| From: | Mitsumasa KONDO <kondo(dot)mitsumasa(at)gmail(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | pg_fallocate |
| Date: | 2013-10-31 13:16:44 |
| Message-ID: | CADupcHW1POmSuNoNMdVaWLTq-a3X_A3ZQMuSjHs4rCexiPgxAQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi,
I'l like to add fallocate() system call to improve sequential read/write
peformance. fallocate() system call is different from posix_fallocate()
that is zero-fille algorithm to reserve continues disk space. fallocate()
is almost less overhead alogotithm to reserve continues disk space than
posix_fallocate().
It will be needed by sorted checkpoint and more faster vacuum command in
near the future.
If you get more detail information, please see linux manual.
I go sight seeing in Dublin with Ishii-san now:-)
Regards,
--
Mitsumasa KONDO
NTT Open Source Software
| Attachment | Content-Type | Size |
|---|---|---|
| pg_fallocate_v0.patch | application/octet-stream | 3.6 KB |
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