On Thu, Jul 05, 2007 at 05:10:10PM +0200, Robert Manea wrote:

* Andrea Rossato (mailing_list@istitutocolli.org) wrote:

...

XMobar is a minimalistic text only status bar.

What's new: - many performance improvements on the monitors side; [...] Any suggestion, comments, critics are welcome.

I would suggest to consider improving overall memory usage:

PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 12955 robert 15 0 37932 2512 1508 S 0.0 0.7 0:00.03 ./dist/build/xmobar/xmobar 12956 robert 15 0 37932 2512 1508 S 0.0 0.7 0:00.01 ./dist/build/xmobar/xmobar 12958 robert 18 0 37932 2512 1508 S 0.0 0.7 0:00.02 ./dist/build/xmobar/xmobar 12961 robert 15 0 37932 2512 1508 S 0.0 0.7 0:00.00 ./dist/build/xmobar/xmobar 12954 robert 15 0 37932 2512 1508 S 0.0 0.7 0:00.09 ./dist/build/xmobar/xmobar

well, this does not tell me much, actually... xmobar is linked to everything needed to run a haskell binary in your system, and all this stuff must be loaded. have a look here: http://virtualthreads.blogspot.com/2006/02/understanding-memory-usage-on-lin...

Just for comparision purposes:

2982 robert 15 0 5640 2436 1528 S 0.0 0.7 0:01.95 /home/robert/bin/xmonad 2981 robert 15 0 4044 984 796 S 0.0 0.3 0:00.14 dzen2

This is just a misleading statement: dzen is using a lot of library that are already loaded into memory. This is not a useful comparison. You should know that. But if I'm getting something wrong please let me know. Anyway thanks for your kind attention. Ciao Andrea

On Thu, Jul 05, 2007 at 06:57:27PM +0200, Robert Manea wrote:

True for the virtual memory size. Still, the question remains why does xmonad which is obviuosly also linked to "everything needed to run a haskell binary" _not_ use equally much memory?

The answer might be: because xmobar uses some really huge libraries that are not being used by/shared with any other haskell prog i use. So if I go one step further i could conclude that I'm spending a lot of precious memory for only a single application.

I totally agree with you.

* A haskell programm with a fair bit higher complexity than xmobar needs way less memory or said in other words does not need that many huge supporting librarieѕ as xmobar.

xmobar is doing far more complex things than xmonad is doing. just read the code. Xmonad does nothing but keeping track of the windows you open, in a very well design data structure. xmobar parses, forks threads, opens, closes files in very small amounts of time, writes variables shared by threads, and does a lot of very highly difficult operations. Look, I'm far from saying that xmobar is a nice piece of code (I don't care that much, about xmobar, or just about my coding capacity). But it does a lot of very complicated things. Probably in the most inefficiently conceivable way. Still a lot of stuff. Go read it!

* A program (dzen) with a somewhat comparable feature set needs way less memory.

yes, and it requires learning a very complicated programming language, with manual memory allocation and uncontrolled side effects. Memory is cheap, bro...;-)

Please do not take this as any kind of offense, i just wanted to point out the obvious :):

we are just sharing code and opinions. this is just great, isn't it? ciao Andrea

Andrea Rossato writes:

On Thu, Jul 05, 2007 at 07:32:00PM +0000, Xavier Maillard wrote:

...

What does it look like ?

http://gorgias.mine.nu/xmobar/xmobar-0.4.jpg

The status bar at the very bottom of the screen.

Really nice ! I will try it. Xavier

On Thu, Jul 05, 2007 at 10:13:04PM +0000, Xavier Maillard wrote:

Would you mind eventually posting your whole config (xmonad and xmobar) so I can try it here ? I am really no haskell master at all and tweaking Config.hs is too hard :)

Sure. This is my xmobar config (works with the darcs version. For 0.4 change "font" to "fonts", "height" to "hight" and "" to ": Anyway it is almost the same as xmobar.config-sample that you find in the distributed tarballs. Config { font = "-misc-fixed-*-*-*-*-10-*-*-*-*-*-*-*" , bgColor = "#000000" , fgColor = "#BFBFBF" , xPos = 0 , yPos = 0 , width = 1024 , height = 15 , align = "center" , refresh = 10 , commands = [ ("xmb-weather", 36000, ["LIPB"]) , ("xmb-net", 10, ["eth1"]) , ("xmb-mem", 100, ["-t \"Mem: <usedratio>% (<cache>M)\""]) , ("date",600,["+\"%a %b %_d %H:%M %Y\""]) ] , sepChar = "%" , template = "%xmb-cpu% | %xmb-net% | %xmb-mem% * %xmb-swap% | %xmb-weather% | %date%</fc> | %xmb-batt%" } Change xPos and yPos if you want it at the bottom (this is going to be place at the very top of the screen). The screen shot displays ScreenLayout with: the default layout on the left and the tabbed layout on the right. This is what I added (or edited) in the XMonad Config.hs file: import XMonadContrib.Tabbed import XMonadContrib.LayoutScreens import XMonadContrib.TwoPane import XMonadContrib.DwmPromote --these colors are ugly, I was just testing the configuration myconfig = defaultTConf {bgColor = "#FF0000", textColor = "#00FF00"} -- edit the following to match: defaultGaps :: [(Int,Int,Int,Int)] defaultGaps = [(0,15,15,0)] defaultLayouts :: [Layout Window] defaultLayouts = [ tabbed shrinkText myconfig, tiled , mirror tiled , full ] -- added to keys: , ((modMask .|. shiftMask, xK_space), layoutScreens 2 (twoPane 0.5 0.5)) , ((controlMask .|. modMask .|. shiftMask, xK_space), rescreen) , ((modMask, xK_Return), dwmpromote) That's it. To get the two screens just press mod+shift+space. Finally on the right you can see Viperator (a firefox extension: find more about it on the xmonad.org home page). Hope this helps. All the best Andrea