Re: [ceph-users] ceph benchmark

2016-06-16 Thread Christian Balzer
Hello, as others already stated, your numbers don't add up or make sense. More below. On Thu, 16 Jun 2016 16:53:10 -0400 Patrick McGarry 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 > wrote: > > Hello! > >

Re: [ceph-users] ceph benchmark

2016-06-16 Thread Karan Singh
Agree with David Its being cached , you can try - oflag options for dd - monitor system cache during dd - Karan - On Fri, Jun 17, 2016 at 1:58 AM, David wrote: > I'm probably misunderstanding the question but if you're getting 3GB/s > from your dd, you're already caching. Can you provide some

Re: [ceph-users] ceph benchmark

2016-06-16 Thread David
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" wrote: > Moving this over to ceph-user where it’ll get the eyeballs you need. > >

Re: [ceph-users] ceph benchmark

2016-06-16 Thread Patrick McGarry
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 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

[ceph-users] Ceph benchmark

2015-05-05 Thread Venkateswara Rao Jujjuri
I am running ceph bench mark on a 3 node cluster. I am seeing that the bandwidth is going down and latencies are going up beyond 16k. What must be going on ? Is there anything I must check? Thanks in advance for your help. Hard disk can handle it.(dd below) and it is a 1Gb network. vjujjuri@rg

[ceph-users] Ceph Benchmark 0.79

2014-04-29 Thread Dyweni - Ceph-Users
Hi, A little confused over how to perform benchmark tests on Ceph 0.79. Would someone help clarify the operation please? Per this article 'http://ceph.com/docs/master/rados/operations/control/?highlight=bench', the benchmark syntax should be: ceph osd tell N bench [BYTES_PER_WRITE] [T