Back in the day when I was at Mindspring, the words NFS and Linux were generally in close proximity to the word Sucks. FreeBSD's implementation was far superior.
Eight years later, I hope that has changed. No firsthand knowledge these days as I am basking the the MacOSX glow. -D -Dixon -----Original Message----- From: "Shannon Roddy" <[EMAIL PROTECTED]> Date: Fri, 4 Apr 2008 17:42:49 To:[email protected] Subject: Re: [brlug-general] Slow NFS on GigE Find an NFS tuning guide... google. Most things like block size, etc. are tunable for NFS, and it may just be that you need to tune the r/w block sizes. Eg. for Solaris: # Maximize NFS block size * Solaris 8 has a max of 32k * Solaris 9 allows up to 1MB! (Solaris 9 NFS Server required) # Set nfs3_bsize and nfs3_max_transfer_size system parameter on client and server * Futher tuning down of blocksize can be done via mount options: rsize, wsize On Fri, Apr 4, 2008 at 2:08 PM, Dustin Puryear <[EMAIL PROTECTED]> wrote: > I'm curious if anyone has had any performance issues with NFS over GigE? > We are bringing up a pretty standard VMware scenario: VMware servers > are connected to GigE with bonded pair and our Dell NF500 NAS is running > RAID10. Fast and easy. Only.. > > The NFS performance sucks. I need to get some firm numbers, but it looks > like we can't get NFS to perform better than if it were on a Fast > Ethernet network. That said, if we change over to mounting our VM > filesystem using CIFS we can scream at pretty much wire speeds. (By the > way, if using CentOS 5.0 and mount.cifs, upgrade to 5.1 because the 5.0 > kernel will panic sometimes with a mounted CIFS in high usage.) > > Here's out setup: > > 2 Dell 1850's CentOS 5.1 with Intel GigE cards (2 cards each, 2 ports > per card, 1 card = bonded pair = VMware Network, 1 card = 1 port = Admin > Network) > > 1 Dell NF500 running Windows Storage Server 2003 with 4 disk RAID10 and GigE > > Regardless of whether we use bonding/LAG (Dell PowerConnect 5000+) or > just simple GigE over one port, our NFS sucks it. CIFS screams though > and pretty much saturates the connection. > > Right now I've tested Linux <--> NAS. When I have time I'll try Linux to > Linux. > > -- > Dustin Puryear > President and Sr. Consultant > Puryear Information Technology, LLC > 225-706-8414 x112 > http://www.puryear-it.com > > Author, "Best Practices for Managing Linux and UNIX Servers" > http://www.puryear-it.com/pubs/linux-unix-best-practices/ > > _______________________________________________ > General mailing list > [email protected] > http://mail.brlug.net/mailman/listinfo/general_brlug.net > _______________________________________________ General mailing list [email protected] http://mail.brlug.net/mailman/listinfo/general_brlug.net _______________________________________________ General mailing list [email protected] http://mail.brlug.net/mailman/listinfo/general_brlug.net
