MySQL Development wrote: [snip] > The problem is that this did not work out. Every time when I run a make on a > MySQL source tree, I "loose" some of my memory. More specifically spoken, the > amount of memory, called "Active" increases, while "Cached" decreases (names > are taken from /proc/meminfo). Just to avoid misunderstandings: "Active" does > not fall back to what it was before the the make process started. After > running MySQL makes a couple of times, "Active" occupies about 80 to 90% of > the RAM. After that, it does not grow any more. Nevertheless, only a small > fraction of my expensive RAM is left for the file system cache.
Have you tried to adjust /proc/sys/vm/vfs_cache_pressure ? linux/Documentation/filesystems/proc.txt might be worth a read. Thiemo