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2024-05-21 - 19:09
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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
Characteristics of the 20 highest latencies:
System rackeslot0.osadl.org (updated Tue Feb 06, 2024 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1701799741736,3cyclictest367-20systemd-journal11:41:332
1701999726218,20cyclictest30667-2191-release-upgr08:40:524
17020995537,447cyclictest3746-21apt-config10:29:455
170209955026,520cyclictest662-21dbus-daemon10:33:425
17020995499,536cyclictest828-21nfsd10:41:145
1702299538472,26cyclictest11034-21dpkg12:04:557
17020995384,533cyclictest0-21swapper/510:22:065
170219953710,34cyclictest68-21ksoftirqd/608:44:126
170209953511,523cyclictest9840-21stat10:16:355
1702299529522,6cyclictest6725-21sshd09:27:557
17016995298,2cyclictest332-21jbd2/nvme0n1p2-810:13:101
17020995265,520cyclictest332-21jbd2/nvme0n1p2-810:39:475
1702299525523,2cyclictest67650irq/125-eno112:15:547
1702299525523,1cyclictest0-21swapper/709:24:347
1701699524519,2cyclictest13559-21kworker/1:2+events10:47:591
1702099523519,3cyclictest28722-21lsb_release10:57:295
1701899523519,3cyclictest18942-21kworker/3:1+events09:27:553
1701899522520,2cyclictest4500-21kworker/3:0+events12:15:543
1701899521520,0cyclictest18942-21kworker/3:1+events09:24:343
1701999520512,5cyclictest24307-21lsb_release10:22:374
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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