From: Date: May 10 2005 1:15am
Subject: RE: Dual Opteron, linux kernels, 64 bit, mysql 4.1, InnoDB
List-Archive: http://lists.mysql.com/mysql/183837
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> -----Original Message-----
> From: Richard Dale [mailto:richard@stripped]=20
> Sent: Sunday, May 08, 2005 9:37 PM
> To: mysql@stripped
> Subject: Dual Opteron, linux kernels, 64 bit, mysql 4.1, InnoDB
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> A new server is about to arrive here and will have have 8x15K=20
> RPM spindles, dual Opteron processors and 4GB of RAM, and=20
> will have around 100GB of database (primarily stock market=20
> prices) - the SCSI controller will also have battery-backed=20
> RAM too.  InnoDB will be used exclusively.
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> I've searched the list and seen varying reports of which=20
> Linux kernels work best etc.
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> I'd be intersted to know the following:
> a) Which 64 bit Linux distributions are good for the task?

       Suse 8.1 2.4.21-215-smp #1 SMP Tue Apr 27 16:05:19 UTC 2004
x86_64 unknown

> b) Which 64 bit Linux distributions are bad for the task?

	2.6 the IO sceduler is still messed up.
      RedHat AS / Suse 9.x are messed up as well

> c) Any comments on kernels, particularly with regard to 64=20
> bit support and schedulers?  Any problems with the latest=20
> kernels (2.6.11 & 2.6.12-rcX)?

> d) Any recommendations for RAID volume setup

Use RAID-10 split the disks evenly across each channel


> e) Any MySQL optimisations for multiple spindles, onboard=20
> caching, stripe sizes, RAID5 vs RAID10.

    Don't use RAID5, use Reiser FS if your using SUSE

> f) Any MySQL reliability settings to take into account the=20
> battery-backed RAM on the RAID controller?
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> I'm happy to collate the responses into a summary too.
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> I'm aware of the following discussions which describes a=20
> reasonably grunty Dual AMD system with a similar=20
> configuration to mine:
> http://meta.wikimedia.org/wiki/Hardware_ordered_April_2005
> http://meta.wikimedia.org/wiki/Hardware_order_May_2004
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> Best regards,
> Richard Dale.
> Norgate Investor Services
> - Premium quality Stock, Futures and Foreign Exchange Data for
>   markets in Australia, Asia, Canada, Europe, UK & USA -=20
> www.premiumdata.net
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