Frank's result based on testing of fsal vfs can't be generalized to configurations which actually have latency, so, no?
Matt ----- Original Message ----- > From: "William Allen Simpson" <william.allen.simp...@gmail.com> > To: "Frank Filz" <ffilz...@mindspring.com>, > nfs-ganesha-devel@lists.sourceforge.net > Sent: Wednesday, January 11, 2017 5:19:46 AM > Subject: Re: [Nfs-ganesha-devel] Readdir results > > On 1/10/17 4:29 PM, Frank Filz wrote: > > It looks like dirent caching does buy us something, though interestingly > > the > > initial populating tends to be the quickest run... > > > If the initial populating is the quickest run, there must be some > interaction between the cache and the re-fetch that's causing thrashing. > > I make no pretense of understanding this code. But my gut feeling at this > point is to toss this caching entirely. Faster stores and faster networks > mean fetching the entries should be fairly low latency. Need to optimize > moving the data through the system, with less examining it. > > ------------------------------------------------------------------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today. http://sdm.link/xeonphi > _______________________________________________ > Nfs-ganesha-devel mailing list > Nfs-ganesha-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel > -- Matt Benjamin Red Hat, Inc. 315 West Huron Street, Suite 140A Ann Arbor, Michigan 48103 http://www.redhat.com/en/technologies/storage tel. 734-821-5101 fax. 734-769-8938 cel. 734-216-5309 ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Nfs-ganesha-devel mailing list Nfs-ganesha-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel