Date: Tue, 18 Aug 2009 15:26:28 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-geom@freebsd.org Subject: Re: ZFS slow write performance Message-ID: <h6ea64$fk5$1@ger.gmane.org> In-Reply-To: <3E2345AC-55AD-4D23-B76C-B0C37CB62A51@gromit.dlib.vt.edu> References: <3E2345AC-55AD-4D23-B76C-B0C37CB62A51@gromit.dlib.vt.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
Paul Mather wrote: > Currently, I am just trying to rsync data locally from a read-only > UFS2-mounted USB-attached hard drive, and am getting (IMHO) poor write > speeds of only about 5 MiB/sec. I can't figure out why this is so > relatively low. > Any help or advice is appreciated. There could be many reasons, but you will have to dig more to find them. For example, it might be just that USB has a greater latency and it interferes with some assumptions, but it's only a guess. Try 8.0-BETA2, it has both new ZFS and new USB code.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?h6ea64$fk5$1>