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Xwindows in unix

 
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Old 10-25-2010
Xwindows in unix
the question i have is why Xwindows(GUI) is not part of kernel level but part of user level in unix while in windows the GUI (Windows manager) it is part of kernel level.


For one thing is when GUI hangs it does not crash the whole system as in Windows

But windows avoids context switching.....

can i have some other points....

Thanking in advance
 
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LEARN ABOUT DEBIAN

mprof-heap-viewer

mprof-heap-viewer(1)					      General Commands Manual					      mprof-heap-viewer(1)

NAME

       mprof-heap-viewer - GUI viewer for the logging profiler heap snapshots

SYNOPSIS

       mprof-heap-viewer file

DESCRIPTION

       mprof-heap-viewer GUI viewer for the logging profiler heap snapshots

       WARNING: this application is unfinished and experimental.  Nevertheless it should work, and bug reports are encouraged.

       This program decodes the contents of a logging profiler output file and locates all the heap snapshots inside it.  The user can then select
       each individual snapshot and decide to load it in memory and explore its contents.

       The GUI is organized to work on "object sets" (listed in a tree view on the left).  All operations are performed with a popup menu  on  the
       choosen set.

       Initially  the  sets are the heap snapshots (of course a heap snapshot can be considered a set of objects!).  For each set the GUI shows on
       the right a list that breaks it down by class (one row for each class).

       The user can then refine each set using a "filter", to select a subset.	Examples of filters are "all objects of class X", or "all  objects
       that reference an object of class X".  This way the user explores the sets breaking them down to subsets (each subset in the GUI is a child
       of its owner set on the tree view).

       Moreover the user can issue a "compare" operation between two arbitrary sets A and B, which will compute two subsets: "A - B" (the  objects
       of  A  which  are  not  in  B,  a subsect of A) and "B - A" (the reverse).  This can help in understanding what changed on the heap between
       garbage collections.

Options
       None

ENVIRONMENT VARIABLES

       None

SEE ALSO

       mono(1)

COPYRIGHT

       Copyright (C) 2008 Novell, Inc (http://www.novell.com)

															      mprof-heap-viewer(1)