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.na...@gmail.com> > Sent: 16-05-2013 14:12 > To: "Rafał Radecki" <radecki.ra...@gmail.com> > Cc: "mysql@lists.mysql.com" <mysql@lists.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 > > Regards > > Claudio > -- Reindl Harald the lounge interactive design GmbH A-1060 Vienna, Hofmühlgasse 17 CTO / CISO / Software-Development p: +43 (1) 595 3999 33, m: +43 (676) 40 221 40 icq: 154546673, http://www.thelounge.net/ http://www.thelounge.net/signature.asc.what.htm
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