To ram

[itman007]

Can how much of Knoppix is booted to ram be changed? Even though its a live a cd I assume some parts are loaded to ram and others are retrieved from the dvd or cd as needed. A pc with 4Gb or more of ram could handle the complete OS? Maybe? Any ideas on that?
Thanks.

[Capricorny]

Using a fast USB drive, there is, in my experience, not very much difference between resident programs and programs loaded from the compressed image. This has to do with the development of a lot of factors, making the USB work better and better with time. My personal opinion is that CD/DVD+ "toram" option is simply the wrong way to go. But with 64-bits kernel and 8GB RAM, loading the whole image to ram should work - taking some time, though...
Trying to load parts of the compressed image isn't worthwhile, I think. I strongly suggest people comtemplating more "manual" RAM management - IMHO the combined work of Knoppix and the Linux kernel works very well in this respect try fast USB devices first, USB3 makes a lot of difference too.

[itman007]

I think this may be an IOPS issue. Since my clients boot via pxe, the performance of them is based upon the performance of my tftpboot server.

[Capricorny]

Loading the whole compressed image into RAM may in some cases actually degrade performance, as the Linux kernel by default applies a very active strategy caching programs in available free memory. Also, persistent store is not compressed, so with, say 3-4GB of that loaded into memory in addition to the compressed image, quite a lot of memory may be occupied.