Re: Sizing JFSLog
From: Theresa Sarver (tsarver.IFMC_at_SDPS.ORG)
Date: 06/26/03
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Date: Thu, 26 Jun 2003 16:10:38 -0400 To: aix-l@Princeton.EDU
Thank you all for your feedback - I guess I wasn't aware that there wasn't a "hard-fast rule" for this paramete? Anyway all the responses have been most helpful.
So thank you again;
Theresa
>>> aixgeek@YAHOO.COM 06/26/03 02:15PM >>>
Bah.
If you have a massive amount of file system meta
changes, than 2MB for 1GB is a good idea, but that
assumes METADATA changes (i.e., massive file creations
and deletions).
If this is a database server (create file once and
then never change its STRUCTURE), then you can get by
with a minimally-sized log device (one logical
partition) for your entire volume group.
--- Bob.Kelley@BRINKSINC.COM wrote:
> yes......a good rule of thumb is 2MB per 1G
>
> .....you should also include performance
> considerations when designing your
> logs, ie striping the logs for improved IO
> performance
>
> Bobby Kelley
> Sr. AIX/UNIX Administrator
>
>
>
>
> |---------+---------------------------->
> | | Theresa Sarver |
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> | | 06/26/2003 11:22 |
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> | To: aix-l@Princeton.EDU
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> | cc:
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> | Subject: Sizing JFSLog
>
> |
>
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>------------------------------------------------------------------------------------------------------------------------------|
>
>
>
>
> Hi All;
>
> What is the proper size of the JFSLog on an AIX
> system (either 433 or 5L)?
>
> I have always set it at the default of 1PP.
> However, I have a colleague
> that is saying that "IBM recommends a 2 MB log size
> per 1 GB of file system
> space."
>
> I can't find any documentation stating that either
> one is correct...does
> anyone know where I might find some?
>
> Thank you!
> Theresa
>
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- Previous message: Lloyd Dieter: "Re: Can't locate filesets"
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