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Re: Temporary 'lock-up' under heavy write, MegaRAID RAID-5



Am Mittwoch 09 November 2005 12:25 schrieb Joost Kraaijeveld:
> On Wed, 2005-11-09 at 11:46 +0100, Dave Ewart wrote:
> > The above system is incredibly fast under almost all conditions, except
> > when writing very large files (say, 100s of MB, or even GB).  When
>
> ....
>
> > Any other suggestions or reports of similar experiences?
>
> Sorry, no solution, but a me too post. I have similar experience with a
> 2-way Opteron, 3Ware9500 SATA RAID5 with 5 disks: short updateing
> transactions with PostgreSQL fly, long updates start fast but after a
> few seconds everthing locks up, and the update lasts forever.
>
Adaptec 3410s had at starting  the same troble. Also Raid 5 with 5 disks.
By updateing the "Bios" of the raid-controller it is better.
Dual Xeon

Ryven

>
>
> --
> Groeten,
>
> Joost Kraaijeveld
> Askesis B.V.
> Molukkenstraat 14
> 6524NB Nijmegen
> tel: 024-3888063 / 06-51855277
> fax: 024-3608416
> e-mail: J.Kraaijeveld@Askesis.nl
> web: www.askesis.nl



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