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Subject: Re: alligned Vs Non Alligned log writes ..
Date: Thu, 9 Dec 2004 10:37:17 -0800
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Yes, the concept exists on Linux.

You need to run the hdparm utility.

----- Original Message ----- 
From: "Mike Matrigali" <mikem_app@sbcglobal.net>
To: "Derby Development" <derby-dev@db.apache.org>
Sent: Thursday, December 09, 2004 10:04 AM
Subject: Re: alligned Vs Non Alligned log writes ..


> If possible could the people submitting the results let us know
> the type of disk on the machine.  At least scsi vs. ide.  Speed of
> disk would be nice too.  And at least on windows machines if
> "write cache" is enabled for the disk or not - I don't know if this
> concept exists on linux..
>
> Daniel John Debrunner wrote:
>
> >
> >
> >>>>It would be great if  some one can run this test on other platforms
and
> >>>>post the results to the list.
> >
> >
> > On Suse Linux, with an old Dell machine (2cpu 733Mhz Pentium) I see no
> > real difference between aligned and non-aligned writes.
> > I used Sun's 1.4.2 & 1.5.0 and IBM's 1.4.2 vms
> >
> > Dan.