RFR+RFA [11u] (S) 8219260: Default number of test jobs needs to be consistently calculated

[Aleksey Shipilev]

I think it is also a good idea to check with Erik, who's the author of the original bulk change.

Erik, does the patch below look good to you?

-Aleksey

On 2/18/19 10:43 PM, Aleksey Shipilev wrote:
> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8219260
> 
> Fix:
>   http://cr.openjdk.java.net/~shade/8219260/webrev.01/
> 
> This is the 11u-specific fix, the partial backport of the large change in 12u. See the full story in
> the bug. This fix is needed to pass tier1 on decently large machine with not much memory. For
> example, this allows my 32-thread Threadripper with 64 GB of memory to pass tier1 test suite with
> elevated heap size due to JDK-8219251. The alternative is to guess and put TEST_JOBS param to the
> test line.
> 
> Testing: Linux x86_64 fastdebug, test/langtools, tier1 on a few machines
> 
> Thanks,
> -Aleksey
>