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Hi J.,
I agree with you. My understanding is that this was a long ago
calculation based on something like, "If you need that much RAM, (and
it was so expensive, and most motherboards could not even handle that
much), you needed a pagefile 3 or 4 times as large as your amount of
RAM." My understanding is that now that is simply a legend that will
not die.
Now of course, motherboards can handle GBs of affordable RAM, and
many people need very small pagefiles. I have found two things about
this: 1) any pagefile on the system drive is a drag on performance.
Put it elsewhere, if at all possible. 2) Set the pagefile to a
reasonable size based on observed maximum over time, and set it to a
fixed minimum and maximum, which are the same. This stops Windows
from resizing the darn thing when it doesn't need to, which is also a
drag on performance.
My understanding, anyway.
Yuki
Friday, December 23, 2005, 4:36:38 PM, you wrote:
JB> I have seen some articles claiming that for large amount of
JB> RAM page file should not be increased.
JB> (with very large RAM size you do not need to use any page
JB> file at all). Excessive page file actually
JB> has a negative effect on performance (searching vast size of
JB> empty file takes longer).
JB> There is a tiny freeware utility called XP Page File Monitor
JB> ( XP_PageFileMon.zip circa 2003)
JB> that you should be able to find, it runs as a shut down
JB> script.
JB> Once installed, it monitors your actual usage of page file
JB> and writes it to file on all windows shut downs.
JB> You will be surprised at the results.
JB> I have 2GB RAM and set the page file to 2GB which is about 4
JB> times the maximum I ever saw during
JB> 2 months of monitoring.
JB> Joseph Biran
JB> ____________________________________________
JB> _____
JB> From: amibroker@xxxxxxxxxxxxxxx
JB> [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of
JB> dan_public@xxxxxxxxxxx
JB> Sent: Tuesday, December 20, 2005 6:53 PM
JB> To: amibroker@xxxxxxxxxxxxxxx
JB> Subject: RE: [amibroker] OUT of MEMORY code
JB> Yep, not your installed memory. I have 1.5Gb and AB runs
JB> fine.
JB> Just a thought... Try turning Off the code switch and then
JB> turning off HyperThreading (I think that's an option), then
JB> turn off both.
JB> Also, have you checked your page file size? At 2Gb of
JB> memory, it should be set to about 3Gb.
JB> I can't think of anything else.
JB> Good luck,
JB> Dan.
JB> -------------- Original message --------------
JB> From: "Mark Keitel" <mkeitel@xxxxxxxxxxxxxxx>
JB> 2gb of memory, think it is like 533 speed, Hyper thread
JB> machine, plus I changed the Microsoft code switch to allow
JB> 3gb of memory and page memory is maxed out too
JB> That is not the issue, has to do with settings inside AB I
JB> would think
JB> Mark
JB> <file:///C:\Documents%20and%20Settings\Owner\Application%20D
JB> ata\Microsoft\Signatures\www.aajonahfish.com\astronomyhaven.
JB> htm>
JB> _____
JB> From: amibroker@xxxxxxxxxxxxxxx
JB> [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of
JB> dan_public@xxxxxxxxxxx
JB> Sent: Tuesday, December 20, 2005 7:52 PM
JB> To: amibroker@xxxxxxxxxxxxxxx
JB> Subject: Re: [amibroker] OUT of MEMORY code
JB> Mark,
JB> AB and eSignal are memory "intensive". With EOD data
JB> (i.e., no live datafeed), I've had AB use more than 1/2 Gb
JB> of memory after an exploration.
JB> How much memory does your system have? If less than 1Gb,
JB> consider upgrading.
JB> Regards,
JB> Dan.
JB> -------------- Original message --------------
JB> From: "aajohnah" <aajohnah@xxxxxxxxxxxxxxx>
JB> I am trying to run an explore on my whole data base now and
JB> am getting an out of memory though it says
JB> E-signal out of memory and AB is locked up
JB> Any suggestion?
JB> Thank you
JB> Mark
JB> <file:///C:\Documents%20and%20Settings\Owner\Application%20D
JB> ata\Microsoft\Signatures\www.aajonahfish.com\astronomyhaven.
JB> htm>
JB> Please note that this group is for discussion between users
JB> only.
JB> To get support from AmiBroker please send an e-mail directly
JB> to
JB> SUPPORT {at} amibroker.com
JB> For other support material please check also:
JB> http://www.amibroker.com/support.html
JB> _____
JB> YAHOO! GROUPS LINKS
JB> * Visit your group "amibroker
JB> <http://groups.yahoo.com/group/amibroker> " on the web.
JB> * To unsubscribe from this group, send an email to:
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JB> <mailto:amibroker-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubs
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JB> _____
Best,
Yuki
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