Re: [Ext2-devel] disk throughput

Andrew Morton
2001-11-05T22:59:12Z

Andreas Dilger wrote:
>
> On Nov 05, 2001 14:22 -0800, Andrew Morton wrote:
> > But I don't know. This is just all bullshit handwaving speculation.
> > We need tests. Numbers. Does anyone have source to a filesystem
> > aging simulation? The Smith/Seltzer code seems to be off the air.
>
> There is a guy doing fragmentation testing for reiserfs. It turns
> out that (in his tests) reiserfs can get 10x slower as the filesystem
> fills up because of intra-file fragmentation. I don't know enough
> about reiserfs block/file allocation policy to know how this compares
> to ext2 at all.
>
> See http://www.informatik.uni-frankfurt.de/~loizides/reiserfs/agetest.html
>

Wow. That looks nice. Unfortunately the tarballs are
missing several files. read.cxx, agesystem.cxx, etc. Plus
a number of dud links.

Constantin, could you please check that the agesystem3 tarball
builds OK, maybe put up a new one? Thanks.

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