| From: | Scott Marlowe <smarlowe(at)g2switchworks(dot)com> |
|---|---|
| To: | Michael Stone <mstone+postgres(at)mathom(dot)us> |
| Cc: | Jeff Trout <threshar(at)torgo(dot)978(dot)org>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Slow restoration question |
| Date: | 2006-05-03 16:07:15 |
| Message-ID: | 1146672434.22037.38.camel@state.g2switchworks.com |
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| Thread: | |
| Lists: | pgsql-performance |
On Wed, 2006-05-03 at 10:59, Michael Stone wrote:
> On Wed, May 03, 2006 at 09:19:52AM -0400, Jeff Trout wrote:
> >Bonnie++ is able to use very large datasets. It also tries to figure
> >out hte size you want (2x ram) - the original bonnie is limited to 2GB.
>
> Yes, and once you get into large datasets like that the quality of the
> data is fairly poor because the program can't really eliminate cache
> effects. IOW, it tries but (in my experience) doesn't succeed very well.
I have often used the mem=xxx arguments to lilo when needing to limit
the amount of memory for testing purposes. Just google for limit memory
and your bootloader to find the options.
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