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2023-06-04 - 23:52

x86 Intel Core i9-9900K @3600 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #4
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 -Sp99 -i200 -h400 -q
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 rack0slot4.osadl.org (updated Sun Jun 04, 2023 00:45:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34962572385368,9sleep80-21swapper/819:09:5914
34944412350343,4sleep110-21swapper/1119:05:303
34962402347330,8sleep140-21swapper/1419:09:496
34961562346326,9sleep120-21swapper/1219:08:594
34960082346328,10sleep40-21swapper/419:06:5810
34961232345327,10sleep150-21swapper/1519:08:307
34961742344328,8sleep100-21swapper/1019:09:132
34961492343325,9sleep50-21swapper/519:08:5211
34926482343307,27sleep10-21swapper/119:05:031
34923562343302,11sleep00-21swapper/019:05:020
34961502341320,12sleep60-21swapper/619:08:5412
34961402341325,8sleep130-21swapper/1319:08:445
34959592341320,11sleep90-21swapper/919:06:1515
34959512339319,11sleep70-21swapper/719:06:1313
34926502336317,10sleep30-21swapper/319:05:059
34960472332311,11sleep20-21swapper/219:07:298
34966469912038,41cyclictest666-21systemd-journal19:27:5212
34966469910240,20cyclictest666-21systemd-journal19:58:2812
34966469910038,42cyclictest666-21systemd-journal21:09:3412
349664699840,42cyclictest3810235-21/usr/sbin/munin23:55:2712
3496646998017,21cyclictest0-21swapper/619:15:3612
3496643997311,20cyclictest3462030-21kworker/5:022:06:0611
349664699620,21cyclictest553-21jbd2/nvme0n1p2-23:00:0712
349664699620,20cyclictest0-21swapper/623:45:4212
349664699620,20cyclictest0-21swapper/623:45:4212
349664699620,20cyclictest0-21swapper/622:14:3612
3496646996019,41cyclictest3643360-21ssh21:41:5212
3496646995917,42cyclictest0-21swapper/623:21:0212
3496646995917,42cyclictest0-21swapper/621:00:4612
3496646995817,41cyclictest0-21swapper/620:14:1412
3496646995814,24cyclictest0-21swapper/623:39:5712
3496646995716,41cyclictest3859736-21ssh00:33:5712
3496646995413,21cyclictest666-21systemd-journal21:19:3212
3496646995413,21cyclictest0-21swapper/621:46:4512
3496646995413,21cyclictest0-21swapper/600:20:2012
3496646995211,41cyclictest0-21swapper/623:18:0812
3496646995211,21cyclictest0-21swapper/623:13:4812
349664699498,21cyclictest0-21swapper/623:08:0512
349664699498,21cyclictest0-21swapper/622:15:0212
349664699476,41cyclictest0-21swapper/623:34:5712
349664699476,21cyclictest0-21swapper/622:08:4012
349664699476,21cyclictest0-21swapper/622:03:2412
3496646994714,21cyclictest0-21swapper/622:38:4612
349664699465,0cyclictest0-21swapper/623:40:3212
349664699465,0cyclictest0-21swapper/623:40:3212
349664699451,0cyclictest0-21swapper/621:55:5012
3496646994341,2cyclictest3305366-21/usr/sbin/httpd22:50:1412
349664699430,1cyclictest0-21swapper/622:29:4112
349664699421,21cyclictest0-21swapper/622:22:1312
349664699421,0cyclictest0-21swapper/600:02:3012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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