest9-21ksoftirqd/019:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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