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Re: Free WAL caches on switching segments

From: Mark Kirkwood <markir(at)paradise(dot)net(dot)nz>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, daveg <daveg(at)sonic(dot)net>, ITAGAKI Takahiro <itagaki(dot)takahiro(at)lab(dot)ntt(dot)co(dot)jp>, pgsql-patches(at)postgresql(dot)org
Subject: Re: Free WAL caches on switching segments
Date: 2006-02-14 05:06:04
Message-ID: 43F1653C.2060101@paradise.net.nz (view raw or flat)
Thread:
Lists: pgsql-patches
Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> 
>>Yes, your vote counts very much.  What if I apply the patch, but mark
>>the posix_advise() call in a NOT_USED macro block, so it will be ready
>>for people to test, but will not be used until we are sure.
> 
> 
> Sounds like a recipe for ensuring it never will be tested.  What's
> needed here is some actual tests, not preparation...
> 

Gotta second that.

Does the OP have a test scenario that those of us with appropriate OS's 
could try? Come to think of it, what are the appropriate OS's? (I see 
NetBSD mentioned so I suppose all the *BSDs, but what others?).

Cheers

Mark

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