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| author | pjd <pjd@FreeBSD.org> | 2005-07-25 10:03:16 +0000 |
|---|---|---|
| committer | pjd <pjd@FreeBSD.org> | 2005-07-25 10:03:16 +0000 |
| commit | da0fa3b3e071fca3f1287439ec8fb56f430166fd (patch) | |
| tree | 928f47c30e231832f8d3eec4d2869be495ce6183 /lib/libc | |
| parent | a2d24671eab600f642f4ff91d05a29f9cc8de794 (diff) | |
| download | FreeBSD-src-da0fa3b3e071fca3f1287439ec8fb56f430166fd.zip FreeBSD-src-da0fa3b3e071fca3f1287439ec8fb56f430166fd.tar.gz | |
Add a very simple and small GEOM class - ZERO.
It creates very huge provider (41PB) /dev/gzero.
On BIO_READ request it zero-fills bio_data and on BIO_WRITE it does nothing.
You can also set kern.geom.zero.clear sysctl to 0 to do nothing even for
BIO_READ.
I'm using it for performance testing where it is very helpful.
MFC after: 3 days
Diffstat (limited to 'lib/libc')
0 files changed, 0 insertions, 0 deletions
