-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Jim Perrin Sent: Friday, March 09, 2007 2:55 PM To: CentOS mailing list Subject: Re: [CentOS] Performance problem with CentOS and XFS on EMC
Please don't top post.
Okay. Personally I prefer to get the meat at the top, but I supposed context could be relevant once in a while....
Okay... so you're using 2 different filesystems known to be unsupported in the upstream OS, and you're wondering why you're getting bad performance?
No, I'm wondering why I'm getting such a disparity in performance between direct i/o and cached i/o using two different files systems (same issue on both file systems, different issue than 'why is this file system not performing well/better?').
You appear to be using a hammer to pound screws. You may really want to take a moment to sit back and question the sanity involved in what you're doing.
Ever heard of drywall screws? :-)
One other nit-pick as I'm a little frustrated at this point. PLEASE PROVIDE ALL RELEVANT DATA to those trying to assist you. If you've used other elevators, STATE THAT so that we don't waste our effort telling you something you've already tried.
Apologies - one detail that I overlooked until you reminded me. I'm still relatively new to this project, RHEL/CentOS and so on. I may have mentioned this once or twice before....