On Feb 13, 2009 8:27pm, Josh Paetzel <[email protected]> wrote:
In my limited experience with VMWare linux seems to have near bare metal
disk performance. FreeBSD seems to incur a significant performance penalty.
For instance on my laptop, running OSX and VMWare Fusion, FreeBSd virtual
machines can't saturate 100TX off the disk, raw dd manages about 7
Megs/sec, which is in line with what I get shovelling big files around.
Disk is a 7200 RPM SATA2.
You might want to try the patch Scott Long made recently
(http://svn.freebsd.org/changeset/base/188570) - I found it doubles the
performance in some cases for VMWare (writing mostly, though sequential
reading can be similarly improved by the combination of this patch and
increasing vfs.read_max), but it's still worse than with Linux (100 MB/s vs
150 MB/s).
As for the original thread topic: I've communicated with the OP and it
appears his method of benchmarking had an error so the problems that appear
in his post are bogus.
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