Re: [rtl] RT needed for 2.5msec?

[Aleksandar Bakic <bakicale@brazil.tcimet.net>]

Michael Hassler <mhassler@ti.com> writes:

[...]
> My question is whether I need RTLinux or whether I can get by with
> standard Linux to guarantee 2.5 msec buffer servicing?  Many people have
> told me that I don't have a hope of doing this with standard Linux, but
> yet I have read in some places that millisecond level scheduling
> precision is possible.  Is there a definative answer?
[...]

Instead of answering your question, I hope to get the attention of
those who might know the answer, because I have a similar problem. I
need the Linux kernel to respond to NIC interrupts in the presence of
RT tasks frequently enough to keep network connections alive. I
modified the rate-monotonic scheduler so that the Linux kernel gets
scheduled periodically, in addition to using time unused by RT
tasks. However, I could not achieve the goal yet.

Aleks
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