RFR(XS): 8066998: [TESTBUG] compiler/whitebox/ForceNMethodSweepTest.java : sweep shouldn't increase usage

[Pavel Chistyakov]

Vladimir, thank you for review!

-----------
Regards,
Pavel

----- Original Message -----
From: vladimir.kozlov at oracle.com
To: hotspot-compiler-dev at openjdk.java.net
Sent: Tuesday, January 20, 2015 8:52:44 PM GMT +04:00 Abu Dhabi / Muscat
Subject: Re: RFR(XS): 8066998: [TESTBUG] compiler/whitebox/ForceNMethodSweepTest.java : sweep shouldn't increase usage

Looks good.

Thanks,
Vladimir

On 1/20/15 9:37 AM, Pavel Chistyakov wrote:
> Hi all,
>
> please review small fix for JDK-8066998 <https://bugs.openjdk.java.net/browse/JDK-8066998>.
>
> webrev: http://cr.openjdk.java.net/~pchistyakov/8066998/webrev.00/
>
> Problem: sometimes ForceNMethodSweepTest fails w/ "sweep shouldn't increase usage" message that is caused by increasing
> of total counted code cache usage after sweeping instead of decreasing. After some investigations (thanks Albert Noll)
> we found that this behavior can be forced by background compilation. It happens after controlled sweep process and
> increases code cache usage unexpectedly.
>
> Solution: disable background compilation for this test.
>
> Testing: manual locally (about 1000 runs w/ and w/o background compilation)
>
> ----------------
> Thanks,
> Pavel