From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Robert Schnabel <schnabelr(at)missouri(dot)edu> |
Cc: | cb <cb(at)mythtech(dot)net>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: Is Diskeeper Automatic Mode safe? |
Date: | 2009-11-16 19:42:42 |
Message-ID: | 603c8f070911161142j6dd18fb3w4fbb72fa12d01a41@mail.gmail.com |
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Lists: | pgsql-performance |
On Mon, Nov 16, 2009 at 1:11 PM, Robert Schnabel <schnabelr(at)missouri(dot)edu> wrote:
> cb wrote:
>>
>> I'm curious if anyone else has used Diskeeper's Automatic Mode in
>> combination with PostgreSQL to defrag and keep the drive defragged while
>> PostgreSQL is actually running.
>>
>> Thanks!
>>
>> -chris
>> <www.mythtech.net>
>>
>
> I've been a Diskeeper customer for about 10 years now and consider it 'must
> have' software for Windows machines. I do not work for them nor get paid by
> them, I just find the software incredibly valuable. I'm running XP-64bit
> with 8.4.0 and Diskeeper does a wonderful job of defragmenting the database
> tables when they get fragmented. I just checked their website and the 2009
> version is still listed. I've been running the 2010 Enterprise Server
> version for about a week and I can tell you that it's great! (I'm actually
> running it on 3 servers but only mine has PG) The main difference with the
> 2010 version is something that they call IntelliWrite. As everyone knows,
> one of the biggest problems with the Windows OS is that it lets
> fragmentation occur in the first place. This new IntelliWrite actually
> prevents the fragmentation from occurring in the first place (or at least
> the vast majority of it). The auto defrag takes care of the rest. I can
> attest to this actually working in real life scenarios. The other thing
> Diskeeper has is something they call I-FAAST. What this does is monitor
> file usage and moves the most heavily accessed files to the fastest part of
> the drive. My db is on an Adaptec 52445 with 16 ST373455SS (15K5) in RAID5
> and Diskeeper defrags and moves pretty much everything in \data\base to the
> outer part of the drive. So the short answer is yes, I have it running with
> PostgreSQL and have not had any problems.
Have you unplugged the power cord a few times in the middle of heavy
write activity?
...Robert
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