Thanks for taking the time to comment about the interest in our problem.
I had "digest mode" setup for the email preference and i could not reply
to that particular message to the whole group(though i replied to the
"digest email" and i could not see that on the mailing list .
I responded to the person(Leon) who made that helpful suggestion directly
that it dint change the pmap output and i could still see the original
problem.
Now, thanks to your question, here is the full output of trying that
suggestion:
1. Before implementing the suggestion:
* cat /sys/kernel/mm/transparent_hugepage/enabledalways [madvise] never*
2. Implemented the suggestion and verified as below:
*[root@fedora-20-64 ~]# cat
/sys/kernel/mm/transparent_hugepage/enabledalways madvise [never]*
3. Still, i see the following pmap output:
[root@fedora-20-64 ~]#
* pmap -X $(pidof test)1577: ./test*
Address Perm Offset Device Inode Size *Rss* Pss Referenced
Anonymous Swap Locked Mapping
00400000 r-xp 00000000 00:21 88738 4 4 4 4
0 0 0 test
00600000 r--p 00000000 00:21 88738 4 4 4 4
4 0 0 test
00601000 rw-p 00001000 00:21 88738 4 4 4 4
4 0 0 test
7f3fe3f88000 r-xp 00000000 fd:00 1751 1744 796 12 796
0 0 0 libc-2.18.so
7f3fe413c000 ---p 001b4000 fd:00 1751 2044 0 0 0
0 0 0 libc-2.18.so
7f3fe433b000 r--p 001b3000 fd:00 1751 16 16 16 16
16 0 0 libc-2.18.so
7f3fe433f000 rw-p 001b7000 fd:00 1751 8 8 8 8
8 0 0 libc-2.18.so
7f3fe4341000 rw-p 00000000 00:00 0 20 12 12 12
12 0 0
7f3fe4346000 r-xp 00000000 fd:00 1257 128 128 1 128
0 0 0 ld-2.18.so
7f3fe454e000 rw-p 00000000 00:00 0 12 12 12 12
12 0 0
7f3fe4564000 rw-p 00000000 00:00 0 4 4 4 4
4 0 0
7f3fe4565000 r--p 0001f000 fd:00 1257 4 4 4 4
4 0 0 ld-2.18.so
7f3fe4566000 rw-p 00020000 fd:00 1257 4 4 4 4
4 0 0 ld-2.18.so
7f3fe4567000 rw-p 00000000 00:00 0 4 4 4 4
4 0 0
7fffeded0000 rw-p 00000000 00:00 0 136 8 8 8
8 0 0 [stack]
7fffedf42000 r--p 00000000 00:00 0 8 0 0 0
0 0 0 [vvar]
7fffedf44000 r-xp 00000000 00:00 0 8 4 0 4
0 0 0 [vdso]
ffffffffff600000 r-xp 00000000 00:00 0 4 0 0 0
0 0 0 [vsyscall]
==== ==== === ==========
========= ==== ======
4156 *1012* 97 1012
80 0 0 KB
Enabling that option seemed to have increased the RSS output by about 80KB
to 1012(though we do see some noise across different runs to be honest ).
We will be glad to hear any further inputs on this issue.
Regards,
-Anand
On Tue, Jul 20, 2021 at 3:45 PM Jonathan Billings <billi...@negate.org>
wrote:
> On Tue, Jul 20, 2021 at 08:23:33AM -0000, Anand Babu wrote:
> >
> >
> > So, We were trying to move to Fedora 33 from Centos7 for our jvm and
> then we found the memory consumption to be higher than Centos7.
>
> Did the suggestion you got when you posted this on the CentOS list
> help?
>
> https://lists.centos.org/pipermail/centos/2021-July/354153.html
>
> --
> Jonathan Billings <billi...@negate.org>
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