Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-24 Thread Gavin Flower
On 23/08/12 11:06, Nick wrote: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the table is 10% of total disk space, etc?

[GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Nick
I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the table is 10% of total disk space, etc? -- Sent via pgsql-general

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Martin French
I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the table is 10% of total disk space, etc? -- My rule here is that a

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Chris Travers
On Wed, Aug 22, 2012 at 4:06 PM, Nick nboutel...@gmail.com wrote: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Jasen Betts
On 2012-08-22, Nick nboutel...@gmail.com wrote: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? when you need to run a query that needs to fetch too many rows. For example, maybe if the

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Bill Moran
In response to Martin French martin.fre...@romaxtech.com: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Merlin Moncure
On Wed, Aug 22, 2012 at 6:06 PM, Nick nboutel...@gmail.com wrote: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Chris Travers
On Thu, Aug 23, 2012 at 6:46 AM, Merlin Moncure mmonc...@gmail.com wrote: On Wed, Aug 22, 2012 at 6:06 PM, Nick nboutel...@gmail.com wrote: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big?

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Tom Lane
Chris Travers chris.trav...@gmail.com writes: On Thu, Aug 23, 2012 at 6:46 AM, Merlin Moncure mmonc...@gmail.com wrote: Partitioning doesn't reduce index size -- it makes total index size *bigger* since you have to duplicate higher nodes in the index -- unless you can exploit the table

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Martin French
I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? For example, maybe if the index size is 6x the amount of ram, if the table is 10% of total disk space, etc?My rule here is

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Jeff Janes
On Wed, Aug 22, 2012 at 4:06 PM, Nick nboutel...@gmail.com wrote: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big? No. Assuming you decided it were too big, what could you do about it? If

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Jeff Janes
On Thu, Aug 23, 2012 at 6:37 AM, Bill Moran wmo...@potentialtech.com wrote: In response to Martin French martin.fre...@romaxtech.com: I have a table with 40 million rows and haven't had any performance issues yet. Are there any rules of thumb as to when a table starts getting too big?

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Bill Moran
On Thu, 23 Aug 2012 17:56:37 -0700 Jeff Janes jeff.ja...@gmail.com wrote: On Thu, Aug 23, 2012 at 6:37 AM, Bill Moran wmo...@potentialtech.com wrote: In response to Martin French martin.fre...@romaxtech.com: I have a table with 40 million rows and haven't had any performance issues

Re: [GENERAL] At what point does a big table start becoming too big?

2012-08-23 Thread Ondrej Ivanič
Hi, On 23 August 2012 23:37, Bill Moran wmo...@potentialtech.com wrote: And the advice I have along those lines is to establish now what constitutes unacceptable performance, and put some sort of monitoring and tracking in place to know what your performance degradation looks like and