Re: Some ideas for FreeBSD
- From: "Heiko Wundram (Beenic)" <wundram@xxxxxxxxxx>
- Date: Fri, 8 Feb 2008 18:24:03 +0100
Am Freitag, 8. Februar 2008 17:54:03 schrieb millueradfa@xxxxxxxxx:
Well, actually, these are file backed swap devices.
You can do both file and memory backed devices. this
allows you to have a swap file on the hard disk and
mount it.
As I already wrote in another part of this thread: please explain to me why it
should be faster to have a file backed md set up as swap than a dedicated
swap partition (because there's at least two more levels of indirection
involved).
I can clearly see the need for file backed swap in special cases (for example,
where you need RAM desperately, for example for a compile, but cannot add
another partition to a system), but no matter what, it will never be faster
than a swap partition. And that was what the original poster of this
sub-thread suggested (and as such, I took it that he was referring to
memory-backed mds, because file-backed mds are never faster than "raw" access
to a hard-disk).
So, I still stand by my first assessment: the idea to use an md as swap is
stupid, at least from a performance standpoint.
--
Heiko Wundram
Product & Application Development
_______________________________________________
freebsd-questions@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscribe@xxxxxxxxxxx"
- References:
- Re: Some ideas for FreeBSD
- From: millueradfa@xxxxxxxxx
- Re: Some ideas for FreeBSD
- Prev by Date: Re: why does linux-base-f7 exist if the binary compatibility is to a kernel too old to run it? (and how to change that?)
- Next by Date: Re: why does linux-base-f7 exist if the binary compatibility is to a kernel too old to run it? (and how to change that?)
- Previous by thread: Re: Some ideas for FreeBSD
- Next by thread: Re: Some ideas for FreeBSD
- Index(es):
Relevant Pages
|
