Hans Reiser <reiser@namesys.com> wrote:
>
> compilation is not an effective benchmark anymore, not for Linux
> filesystems, they are all just too fast (or is it that the compilers are
> too slow?....)
>
The point of this test is to measure interactions, and fairness.
It answers the question "how much impact does heavy filesystem I/O have upon
other system activity?".
The "other system activity" in this test is a kernel compile. That is a
fairly reasonable metric, because it is sensitive to latencies in servicing
reads and it is sensitive to inappropriate page replacement decisions.
A more appropriate foreground load might be opening a word processor and
composing a short letter to Aunt Nellie, but that's harder to automate. We
expect that reduced kernel compilation time will correlate with lower-latency
letter writing.
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This archive was generated by hypermail 2b29 : Fri Jan 31 2003 - 22:00:26 EST