Re: [BENCHMARK] ext3, reiser, jfs, xfs effect on contest

From: Andrew Morton (akpm@digeo.com)
Date: Fri Jan 31 2003 - 14:04:17 EST


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.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Fri Jan 31 2003 - 22:00:26 EST