Patrick, I did timing tests. Rsync is not a tools that should I trust for speed test. I simply do "cp" and extra write tests to ceph cluster. It is very very fast indeed. Rsync itself copies an 1GB file slowly and it takes 5-7 seconds to complete. Cp itself does it in 0,901s. (Not even 1 second). So false alarm here. Ceph is fast enough. I also do stress tests (such as multiple background write at the same time) and they are very stable too. Thanks for the heads up to you and all others. Gencer. -----Original Message----- From: Patrick Donnelly [mailto:pdonnell@xxxxxxxxxx] Sent: Monday, July 17, 2017 11:21 PM To: gencer@xxxxxxxxxxxxx Cc: Ceph Users <ceph-users@xxxxxxxxxxxxxx> Subject: Re: Yet another performance tuning for CephFS On Mon, Jul 17, 2017 at 1:08 PM, <gencer@xxxxxxxxxxxxx> wrote: > But lets try another. Lets say i have a file in my server which is > 5GB. If i do this: > > $ rsync ./bigfile /mnt/cephfs/targetfile --progress > > Then i see max. 200 mb/s. I think it is still slow :/ Is this an expected? Perhaps that is the bandwidth limit of your local device rsync is reading from? -- Patrick Donnelly _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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