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2019-07-17 - 02:43

AMD Athlon(tm) XP 2000+, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #3, slot #2
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 -n -a0 -t1 -p99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Characteristics of the 20 highest latencies:
System rack3slot2.osadl.org (updated Fri Jan 25, 2019 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2371611190,2sleep23717-21uname09:20:590
2541011120,1sleep25411-21cut07:55:510
147041680,2sleep14705-21ntpq09:06:000
127831620,2sleep12784-21sh12:40:220
199851560,2sleep19987-21sed09:15:590
62041540,2sleep6203-21rm11:48:220
11659994528,14cyclictest10-21rcuc/012:11:180
159271431,4sleep15955-21ssh10:35:580
1165999437,4cyclictest0-21swapper12:20:440
1165999437,31cyclictest0-21swapper11:16:440
1165999435,33cyclictest0-21swapper09:37:090
231431421,4sleep23153-21ssh10:02:360
1165999428,30cyclictest2095-21fschecks_count11:00:520
1165999426,31cyclictest0-21swapper10:43:330
1165999425,33cyclictest0-21swapper12:35:230
1165999425,33cyclictest0-21swapper10:23:110
11659994210,5cyclictest8617-21ssh11:09:080
1165999418,4cyclictest0-21swapper12:02:570
1165999418,28cyclictest0-21swapper10:11:230
1165999418,28cyclictest0-21swapper09:35:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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