Re: Maximum transaction rate

On Fri, 13 Mar 2009, Joshua D. Drake wrote:

> On Fri, 2009-03-13 at 14:00 -0400, Tom Lane wrote:
>> Marco Colombo <pgsql@esiway.net> writes:
>>> You mean some layer (LVM) is lying about the fsync()?
>>
>> Got it in one.
>>
>
> I wouldn't think this would be a problem with the proper battery backed
> raid controller correct?

It seems to me that all you get with a BBU-enabled card is the ability to
get burts of writes out of the OS faster. So you still have the problem,
it's just less like to be encountered.