6,534
edits
Changes
→Some numbers: +more patches
by this container" (i.e. physpages).
Second is '''Directory directory entry cache''' (dcache for short) is yet another sort of cache,
and another sort of the kernel memory. Disk contents is a tree of files and directories,
and such a tree is quite tall and wide. In order to read the contents of, say,
<precode>/bin/sh</precode> file, kernel have to read the root (<precode>/</precode>) directory, find '<precode>bin</precode>' entryin it, read <precode>/bin</precode> directory, find '<code>sh</code>' entry in it and finally read it.
Although these operations are not very complex, there is a multitude of those, they take time
and are repeated often for most of the "popular" files. In order to improve performance,
kernel NFS server and VZ disk quota.
=== Stats and conclusions Some numbers ===
Totally, there are 53 new patches in 042stab040.1, compared to previous
039 kernels. On top of that, 042stab042.1 adds another 30.We hope that the end result is improved stability and
performance.