From: | William Yu <wyu(at)talisys(dot)com> |
---|---|
To: | pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Increasing RAM for more than 4 Gb. using postgresql |
Date: | 2005-01-18 03:03:18 |
Message-ID: | cshu9e$2ha9$1@news.hub.org |
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Lists: | pgsql-performance |
My experience is RH9 auto detected machines >= 2GB of RAM and installs
the PAE bigmem kernel by default. I'm pretty sure the FC2/3 installer
will do the same.
amrit(at)health2(dot)moph(dot)go(dot)th wrote:
>>I understand that the 2.6.* kernels are much better at large memory
>>support (with respect to performance issues), so unless you have a
>>64-bit machine lying around - this is probably worth a try.
>>
>>You may need to build a new kernel with the various parameters :
>>
>>CONFIG_NOHIGHMEM
>>CONFIG_HIGHMEM4G
>>CONFIG_HIGHMEM64G
>>
>>set appropriately (or even upgrade to the latest 2.6.10). I would expect
>>that some research and experimentation will be required to get the best
>>out of it - (e.g. the 'bounce buffers' issue).
>
>
> In the standard rpm FC 2-3 with a newly install server , would it automatically
> detect and config it if I use the mechine with > 4 Gb [6Gb.] or should I
> manually config it?
> Amrit
> Thailand
>
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