🚀 go-pugleaf

In pl.listserv.polip Maciej Drozdowski <maciej_d@sol.put.poznan.pl> wrote:
> czy ktos z Panstwa ma jakies doswiadczenie w uzywaniu 
> 2-procesorowych PCtow z Solarisem?
> (ewentualnie z jakims innym UNIXem)
> Jakies wrazenia z funkcjonalnosci, niezawodnosci, predkosci?

Linux-SMP:

This document describes the implementation of a simple SMP 
Linux kernel extension and how to use this to develop SMP Linux kernels for 
architectures other than the Intel MP v1.1 architecture for Pentium and 486 
processors.

Oraz:

SMP support for Linux with up to 16 processors using the Intel MP
specification. 

WARNING:
        This is experimental. Back up your disks first. Experience is that
it is basically stable in its current (inefficient form).

To fix:

o       Fix sys_idle to exit/enter kernel state and do hlt's.
o       Fix scheduler decisions to reschedule. Per cpu reschedule ?
o       Clean up message pass.
o       Test for B stepping processors.
o       Clean up processor specific/independent split.
o       Document it all.        [PARTLY DONE]
o       Halt other CPU's on reset/panic doesn't always work.
o       Don't waste page at 4K - don't need it now.(watch the GDT code).
o       Dump bootup pages once booted somehow.
o       Clean up warnings/volatiles.
o       Fix load_TR() for non contiguous processor ids
o       Iterate over the slave timer requests if one is lost (keep a count per c
pu)
o       Distribute irq's (locking present just needs the 82489 to be asked
        nicely).
o       486 startup code.
o       How to handle mixed FPU/non FPU processors.


Wnioski z używania (2*Pentium, 64MB RAM):
* działa
* nie wykłada się (nie ma panic'ów)
* szybkość NIE jest taka jak na 2*komputer Pentium
  ale jest szybciej niż na jednym procu...
* polecam.


Zbigniew Zych
--
Optimus SA Oddział Kraków,
dyrektor Działu Technicznego, administrator sieci, http://onet.pl/~zych/