I'm probably misunderstanding the question but if you're getting 3GB/s from your dd, you're already caching. Can you provide some more detail on what you're trying to achieve. On 16 Jun 2016 21:53, "Patrick McGarry" <pmcga...@redhat.com> wrote:
> Moving this over to ceph-user where it’ll get the eyeballs you need. > > On Mon, Jun 13, 2016 at 2:58 AM, Marcus Strasser > <marcus.stras...@highspeed.vol.at> wrote: > > Hello! > > > > > > > > I have a little test cluster with 2 server. Each Server have an osd with > 800 > > GB, there is a 10 Gbps Link between the servers. > > > > On a ceph-client i have configured a cephfs, mount kernelspace. The > client > > is also connected with a 10 Gbps Link. > > > > All 3 use debian > > > > 4.5.5 kernel > > > > 64 GB mem > > > > There is no special configuration. > > > > > > > > Now the question: > > > > When i use the dd (~11GB) command in the cephfs mount, i get a result of > 3 > > GB/s > > > > > > > > dd if=/dev/zero of=/cephtest/test bs=1M count=10240 > > > > > > > > Is it possble to transfer the data faster (use full capacity oft he > network) > > and cache it with the memory? > > > > > > > > Thanks, > > > > Marcus Strasser > > > > > > > > > > > > Marcus Strasser > > > > Linux Systeme > > > > Russmedia IT GmbH > > > > A-6850 Schwarzach, Gutenbergstr. 1 > > > > > > > > T +43 5572 501-872 > > > > F +43 5572 501-97872 > > > > marcus.stras...@highspeed.vol.at > > > > highspeed.vol.at > > > > > > > > > > > > -- > > Best Regards, > > Patrick McGarry > Director Ceph Community || Red Hat > http://ceph.com || http://community.redhat.com > @scuttlemonkey || @ceph > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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