Some databases engines have their own memory management by updating an offset table to
arrange memory chunks sp they appear
contiguous at the API level but not in physical memory. Thus you can add in records
at position zero and no memory is moved; only
the record management table is updated. I'd like to hear a comment from Palm on this
one.
Steve
Mitch Fawcett wrote:
> The code for unmunging the 64k chunks... could that be made more efficient?
> I'm thinking for example that every time you insert a record into the
> database the OS goes through each record above it and bumps the index. That
> means that in a worse case, if you added every record at index zero, you
> would force the OS to loop through every record you had previously added;
> proportionally increasing the amount of time it takes to add a new record.
> On the other hand, if you add the record to the end of the database instead,
> you eliminate all that OS looping. Here's hoping I haven't just stated the
> obvious.
>
> Mitch Fawcett
> Tapn'see Software
> (Home of SuperList2)
> http://www.tapnsee.com
>
> >-----Original Message-----
> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> >Sent: Friday, May 19, 2000 5:46 PM
> >To: Palm Developer Forum
> >Subject: Sending large PDB files to the Palm
> >
> >
> >I have a large pdb file with over 15000 records that i need to send to the
> >palm
> >I have tried several different methods but all seem to take upwards of an
> >hour
> >
> > I have tried using the palm install tool,
> > I also wrote two conduits, one to download the records individually
> > and another that combines several records into 64k chunks
> > The last conduit hotsyncs very fast but then requires the palm to
> >process
> >the
> > records which again takes over an hour
> >
> > Is there any way to do this quickly? The table is going in one
> direction
> >
> >from the pc to the palm
> >
> >--
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> >
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> >
>
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