madnet.ch - Rolf Klemenz » MadNet

Gallery Included

Rolf — Sat, 28 Feb 2009 08:34:49 +0000

I also included a small gallery to the site. The gallery content comes from my images server through a php script and the presentation is done using jQuery with livequery and slimbox2.

I had to use livequery because I wanted to add a lightbox effect to the asynchronously loaded DOM for the gallery content. That’s a common problem when dealing with ajax.

This is how it looks like now:


    
    
    
    
    

...
jQuery( function() {
    $("#g .gallery").livequery(function() {
        $(this).children("a").slimbox();
    });
    $("#g .galleryContainer").livequery(function() {
        $(this).click(function() {
            $(this).children(".gallery").slideToggle("slow");
        });
        $(this).children(".gallery").slideUp("slow");
        $(this).children("h3").hover(function() {
            $(this).fadeOut(100);$(this).fadeIn(500);
        });
    });
    $("#g").load("/galleryImages/AllImages.php");
});

Tuning Gigabit Ethernet on Mac OS X (10.5)

Rolf — Mon, 16 Feb 2009 08:13:24 +0000

I recently bought a new NAS (Netgear ReadyNAS Duo) and attached it to my gigabit ethernet network. Unfortunately I only got transfer rates at around 10 MB/s which is really poor. I enabled Jumbo Frames (MTU > 1500) but this didn’t help much. So I did a bit more research and found out that the limiting factor was not only the MTU but the send and receive buffers.
This means my CPU was not able to catch up with the speed of the gigabit ethernet. What I did then was to increase the send and receive buffers for TCP/UDP traffic. É voilà! Now I get at least 35 MB/s. Still not the max a gigabit ethernet can offer, but I’m on the right way. I’d like to see something like 80-90 MB/s. Given the Samsung Disk can do at least 175 MB/s to/from buffer this should be possible.

I use the following parameters in my sysctl.conf:

kern.ipc.maxsockbuf=2500000 net.inet.tcp.sendspace=1000000 net.inet.tcp.recvspace=1000000 net.inet.tcp.mssdflt=7936 net.inet.tcp.delayed_ack=0
The buffers are probably too high, I know.

Switch

Rolf — Sun, 08 Feb 2009 10:05:56 +0000

As I had to upgrade my 1.0 Joomla CMS to a more recent version anyway, I thought I should give WordPress a chance as well.

Hat off! Despite being a loyal joomla user for many years now, I must admit that wordpress looks like a fine piece of software to me.
I’m so convinced that I will “switch” from joomla to wordpress during the next few days.

I’ll not only change the blog system but also content wise I’d like to make a change… I try to post more often and be more focussed on the main topic “because technology matters”. I’ll post in english again as I plan to release articles about software development more often. And I can train my written english skills