Bay Networks 3395A, Configuration Manual

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Model 3395A Server Support for the Xremote Protocol
7-12 893-826-A
See Table 7-2 earlier in this chapter for more information about the
recommended values for port characteristics that can also affect the
performance of the communication server during Xremote sessions, including
SESSION LIMIT, TYPEAHEAD SIZE, and INTERNET TCP WINDOW
SIZE.
Memory Requirements for Sessions and Windows
The following figures show the memory requirements to establish an initial
Xremote session and each additional XWindow. These values assume a port
TYPEAHEAD SIZE set to the recommended amount of 1024 bytes and an
INTERNET TCP WINDOW SIZE set to the recommended amount of 512
bytes:
• Initial session requirement: Xremote requires at least 78,300 bytes of
memory per initial session, which includes the initial X connection and the
XDM login window.
• Window requirements: Xremote requires at least 2,700 bytes of memory
per window after you establish the initial session.
The communication server automatically opens one login window with the
initial X connection when you enable Xremote, and each of these uses one
session on the Model 3395A server. After login, the login window disappears,
and the session it used is terminated. The software then calls up a window
manager, which uses one session. Assuming that the port has a session limit of
16, there can be a maximum of 14 working windows, one window manager,
and one initial XWindow connection.
If you established an Xremote session at a port and then opened four additional
windows, the communication server would require approximately 87 KB:
76.5K for the initial X connection and 1 XDM login window (the login window
disappears, but another session is used by the window manager).
10.5 for 4 additional active windows (2700 bytes each).
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87K for a port with 4 working windows and a window manager.