Re: [PERFORM] Effects of setting linux block device readahead size

2008-09-13 Thread david
On Fri, 12 Sep 2008, James Mansion wrote: Scott Carey wrote: Consumer drives will often read-ahead much more than server drives optimized for i/o per second. ... The Linux readahead setting is _definitely_ in the kernel, definitely uses and fills the page cache, and from what I can gather, si

Re: [PERFORM] Choosing a filesystem

2008-09-13 Thread david
On Fri, 12 Sep 2008, Merlin Moncure wrote: On Fri, Sep 12, 2008 at 5:11 AM, Greg Smith <[EMAIL PROTECTED]> wrote: On Fri, 12 Sep 2008, Guillaume Cottenceau wrote: That's the main thing, and nothing else you can do will accelerate that. Without a useful write cache (which usually means RAM with