On 2017-10-01 16:47, Alexander Kushnirenko wrote:
> Hi, Gregory!
>
> Thanks for the comment. I compiled simple program to play with write speed
> measurements (from librados examples). Underline "write" functions are:
> rados_write(io, "hw", read_res, 1048576, i*1048576);
> rados_aio_write(i
Hi, Gregory!
Thanks for the comment. I compiled simple program to play with write speed
measurements (from librados examples). Underline "write" functions are:
rados_write(io, "hw", read_res, 1048576, i*1048576);
rados_aio_write(io, "foo", comp, read_res, 1048576, i*1048576);
So I consecutively
It sounds like you are doing synchronous reads of small objects here. In
that case you are dominated by the per-op already rather than the
throughout of your cluster. Using aio or multiple threads will let you
parallelism requests.
-Greg
On Fri, Sep 29, 2017 at 3:33 AM Alexander Kushnirenko
wrote:
Hello,
We see very poor performance when reading/writing rados objects. The speed
is only 3-4MB/sec, compared to 95MB rados benchmarking.
When you look on underline code it uses librados and linradosstripper
libraries (both have poor performance) and the code uses rados_read and
rados_write func
