Comment 44 for bug 810606

I'm running into this issue myself. I just loaded up a new application on my linux system that is being bottlenecked by the smbfs I/O issue. I've been reading through these threads (among others) I've done as many tweaks as I can. As one person above tested using smbclient vs smbfs/cifs you can see there is quite a difference..

I run a linux VM (SMB Client) and a Windows 2008 R2 server (SMB server) on a VMware box. Using smbclient I am able to get 500+MB/sec of throughput, using the smbmount or fstab mount I can only get around 120MB/sec or so. Granted this is GigE speeds, but my VM's are linked together via 10Gig Virtual NICs.