You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-03-26 - 23:15

x86 Intel Core i7-3770K @3500 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #0, slot #5
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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack0slot5.osadl.org (updated Sun Mar 26, 2023 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22073272359341,10sleep110-21swapper/1119:02:303
22072932352333,10sleep150-21swapper/1519:02:027
22074662351345,3sleep120-21swapper/1219:04:234
22073162340332,4sleep40-21swapper/419:02:2310
22073262337319,10sleep100-21swapper/1019:02:292
22074872330311,11sleep140-21swapper/1419:04:426
22074042330319,5sleep130-21swapper/1319:03:365
22072812330310,11sleep30-21swapper/319:01:509
22073702328321,4sleep10-21swapper/119:03:081
22073582328310,10sleep80-21swapper/819:02:5914
22075132327311,9sleep20-21swapper/219:05:028
22074442326309,9sleep00-21swapper/019:04:110
22072682324305,10sleep70-21swapper/719:01:3813
22073742323304,10sleep50-21swapper/519:03:1211
22072332323304,10sleep90-21swapper/919:01:0815
22073392322302,11sleep60-21swapper/619:02:4112
220786199306,13cyclictest0-21swapper/1200:16:574
220786199283,14cyclictest0-21swapper/1222:27:074
220786199240,11cyclictest0-21swapper/1223:44:004
220786199240,11cyclictest0-21swapper/1222:16:084
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional