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2023-02-06 - 14:39

x86 Intel Celeron N3350 @1100 MHz, Linux 5.15.32-rt39 (Profile)

Latency plot of system in rack #6, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by a total of 26404 SMIs that occured during the measurement.
Command line: cyclictest -l100000000 -m -Sp99 -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 20 highest latencies:
System rack6slot4.osadl.org (updated Mon Feb 06, 2023 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1968699330326,2cyclictest11853-21kworker/1:211:35:531
1968599324322,1cyclictest0-21swapper/011:35:530
1968599324319,3cyclictest28434-21kworker/0:209:51:570
1968699323310,11cyclictest1276-21kworker/1:010:02:501
1968699322319,2cyclictest5775-21kworker/1:110:11:481
1968699321318,2cyclictest32106-21kworker/1:109:33:231
1968699320310,9cyclictest3519-21kworker/1:010:34:561
1968599320315,3cyclictest28641-21diskmemload09:33:240
1968699319316,2cyclictest27321-21kworker/1:112:10:481
1968699319316,2cyclictest16675-21kworker/1:209:45:221
1968599318313,3cyclictest28641-21diskmemload09:45:220
1968599318313,3cyclictest16469-21kworker/0:212:32:590
1968699317314,2cyclictest16675-21kworker/1:209:40:181
1968699317314,2cyclictest13340-21kworker/1:011:09:291
1968699317314,2cyclictest11314-21kworker/1:208:40:181
1968699317313,2cyclictest20159-21kworker/1:108:50:221
1968599317315,1cyclictest0-21swapper/010:11:470
1968699316312,2cyclictest8329-21kworker/1:011:49:131
1968599316311,4cyclictest21814-21/usr/sbin/munin09:40:180
1968599316310,4cyclictest21926-21kworker/0:111:41:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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