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Increase the tx and rx buffer for vmxnet3 and e1000 virtual NIC for VMWare

To deploy a vm doing routing between virtual NIC, you may need to increase the tx and rx buffers of the NIC to cope with burst traffic.

– To show the current tx and rx buffer of your NIC

ethtool -g eth0

– To increase the tx and rx buffer to the max preset

ethtool […]

Ubuntu : cannot mute the speaker after inserting the headphone by default

It seems that the Ubuntu (up to 12.04) will not mute the speaker after inserting the headphone to the headphone jack. After searching for solution for a while, I found the below trick work :

Install gnome-alsamixer and check headphone jack sense

video encoding software for Linux

I found handbrake http://handbrake.fr/ was useful and easy to use on Linux

Some rethinks about today’s RAID 5

http://www.standalone-sysadmin.com/blog/2012/08/i-come-not-to-praise-raid-5/

AND

RAID’s write penalty on IOps

http://www.yellow-bricks.com/2009/12/23/iops/

Force Centos/Fedora login screen to ask for username rather than displaying a list of users

gconftool-2 –direct –config-source xml:readwrite:/etc/gconf/gconf.xml.mandatory –type Boolean –set /apps/gdm/simple-greeter/disable_user_list True

Dell Managemnet vCenter Plugin

http://www.tonydimaggio.com/blog/2011/01/30/installing-and-configuring-dell-management-vcenter-plugin/

Huawei MediaPad 7

Bought a Huawei MediaPad 7 with only $1899 and running ICS 4.0.3 (its list price was $3980 when it was first released on Dec 2011) to replace my 1.7 years old Archos 70 IT.

Huawei MediaPad 規格表:

頻率:GSM 850/900/1800/1900 MHz;WCDMA 850/900/1900/2100 MHz;HSDPA 14.4Mbps;HSUPA 5.76Mbps 處理器:Qualcomm MSM 8×60 1.2GHz 雙核心處理器 記憶體:1GB DRAM;8GB 內存空間 屏幕:7 吋 […]

Create a shortcut for ‘Switch User’ under Windows 7

Rt click on desktop > New > Shortcut > Type C:\Windows\System32\tsdiscon.exe Click Next > Name it ‘Switch Users’ > Finish.

How to Install Microsoft SQL Server 2008 R2 for VMware vCenter 5

http://lonesysadmin.net/2011/10/06/how-to-install-microsoft-sql-server-2008-r2-for-vmware-vcenter-5/

Create a bootable Windows PE 3.0 USB drive

http://4sysops.com/archives/build-a-bootable-windows-pe-3-0-usb-drive-with-rescue-tools-part-1/