> Op 23 november 2017 om 7:43 schreef Prasad Bhalerao <prasadbhalerao1983@xxxxxxxxx>: > > > Hi, > > I am new to CEPH and I have some question regarding it? > > Could you please help out? > Yes, but keep in mind a lot of these questions have been answered previously. > What is default value of rgw_stripe_size and max_chunk_size? > RGW stripes in 4MB RADOS objects. > What is default size of object stored in Ceph Storage Cluster? Is it > dependent on stripe size or chunk size? > None, the application on top of RADOS decides how large the stripes are. > What is bucket with respect to RGW? How one should decide the name of > bucket? Does creating too many bucket (different bucket per request) > creates performance problem? > Please refer to the Amazon S3 model, that will explain what buckets are. You can create millions of buckets without having a performance impact. > Why does CEPH first stripes the data into series of stripes and then again > divide these stripes into smaller chunks? Is striping data into stripes not > enough? > It doesn't. RGW stripes over RADOS, RADOS itself doesn't stripe data. > If an object is divided into series of smaller units (for performance > benefit) , how does CEPH returns the complete object when GET request is > made? > > Where does it store the ids/numbers of subsequent stripes to form a > complete object from its smaller chunks? > > Does striping a small object (e.g. 100 KB to 4 MB) creates a performance > overhead as CEPH has to read all the chunks related to this Object and then > combine it into one single object before it returns it? Isn't it too much > optimization for handling smaller objects? > > Does librados (ceph native apis) also perform data striping if used for > storing data into CEPH cluster? > No, RADOS itself does not stripe objects. Wido > Thanks, > Prasad > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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