On 02/07/2013 10:42 AM, Lars Noodén wrote:
On 02/07/2013 07:04 PM, Aere Greenway wrote:
[snip]
512 Megabytes of RAM used to be the 'gold-standard' for all of the
Ubuntu variants, but that, alas, is no longer the case. And I realize
there is little Lubuntu can do to shield us from the ever-increasing
memory requirements of the Linux kernel.
I've been noticing that my low-end daily use is around 1.1 - 1.5 GB RAM
on AMD64. That is unfortunate because my machine only has 1GB and I
have to rely on swap for the rest. That just with a mail client, a web
browser, and a chat client. A second browser and an SIP client add further.
Regards,
/Lars
All:
I keep forgetting about 64-bit systems, because I usually don't use
them. My e-mail reflected that unconscious assumption.
I don't know how the internal architecture actually works now, so what I
say here is based on my experience when we migrated from 16-bit
addressing to 32-bit addressing.
I won't get into the nitty-gritty details too much, but back then, it
seemed appalling how much larger the 32-bit addressing programs were
than the 16-bit. Yet it was better because we could directly address a
larger memory space without having to separate areas of memory into
segments that could be accessed with a 16-bit address-range.
The reason the programs were so much larger, is that in the actual
machine-language program resulting from compiling a computer language,
everywhere it referenced memory, it now took 32-bits, rather than the
16-bits we were used-to. So the same programs we were used to (using in
the earlier architecture) were now a lot larger than they used to be.
I suspect we have the same problem with 64-bit addressing, as compared
to 32-bit addressing. All memory-references are now twice the size than
they used to be, so the compiled programs are a lot larger because of
that necessity.
But with 64-bit architecture, you can address a exponentially more
memory than with 32-bit architecture. The ironic part of that, is that
you need more memory because the programs must be much bigger than they
used to be.
--
Sincerely,
Aere
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