Re: Experimental patch for inter-page delay in VACUUM

--On Monday, November 10, 2003 13:40:24 -0500 Neil Conway
<neilc@samurai.com> wrote:

> Larry Rosenman <ler@lerctr.org> writes:
>> You might also look at Veritas' advisory stuff.
>
> Thanks for the suggestion -- it looks like we can make use of
> this. For the curious, the cache advisory API is documented here:
>
> http://www.lerctr.org:8458/en/man/html.7/vxfsio.7.html
> http://www.lerctr.org:8458/en/ODM_FSadmin/fssag-9.html#MARKER-9-1
>
> Note that unlike for posix_fadvise(), the docs for this functionality
> explicitly state:
>
>     Some advisories are currently maintained on a per-file, not a
>     per-file-descriptor, basis. This means that only one set of
>     advisories can be in effect for all accesses to the file. If two
>     conflicting applications set different advisories, both use the
>     last advisories that were set.
BTW, if ANY developer wants to play with this, I can make an account for
them.  I have ODM installed on lerami.lerctr.org (www.lerctr.org is a
CNAME).

LER


--
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 972-414-9812                 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749