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2022-07-01 - 00:56

ARM Freescale i.MX6UL @528 MHz, Linux 4.16.15-rt7 (Profile)

Latency plot of system in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -i400 -h400 -q
Total number of samples: 50 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 10 highest latencies:
System rack5slot7.osadl.org (updated Thu Jun 30, 2022 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1668243000,26sleep032484-1kworker/u3:006:41:320
17109910433,54cyclictest0-21swapper11:54:290
17109910319,44cyclictest931-21df_inode09:12:310
17109910314,29cyclictest29606-21ssh09:01:380
17109910216,48cyclictest27104-21apt-get10:31:560
17109910215,47cyclictest3910-21apt-get09:21:540
17109910128,57cyclictest0-21swapper09:57:080
17109910124,65cyclictest0-21swapper11:03:440
17109910114,65cyclictest16590-21df_inode11:37:300
17109910031,51cyclictest0-21swapper09:05:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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