You are here: Home / Projects / QA Farm Realtime / Latency plots / 
2021-01-23 - 05:57

Pentium(R) Dual-Core CPU T4500 @ 2.30GHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #6, slot #7
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 50 highest latencies:
System rack6slot7.osadl.org (updated Sat Jan 23, 2021 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
272172790,0sleep10-21swapper/121:32:001
93872720,0sleep10-21swapper/100:04:051
128042720,0sleep00-21swapper/023:24:380
205232700,1sleep00-21swapper/020:09:240
31193996661,4cyclictest1302-21dbus-daemon23:19:171
31193996660,4cyclictest1328-21wpa_supplicant19:28:161
31193996660,4cyclictest1302-21dbus-daemon00:18:171
3119399664,61cyclictest10133-21ssh23:22:141
3119399663,61cyclictest16994-21diskmemload23:47:131
3118599663,62cyclictest0-21swapper/022:13:140
3118599663,61cyclictest1312-21NetworkManager20:56:160
31193996561,3cyclictest1312-21NetworkManager23:35:171
31193996559,4cyclictest1302-21dbus-daemon23:51:171
31193996559,4cyclictest1302-21dbus-daemon23:43:171
31193996559,4cyclictest1302-21dbus-daemon21:27:161
31193996558,6cyclictest1312-21NetworkManager22:07:161
3119399655,59cyclictest0-21swapper/122:43:161
3119399654,60cyclictest16994-21diskmemload00:47:141
3119399653,61cyclictest0-21swapper/122:02:161
3119399653,61cyclictest0-21swapper/121:59:161
3119399653,61cyclictest0-21swapper/121:45:151
3119399653,61cyclictest0-21swapper/121:36:161
3119399653,60cyclictest0-21swapper/100:10:141
31185996561,3cyclictest1312-21NetworkManager19:49:160
31185996561,2cyclictest1302-21dbus-daemon20:16:160
31185996561,2cyclictest1302-21dbus-daemon19:25:160
31185996560,3cyclictest1312-21NetworkManager20:49:160
3118599653,61cyclictest26625-21ssh22:19:130
3118599653,61cyclictest19244-21ssh00:15:160
3118599652,61cyclictest1312-21NetworkManager22:33:160
31193996461,2cyclictest12241-21kworker/u4:322:56:151
31193996460,3cyclictest1328-21wpa_supplicant20:19:161
31193996459,4cyclictest0-21swapper/123:28:151
31193996459,4cyclictest0-21swapper/121:22:131
31193996458,4cyclictest1312-21NetworkManager20:52:161
31193996458,4cyclictest1312-21NetworkManager19:33:161
31193996451,11cyclictest1302-21dbus-daemon21:43:161
31193996441,21cyclictest1312-21NetworkManager00:38:171
3119399643,60cyclictest0-21swapper/122:36:141
3119399643,60cyclictest0-21swapper/100:21:141
31185996461,2cyclictest1312-21NetworkManager19:51:160
31185996461,2cyclictest0-21swapper/022:09:150
31185996460,3cyclictest1312-21NetworkManager00:41:170
31185996460,2cyclictest1328-21wpa_supplicant21:15:160
31185996460,2cyclictest1328-21wpa_supplicant20:21:160
31185996459,3cyclictest1312-21NetworkManager22:28:160
31185996459,3cyclictest1302-21dbus-daemon23:09:170
3118599644,59cyclictest0-21swapper/019:23:150
31185996422,40cyclictest0-21swapper/021:29:150
31193996361,1cyclictest30086-21kworker/u4:223:06:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional