On 2015-10-05 11:31, Erik Joelsson wrote:
Looks ok to me, but I suspect someone will be asking for an explicit
way of disabling this soon.
I was just about to reply "just use configure NICE=", but then I had to
go and check that it worked. It didn't. So, here's an updated patch that
allow you to override a configure located executable (such as nice) with
an empty value. The changes are in basics.4m.
http://cr.openjdk.java.net/~ihse/JDK-8138864-make-nice-priority/webrev.02
With this additional fix, you can use "configure NICE=" to disable the
use of nice.
/Magnus
/Erik
On 2015-10-05 11:21, Magnus Ihse Bursie wrote:
Since building the OpenJDK is a heavy operation, the build system
tries to make use as of much of the system resources as possible and
reasonable.
However, on most machines except extremely high-end, this means that
few resources are available for other processes. On a developer
machine, building means that other work can get laggy and have poor
response times.
There is a simple remedy for this! Using "nice" to lower the priority
for the build process, so the build will wait for normal UI
processes. A single "nice" when handling the parallel targets in
Init.gmk is sufficient.
A potential problem could be if this affects performance on dedicated
build servers. I have checked this on Oracle's internal build system,
and there were no measurable regressions. This also stands to reason,
since if there would be, the build server would be running other
processes competing with the build. On a correctly setup build
server, this should not be the case. And if such processes existed,
it would be bad anyway.
Bug: https://bugs.openjdk.java.net/browse/JDK-8138864
WebRev:
http://cr.openjdk.java.net/~ihse/JDK-8138864-make-nice-priority/webrev.01
/Magnus
