Re: [ceph-users] Parallel reads with CephFS

Thanks for your response! 2016-12-09 1:27 GMT+01:00 Gregory Farnum : > On Wed, Dec 7, 2016 at 5:45 PM, Andreas Gerstmayr > wrote: >> Hi, >> >> does the CephFS kernel module (as of kernel version 4.8.8) support >> parallel reads of file stripes? >>

Re: [ceph-users] Parallel reads with CephFS

On Wed, Dec 7, 2016 at 5:45 PM, Andreas Gerstmayr wrote: > Hi, > > does the CephFS kernel module (as of kernel version 4.8.8) support > parallel reads of file stripes? > When an application requests a 500MB block from a file (which is > splitted into multiple objects

Re: [ceph-users] Parallel reads with CephFS

Hi, thanks for your response. Yes, I ran my benchmark tests with a striping configuration of 1 MB stripe unit, 10 stripe count and 10 MB object size. Therefore when reading with a blocksize of 10 MB, 10 stripe units in 10 different objects could be read in parallel [1]. With an (artificially

Re: [ceph-users] Parallel reads with CephFS

Hi... Are you actually playing with file layout? http://docs.ceph.com/docs/jewel/cephfs/file-layouts/ By increasing the stripe count and tuning the stripe unit to your application block size, you may have an increase of performance. Cheers Goncalo On 12/08/2016 12:45 PM, Andreas