[PATCH] Remove obscure "low-latency" parts in the introduction of spec

[Andrey Sidorov]

It is related to two way transfer. Imagine high latency (say, 0.1
second) network. With d-bus you can send 100 messages in 0.1 second
and receive reply for all 100 on 0.1 s. With protocols wich don't
support two-way communication (like, for example MySQL protocol) this
can't be done in less than 10 seconds. "Low-latency" thus makes sense
to me in D-Bus description.

On Thu, May 30, 2013 at 6:24 AM, Justin Lee <justinlee5455 at gmail.com> wrote:
> According to Wikipedia
> http://en.wikipedia.org/wiki/Latency_%28engineering%29#Packet-switched_networks
> latency means "the time from the source sending a packet to the destination
> receiving it". Therefore, latency is unrelated to whether the operation is
> asynchronous or synchronous. And also unrelated to whether it's one-way or
> round-trip. Latency exists for asynchronous and one-way transfer, because for
> current DBus implementations we need at least one context switch to transfer
> each message from the sender process to the receiver process. Emphasizing
> D-Bus is low-latency could encourage user to abuse/misuse the system.
>
> Mail disscusion:
> http://lists.freedesktop.org/archives/dbus/2013-May/015665.html
>
> Bug:
> https://bugs.freedesktop.org/show_bug.cgi?id=65141
> ---
>  doc/dbus-specification.xml |   13 ++++---------
>  1 files changed, 4 insertions(+), 9 deletions(-)
>
> diff --git a/doc/dbus-specification.xml b/doc/dbus-specification.xml
> index a6bedfa..507ad50 100644
> --- a/doc/dbus-specification.xml
> +++ b/doc/dbus-specification.xml
> @@ -175,23 +175,18 @@
>    <sect1 id="introduction">
>      <title>Introduction</title>
>      <para>
> -      D-Bus is a system for low-latency, low-overhead, easy to use
> +      D-Bus is a system for low-overhead, easy to use
>        interprocess communication (IPC). In more detail:
>        <itemizedlist>
>          <listitem>
>            <para>
> -            D-Bus is <emphasis>low-latency</emphasis> because it is designed
> -            to avoid round trips and allow asynchronous operation, much like
> -            the X protocol.
> -          </para>
> -        </listitem>
> -        <listitem>
> -          <para>
>              D-Bus is <emphasis>low-overhead</emphasis> because it uses a
>              binary protocol, and does not have to convert to and from a text
>              format such as XML. Because D-Bus is intended for potentially
>              high-resolution same-machine IPC, not primarily for Internet IPC,
> -            this is an interesting optimization.
> +            this is an interesting optimization. D-Bus is also designed to
> +            avoid round trips and allow asynchronous operation, much like
> +            the X protocol.
>            </para>
>          </listitem>
>          <listitem>
> --
> 1.7.5.4
>
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