Re: Disk I/O performance.

From: Green, Simon (Simon.Green_at_EU.ALTRIA.COM)
Date: 11/11/04

  • Next message: Stephen Snape: "Re: MPIO for Hitachi HDS" 
    Date:         Thu, 11 Nov 2004 11:00:35 +0100
To: aix-l@Princeton.EDU

    There is no particular threshold. The more files you have in a directory,
    the longer it will take to list everything. You must simply experiment
    until you find an acceptable balance.

    I would be inclined to start from the other end. Figure out what files you
    don't need and archive/delete them every day. If that doesn't help, be more
    aggressive.

    Separating the various types of files into different directories would help. 

    --
Simon Green
Altria ITSC Europe Ltd
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> -----Original Message-----
> From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On
> Behalf Of Fernandez Garay Jorge
> Sent: 10 November 2004 19:43
> To: aix-l@Princeton.EDU
> Subject: Re: Disk I/O performance.
>
>
> We have PeopleSoft running on a S80 box.
> Daily, it creates a very large amount of files and dirs(logs
> and reports).
> About 500000 files are created over a 2 weeks period, within a JFS
> filesystem
> created for that purpose.
>
> In such situation, launching a ls -l or a recursive 'find' on those
> dirs, becomes a dark nightmare.
>
> We are trying to evaluate a thresshold in the amount of files
> (used inodes),
> to clean older files/dirs, up to that thresshold
  • Next message: Stephen Snape: "Re: MPIO for Hitachi HDS"

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