Re: [OT] Mail hangs real-time processes
Re: [OT] Mail hangs real-time processes
- Subject: Re: [OT] Mail hangs real-time processes
- From: Jeff Moore <email@hidden>
- Date: Thu, 8 Jan 2004 14:43:38 -0800
As far as I know, journaling is a per volume kind of thing so you can't
do it on an individual file. You might post the question to Darwin-Dev
and see what sort of response it gets.
That said, if all you're doing is reading from files, then I don't
think that journaling has any effect at all. The time it would come up
is when it is modifying files I think.
On Jan 8, 2004, at 1:33 PM, Herbie Robinson wrote:
I hadn't thought about journaling. It is true that for certain usage
patterns, journaling will bleed some performance away. But I don't
think that it will be a whole lot typically. However, I haven't seen
any sort of investigation into how much performance gets bled away. I
guess the best thing to do is to use Disk Utility and turn it off and
see if performance gets any better.
Is there a way to turn journaling off on a per file basis. Or put a
file into a mode where disk extent allocation is journaled, but not
the data updates?
--
Jeff Moore
Core Audio
Apple
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