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Old 05-13-2015, 09:35 AM   #1
JamesGuymer
Junior Member
 
Join Date: Nov 2013
Posts: 5
Default DisplayLink Causing my Machine to run very slowly

Hi

Im running Yosemite, Parallels with a MacBook Pro 2.6Ghz 16Gb, with 6 external monitors 2 off the macbook and 4 with the StarTech uSB32DVIPro

I primarily use this as a development environment.

Recently I've noticed a massive slowdown in performance, even as far as Typing code. Ive gone through a lot of Mac Checks, reset permissions etc and have installed a fresh version of windows ruling out any other issues.

Yesterday i removed the DisplayLink drivers and the performance was considerably faster. (i appreciate it was only 2 monitors but it was fast). I reinstalled the your drivers 2.4b and it slowed again.

i ran sudo opensnoop after reading another thread and im seeing the following:


501 222 cfprefsd 4 /Users/JamesGuymer/Library/Group Containers/4C6364ACXT.com.parallels.Desktop/Library/Preferences/4C6364ACXT.com.parallels.Desktop.plist.n1wFsgU
501 1036 Terminal 21 /Users/JamesGuymer/Library/Saved Application State/com.apple.Terminal.savedState/data.data
501 1036 Terminal 22 /Users/JamesGuymer/Library/Saved Application State/com.apple.Terminal.savedState/windows.plist
501 1036 Terminal 23 /Users/JamesGuymer/Library/Saved Application State/com.apple.Terminal.savedState/window_1.data
501 1036 Terminal 24 /Users/JamesGuymer/Library/Saved Application State/com.apple.Terminal.savedState/window_2.data
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
501 222 cfprefsd 4 /Users/JamesGuymer/Library/Group Containers/4C6364ACXT.com.parallels.Desktop/Library/Preferences/4C6364ACXT.com.parallels.Desktop.plist.n1wFsgU
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
501 222 cfprefsd 4 /Users/JamesGuymer/Library/Group Containers/4C6364ACXT.com.parallels.Desktop/Library/Preferences/4C6364ACXT.com.parallels.Desktop.plist.6deqZVx
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
501 222 cfprefsd 4 /Users/JamesGuymer/Library/Group Containers/4C6364ACXT.com.parallels.Desktop/Library/Preferences/4C6364ACXT.com.parallels.Desktop.plist.6deqZVx
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
501 222 cfprefsd 4 /Users/JamesGuymer/Library/Group Containers/4C6364ACXT.com.parallels.Desktop/Library/Preferences/4C6364ACXT.com.parallels.Desktop.plist.BSEpqIm
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml
0 94 DisplayLinkMana 6 /Library/Application Support/DisplayLink/.dl.xml

Ive attached my display link information for you

Ive had to remove your drivers for now and revert to 2 monitors which is not ideal for what im doing.

Thanks

James
Attached Files
File Type: zip James’s MacBook Pro_20150513_093239.zip (3.64 MB, 0 views)

Last edited by JamesGuymer; 05-13-2015 at 09:59 AM.
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Old 05-14-2015, 11:42 AM   #2
Carlo
Mac Team
 
Join Date: Feb 2009
Posts: 606
Default

Hi James,

Thank you for the report.

We can see the same root cause. The impact on performance seems to be system specific.
In any case we think we can fix it, not sure we'll be able by the final 2.4 though.
Before you ask I cannot give any dates!

Regards,
Carlo
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