| From: | Magnus Hagander <magnus(at)hagander(dot)net> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | posix_fadvsise in base backups |
| Date: | 2011-09-24 15:08:17 |
| Message-ID: | CABUevExiw2RTx0dWKShKWmgL7gGRaGBpi+0=E+EkGXPZhAgNig@mail.gmail.com |
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| Lists: | pgsql-hackers |
Attached patch adds a simple call to posix_fadvise with
POSIX_FADV_DONTNEED on all the files being read when doing a base
backup, to help the kernel not to trash the filesystem cache.
Seems like a simple enough fix - in fact, I don't remember why I took
it out of the original patch :O
Any reason not to put this in? Is it even safe enough to put into 9.1
(probably not, but maybe?)
--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/
| Attachment | Content-Type | Size |
|---|---|---|
| base_backup_fadvise.patch | text/x-patch | 682 bytes |
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