Re: Howto Increased performace ?

От: Iain
Тема: Re: Howto Increased performace ?
Дата: ,
Msg-id: 006301c4ec85$68d372f0$7201a8c0@mst1x5r347kymb
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Ответ на: Howto Increased performace ?  ("Amrit Angsusingh")
Список: pgsql-performance

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Howto Increased performace ?  ("Amrit Angsusingh", )
 Re: Howto Increased performace ?  (Ragnar Hafstað, )
 Re: Howto Increased performace ?  ("Iain", )
 Re: Howto Increased performace ?  ("Iain", )
  Re: Howto Increased performace ?  (Cosimo Streppone, )
 Re: Howto Increased performace ?  (Ragnar Hafstað, )
 Re: Howto Increased performace ?  ("Iain", )
 Re: Howto Increased performace ?  ("Iain", )
 Re: Howto Increased performace ?  ("Iain", )

Hi Amrit,

I'm sorry to hear about the disaster in Thailand. I live in a tsunami prone
area myself :-(

I think that you have enough information to solve your problem now, but it
will just take some time and testing. When you have eliminated the excessive
swapping and tuned your system as best you can, then you can decide if that
is fast enough for you. More memory might help, but I can't say for sure.
There are many other things to consider. I suggest that you spend some time
reading through the performance and maybe the admin lists.

regards
Iain

----- Original Message -----
From: "Amrit Angsusingh" <>
To: "Iain" <>
Cc: <>
Sent: Tuesday, December 28, 2004 1:48 AM
Subject: Re: [PERFORM] Howto Increased performace ?


>> Hi,
>>
>> These are some settings that I am planning to start with for a 4GB RAM
>> dual
>> opteron system with a maximum of 100 connections:
>>
>>
>> shared_buffers 8192 (=67MB RAM)
>> sort_mem 4096 (=400MB RAM for 100 connections)
>> effective_cache_size 380000(@8KB  =3.04GB RAM)
>> vacuum_mem 32768 KB
>> wal_buffers 64
>> checkpoint_segments 8
>>
>> In theory, effective cache size is the amount of memory left over for the
>> OS
>> to cache the filesystem after running all programs and having 100 users
>> connected, plus a little slack.
>>
>> regards
>> Iain
>
>
> I'm not sure if I put more RAM on my mechine ie: 6 GB . The performance
> would increase for more than 20 % ?
> Any comment please,
>
> Amrit Angsusingh
> Comcenter
> Sawanpracharuck Hospital
> Thailand
>
>



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