Re: Reiser4 und LZO compression

[Hans Reiser]

Edward Shishkin wrote:
>
> (Plain) file is considered as a set of logical clusters (64K by
> default). Minimal unit occupied in memory by (plain) file is one
> page. Compressed logical cluster is stored on disk in so-called
> "disk clusters". Disk cluster is a set of special items (aka "ctails",
> or "compressed bodies"), so that one block can contain (compressed)
> data of many files and everything is packed tightly on disk.
>
>
>
So the compression unit is 64k for purposes of your benchmarks.