sysbench / fileio - Linux vs. FreeBSD
bruce at cran.org.uk
Sat Jun 5 11:04:12 UTC 2010
On Sat, 5 Jun 2010 12:50:15 +0200
Stefan Miklosovic <miklosovic.freebsd at gmail.com> wrote:
> > /var : ufs with softupdates
> > /usr/obj : zfs with checksums disabled
> > /usr/src : zfs with compression enabled
> > /home : zfs with compression disabled and checksums enabled
> > I ran a test with a blocksize of 8KB and 16 threads.
> > /var : 25.2MB/s
> > /usr/obj : 64.8MB/s
> > /usr/src : 386.3MB/s
> > /home : 60.3MB/s
> Do I understand it well? It seems that zfs with compression enabled on
> /usr/src with 8KB block size and 16 threads performs 386.3MB/s which
> is about 6 times better than debian5? I am thinking about this image
Yes - on one run it even hit 500MB/s. I suspect, however, that the
benchmark isn't accurate because it won't be writing typical data.
Instead it's probably using a buffer that compresses very well.
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