On Tue, 2005-04-12 at 15:26 -0700, Trond Myklebust wrote: > ty den 12.04.2005 Klokka 15:22 (-0400) skreiv Xin Zhao: > > I have very very fast network and is testing NFS2 over this kind of > > network. I noticed that for standard work like read/write a large > > file, compile kernels, the performance of NFS2 is good. But if I try > > to decompress kernel tar file. The standard ext2 takes 28s while NFS2 > > takes 81s. Also, if I remove the kernel source code tree, ext2 takes > > 19s but NFS2 takes 44s. > > > > Why? (You can assume that network is very fast. ) Is there any > > improvements in NFS3/4 on this issue? If so, how? > > NFSv2 requires the server to immediately write all data to disk before > it can reply to the RPC write request (synchronous writes).
This behavior can be disabled with the "async" export option for NFSv2. Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
