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From:Krishna Chandra Prajapati Date:May 13 2008 9:03am
Subject:Re: Data Modelling
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Hi,

MyISAM is being used on production server. It applies table level locking.
From mytop view, I see that the table gets locked very frequently for 5 to
10 seconds. Reports are generated everyday. so it scans billions of data (
1years data). Changing to innodb will be doing soon and optimising queries
also. What else can be the solution for time being.

Thanks,
Krishna Chandra Prajapati

On Tue, May 13, 2008 at 1:14 PM, Ben Clewett <ben@stripped> wrote:

> If you use InnoDB you should not have a problem as it used row-level
> locking and isolated transitions.
>
> Other than that you can split your tables into smaller ones using either
> partitioning or the federated engine...
>
> Ben
>
>
>
>
>
> Krishna Chandra Prajapati wrote:
>
> > Hi,
> >
> > Generally, in data modelling there are some independent table, user
> > related
> > tables, master tables and one main table which is related with most of
> > the
> > tables. Almost in all the queries main table is involved to fetch the
> > `id`.
> > In this way main table is used maximum. some times the main table gets
> > locked due to the other query. When the hits on database server
> > increases
> > the locking time will increase.
> >
> > Is there any way to reduce the locking time of main table.
> >  for eg main_dup can be created. To reflect all the changes from main
> > table
> > to main_dup trigger can be used. So main_dup can be used to reduce the
> > locking time of table.
> >
> > The above is my idea. Is there any other way to reduce the locking
> > period.
> >
> >


-- 
Krishna Chandra Prajapati
MySQL DBA,
Ed Ventures e-Learning Pvt.Ltd.
1-8-303/48/15, Sindhi Colony
P.G.Road, Secunderabad.
Pin Code: 500003
Office Number: 040-66489771
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Email-id: prajapatikc@stripped

Thread
Data ModellingKrishna Chandra Prajapati13 May
  • Re: Data ModellingAnanda Kumar13 May
    • Re: Data ModellingKrishna Chandra Prajapati13 May
      • Re: Data ModellingBen Clewett13 May
        • Re: Data ModellingKrishna Chandra Prajapati13 May
  • Re: Data ModellingBen Clewett13 May
    • Re: Data ModellingKrishna Chandra Prajapati13 May