Building on Fedora 6

[Kelly O'Hair]

'make -j' is not recommended. The makefile dependencies cannot be
trusted to be 100% accurate.

-kto

Andrew Haley wrote:
> It's worth mentioning somewhere in the instructions that "make -j"
> doesn't work when building openjdk.  The actual parallelism is
> supposed to be controlled by HOTSPOT_BUILD_JOBS, but it doesn't seem
> to be very effective.  On a dual-processor box with
> HOTSPOT_BUILD_JOBS=4 I get:
> 
> Control build finished: 07-05-09 13:00
> 1729.91user 166.63system 23:53.03elapsed 132%CPU (0avgtext+0avgdata 0maxresident)k
> 0inputs+0outputs (1002major+40812683minor)pagefaults 0swaps
> 
> which is not bad, but it would be nice to increase the parallalism.
> 
> Andrew.
>