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Re: [EP-tech] Manage deposits page loads very slow

They are not the same mysql version, 5.1 on the old VM and 5.7 on the new one. It seems that the mysql on the old VM has MyISAM as the default engine, while the new VM has InnoDB as default. Although almost all tables on the DB are using MyISAM.

On Mon, May 21, 2018 at 12:31 PM John Salter <J.Salter@leeds.ac.uk> wrote:
Is the version of MySQL the same on both VMs?
Do they have the same default engine (e.g. myISAM or InnoDB)?
From: eprints-tech-bounces@ecs.soton.ac.uk <eprints-tech-bounces@ecs.soton.ac.uk> on behalf of Yuri <yurj@alfa.it>
Sent: 21 May 2018 09:55:59
To: eprints-tech@ecs.soton.ac.uk
Subject: Re: [EP-tech] Manage deposits page loads very slow
 
Enable sql logging on mysql and write down the queries it does when
using Manage Deposits. Then disable logging and you can test directly
the queries looking for mysql bottlenecks.

Is the disk enough fast in the new vm? Is there any difference if you
shut down the indexer? Did you migrate also the index database or the
indexer is still running to reindex everything?

Il 21/05/2018 10:26, Emilian Mitocariu ha scritto:
> Hi,
>
> I migrated an eprints instance from version 3.3.7 running on a VM with
> ubuntu 10.04, 1GB RAM and 2 virtual CPUs to the latest eprints version
> 3.3.15 on a VM with ubuntu 16.04, 2.5GB RAM and 2 virtual CPUs. I
> followed the page documented on the eprints wiki for the migration.
>
> There were no problems with loading pages on the old version, but on
> the new server when a user visits the "Manage Deposits" page and has a
> lot of deposits, it takes a while to load the page. For a user with
> 885 deposits, it takes at least 30 seconds.
>
> I compared the mysql configuration on both VMs and it is similar.
> Also, the eprints indexer is running. During the day, apache and mysql
> seems to use more RAM than it did on the old VM.
>
> Does anyone know what could cause the slow page load or at least give
> me some pointers where to look?
>
>
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