Hans-Juergen Schnitzer writes: > Roch - PAE wrote: > > > > Just posted: > > > > http://blogs.sun.com/roch/entry/nfs_and_zfs_a_fine > > > > > > Which role plays network latency? If I understand you right, > even a low-latency network, e.g. Infiniband, would not increase > performance substantially since the main bottleneck is that > the NFS server always has to write data to stable storage. > Is that correct? > > Hans Schnitzer > >
For this load, network latency plays a role as long as it is of the same order of magnitude to the I/O latency. Once network latency gets much smaller than I/O latency then network latency becomes pretty much irrelevant. At times both are of the same order of magnitude and both must be taken into account. So if your storage is NVRAM based or is far away, then network latency may still be very much at play. -r > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
