Ubuntu 17.10 with DisplayLink 1.4 - Laggy mouse, CPU usage dependent

treffer · 10-24-2017, 04:34 AM

I can confirm this performance regression (although with fedora f26 and kernel 4.13.5-200)

a perf profiling on the DisplayLinkManager binary shows very heavy usage of the copy_user_enhanced_fast_string call (>30%) which isn't the case for DL 1.3.54, so maybe that's causing the lag...

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10-24-2017, 04:34 AM	#2
treffer Junior Member Join Date: Sep 2017 Posts: 2	I can confirm this performance regression (although with fedora f26 and kernel 4.13.5-200) a perf profiling on the DisplayLinkManager binary shows very heavy usage of the copy_user_enhanced_fast_string call (>30%) which isn't the case for DL 1.3.54, so maybe that's causing the lag...