Linked by Thom Holwerda on Sat 28th Jun 2008 22:09 UTC, submitted by diegocg
X11, Window Managers "Maybe I'm just naive, but designing a graphics API such that all image data had to be sent over a socket to another process every time the image needed to be drawn seems like complete idiocy. Unfortunately, that is precisely what the X Window System forces a program to do, and exactly what Cairo does when drawing images in Linux - a full copy of the image data, send to another process, no less, every time it is drawn. One would think there would be some room for improvement. Unsurprisingly, others felt the same way about X, and decided to write an extension, Xlib Shm or XShm for short, that allows images to placed in a shared memory segment from which the X server reads which allows the program to avoid the memory copy. GTK already makes use of the XShm extension, and it seems like a good idea to see if Gecko couldn't do the same."
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RE[3]: Overstated conclusion
by tyrione on Mon 30th Jun 2008 10:36 UTC in reply to "RE[2]: Overstated conclusion"
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You are comparing apples to oranges. Even more of my users run from remote offices using NX (which is still really X). And believe me... NX blows RDP out of the water for both speed and quality over WAN connections. They are not even in the same class. Proxying RDP (or VNC) through an NX server helps some, but not that much. The OSX approach is nothing but VNC, which is noticeably poorer in quality and speed than even RDP.

X has Xshm which is optimum for local clients, straight X which is optimum for LAN environments, and NX which is optimum for WANs. No other windowing system can touch that combination for performance and flexibility.

Edit: I should mention that as amazing as FreeNX is... it has the rudest and most unhelpful support mailing list in all of Open Source, to the point that if I had another option that was even remotely as good I would migrate to it.

Let's not compare WindowServers of OS X to Xorg. Apple didn't design WindowServer around the notion of a VPN/RDP approach.

I will be interested to see how Apple reimplements NXHost and beyond for 10.6 and the Enteprise.

Reply Parent Score: 3