On Wed, Aug 05, 2015 at 07:13:58AM -0400, jhopper@xxxxxxxxxxxxx wrote: > I have a very slow (less than 1MB/s) performance with nfsv4 TCP, How are you measuring this? > rsize/wsize have no effect, server is a kernel 3.19 x86 100hz no > preempt exporting async nfsv4 TCP on nfs-utils 1.2.7, The "async" export option isn't normally recommended, though it's unlikely to have anything to do with this problem. > client is a > kernel 4.1.3 x64 1000hz full preempt with nfs-utils 1.3.2 , physical > link is 1 gigabit full duplex, I mounted a few cifs shares to check, > the cifs shares are working at 30 MB/s and higher > > is it possible that preempt has an effect on NFS performance ? does > timeslice have effect on performance ? I think those are unlikely to be relevant. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
