Re: Server misconfiguration???
От | Andy |
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Тема | Re: Server misconfiguration??? |
Дата | |
Msg-id | 00dc01c5cd7e$f6f127a0$0b00a8c0@forge обсуждение исходный текст |
Ответ на | Server misconfiguration??? ("Andy" <frum@ar-sd.net>) |
Ответы |
Re: Server misconfiguration???
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Список | pgsql-performance |
Yes you're right it really bosst a little. I want to improve the system performance. Are there any more tipps? On this server runs only a webserver with php application which uses postgre Db. Should I give more memory to postgre? From what I noticed this is the most memory "needing" service from this system. Andy. ----- Original Message ----- From: "Christopher Kings-Lynne" <chriskl@familyhealth.com.au> To: "Andy" <frum@ar-sd.net> Cc: <pgsql-performance@postgresql.org> Sent: Monday, October 10, 2005 11:55 AM Subject: Re: [PERFORM] Server misconfiguration??? >A lot of them are too large. Try: > > Andy wrote: >> Hi to all, >> I have the following configuration: >> Dual Xeon 2.8 Ghz, 1G RAM and postgre 8.0.3 installed. >> Modified configuration parameters: >> max_connections = 100 >> shared_buffers = 64000 # 500MB = 500 x 1024 x 1024 / (8 x 1024) (8KB) > > shared_buffers = 10000 > >> work_mem = 51200 # 50MB = 50 x 1024 KB > > work_mem = 4096 > >> maintenance_work_mem = 102400 # 50MB = 100 x 1024 KB >> checkpoint_segments = 10 >> effective_cache_size = 25600 # 200MB = 50 x 1024 / 8 >> client_min_messages = notice log_min_messages = notice >> log_min_duration_statement = 2000 >> I get the feeling the server is somehow missconfigured or it does not >> work at full parameter. If I look at memory allocation, it never goes >> over 250MB whatever I do with the database. The kernel shmmax is set to >> 600MB. Database Size is around 550MB. > > That's because you have work_mem set massively high. Remember that's PER > SORT. If you have 10 queries running each doing 3 sorts that's 30x the > work_mem right there. > > Chris > > >
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