Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-31 Thread Somnath Roy
: Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance Yes, I will use Ceph RBD as shared Storage for Oracle Database Cluster, so I need high I/O read write random. With 3 nodes and 24 SAS 15K 1TB, what is the most optimized solution to get it ? On Aug 31, 2015 2:01 AM, "So

Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-30 Thread Le Quang Long
Yes, I will use Ceph RBD as shared Storage for Oracle Database Cluster, so I need high I/O read write random. With 3 nodes and 24 SAS 15K 1TB, what is the most optimized solution to get it ? On Aug 31, 2015 2:01 AM, "Somnath Roy" wrote: And what kind of performance are you looking for? I assume y

Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-30 Thread Somnath Roy
And what kind of performance are you looking for? I assume your workload will be small block random read/write? Btw, without SSD journal write performance will be very bad specially when your cluster is small.. Sent from my iPhone On Aug 30, 2015, at 4:33 AM, Le Quang Long mailto:longlq.openst.

Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-30 Thread Shinobu
How heavy transaction are you expecting? Shinobu On Sun, Aug 30, 2015 at 8:33 PM, Le Quang Long wrote: > Thanks for your reply. > > I intend use Ceph RBD as shared storage for Oracle Database RAC. > My Ceph deployment has 3 nodes with 8 1TB 15k SAS per node, I do not have > SSD at the moment,

Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-30 Thread Le Quang Long
Thanks for your reply. I intend use Ceph RBD as shared storage for Oracle Database RAC. My Ceph deployment has 3 nodes with 8 1TB 15k SAS per node, I do not have SSD at the moment, so I design every SAS will be Journal and OSD. Can you suggest me a way to get highest performance for Oracle Cluste

Re: [ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-29 Thread Somnath Roy
what IOPs are you getting for what block size ? Thanks & Regards Somnath From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Le Quang Long Sent: Saturday, August 29, 2015 9:50 AM To: ceph-users@lists.ceph.com Subject: [ceph-users] Fwd: [Ceph-community]Improve

[ceph-users] Fwd: [Ceph-community]Improve Read Performance

2015-08-29 Thread Le Quang Long
Hello, I'm having a concern about CEPH Read IOPS. I'm not sure how Ceph settles Read request: - Whether only primary OSD or all replica OSDs reply read requests ? - Do I increase Read IOPS by supplementing OSD nodes to cluster? If not, is there any method to do? Thanks and regards.