On Thu, Apr 27, 2006 at 11:53:29AM +1000, James Peach wrote: > On 4/27/06, Greg Dickie <[EMAIL PROTECTED]> wrote: > > OK all my gobbledy-gook stats aside..... sorry for being incoherent. > > > > Stracing reveals that files after 3.0.20b are opened with O_SYNC. Could > > that be the source of the problems? I'll try and find that and test it > > when I get home but the question is is it necessary? > > O_SYNC is not a good option to use if you want good write performance > on XFS. It's what you use to when you really want your data safe and > don't care about throughput.
Ok - it's set in smbd when the client sets the create options flag FILE_WRITE_THROUGH. That was added in the conversion to ntcreateX code from the old openX code. I expected FILE_WRITE_THROUGH to be *very* rare - I'll look over lots of traces to check. I can easily add a check for "strict sync = yes" before setting that flag. Give me a minute or so.... Jeremy. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/listinfo/samba
