Well, I started a thread a while ago about the performance problem which
occurs when you touch the same data twice in the same transaction. It might
be the same issue.

Adrian Roman

----- Original Message -----
From: "Alan McDonald" <alan@...>
To: <ib-support@yahoogroups.com>
Sent: Wednesday, August 07, 2002 3:33 PM
Subject: RE: [ib-support] IB 5.6 performance


> just by coincidence I accidentally added about 20k records to a table the
> other day, then deleted them (delete from table), then backed up the
> database and yep - it took an extraordinary amount of time*thought it was
my
> imagination). It restored in no time flat. I thought it was just a fluke,
or
> me or something else but seing your post here I have to rethink it.
> But how often would you be doing this?
> Alan
> -----Original Message-----
> From: news@... [mailto:news@...]On Behalf Of Paul
> Hope
> Sent: Wednesday, 7 August 2002 22:25
> To: ib-support@yahoogroups.com
> Subject: [ib-support] IB 5.6 performance
>
>
> Hi
>
> Up until now IB performance hasn't been a problem. But strange things
> are
> happening to a new database we are building. The import routine creates
> about 260,000 records in one table.
>
> Having done it I want to delete all the record and start again.
> If I do 'delete from table' followed by a 'select * from table' I would
> expect the latter to take some time because (I believe) it is doing
> garbage
> collection - however I wouldn't expect it to take several hours :-(
>
> Last night I did a 'delete from table' then a backup and restore. The
> backup took 5.5 hours - the restore took 3 minutes!
>
> The server isn't particularly fast (maybe a 300Mhz) but we havn't had
this
> sort of time problem before. The processor is runing at 100% and I
don't
> understand what the memory utilisation is telling me, there looks like
> plenty of free disk space.
>
> Running NT4 sp6a
>
> Could there be an IB problem I can look at - if so where do I look?
>
> Regards
> Paul
>
>
>
>
>
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