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2019-07-16 - 02:27

Intel(R) Core(TM) i7 CPU X 980 @ 3.33GHz, Linux 3.12.31-rt45 (Profile)

Latency plot of system in rack #3, 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 -Sp99 -i200 -h400 -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 rack3slot3.osadl.org (updated Tue Jul 16, 2019 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126501100irq/42-ahci0-21swapper/411:50:196
25650210693sleep110-21swapper/1111:49:003
12650980irq/42-ahci0-21swapper/111:51:171
2588629792sleep30-21swapper/311:51:285
1126550960irq/53-eth0-rx-0-21swapper/211:47:254
12650930irq/42-ahci0-21swapper/811:50:3610
1126550880irq/53-eth0-rx-0-21swapper/511:47:167
190650860irq/56-eth1-rx-0-21swapper/711:47:249
2559727867sleep60-21swapper/611:48:198
2589227270sleep90-21swapper/911:51:3411
1126550680irq/53-eth0-rx-0-21swapper/1011:47:122
2557426055sleep00-21swapper/011:48:010
26031994326cyclictest0-21swapper/015:02:310
26031993417cyclictest0-21swapper/013:05:210
26048993130cyclictest1126650irq/54-eth0-tx-15:02:3610
26031993015cyclictest19634-21diskmemload13:53:450
26051992726cyclictest30618-21ssh15:02:433
26047992726cyclictest30603-21ssh15:02:409
26035992524cyclictest1126650irq/54-eth0-tx-15:02:484
2603199258cyclictest2343-21cupsd13:57:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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