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Re: effective_cache_size and work_ram

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Hi,  yes it is a dedicated server.  and THANKS!




On 12 Dec 2012, at 3:55 PM, Pavel Stehule wrote:

> hello
> 
> 2012/12/12 ac@xxxxxx <ac@xxxxxx>:
>> Hi,
>> 
>> I have a new server for PostgreSQL 9.2.2 with 8GB physical RAM,  I want to
>> turn the server with the following changes from default:
>> 
>> max_connections = 100           # default
>> shared_buffers = 2048MB # change from 24MB to 2048MB as I think 24MB is not
>> enough
>> maintenance_work_mem = 400MB    # 50MB/GB x 8GB
>> effective_cache_size = 4096MB   # Set to 50% of total RAM
>> work_mem = 24MB
>> checkpoint_segments = 10
>> wal_buffers = 16MB
>> 
>> Are these values reasonable?
> 
> it is dedicated server?
> 
> then  effective_cache_size can be higher maybe 6GB
> 
> checkpoint_segments are too low, can be 128
> 
> Regards
> 
> Pavel Stehule
> 
> 
>> 
>> Thanks
>> ac



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