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RE: [PLUG] Re: Why am I running out of memory?
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Title: RE: [PLUG] Re: Why am I running out of memory?
isn't that one of the main differences between Redhat 7,8,9
and Redhat Advanced Server?
I think the Advanced Server doesn't have that memory limit.
I'm not sure, since it's never been an issue for either way,
but I seem to remember the biggest difference between Advanced
Server and regualr Redhat was memory allocation
George
>-----Original Message-----
>From: Walt Mankowski [mailto:waltman@pobox.com]
>Sent: Tuesday, November 25, 2003 1:22 PM
>To: plug@lists.phillylinux.org
>Subject: Re: [PLUG] Re: Why am I running out of memory?
>
>
>On Mon, Nov 24, 2003 at 11:39:56AM -0500, Reilly, Kris wrote:
>> The 2.4 kernels have a 2G memory limitation per pid. I ran
>into this same
>> problem performance tuning a mysql database. Our solution
>was to break the
>> process into multiple processes. Parent/Child isn't good
>enough either, as
>> the parent pid will reach the 2G limit and then hang.
>
>That's what I'm finding empiracally, too. I wrote a little test
>program yesterday that just malloc'ed huge chunks of memory to see how
>big a process could get until malloc() started returning ENOMEM. I
>found I could get to around 2 GB - 32 MB. And, perhaps incidentally,
>the kernel running on this box is right around 32 MB in size.
>
>We've been talking anyway about how to split up the process so that we
>can test more genes at once, and this finding will likely speed up
>that process. As someone else pointed out in this thread, this is
>already a cpu-bound process, so for performance reasons we really need
>to try to avoid paging anyway.
>
>Walt
>
>
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