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Performace question - Sun Solaris

scott wrote: > if you install 1 GB RAM, you better increase you swap file as well, > usually SUN requirs customer has swap partition as double size of RAM, > for two coredump files, for your case, you may just need 1 GB swap > file Is that right? -am 2003...

  1. #1

    Default Re: Performace question

    scott wrote:
    > if you install 1 GB RAM, you better increase you swap file as well,
    > usually SUN requirs customer has swap partition as double size of RAM,
    > for two coredump files, for your case, you may just need 1 GB swap
    > file
    Is that right?

    -am 2003
    Anthony Mandic Guest

  2. #2

    Default Re: Performace question

    any guess as to the number of messages you're processing at the time?
    Have you looked at the output of vmstat -S to check on swap (si/so)?
    i'd also be curious about the # of iops you're seeing when the
    utilization's at 100%.... i wouldn't normally recommend using a single
    disk system as a mail server if you have high volume...

    regards

    dave

    [email]gmolakalhotmail.com[/email] (Gopala) wrote in message news:<c55c3d6f.0306231539.535a6aa1posting.google. com>...
    > It is a common thing that we see with UFS filesytems. System seems to
    > be heavily in I/O waits. Try to change your FS to VxFS and try again.
    > Unless you are sure that you have high volume of mail, I dont think
    > memory is a problem.
    >
    > Can someone from SUN comment about this High I/O waits seen on UFS &|
    > DiskSuite configurations ??
    >
    > Thanks
    > Dexthor.
    >
    > "Viper" <viperatnospamviperdotzadotnet> wrote in message news:<3ef60d16$0$231hades.is.co.za>...
    > > Hi,
    > >
    > > I am running a blade 100 as a mail server with 128MB ram,
    > > I am using sendmail with Trend VirusWall and eManager I have noticed
    > > that after some time my io will increase to around 80/90% utilization.
    > > Making the machine very slow to user intervention.
    > > if I do a iostat -x 5 the drive will remain on 100 until I've stopped my
    > > mail
    > > software. While running top I noticed that my swap file was 500MB
    > > and I only have 1mb of available ram.
    > > I have placed an order for 1gb of ram, I would like to know if you think
    > > adding more ram will solve my problem.
    > >
    > > Would the io be so high due to the large swap file and not enough free ram?
    > >
    > > Thanks
    Dave Durbin Guest

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