Mike,
On 11/15/05 6:55 AM, "Michael Stone" <mstone+postgres(at)mathom(dot)us> wrote:
> On Tue, Nov 15, 2005 at 09:33:25AM -0500, Luke Lonergan wrote:
>> >write performance is now up to par with the best cards I believe. We
>> >find that you still need to set Linux readahead to at least 8MB
>> >(blockdev --setra) to get maximum read performance on them, is that your
>
> What on earth does that do to your seek performance?
We¹re in decision support, as is our poster here, so seek isn¹t the issue,
it¹s sustained sequential transfer rate that we need. At 8MB, I¹d not
expect too much damage though the default is 1.5MB.
- Luke
>