But those same laptops will be running around with 4-16G RAM ( limited by
batteries, desktops or severs will prob be 100G) and 64 bit addressing .
The counter question I raised was is paging needed as you can persist data
by other more flexible and more loosely coupled mechanisms which may be
slower if the device demands it . Also solid state drives don't reduce
battery power when used which it will for paging , for smartphones this may
not be acceptable as the devices size is mainly limited by the battery for
which we are likely to see little improvement in technology.
With some doubt over the usefulness of paging ( well I have) why make paging
a critical feature of an OS and worse tightly couple it to a GC , at the
least you deny all devices today and in the future that have no low latency
secondary storage or which have secondary storage that needs to be quite for
power reasons ?
From: [email protected] [mailto:[email protected]] On
Behalf Of Jonathan S. Shapiro
Sent: Wednesday, February 24, 2010 5:18 PM
To: [email protected]; CapROS development
Subject: Re: [CapROS-devel] Paging and Garbage Collection
On Wed, Feb 24, 2010 at 12:47 AM, Ben Kloosterman <[email protected]>
wrote:
...I'm seeing a lot of newer devices with
no or very little local storage with the OS loaded from some sort of ROM
By the end of the next decade we're going to see commodity priced laptops
with durable, relatively low latency solid-state stores in the terabyte
range.
The question isn't whether disk is going away. The question is how long it's
going to take for commodity main memory to re-aquire ECC. Until then, there
will be a logical store concept for the sake of durable and reliable
recovery, even if that logical store is implemented in solid-state store.
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