Sunil, I am continuing to build my IO to the point where my app works well via two nodes. I may abandon building an opensource SAN and just move to an established product.
Our app generates a lot of load through enormous small read and writes eating IO. My follow up question is, if we move to a new name brand san - do we just go after the one with the best IO numbers? We're looking at a IBM shark model or Xitech ICE and I want to make sure I get something that will be good to OCFS2 and IO. Thanks, Bruce A Leggett Director, IT Systems Amscot Financial 813-637-6283 -----Original Message----- From: Sunil Mushran [mailto:sunil.mush...@oracle.com] Sent: Friday, September 18, 2009 4:30 PM To: Bruce Leggett Cc: 'ocfs2-users@oss.oracle.com' Subject: Re: [Ocfs2-users] Two node performance question Bruce Leggett wrote: > The FS performance is only slow from one node. Typically, writes and reads > look good one node at a time, but not two. If concurrent io to the shared device is slow, then this would be expected. > So your recommendation is I need to get throughout/IO boosted at the > iscsi/disk/san level? Optimizing iscsi and upping performance with more / > faster disks etc? Yes. > Are there any OCFS2 options that play into this or is it all iscsi/disks at > this point? The ocfs2 options allow you to tune your performance for different workloads. But it is not going to hide slow concurrent io to the shared device. This Email message and any attachments are confidential. If you are not the intended recipient, please notify Amscot Financial, Inc. immediately by replying to this message and destroy all copies of this message and any attachments.Thank You. _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
