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Added section 4.3 "Operating system limits"

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Jonatan Pålsson 2011-05-12 20:50:24 +02:00
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@ -7280,16 +7280,57 @@ name "sec:Operating-system-limitations"
\end_layout \end_layout
\begin_layout Standard \begin_layout Standard
\begin_inset Note Note The operating systems on the computers which were used to run the bots when
testing the GGS prototype had some limitations.
The operating systems used were Linux and Mac OS X, since these systems
are quite similar on a lower level they exhibited the same limitations..
\end_layout
\begin_layout Standard
The most notable limitation was a limit set on the number of simultaneously
open files.
Due to the implementation of sockets in UNIX-like systems such as Mac OS
X and Linux, a limit on the number of open files is a limit on the number
of open sockets.
In order to simulate many connections to the GGS, many sockets needed to
be opened.
Each socket had a bot connected on one end and the GGS on the other end.
On each test machine several thousand sockets needed to be open while testing
the GGS, therefore the limit on open files had to be removed.
\end_layout
\begin_layout Standard
On the Linux machines the limit of open files is configured in
\begin_inset ERT
status open status open
\begin_layout Plain Layout \begin_layout Plain Layout
Describe file and socket limitations
{
\backslash
tt /etc/security/security.conf}
\end_layout \end_layout
\end_inset \end_inset
.
\end_layout
\begin_layout Standard
On the Mac OS X machine the limit of open files is configured in
\begin_inset ERT
status open
\begin_layout Plain Layout
{
\backslash
tt /etc/launchd.conf }
\end_layout
\end_inset
.
\end_layout \end_layout
\begin_layout Chapter \begin_layout Chapter