[rhn-users] RHEL5 Ram and Disk Partiton
Lamon, Frank III
Frank_LaMon at csx.com
Wed Oct 17 18:48:19 UTC 2007
Do not waste disk space with 64GB of swap! If you are using 64GB of swap you need to buy more RAM. Depending on the app the use of swap could absolutely kill your performance or even app stability (think Oracle). 8-16GB of swap would be more than enough.
-----Original Message-----
From: rhn-users-bounces at redhat.com on behalf of Samer Azmy
Sent: Wed 10/17/2007 2:41 PM
To: Discussions about Red Hat Network (rhn.redhat.com)
Subject: Re: [rhn-users] RHEL5 Ram and Disk Partiton
Gentlemen,
for the Size of the SWAP it should be double the RAM
Quoted from Redhat site
"A swap partition (at least 32MB) - swap partitions are used to support
virtual memory. In other words, data is written to a swap partition when
there is not enough RAM to store the data your system is processing. The
size of your swap partition should be equal to twice your computer's RAM, or
32MB, whichever amount is larger."
Reference Link :
http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/install-guide/s1-diskpartitioning.html
Kind Regards
Samer Azmy
On 10/17/07, Florez, Nestor <NFlorez at sdcwa.org> wrote:
>
> Thanks :-)
>
>
>
> -----Original Message-----
> From: rhn-users-bounces at redhat.com on behalf of Kyle Wilcox
> Sent: Wed 10/17/2007 10:59 AM
> To: Discussions about Red Hat Network (rhn.redhat.com)
> Subject: Re: [rhn-users] RHEL5 Ram and Disk Partiton
>
> A few of our RAID5 configurations, old and new, for your consideration:
>
> Size Used Free %
> Mount point
> /dev/sda1 190M 89M 92M 50% /boot
> /dev/mapper/vg0-lv0 4.9G 1.7G 3.0G 37% /
> /dev/mapper/vg0-lv1 2.9G 1.8G 1.1G 63% /home
> /dev/mapper/vg0-lv5 2.9G 271M 2.5G 10% /opt
> /dev/mapper/vg0-lv2 2.0G 301M 1.6G 16% /tmp
> /dev/mapper/vg0-lv3 7.7G 4.6G 2.8G 63% /usr
> /dev/mapper/vg0-lv4 5.8G 2.4G 3.2G 43% /var
> /dev/mapper/vg0-lv6 522G 109G 387G 22% /work
>
> Size Used Free %
> Mount point
> /dev/sda1 99M 17M 78M 18% /boot
> /dev/mapper/vg0-lv0 5.7G 3.2G 2.3G 59% /
> /dev/mapper/vg0-lv2 19G 1.4G 17G 8% /home
> /dev/mapper/vg0-lv6 3.8G 72M 3.6G 2% /opt
> /dev/mapper/vg0-lv3 9.5G 151M 8.9G 2% /tmp
> /dev/mapper/vg0-lv4 19G 3.1G 15G 17% /usr
> /dev/mapper/vg0-lv5 9.5G 3.2G 5.9G 36% /var
> /dev/mapper/vg0-lv7 472G 223M 447G 1% /work
>
> Size Used Free
> % Mount point
> /dev/sda6 1012M 406M 555M 43% /
> /dev/sda2 99M 36M 59M 38% /boot
> /dev/sda5 29G 22G 6.3G 78% /home
> /dev/sda7 1012M 33M 928M 4% /tmp
> /dev/sda9 8.2G 4.0G 3.8G 52% /usr
> /dev/sda10 494M 303M 166M 65% /var
> /dev/sda3 385G 283G 83G 78% /work
>
>
> Florez, Nestor wrote:
> > Swap has to be (ram + 2) if greater than 2 Gig
> >
> > I am glad REHL5 can handle 32 gigs of ram
> >
> > I will be using Raid 5 with 5 300 Gig hard drives.
> > My question is more of what is recommended
> > for /, /var, /usr/local originally.
> >
> >
> > Thanks,
> >
> > Nestor :-)
> >
> >
> >
> > -----Original Message-----
> > From: rhn-users-bounces at redhat.com on behalf of Tiago Cruz
> > Sent: Wed 10/17/2007 9:54 AM
> > To: Discussions about Red Hat Network (rhn.redhat.com)
> > Subject: Re: [rhn-users] RHEL5 Ram and Disk Partiton
> >
> > 64 GB do Swap is spend of disk.
> >
> > 1 GB or 2 GB it's a good number for 99,9% of situations.
> >
> >
> > On Wed, 2007-10-17 at 18:49 +0200, Samer Azmy wrote:
> >> Yes , It does support 32G of RAM
> >>
> >> the partitions size are up to u and ur applications just make the SWAP
> >> double the RAM
> >> you may make a big var or opt
> >>
> >>
> >> On 10/17/07, Florez, Nestor <NFlorez at sdcwa.org> wrote:
> >> Can RHEL 5 handle 32 Gig of RAM?
> >>
> >>
> >> Recommendation on partiton sizes for a 300 Gig Hard Drive?
> >>
> >> Thanks,
> >>
> >> Nestor :-)
> >>
> >>
> >>
> >> _______________________________________________
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> >> rhn-users at redhat.com
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> >>
> >>
> >>
> >> --
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> --
>
> Kyle Wilcox
> NOAA Chesapeake Bay Office
> 410 Severn Avenue
> Suite 107A
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> office: (410) 295-3151
> Kyle.Wilcox at noaa.gov
>
> "It is from the wellspring of our despair and the places
> that we are broken that we come to repair the world."
> - Murray Waas
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