TCB size in ix86 L4

[Adam 'WeirdArms' Wiggins]

On 8 Jan 1999, Torsten Paul wrote:

> Michael Hohmuth <hohmuth at innocent.com> writes:
> 
> > can't meet real-time requirements; the task_delete operation seems to
> > be especially bad, sometimes disabling interrupts for more than one
> > second.
> > 
> Yes, the measurements showed interrupt a latency of sometimes 1.5
> seconds (even if the interrupt thread had the highest priority) when
> in the L4-Linux System had to serve a lot of calls to fork/exec. This
> was tested with the lat_proc benchmark from the lmbench-suite that
> tries to measure the latency for creating simple processes (that only
> call exit)
> 
> Still there is only one explanation for this: disabled interrupts
> while flushing the complete address space of a task when doing
> task_delete.

	Is L4/Alpha suitable for real time (ie DROPS) or similar to
L4/ix86?

	Cheers Adam
> 
> ciao,
>   Torsten.
> 
> 
> -- 
> Torsten Paul				Es ist leichter, einen Atomkern zu
> paul at os.inf.tu-dresden.de	//		spalten als ein Vorurteil.
> __________________________ooO_(+ +)_Ooo________Albert Einstein_(1879-1955)
> 				U
>