AW: JFS2 - good or bad?
From: Uwe Gründel (uwe.gruendel_at_ITCONCEPTS.DE)
Date: 07/13/04
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Date: Tue, 13 Jul 2004 08:32:46 +0200 To: aix-l@Princeton.EDU
Hallo Simon
My experience is, that you will decrease your Performance using jfs2 together with 32-bit kernel.
Since all our system run the 64-bit kernel we only use jfs2 for new filesystems, without any problems.
Uwe Gruendel
-----Ursprüngliche Nachricht-----
Von: Green, Simon [mailto:Simon.Green@EU.ALTRIA.COM]
Gesendet: Montag, 12. Juli 2004 15:58
An: aix-l@Princeton.EDU
Betreff: JFS2 - good or bad?
I'm interested to know what people think of the new JFS2.
I know that it increases the limits on file and filesystem size, but if one
doesn't need this extra capacity are they worth using? I've seen vague
claims of performance improvements: any truth in this?
I'm not about to go changing my existing filesystems - far too much effort!
- but I want to know whether to consider them for new installs, and for any
new filesystems I create.
I'd be particularly interested in any experience using them with Oracle
tablespaces.
I also have a couple of questions to which I couldn't find ready answers.
Can a JFS2 and a JFS use the same log, or do you need a separate log for
each type of filesystem?
If you have an imbedded log in a JFS2, can you increase its size later, if
necessary?
-- Simon Green Altria ITSC Europe Ltd AIX-L Archive at https://new-lists.princeton.edu/listserv/aix-l.html <https://new-lists.princeton.edu/listserv/aix-l.html> New to AIX? http://publib-b.boulder.ibm.com/redbooks.nsf/portals/UNIX <http://publib-b.boulder.ibm.com/redbooks.nsf/portals/UNIX> N.B. Unsolicited email from vendors will not be appreciated. Please post all follow-ups to the list.
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