Possible working method to get actual process size on Linux

[Stefan Reich]

Breakdown of the process's pages by RSS:

Address range 000000xxxxxxxxxx: 1 MB
Address range 000004xxxxxxxxxx: 2461 MB
Address range 000008xxxxxxxxxx: 2476 MB
Address range 000010xxxxxxxxxx: 2662 MB
Address range 00007cxxxxxxxxxx: 648 MB

This is really getting confusing...

On Thu, 3 Oct 2019 at 14:47, Stefan Reich <
stefan.reich.maker.of.eye at googlemail.com> wrote:

> The situation is still confusing. My process has:
>
> Runtime.totalMemory() = 2.7 GB
> Runtime.usedMemory() =~ 1 GB
>
> ps_mem.py says:
>
> root at smartbot:~/bin# ps_mem.py -p 4837
>  Private  +   Shared  =  RAM used Program
>
> 745.5 MiB +   2.4 GiB =   3.1 GiB java
> ---------------------------------
>                           3.1 GiB
>
> Is the heap counted as shared memory here? The shared memory value seems
> way too large.
>
> My own tool reports < 1 GB as RSS which seems way too low...
>
>
> On Thu, 3 Oct 2019 at 14:32, Per Liden <per.liden at oracle.com> wrote:
>
>>
>> On 10/3/19 2:23 PM, Stefan Reich wrote:
>> > Hi Per!
>> >
>> > Yes, I saw, sorry for not responding the other time.
>> >
>> > This problem is, /proc/*/smaps_rollup doesn't exist on one of my
>> > machines (the one with the oldest kernel). On the newer machines, yeah,
>> > it may be an option to use PSS from smaps_rollup.
>> >
>> > Not sure if there are any tools which would help here.
>>
>> I know some of them (e.g. ps_mem.py), works on older kernels that
>> doesn't have /proc/<pid>/smaps_rollup.
>>
>> cheers,
>> Per
>>
>> >
>> > Greetings,
>> > Stefan
>> >
>> > On Thu, 3 Oct 2019 at 14:16, Per Liden <per.liden at oracle.com
>> > <mailto:per.liden at oracle.com>> wrote:
>> >
>> >
>> >     Did you see my reply to your previous question on this topic? Tools
>> to
>> >     extract this data (PSS) exist. Are they not doing what you want?
>> >
>> >     cheers,
>> >     Per
>> >
>> >
>> >
>> > --
>> > Stefan Reich
>> > BotCompany.de // Java-based operating systems
>>
>
>
> --
> Stefan Reich
> BotCompany.de // Java-based operating systems
>


-- 
Stefan Reich
BotCompany.de // Java-based operating systems