On Thu, 2005-04-14 at 23:04 -0400, ltsp wrote: > I doubled the memory in my LTSP server today from 256 Mb to a whopping > 512 Mb and the result was truly amazing! The speed of the clients was > so much faster, and the servers cpu utilization dropped from about 80% > to roughly 20%. I'm looking for other quick fixes / speed bumps. I'm > wiring the server w/ gigabit to the switch that clients hang off of. > What about video memory, would increasing that help? How important is > drive speed - do the sessions need to write alot writing to caches? > Would a faster drive make a noticeable difference? Thanks for the input, > > Dunc
Video RAM on the clients might make some difference, but video RAM on the server probably wouldn't. EG, if your X server is caching lots of pixmaps, or you're doing GLX (mesa) with lots of texture maps... I'd expect those to increase video RAM needs on the clients. Gigabit might be helpful. So might adding a small disk to each box, and using NX. VNC might help as well, without the extra disk, but it probably wouldn't help as much. Both NX and VNC would likely reduce the need for a faster network. Drive speed on the server matters if you have apps running on the server, displayed on the clients, that are I/O intensive. If you want to find the bottlenecks on your system, dstat can be a helpful tool...
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