Date: Fri, 18 Nov 2011 15:57:06 +0100 From: Fabian Keil <freebsd-listen@fabiankeil.de> To: freebsd-questions@freebsd.org Cc: Jerome Herman <jherman@dichotomia.fr> Subject: Re: Geom Gate usage and perf Message-ID: <20111118155706.72749e3b@fabiankeil.de> In-Reply-To: <4EC66850.2030008@dichotomia.fr> References: <4EC66850.2030008@dichotomia.fr>
next in thread | previous in thread | raw e-mail | index | archive | help
--Sig_/rWGxD0W2O5dT0gebI9.8IXd Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Jerome Herman <jherman@dichotomia.fr> wrote: > Just wondering if anyone is using geom gate and could help me with huge=20 > perf issue I am having. > Right now the set up is such : 3 drives on the same machine A, exported=20 > through geom gate and connected to machine B. > On machine B I format the drives as freebsd-vinum and mount them in=20 > stripping+mirroring. >=20 > The end goal is to have High Availability drives. >=20 > The setup is working, but the perf are awfull. Thinking It was due to=20 > software stripping and mirroring slowing the process down I tried with=20 > only one drive with a standard UFS format. >=20 > The perf are still horrible. When the drive is mounted locally on=20 > machine A and I copy data with rsync from machine B; I have a steady=20 > 12MB/s data transfer rate. > When the same drive is mounted with geom gate on machine B, the copy=20 > rate is around 6KB/s to 25KB/s >=20 > The drive was tested for I/O problems twice, and nothing was found. >=20 > Any idea or suggestion as to where the problem might come from ? I haven't used ggate in years, but if I remember correctly I had performance issues as well until I significantly increased the send and receive buffers for ggatec and ggated. I think I never reached the performance I had hoped for, but at least it got good enough to be usable. Fabian --Sig_/rWGxD0W2O5dT0gebI9.8IXd Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk7GckoACgkQBYqIVf93VJ1rSQCdExTwoqW2Xx8EYzwmkFQhts41 orsAnRMUj6plvBu5ZXbvmaxnJ5kzhJM3 =BIHv -----END PGP SIGNATURE----- --Sig_/rWGxD0W2O5dT0gebI9.8IXd--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20111118155706.72749e3b>