more info : Poor Performance / ES47

From: Regis Carlier <regis.carlier_at_apx.fr>
Date: Sat, 07 Feb 2004 18:56:46 +0100

Hi ,

I already made new_wire_settings to 0 but I had no changes.
I don't always have acces to the machine and I wonder if the Pb was not with
the filesystem.

On the ES47 , I've a smartarray 5 with a Raid 5 volume for the database on
AdvFs

on the DS20 , I've a RA3000 with a raid5 volume for the database but in Raw
Device .

could it be the Pb ?

I effectively also suspect a vm Pb. I don't know if , with sybase , it's
preferable
to use ssm_threshold to 0 and to set gh-chunks or if I must leave
ssm-threshold to the default value.


ESC:wq

--
Régis Carlier, APX Computer, 31 rue Denis Papin,
Parc Club des Prés, 59650 Villeneuve d'Ascq
Tel: +33320190015 , Fax: +33320190010 ,
Gsm: +33686943971 , Mail: Regis.Carlier_at_apx.fr
-----Message d'origine-----
De : Michael W [mailto:mikew_at_pvbb.net]
Envoyé : vendredi 6 février 2004 21:11
À : regis.carlier_at_apx.fr
Objet : Re: Poor Performances / ES47
I would look at the vm settings.. We found that new_wire_method=0 runs much
faster with our database than the dec default of 1
It requires a reboot to make the change..
----- Original Message -----
From: "Regis Carlier" <regis.carlier_at_apx.fr>
To: "Tru64-Unix-Managers_at_Ornl. Gov" <tru64-unix-managers_at_ornl.gov>
Sent: Friday, February 06, 2004 11:53 AM
Subject: Poor Performances / ES47
>
> Hi ,
>
> I've installed an ES47 2 CPU under 5.1B PK3 NHD7 to replace a DS20 with
> sybase.
> Disks are managed by a smartarray5304
>
> My Pb is that the performance of the ES47 is very bad compared to the
> initial DS20
>
> The machine is about 2 times slower than the DS20.
>
> Are there specific configurations for the ES47 tuning ?
>
> I modified the sysconfigtab 'as usually' to optimize but nothing helps.
>
> I don't know sybase , generally I configure systems for Oracle.
>
> Is there a specific tuning for Sybase / EV7 ??
>
> TIA , Reg/
>
> ESC:wq
> --
> Régis Carlier, APX Computer, 31 rue Denis Papin,
> Parc Club des Prés, 59650 Villeneuve d'Ascq
> Tel: +33320190015 , Fax: +33320190010 ,
> Gsm: +33686943971 , Mail: Regis.Carlier_at_apx.fr
>
>

Received on Sat Feb 07 2004 - 18:06:15 NZDT