Hi Tushar, Also relevant, what FSAL are you using, and how is that FSAL provisioned (e.g., if VFS, what is underneath it).
Matt ----- Original Message ----- > From: "Tushar Shinde" <[email protected]> > To: "Matt Benjamin" <[email protected]> > Cc: [email protected] > Sent: Tuesday, April 5, 2016 10:30:16 AM > Subject: Re: [Nfs-ganesha-devel] NFSv4 open close operations are slow > compared to Linux kernel NFSv4 > > Hi Matt, > > The workload is small files creation on specific interval. Create + > write in one thread, Later other thread will read + delete. > Since these are small files there is frequent open and close, To test > this I did just open and close and compared with both Kernel NFSv4 and > Ganesha. > I found overall time taken by Ganesha is more than Kernel nfsv4 for longer > runs. > > I tried to replace PTHREAD_MUTEX_init to use > PTHREAD_MUTEX_ADAPTIVE_NP, It helped a bit, But not considerable > difference. > The performance drop with 2 clients doing open close drops sharply. I'm surprise this has an effect--isn't it the default on (any modern glibc Linux platform)? > > Initially I thought dispatcher is bottleneck, After adding few debugs > I found its multi threaded and not the problem. > I will update you if I found something interesting. Cool, appreciated. Matt > > Tushar. > > > > On Mon, Apr 4, 2016 at 9:23 PM, Matt Benjamin <[email protected]> wrote: > > Hi Tushar, > > > > There's no one specific thread, no, but as a project, we're interested in > > continuous performance improvement. > > > > Can you provide details of your setup and workload for reference? > > > > Matt > > > > ----- Original Message ----- > >> From: "Tushar Shinde" <[email protected]> > >> To: [email protected] > >> Sent: Sunday, April 3, 2016 10:10:24 AM > >> Subject: [Nfs-ganesha-devel] NFSv4 open close operations are slow compared > >> to Linux kernel NFSv4 > >> > >> > >> > >> Hi, > >> > >> I am facing issue that NFS v4 Ganesha is slower than kernel v4 server. I > >> found it about 20-30 percent slower. > >> > >> Anyone know any patch/mail thread discussing this problem? > >> > >> Thank you, > >> Tushar > >> > >> ------------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Nfs-ganesha-devel mailing list > >> [email protected] > >> 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. 734-707-0660 > > fax. 734-769-8938 > > cel. 734-216-5309 > -- Matt Benjamin Red Hat, Inc. 315 West Huron Street, Suite 140A Ann Arbor, Michigan 48103 http://www.redhat.com/en/technologies/storage tel. 734-707-0660 fax. 734-769-8938 cel. 734-216-5309 ------------------------------------------------------------------------------ _______________________________________________ Nfs-ganesha-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel
