On Sep 1, 2010, at 11:41 AM, Chuck Lever wrote: > > On Sep 1, 2010, at 5:39 AM, Tayade, Nilesh wrote: > >> Hi, >> >> I am unable to get the exact count for the amount of on-the-wire data >> size that NFSv4 supports. >> >> I could get exact figures in case of NFSv3 (http://nfs.sourceforge.net). >> It's 60KB when NFSv3 is used over UDP and implementation dependent in >> case it is used over TCP. Any idea about NFSv4 statistics? >> >> Any pointers would be appreciated. > > NFSv4 reads and writes can be as large as the maximum payload size of the underlying transport. NFSv4 does not support UDP, but on TCP, the maximum payload size is usually approximately (2 ** 31 - 1) - (RPC header + NFS overhead). But you were probably not asking about the theoretical limits of the underlying transport. The Linux NFS client limits read and write payload size to a megabyte. Servers may limit it further. -- chuck[dot]lever[at]oracle[dot]com -- 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
