RFR: 8240824: enhance print_full_memory_info on Linux by THP related information

[Thomas Stüfe]

Hi Matthias,

too verbose for my taste:

+  st->print_cr("/sys/kernel/mm/transparent_hugepage/enabled
(transparent huge pages mode):");


I would cut that down to either
"/sys/kernel/mm/transparent_hugepage/enabled" or to "transparent huge pages
mode". Probably the former.

Otherwise looks good. I do not need a new webrev.

Cheers, Thomas



On Tue, Mar 10, 2020 at 4:09 PM Baesken, Matthias <matthias.baesken at sap.com>
wrote:

> Hello, please review this small enhancement .
>
> On Linux, the change adds output of some files related to THP (transparent
> huge pages)   configuration to the hs_err file; the settings in those files
> configure how transparent huge pages are used on the system.
>
> Example output in the hs_err file from a test machine :
>
>
> /sys/kernel/mm/transparent_hugepage/enabled (transparent huge pages mode):
> [always] madvise never
>
> /sys/kernel/mm/transparent_hugepage/defrag (defrag/compaction efforts
> parameter):
> [always] madvise never
>
>
>
>
> Bug/webrev :
>
> https://bugs.openjdk.java.net/browse/JDK-8240824
>
> http://cr.openjdk.java.net/~mbaesken/webrevs/8240824.0/
>
>
> Thanks, Matthias
>
>