You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-05-28 - 16:34

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 20 highest latencies:
System rack5slot7.osadl.org (updated Sat May 28, 2022 12:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30664224212180,189sleep00-21swapper06:42:590
307319911532,65cyclictest0-21swapper12:10:070
307319910417,46cyclictest32441-21ssh10:31:200
307319910241,45cyclictest0-21swapper11:32:330
307319910235,51cyclictest0-21swapper09:04:260
307319910228,60cyclictest0-21swapper10:36:460
307319910225,66cyclictest0-21swapper12:07:420
307319910134,50cyclictest0-21swapper11:46:310
307319910134,50cyclictest0-21swapper11:19:170
307319910127,49cyclictest0-21swapper09:00:470
307319910033,50cyclictest0-21swapper10:26:070
307319910011,66cyclictest22724-21ssh09:45:350
307319910010,26cyclictest3533-21ssh10:48:090
30731999917,42cyclictest16997-21ssh09:18:250
30731999916,62cyclictest19717-21ssh09:31:310
30731999916,50cyclictest0-21swapper09:36:200
30731999912,66cyclictest15645-21ssh09:12:290
30731999912,48cyclictest14240-21ssh11:38:230
30731999816,24cyclictest24332-21munin-run09:53:160
30731999815,48cyclictest26231-21ssh10:02:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional