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->Chapter 3. Using LTTV graphical interface</TD
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->3.2. Control Flow View Colors</A
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-SRC="lttv-color-list.png"
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->Control Flow View Color Legend</P
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-><P
-> Here is a description of the colors used in the control flow view. Each color
-represents a state of the process at a given time.
-</P
-><P
-></P
-><UL
-><LI
-><P
-> White : this color is used for process from which state is not known. It may
-happen when you seek quickly at a far time in the trace just after it has been
-launched. At that moment, the precomputed state information is incomplete. The
-"unknown" state is used to identify this. Note that the viewer gets refreshed
-once the precomputation ends.
-</P
-></LI
-><LI
-><P
-> Green : This color is only used for process when they are running in user mode.
-That includes execution of all the source code of an executable as well as the
-libraries it uses.
-</P
-></LI
-><LI
-><P
-> Pale blue : A process is doing a system call to the kernel, and the mode is
-switched from process limited rights to super user mode. Only code from the
-kernel (including modules) should be run in that state.
-</P
-></LI
-><LI
-><P
-> Yellow : The kernel is running a trap that services a fault. The most frequent
-trap is the memory page fault trap : it is called every time a page is missing
-from physical memory.
-</P
-></LI
-><LI
-><P
-> Orange : IRQ servicing routine is running. It interrupts the currently running
-process. As the IRQ does not change the currently running process (on some
-architectures it uses the same stack as the process), the IRQ state is shown in
-the state of the process. IRQ can be nested : a higher priority interrupt can
-interrupt a lower priority interrupt.
-</P
-></LI
-><LI
-><P
-> Pink : SoftIRQ handler is running. A SoftIRQ is normally triggered by an
-interrupt that whishes to have some work done very soon, but not "now". This is
-especially useful, for example, to have the longest part of the network stack
-traversal done : a too long computation in the interrupt handler would increase
-the latency of the system. Therefore, doing the long part of the computation in
-a softirq that will be run just after the IRQ handler exits will permits to do
-this work while interrupts are enabled, without increasing the system latency.
-</P
-></LI
-><LI
-><P
-> Dark red : A process in that state is waiting for an input/output operation to
-complete before it can continue its execution.
-</P
-></LI
-><LI
-><P
-> Dark yellow : A process is ready to run, but waiting to get the CPU (a schedule
-in event).
-</P
-></LI
-><LI
-><P
-> Dark purple : A process in zombie state. This state happens when a process
-exits and then waits for the parent to wait for it (wait() or waitpid()).
-</P
-></LI
-><LI
-><P
-> Dark green : A process has just been created by its parent and is waiting for
-first scheduling.
-</P
-></LI
-><LI
-><P
-> Magenta : The process has exited, but still has the control of the CPU. It may
-happend if it has some tasks to do in the exit system call.
-</P
-></LI
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