Re: Oddball VFS buffer question
Re: Oddball VFS buffer question
- Subject: Re: Oddball VFS buffer question
- From: Paul Ripke <email@hidden>
- Date: Wed, 19 Nov 2003 09:51:35 +1100
On Wednesday, Nov 19, 2003, at 06:49 Australia/Sydney, Rob McKeever
wrote:
Is there an easy, albeit unsupported way, to disable the VFS buffer
cache for a given volume or mount point?
I realize that any solution to this question is likely to not survive
between kernel updates and could result in very bad things. Ideas?
If support isn't there already (haven't looked at recent xnu), I
would've
thought it wouldn't be too hard to add, given support for F_NOCACHE in
fcntl(2). I can see how something like the AIX 5.1 "mount -o dio ..."
could be handy. We're using it for Oracle DBs, it makes quite a
difference.
With Xserve and Xserve RAID, this "feature" may be somewhat desirable.
Cheers,
--
Paul Ripke
Unix/OpenVMS/TSM/DBA
I love deadlines. I like the whooshing sound they make as they fly by.
-- Douglas Adams
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