Hi Drexx,

Have you saved typical performance outputs (top, free, ps -aux, dmesg) for
analysis?

Regards,

On Mon, Jun 2, 2008 at 2:33 AM, thad <[EMAIL PROTECTED]> wrote:

> Hi Drexx,
>
> Semi-OT reply but could be related.Are you using LVM?
>
> If you are using LVM, I got same issue on another UNIX OS (AIX) and we
> found out the system is hitting paging logical volume (lv) (read
> pegging to 80-100%) instead of the lvs for Oracle. We re-layout the
> paging into 3 separate lv of equal size and do some virtual memory
> parameter and kernel tunings as per that OS and Oracle recommendation.
>
> Look at your iostat which file system its hitting and  you could do
> perf tuning as per RHEL recommendation. NMON would be a great tool to
> use it also works on Linux and we also use filemon(though not sure if
> this available for Linux) parse its output with a perl utility
> filemon.pl and thats when we i identified that our wait state is
> hitting the paging and also confirmed that its not bottlenecking on
> physical volume layer.
>
>
>
> hth,
>
> Thad
>
> On Sun, Jun 1, 2008 at 1:05 PM, Drexx Laggui [personal]
> <[EMAIL PROTECTED]> wrote:
> > 02May2008 (UTC +8)
> >
> > The wait states of Red Hat Enterprise v5.1 x86_64 is unbearable with
> > CryptLUKS (on SATA2 1TB HDD's) --and I haven't even installed VMware
> > 1.0.5 yet! It was so terrible that my machine would hang several
> > times, and eventually crash. 4GB RAM and 2.4GHz quad-core CPU were
> > whipped. Used top and iostat to monitor what I could. Anybody
> > experienced the same thing?
> >
> > Thought I'd migrate from Fedora 8 to RHEL 5. Bad move that cost me a
> > weekend++. I'm back to Fedora 9 now though, so everything has been
> > working like a charm again, even VMware 1.0.6 (with Windows XP SP1,
> > Solaris 10, OpenSolaris 05.2008, SLAX's BackTrack v3, all operational
> > simultaneously).
> >
> >
> > Drexx Laggui  -- CISA, CISSP, CFE Associate, ISO27001 LA, CCSI, CSA
> > http://www.laggui.com  ( Singapore / Manila / California )
> > Computer forensics; Penetration testing; QMS & ISMS developers;
> K-Transfer
> > PGP fingerprint = 6E62 A089 E3EA 1B93 BFB4  8363 FFEC 3976 FF31 8A4E
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>
>
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Xander Solis
xrsolis.blogspot.com
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