Problem with database performance, Debian 4gb ram ?

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От Grant Masan
Тема Problem with database performance, Debian 4gb ram ?
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Msg-id c09b5d640911020616t7177a7b9sb4b5f285d99e7c05@mail.gmail.com
обсуждение исходный текст
Ответы Re: Problem with database performance, Debian 4gb ram ?  (Grzegorz Jaśkiewicz <gryzman@gmail.com>)
Re: Problem with database performance, Debian 4gb ram ?  (Ivan Voras <ivoras@freebsd.org>)
Re: Problem with database performance, Debian 4gb ram ?  ("Kevin Grittner" <Kevin.Grittner@wicourts.gov>)
Список pgsql-performance
Дерево обсуждения
Hi Hi all,

I have now readed many many forums and tried many different solutions and I am not getting good performance to database. My server is Debian linux, with 4gb ram, there is also java application and I am giving to that 512mb (JAVA_OPTS) memory. In database there is now like 4milj rows. What should I do better.
Now .conf is:

max_connections = 80
shared_buffers = 512MB
temp_buffers = 8MB
work_mem = 20MB
maintenance_work_mem = 384MB
wal_buffers = 8MB
checkpoint_segments = 128MB
effective_cache_size = 2304MB
cpu_tuple_cost = 0.0030
cpu_index_tuple_cost = 0.0010
cpu_operator_cost = 0.0005
fsync = off
checkpoint_timeout = 1h

and I am giving kernels like:

sysctl -w kernel.shmmax=1073741824
sysctl -w kernel.shmall=2097152

btw, what file I should modify to give this kernels as defaults ?

Thank you very much ! Hope you can clear my problem !

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