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From: Reindl Harald (h.reindlthelounge.net)
Date: Thu May 16 2013 - 04:08:44 CDT
Am 16.05.2013 11:01, schrieb Vikas Shukla:
> The best value for innodb buffer pool size is considered to be 60 to 70 percent of ram.
> So in your case, this must be around 4 gb.
> That would work better.
hwo would a innodb_buffer_pool larger than the whole database
make anything better? the best value is as large as the
expected dataset, more is wasting system ressources
> -----Original Message-----
> From: "Claudio Nanni" <claudio.nannigmail.com>
> Sent: 16-05-2013 14:12
> To: "Rafał Radecki" <radecki.rafalgmail.com>
> Cc: "mysqllists.mysql.com" <mysqllists.mysql.com>
> Subject: Re: Innodb innodb_buffer_pool_size?
> Hi Rafal,
>> I am trying to set the best value for innodb_buffer_pool_size. My system
> has 6GB of ram.
>> My question: how to tell if my innodb_buffer_pool_size is ok?
> If this is a MySQL dedicated server,
> In your case I would set it to 2GB-3GB.
> You will have the whole data in RAM now and for some time.
>> Does Buffer pool hit rate 1000 / 1000 mean that I can lower it?
> No. It means it is doing fine. And if you don't need RAM for anything else
> why lower it?
>> Does Free buffers 0 mean that I should make it larger?
> No. InnoDB will always try to allocate each block in the buffer pool.
>> Eventually what else to check?
> (a) mysql> SELECT engine,sum(data_length)/1024/1024 as
> DATA_MB,sum(INDEX_LENGTH)/1024/1024 as INDEX_MB FROM
> information_schema.tables GROUP BY engine;
> To check the real size of the dataset.
> (b) Note: mysql-server-5.0.58 you should upgrade to latest 5.0.96
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