11 articles Articles posted in Technology

Mac sluggish after Yosemite upgrade, WindowServer process hogging lots of CPU. Suspected memory leak.

The Problem After upgrading from OSX Mavericks to Yosemite, at various points I noticed that my Mac became almost unusable, very sluggish – slow window loading, mouse movements were jerky etc. Loading Activity Monitor, I could see that one of the core OSX services “WindowServer” was constantly hogging 20-40% CPU. Individual Solution Using a little Google-Fu I stumbled across the following article on the Apple support forums. Essentially you should try (a) fixing your disk permissions …

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Windows 7 drag and drop isn’t working, quick-fix.

I have found that infrequently dragging and dropping stops working within an explorer shell. Having googled there seems to be numerous causes. For a quick fix which works for me, try:  Press Ctrl-Alt-Del  Press Esc This works for me every time, and it happens infrequently enough that i’m happy to put up with the workaround rather than trying to find the root cause!

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How to remove a git alias

I’m just getting started with git and ended up creating a number of duff aliases, to remove aliases use the following command in your git shell: git config –global –unset alias.myAlias

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Clearing/Deleting MSSQL Server wait statistics (performance troubleshooting)

Clearing/Deleting MSSQL Server wait statistics (performance troubleshooting)

Troubleshooting SQL Server performance issues is a huge subject, but I often start by analysing the wait (sys.dm_os_wait_stats) and virtual file statistics (sys.dm_io_virtual_file_stats) in parallel. If the performance issues are not blocking, then it is always a good idea to clear the wait statistics and then let server run for a set period (Hour, Day, Week) giving you a good set of data to work with. Wait stats are cleared by running: DBCC SQLPERF(‘sys.dm_os_wait_stats’, CLEAR) However …

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Resizing a VirtualBox VHD or VDI file on Mac OS X

Resizing a VirtualBox VHD or VDI file on Mac OS X

I recently created a Windows 8 VM using VirtualBox on my iMac and misjudged how much space I would need, however not being an experienced VirtualBox user I didn’t realise you wouldn’t be able to increase the VM size from within the GUI. After a quick google session I also found that the advice on resizing VirtualBox VMs was very Windows-centric, so I thought i’d post step-by-step instructions for all you Mac VirtualBox users our …

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Excel 2010 & 2013: Insert / Data menus greyed out, can’t click on PivotCharts / PivotTables

Excel 2010 & 2013: Insert / Data menus greyed out, can’t click on PivotCharts / PivotTables

Help! That’s exactly what I felt like in this situation. I was working in Excel 2010 on a workbook with multiple sheets when I suddenly couldn’t interact with the Insert or Data menus (they were entirely greyed out), I also couldn’t interact with my PivotCharts at all. I spent half an hour scouring the Internet and reading that it may be to do with my Sharing or Protected Workbook options, but my workbook was neither …

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VNC Enterprise Edition E4.5 Released

Stolen faithfully from the news section on the RealVNC website.. VNC Enterprise Edition Version 4.5 Released Tuesday May 12th, 2009 RealVNC is pleased to announce the release of Version 4.5 of VNC Enterprise Edition. Customers with support and maintenance cover are eligible for a free upgrade. This release, for Windows, Unix and Mac OS X platforms, includes the following major new features and enhancements: Printing – print files to the default printer attached to the …

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Macbook iSight camera stopped working, quick fix.

My Macbook’s iSight camera randomly stopped working today, having worked fine ever since i’ve had it. I originally found the problem with photo booth, and went searching for a resolution. After reading numerous posts about potential fixes, I found out that you should try the following (in order of severity); 1) Double check that it isn’t limited to Photo Booth (try iChat, and check if you can take a new user picture from the Accounts …

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Connecting to a Windows share from Linux

I needed to access some images iso images which are on our Windows file server, from my Ubuntu test box. After a little research I found out how to do this. You essentially need to mount the Windows share on your Linux box, so first things first make sure your Linux box knows the Windows box by name, by editing your /etc/hosts file: 192.168.0.152 trento Next you’ll need to make sure samba and smbfs are …

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“Fix” Mouse acceleration on MacOS X

I’ve been using Macs on and off for a couple of years now but since using a MacBook on a daily basis i’ve been constantly frustrated by the poor mouse acceleration that OS X uses. On top of that, there’s no way to change the mouse acceleration! Having done a quick search I can see that this frustrates alot of other people, many cite SteerMouse as partially improving the problem, it allows you to modify …

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