On Mon, Jul 22, 2013 at 03:38:47PM -0400, Bryan Schumaker wrote: > On 07/22/2013 02:53 PM, J. Bruce Fields wrote: > > On Fri, Jul 19, 2013 at 05:03:45PM -0400, bjschuma@xxxxxxxxxx wrote: > >> From: Bryan Schumaker <bjschuma@xxxxxxxxxx> > >> > >> These patches build on Zach Brown's copyfile patches to add server side > >> copy to both the NFS client and the NFS server. > >> > >> The first patch improves on the copyfile syscall to make it usable on my > >> machine and also includes notes on other potential problems that I've > >> found. The remaining patches first implement a sync copy, then expand to > >> async. > >> > >> My testing was done on a server exporting an ext4 filesystem exporting an > >> ext4 filesystem. I compared copying using the cp command to copying with > >> the copyfile system call. > > > > Were these tests using the full series of patches? (So, using the > > asynchronous mechanism?) > > Yes. Want me to re-run them without it? I don't think it's urgent. --b. > > - Bryan > > > > > --b. > > > >> > >> > >> File size: 512 MB > >> cp: 4.244 seconds > >> copyfile: 0.961 seconds > >> > >> File size: 1024 MB > >> cp: 9.091 seconds > >> copyfile: 1.919 seconds > >> > >> File size: 1536 MB > >> cp: 15.291 seconds > >> copyfile: 6.016 seconds > >> > >> > >> Repeating these tests on a btrfs exported filesystem supporting the copyfile > >> system call drops the time for copyfile to about 0.01 seconds. > >> > >> Feel free to send me any questions, comments or other thoughts! > >> > >> - Bryan > >> > >> Bryan Schumaker (5): > >> Improve on the copyfile systemcall > >> NFSD: Implement the COPY call > >> NFS: Add COPY nfs operation > >> NFSD: Defer copying > >> NFS: Change copy to support async servers > >> > >> fs/copy_range.c | 10 +++- > >> fs/nfs/callback.h | 13 ++++ > >> fs/nfs/callback_proc.c | 9 +++ > >> fs/nfs/callback_xdr.c | 54 ++++++++++++++++- > >> fs/nfs/inode.c | 2 + > >> fs/nfs/nfs4_fs.h | 7 +++ > >> fs/nfs/nfs4file.c | 101 +++++++++++++++++++++++++++++++ > >> fs/nfs/nfs4proc.c | 16 +++++ > >> fs/nfs/nfs4xdr.c | 150 +++++++++++++++++++++++++++++++++++++++++++++++ > >> fs/nfsd/nfs4callback.c | 136 ++++++++++++++++++++++++++++++++++++++++++ > >> fs/nfsd/nfs4proc.c | 104 ++++++++++++++++++++++++++++++-- > >> fs/nfsd/nfs4state.c | 15 ++++- > >> fs/nfsd/nfs4xdr.c | 121 +++++++++++++++++++++++++++++++++++++- > >> fs/nfsd/state.h | 23 +++++++- > >> fs/nfsd/vfs.c | 9 +++ > >> fs/nfsd/vfs.h | 1 + > >> fs/nfsd/xdr4.h | 24 ++++++++ > >> fs/nfsd/xdr4cb.h | 9 +++ > >> include/linux/nfs4.h | 14 ++++- > >> include/linux/nfs_xdr.h | 33 +++++++++++ > >> include/linux/syscalls.h | 1 + > >> 21 files changed, 836 insertions(+), 16 deletions(-) > >> > >> -- > >> 1.8.3.3 > >> > >> -- > >> 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 > -- 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
