On Tue, May 29, 2012 at 11:36 AM, Schmurfy <[email protected]> wrote: > Hi, > I have a moosefs cluster (http://www.moosefs.org/) running on linux servers > and one more linux server mounting the distributed filesystem and exporting > it using NFS (since OpenBSD does not have FUSE support). > Now here comes my problem, if I mount the nfs share on a linux host > everything is fine and I can read/write at full speed (100Mb network) but > if I mount the share on an OpenBSD host the write speed is capped around > 1Mb/s (!) but the read is around 80Mb/s. > > I found some old issues on this mailing lists (2004/2006) with users having > these kinds of problems which openbsd nfs client but I am not sure they are > related to mine, if I exports a nfs share on the linux gateway which is > local disk (not on the moosefs cluster) then the speed is fine on OpenBSD > as well as linux clients so it seems related indirectly to moosefs but the > linux client can still read/write at full speed. > > > I tested this with two OpenBSD 5.0 clients, one is a physical machine the > other is a VM running under kvm, both are using the em network driver, the > machines are all in the same local network directly connected by a 100Mb > switch, I tried many flags to mount the nfs share on OpenBSD but never > managed to get any improvement over a simple mount with default options. > I was using pf so I tried disabling it but it changes nothing, another > really strange thing for me is that if I copy the file using scp instead of > nfs from the OpenBSD client then the write speed is also 80Mb+ > > On my linux gateway here is the /etc/exports file (I am using the > nfs-kernel-server package under unbuntu 11.10) : > > /mnt/mfs_volume B *(rw,no_subtree_check,fsid=10,no_root_squash) > /tmp/data B *(rw,no_subtree_check,fsid=5,no_root_squash) > > > Does anyone have an idea on what could happen here ? > is there an alternative to nfs I could try ?
Obvious like trying 5.1 and/or current. Some vmstat, top, systat,nfsstat outputs will be fine as well to see your paging, speed of disk, interrupts, load, rpcstats and so on > > Thanks for any help this is driving me crazy...
