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Re: [HACKERS] win32 performance - fsync question
- From: "Magnus Hagander" <mha(at)sollentuna(dot)net>
- To: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
- Cc: <pgsql-hackers(at)postgresql(dot)org>, <pgsql-hackers-win32(at)postgresql(dot)org>, "Merlin Moncure" <merlin(dot)moncure(at)rcsonline(dot)com>
- Subject: Re: [HACKERS] win32 performance - fsync question
- Date: Fri, 18 Feb 2005 17:28:09 +0100
- Message-id: <6BCB9D8A16AC4241919521715F4D8BCE4768F8(at)algol(dot)sollentuna(dot)se>
> Magnus prepared a trivial patch which added the O_SYNC flag > for windows and mapped it to FILE_FLAG_WRITE_THROUGH in > win32_open.c. Attached is this trivial patch. As Merlin says, it needs some more reliability testing. But the numbers are at least reasonable - it *seems* like it's doing the right thing (as long as you turn off write cache). And it's certainly a significant performance increase - it brings the speed almost up to the same as linux. //Magnus
Attachment:
o_sync.patch
Description: o_sync.patch
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