[GRLUG] NOT LINUX - hybrid drives

[John-Thomas Richards]

On Sat, Nov 10, 2012 at 11:18:46AM -0500, Bob Kline wrote:
> On Sat, Nov 10, 2012 at 11:03 AM, Adam Tauno Williams <
> awilliam at whitemice.org> wrote:
> 
> > Bob Kline <bob.kline at gmail.com> wrote:
> > >
> > http://www.amazon.com/gp/product/ref=pe_172730_26630760_pe_b2/?ASIN=B003NSBF32 mains
> > on spinning rust in the SSD case).
> >
> > >Conceptually, the "sticky bit" in file
> > >permissions was intended for just that
> > >purpose,
> >
> > I think the sticky bit was more about trying to control caching.
> >
> 
> Do tell:
> 
> **
> The sticky bit was introduced in the Fifth
> Edition<http://en.wikipedia.org/wiki/Research_Unix> of
> Unix for use with pure executable files. When set, it instructed the operating
> system <http://en.wikipedia.org/wiki/Operating_system> to retain the text
> segment <http://en.wikipedia.org/wiki/Text_segment> of the program in swap
> space <http://en.wikipedia.org/wiki/Virtual_memory> after the
> process<http://en.wikipedia.org/wiki/Process_(computing)> exited.
> This speeds up subsequent executions by allowing the kernel to make a
> single operation of moving the program from swap to real memory. Thus,
> frequently-used programs like editors would load noticeably faster
> **
> 
> From http://en.wikipedia.org/wiki/Sticky_bit
> 
> The sticky bit might have evolved into something more, but the concept
> dates to the days when memory and hard drive space was very limited.

Methinks Bob & Jon maddog Hall were in kindergarten together.

:)
-- 
john-thomas
------
Always verify your quotations.
(also sometimes quoted as "your references" or "your sources")
Dr. Martin Joseph Routh, President of Magdalen College (1755-1854)