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2024-09-08 - 09:32
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack9slot2.osadl.org (updated Sun Sep 08, 2024 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
261892362262,64sleep30-21swapper/33
268512253211,27sleep20-21swapper/22
268302252177,60sleep10-21swapper/11
266152252213,26sleep00-21swapper/00
1510521430,1sleep10-21swapper/11
196272640,1sleep30-21swapper/33
259842630,2sleep00-21swapper/00
162682450,2sleep116273-21needreboot1
323812300,2sleep00-21swapper/00
172152290,4sleep12711699cyclictest1
279022260,1sleep30-21swapper/33
2712199242,19cyclictest17279-21grep2
2712199240,17cyclictest13601-21apt-key2
2711699240,23cyclictest15775-21kworker/1:01
2712699237,3cyclictest145652needreboot3
27121992321,1cyclictest0-21swapper/22
2712199230,15cyclictest15949-21users2
2712199230,10cyclictest31594-21cron2
2711199231,8cyclictest505-21dbus-daemon0
2712199224,16cyclictest24070-21cat2
2712199224,16cyclictest16671-21cat2
27121992217,3cyclictest0-21swapper/22
27121992215,4cyclictest30670-21seq2
2712199220,4cyclictest3623-21head2
2712199220,16cyclictest10287-1kworker/2:1H2
2711199222,17cyclictest32670-21sh0
27111992218,2cyclictest17553-21perf0
27111992211,7cyclictest10520-21lldpd0
2712699211,17cyclictest30407-21cmp3
2712199213,16cyclictest28-21ksoftirqd/22
2712199212,17cyclictest28716-21latency_hist2
2712199212,16cyclictest0-21swapper/22
27121992116,3cyclictest30173-21munin-run2
27121992115,4cyclictest6321-21awk2
27121992114,4cyclictest27354-21diskstats2
2712199211,3cyclictest31466-21memory2
2712199211,3cyclictest31466-21memory2
2712199211,2cyclictest5171-21munin-run2
2712199211,2cyclictest0-21swapper/22
2712199211,18cyclictest31269-21munin-run2
2712199211,18cyclictest29274-21munin-run2
2712199210,4cyclictest31876-21find2
27116992115,4cyclictest9105-21seq1
27116992115,4cyclictest30594-21seq1
27116992115,4cyclictest28371-21seq1
27116992114,4cyclictest505-21dbus-daemon1
2711199213,11cyclictest11450-21chrt0
27111992115,4cyclictest14675-21sed0
27111992114,4cyclictest505-21dbus-daemon0
27111992114,4cyclictest27024-21ls0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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