Djiezes Kraaijst's Bookmarks tagged ubuntu →  View Popular

The current versions can be downloaded by clicking on the links below.

Howto: Set up Hardy for speed, v1.0, Zim

Howto: Set up Hardy for speed, v1.0, HTML

dstat

Dstat is a versatile replacement for vmstat, iostat, netstat, nfsstat and ifstat. Dstat overcomes some of their limitations and adds some extra features, more counters and flexibility. Dstat is handy for monitoring systems during performance tuning tests, benchmarks or troubleshooting.

Current Stable Version :- 0.6.4

Project Home Page :- http://dag.wieers.com/home-made/dstat/

iftop

iftop does for network usage what top does for CPU usage. It listens to network traffic on a named interface and displays a table of current bandwidth usage by pairs of hosts. Handy for answering the question “why is our ADSL link so slow”.

Current Stable Version :- 0.17

Project Home Page :- http://www.ex-parrot.com/pdw/iftop/

MRTG

The Multi Router Traffic Grapher (MRTG) is a tool to monitor the traffic load on network links. MRTG generates HTML pages containing PNG images which provide a LIVE visual representation of this traffic.

Current Stable Version :- 2.15.1

Project Home Page :- http://oss.oetiker.ch/mrtg/

moodss

moodss is a graphical monitoring application. It is modular so that the code accessing the monitored objects is completely separate from the application core. The core takes care of managing modules (loading and unloading),displaying modules data through sortable tables and diverse graphical viewers, handling user set threshold conditions with email alerts, recording and browsing data history from a database.moodss can even predict the future, using sophisticated statistical methods and artificial neural networks, and therefore be used for capacity planning.

Current Stable Version :- 21.5

Project Home Page :- http://moodss.sourceforge.net/

netspeed

Netspeed is just a little GNOME-applet that shows how much traffic occurs on a specified network device (for example eth0). You get the best impression of it, if you look at the screenshots below.

Current Stable Version :- 0.14

Project Home Page :- http://www.wh-hms.uni-ulm.de/~mfcn/netspeed/

tcpflow

tcpflow is a program that captures data transmitted as part of TCP connections (flows), and stores the data in a way

that is convenient for protocol analysis or debugging. A program like tcpdump shows a summary of packets seen on the

wire, but usually doesn’t store the data that’s actually being transmitted. In contrast, tcpflow reconstructs the actual data streams and stores each flow in a separate file for later analysis. tcpflow understands TCP sequence numbers and will correctly reconstruct data streams regardless of retransmissions or out-of-order delivery.

Current Stable Version :- 0.21

Project Home Page :- http://www.circlemud.org/~jelson/software/tcpflow/

• A quick guide to DVD authoring
  

• Access your ext2 and ext3 partitions from Vista
  

• Access Your MySQL Server Remotely Over SSH
  

• An Ubuntu guide to taming the Linux kernel
  

• Analyze Network Protocols With Wireshark on Ubuntu
  

• Apache, MySQL & PHP on Ubuntu
  

• Automated backups in Linux
  

• Backing up in Ubuntu is Finally Made Simple: TimeVault
  

• Become a digital video editing guru using Linux tools
  

Concurrent Booting

About

Concurrent booting allows Ubuntu to take advantage of dual-core processors, as well as processors that hyperthread or multithread or what ever the different companies call it now.

Tweak

• These settings are located in your /etc/init.d/rc file. Lets open it up.

• Look through the file and you will find ”CONCURRENCY=none”. You want to change it to:

And you’re done.

Swapping

About

Swappiness takes a value between 0 and 100 to change the balance between swapping applications and freeing cache. At 100, the kernel will always prefer to find inactive pages and swap them out; in other cases, whether a swapout occurs depends on how much application memory is in use and how poorly the cache is doing at finding and releasing inactive items.

The default swappiness is 60. A value of 0 gives something close to the old behavior where applications that wanted memory could shrink the cache to a tiny fraction of RAM. For laptops which would prefer to let their disk spin down, a value of 20 or less is recommended.

Tweak

• First we have to gain access to your /etc/sysctl.conf file.

• Just scroll to the bottom of the page and add the tag listed below. The number you want depends on how much ram you have and what you do with your system. Please read the about above this to make your decision. I have mine set to 0 on a dual core laptop with 1 gig of ram and have seen no issues and a good performance gain.

And you’re done.

Broadband Internet

About

These are various tweaks taken from various places. Here is an article that explains them all if you would like to read it in depth.

Tweak

• You have to open your /etc/sysctl.conf file back up again.

• Then again, scroll to the bottom and just add these lines to it.

• You have to reset your sysctl for these to take effect.

And you’re done.