Re: Filesystem blocksize for archive logs on AIX
- From: Chris Taylor <christopherdtaylor1994@xxxxxxxxx>
- To: dbvision@xxxxxxxxxxxx
- Date: Tue, 29 Oct 2013 09:32:59 -0500
This is the first time (I think) I've heard of performance degradation due
to filesystem block size not matching. Is there some guidance (whitepapers
etc) on this? I should probably buff up on some of that *if* there is a
large penalty involved.
Thanks,
Chris
On Tue, Oct 29, 2013 at 4:18 AM, Nuno Souto <dbvision@xxxxxxxxxxxx> wrote:
> On 29/10/2013 3:00 AM, Rich Jesse wrote:
>
> What does destroy the performance is to use a file system block size
> larger than the db block size.
> No danger of that with JFS2 and db_block_size=8K! :)
>
> But a clear danger of that, if using std redos (512) and a default file
> system blocksize of 4K,
> as the other poster pointed out. That's when one has to match things.
> One way or the other.
>
>
>
>
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